./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_rmo.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/thin002_rmo.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_rmo.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:13:13,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:13:13,335 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:13:13,340 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:13:13,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:13:13,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:13:13,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:13:13,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:13:13,373 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:13:13,376 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:13:13,376 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:13:13,377 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:13:13,377 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:13:13,378 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:13:13,379 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:13:13,379 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:13:13,380 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:13:13,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:13:13,380 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:13:13,380 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:13:13,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:13:13,381 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:13:13,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:13:13,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:13:13,381 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:13:13,382 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:13:13,382 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:13:13,382 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:13:13,383 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:13:13,383 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:13:13,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:13:13,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:13:13,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:13:13,384 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:13:13,384 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:13:13,384 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:13:13,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:13:13,386 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:13:13,386 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 02:13:13,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:13:13,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:13:13,638 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:13:13,639 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:13:13,639 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:13:13,640 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-28 02:13:14,723 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:13:14,954 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:13:14,954 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-28 02:13:14,972 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa8e3dd1/7abd5c424de84424868d5ebbe177c3d7/FLAG1d58c0d1c [2024-06-28 02:13:14,985 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7fa8e3dd1/7abd5c424de84424868d5ebbe177c3d7 [2024-06-28 02:13:14,987 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:13:14,988 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:13:14,988 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/thin002_rmo.yml/witness.yml [2024-06-28 02:13:15,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:13:15,184 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:13:15,185 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:13:15,185 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:13:15,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:13:15,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:13:14" (1/2) ... [2024-06-28 02:13:15,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e351dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:13:15, skipping insertion in model container [2024-06-28 02:13:15,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:13:14" (1/2) ... [2024-06-28 02:13:15,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2de78d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:13:15, skipping insertion in model container [2024-06-28 02:13:15,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:13:15" (2/2) ... [2024-06-28 02:13:15,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e351dbc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:13:15, skipping insertion in model container [2024-06-28 02:13:15,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:13:15" (2/2) ... [2024-06-28 02:13:15,193 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:13:15,359 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:13:15,361 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 02:13:15,361 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 02:13:15,361 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 02:13:15,361 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || a$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((((((((((((((((((((((((((((((0 <= __unbuffered_cnt && __unbuffered_p0_EAX$flush_delayed == (_Bool)0) && __unbuffered_p0_EAX$mem_tmp == 0) && __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0) && __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0) && __unbuffered_p0_EAX$w_buff0 == 0) && __unbuffered_p0_EAX$w_buff0_used == (_Bool)0) && __unbuffered_p0_EAX$w_buff1 == 0) && __unbuffered_p0_EAX$w_buff1_used == (_Bool)0) && a$flush_delayed == (_Bool)0) && a$r_buff0_thd0 == (_Bool)0) && a$r_buff0_thd1 == (_Bool)0) && a$r_buff0_thd2 == (_Bool)0) && a$r_buff0_thd3 == (_Bool)0) && a$r_buff0_thd4 == (_Bool)0) && a$r_buff1_thd0 == (_Bool)0) && a$r_buff1_thd1 == (_Bool)0) && a$r_buff1_thd2 == (_Bool)0) && a$r_buff1_thd3 == (_Bool)0) && a$r_buff1_thd4 == (_Bool)0) && a$read_delayed == (_Bool)0) && a$read_delayed_var == 0) && a$w_buff0 == 0) && a$w_buff0_used == (_Bool)0) && a$w_buff1 == 0) && a$w_buff1_used == (_Bool)0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1)))) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)) && (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) && (a == 0 || a == 1)) && (a$mem_tmp == 0 || a$mem_tmp == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (z == 0 || z == 1)))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || a$w_buff0_used == (_Bool)0) [2024-06-28 02:13:15,362 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:13:15,362 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-28 02:13:15,396 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:13:15,554 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i[988,1001] [2024-06-28 02:13:15,705 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:13:15,725 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 02:13:15,777 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i[988,1001] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:13:15,921 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:13:15,970 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:13:15,971 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:13:15 WrapperNode [2024-06-28 02:13:15,971 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:13:15,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:13:15,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:13:15,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:13:15,977 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,008 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,044 INFO L138 Inliner]: procedures = 176, calls = 96, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 246 [2024-06-28 02:13:16,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:13:16,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:13:16,047 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:13:16,047 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:13:16,058 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,059 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,071 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,103 INFO L175 MemorySlicer]: Split 47 memory accesses to 2 slices as follows [2, 45]. 96 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 5 writes are split as follows [0, 5]. [2024-06-28 02:13:16,104 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,104 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,116 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,165 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,167 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,169 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:13:16,173 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:13:16,173 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:13:16,173 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:13:16,174 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 02:13:15" (1/1) ... [2024-06-28 02:13:16,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:13:16,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:13:16,242 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 02:13:16,272 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 02:13:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 02:13:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 02:13:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 02:13:16,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 02:13:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:13:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:13:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:13:16,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:13:16,296 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:13:16,296 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:13:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 02:13:16,297 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 02:13:16,297 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 02:13:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 02:13:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:13:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 02:13:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:13:16,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:13:16,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:13:16,301 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 02:13:16,446 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:13:16,447 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:13:16,892 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:13:16,892 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:13:17,233 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:13:17,233 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:13:17,234 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:13:17 BoogieIcfgContainer [2024-06-28 02:13:17,234 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:13:17,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:13:17,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:13:17,239 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:13:17,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:13:14" (1/4) ... [2024-06-28 02:13:17,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2211500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:13:17, skipping insertion in model container [2024-06-28 02:13:17,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:13:15" (2/4) ... [2024-06-28 02:13:17,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2211500 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:13:17, skipping insertion in model container [2024-06-28 02:13:17,240 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 02:13:15" (3/4) ... [2024-06-28 02:13:17,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2211500 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:13:17, skipping insertion in model container [2024-06-28 02:13:17,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:13:17" (4/4) ... [2024-06-28 02:13:17,242 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_rmo.i [2024-06-28 02:13:17,256 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:13:17,256 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-28 02:13:17,256 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:13:17,350 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:13:17,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 02:13:17,419 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-28 02:13:17,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:13:17,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-28 02:13:17,425 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-28 02:13:17,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 52 transitions, 116 flow [2024-06-28 02:13:17,439 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:13:17,447 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;@58b45166, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:13:17,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-28 02:13:17,453 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:13:17,454 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:13:17,454 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:13:17,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:17,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:13:17,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:17,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash 700399659, now seen corresponding path program 1 times [2024-06-28 02:13:17,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:17,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006608056] [2024-06-28 02:13:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:17,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:19,661 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 02:13:19,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:19,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006608056] [2024-06-28 02:13:19,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006608056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:19,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:19,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:13:19,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754594536] [2024-06-28 02:13:19,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:19,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:13:19,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:13:19,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:13:19,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-28 02:13:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-28 02:13:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:21,866 INFO L124 PetriNetUnfolderBase]: 11846/17104 cut-off events. [2024-06-28 02:13:21,866 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-06-28 02:13:21,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33290 conditions, 17104 events. 11846/17104 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 764. Compared 107434 event pairs, 8420 based on Foata normal form. 0/16572 useless extension candidates. Maximal degree in co-relation 33277. Up to 15950 conditions per place. [2024-06-28 02:13:21,961 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 55 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-06-28 02:13:21,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 291 flow [2024-06-28 02:13:21,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:13:21,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:13:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-28 02:13:21,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-06-28 02:13:21,972 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 116 flow. Second operand 3 states and 119 transitions. [2024-06-28 02:13:21,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 291 flow [2024-06-28 02:13:21,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:21,977 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-28 02:13:21,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-28 02:13:21,980 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-28 02:13:21,981 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-28 02:13:21,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:21,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:21,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:21,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:13:21,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:21,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:21,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1225731254, now seen corresponding path program 1 times [2024-06-28 02:13:21,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:21,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304712127] [2024-06-28 02:13:21,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:21,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:24,428 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 02:13:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:24,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304712127] [2024-06-28 02:13:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304712127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:24,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:13:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21692280] [2024-06-28 02:13:24,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:13:24,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:13:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:13:24,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-28 02:13:24,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-28 02:13:24,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:26,754 INFO L124 PetriNetUnfolderBase]: 11836/16455 cut-off events. [2024-06-28 02:13:26,755 INFO L125 PetriNetUnfolderBase]: For 2997/3008 co-relation queries the response was YES. [2024-06-28 02:13:26,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37126 conditions, 16455 events. 11836/16455 cut-off events. For 2997/3008 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 96482 event pairs, 6741 based on Foata normal form. 10/16459 useless extension candidates. Maximal degree in co-relation 37114. Up to 15895 conditions per place. [2024-06-28 02:13:26,837 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 76 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-28 02:13:26,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 454 flow [2024-06-28 02:13:26,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:13:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:13:26,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-28 02:13:26,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822033898305084 [2024-06-28 02:13:26,843 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 4 states and 161 transitions. [2024-06-28 02:13:26,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 454 flow [2024-06-28 02:13:26,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:13:26,849 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 241 flow [2024-06-28 02:13:26,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-06-28 02:13:26,861 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-06-28 02:13:26,861 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 241 flow [2024-06-28 02:13:26,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:26,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:26,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:26,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:13:26,862 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:26,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:26,862 INFO L85 PathProgramCache]: Analyzing trace with hash 657038786, now seen corresponding path program 1 times [2024-06-28 02:13:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:26,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014528504] [2024-06-28 02:13:26,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:26,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:29,519 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 02:13:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:29,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014528504] [2024-06-28 02:13:29,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014528504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:29,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:29,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:13:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902925302] [2024-06-28 02:13:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:29,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:13:29,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:13:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:13:29,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-28 02:13:29,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:29,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:29,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-28 02:13:29,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:32,236 INFO L124 PetriNetUnfolderBase]: 15023/20762 cut-off events. [2024-06-28 02:13:32,236 INFO L125 PetriNetUnfolderBase]: For 11735/11753 co-relation queries the response was YES. [2024-06-28 02:13:32,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52473 conditions, 20762 events. 15023/20762 cut-off events. For 11735/11753 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 122238 event pairs, 7095 based on Foata normal form. 16/20773 useless extension candidates. Maximal degree in co-relation 52458. Up to 20058 conditions per place. [2024-06-28 02:13:32,357 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 109 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-06-28 02:13:32,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 712 flow [2024-06-28 02:13:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:13:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:13:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-06-28 02:13:32,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2024-06-28 02:13:32,359 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 241 flow. Second operand 5 states and 198 transitions. [2024-06-28 02:13:32,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 712 flow [2024-06-28 02:13:32,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 712 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 02:13:32,374 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 409 flow [2024-06-28 02:13:32,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=75, PETRI_TRANSITIONS=80} [2024-06-28 02:13:32,375 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2024-06-28 02:13:32,375 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 409 flow [2024-06-28 02:13:32,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:32,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:32,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:32,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:13:32,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:32,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:32,376 INFO L85 PathProgramCache]: Analyzing trace with hash 54145729, now seen corresponding path program 1 times [2024-06-28 02:13:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:32,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532051401] [2024-06-28 02:13:32,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:32,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:13:35,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:35,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532051401] [2024-06-28 02:13:35,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532051401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:35,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:35,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:13:35,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590678925] [2024-06-28 02:13:35,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:35,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:13:35,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:35,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:13:35,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:13:35,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-28 02:13:35,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 80 transitions, 409 flow. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:35,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:35,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-28 02:13:35,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:38,323 INFO L124 PetriNetUnfolderBase]: 15007/20754 cut-off events. [2024-06-28 02:13:38,324 INFO L125 PetriNetUnfolderBase]: For 19147/19210 co-relation queries the response was YES. [2024-06-28 02:13:38,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57427 conditions, 20754 events. 15007/20754 cut-off events. For 19147/19210 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 123033 event pairs, 5647 based on Foata normal form. 38/20787 useless extension candidates. Maximal degree in co-relation 57407. Up to 19956 conditions per place. [2024-06-28 02:13:38,442 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 124 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2024-06-28 02:13:38,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 155 transitions, 883 flow [2024-06-28 02:13:38,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:13:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:13:38,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-06-28 02:13:38,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581920903954802 [2024-06-28 02:13:38,444 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 409 flow. Second operand 6 states and 233 transitions. [2024-06-28 02:13:38,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 155 transitions, 883 flow [2024-06-28 02:13:38,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 879 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 02:13:38,459 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 471 flow [2024-06-28 02:13:38,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=471, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2024-06-28 02:13:38,460 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2024-06-28 02:13:38,460 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 471 flow [2024-06-28 02:13:38,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:38,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:38,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:38,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:13:38,462 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:38,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:38,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2109851229, now seen corresponding path program 1 times [2024-06-28 02:13:38,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:38,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701394775] [2024-06-28 02:13:38,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:38,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:40,645 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 02:13:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:40,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701394775] [2024-06-28 02:13:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701394775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:40,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:40,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:13:40,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472541876] [2024-06-28 02:13:40,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:13:40,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:40,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:13:40,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:13:40,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:13:40,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 471 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 02:13:40,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:40,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:13:40,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:44,515 INFO L124 PetriNetUnfolderBase]: 18976/26974 cut-off events. [2024-06-28 02:13:44,515 INFO L125 PetriNetUnfolderBase]: For 34511/34553 co-relation queries the response was YES. [2024-06-28 02:13:44,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76495 conditions, 26974 events. 18976/26974 cut-off events. For 34511/34553 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 169327 event pairs, 9349 based on Foata normal form. 18/26985 useless extension candidates. Maximal degree in co-relation 76471. Up to 25262 conditions per place. [2024-06-28 02:13:44,708 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 101 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2024-06-28 02:13:44,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 860 flow [2024-06-28 02:13:44,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:13:44,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:13:44,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-28 02:13:44,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-06-28 02:13:44,710 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 471 flow. Second operand 5 states and 160 transitions. [2024-06-28 02:13:44,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 860 flow [2024-06-28 02:13:44,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 810 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:44,729 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 575 flow [2024-06-28 02:13:44,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=575, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-06-28 02:13:44,730 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-06-28 02:13:44,730 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 575 flow [2024-06-28 02:13:44,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 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 02:13:44,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:44,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:44,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:13:44,731 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:44,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:44,731 INFO L85 PathProgramCache]: Analyzing trace with hash -519907704, now seen corresponding path program 1 times [2024-06-28 02:13:44,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:44,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479370539] [2024-06-28 02:13:44,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:44,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:44,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:47,795 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 02:13:47,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:47,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479370539] [2024-06-28 02:13:47,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479370539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:47,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886470424] [2024-06-28 02:13:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:47,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:47,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:47,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:47,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:47,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 02:13:47,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 575 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:47,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:47,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 02:13:47,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:51,796 INFO L124 PetriNetUnfolderBase]: 18655/25726 cut-off events. [2024-06-28 02:13:51,797 INFO L125 PetriNetUnfolderBase]: For 52277/52506 co-relation queries the response was YES. [2024-06-28 02:13:51,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83256 conditions, 25726 events. 18655/25726 cut-off events. For 52277/52506 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 154443 event pairs, 7286 based on Foata normal form. 73/25749 useless extension candidates. Maximal degree in co-relation 83229. Up to 24590 conditions per place. [2024-06-28 02:13:52,036 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 123 selfloop transitions, 40 changer transitions 0/176 dead transitions. [2024-06-28 02:13:52,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 176 transitions, 1177 flow [2024-06-28 02:13:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:52,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:52,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-06-28 02:13:52,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029055690072639 [2024-06-28 02:13:52,038 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 575 flow. Second operand 7 states and 249 transitions. [2024-06-28 02:13:52,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 176 transitions, 1177 flow [2024-06-28 02:13:52,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 176 transitions, 1161 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-28 02:13:52,079 INFO L231 Difference]: Finished difference. Result has 88 places, 102 transitions, 722 flow [2024-06-28 02:13:52,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=722, PETRI_PLACES=88, PETRI_TRANSITIONS=102} [2024-06-28 02:13:52,080 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2024-06-28 02:13:52,080 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 102 transitions, 722 flow [2024-06-28 02:13:52,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:52,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:52,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:52,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:13:52,081 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:52,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash -519787548, now seen corresponding path program 1 times [2024-06-28 02:13:52,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:52,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715232109] [2024-06-28 02:13:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:52,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:13:55,195 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 02:13:55,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:13:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715232109] [2024-06-28 02:13:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715232109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:13:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:13:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:13:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534822580] [2024-06-28 02:13:55,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:13:55,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:13:55,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:13:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:13:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:13:55,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:13:55,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 102 transitions, 722 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:55,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:13:55,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:13:55,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:13:59,189 INFO L124 PetriNetUnfolderBase]: 19172/26333 cut-off events. [2024-06-28 02:13:59,190 INFO L125 PetriNetUnfolderBase]: For 64785/64851 co-relation queries the response was YES. [2024-06-28 02:13:59,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88242 conditions, 26333 events. 19172/26333 cut-off events. For 64785/64851 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 155837 event pairs, 7764 based on Foata normal form. 35/26358 useless extension candidates. Maximal degree in co-relation 88212. Up to 25326 conditions per place. [2024-06-28 02:13:59,408 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 154 selfloop transitions, 36 changer transitions 0/200 dead transitions. [2024-06-28 02:13:59,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 200 transitions, 1545 flow [2024-06-28 02:13:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:13:59,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:13:59,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-06-28 02:13:59,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811138014527845 [2024-06-28 02:13:59,410 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 722 flow. Second operand 7 states and 240 transitions. [2024-06-28 02:13:59,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 200 transitions, 1545 flow [2024-06-28 02:13:59,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 200 transitions, 1429 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 02:13:59,462 INFO L231 Difference]: Finished difference. Result has 94 places, 127 transitions, 973 flow [2024-06-28 02:13:59,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=973, PETRI_PLACES=94, PETRI_TRANSITIONS=127} [2024-06-28 02:13:59,463 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 29 predicate places. [2024-06-28 02:13:59,463 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 973 flow [2024-06-28 02:13:59,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:13:59,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:13:59,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:13:59,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:13:59,464 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:13:59,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:13:59,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1853397282, now seen corresponding path program 2 times [2024-06-28 02:13:59,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:13:59,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282191282] [2024-06-28 02:13:59,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:13:59,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:13:59,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:02,421 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 02:14:02,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282191282] [2024-06-28 02:14:02,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282191282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:02,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:02,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:02,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605717301] [2024-06-28 02:14:02,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:02,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:02,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:02,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:02,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 02:14:02,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 127 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 02:14:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:06,328 INFO L124 PetriNetUnfolderBase]: 18586/25754 cut-off events. [2024-06-28 02:14:06,329 INFO L125 PetriNetUnfolderBase]: For 79109/80036 co-relation queries the response was YES. [2024-06-28 02:14:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91191 conditions, 25754 events. 18586/25754 cut-off events. For 79109/80036 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 158255 event pairs, 7002 based on Foata normal form. 144/25239 useless extension candidates. Maximal degree in co-relation 91157. Up to 24388 conditions per place. [2024-06-28 02:14:06,594 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 136 selfloop transitions, 49 changer transitions 0/202 dead transitions. [2024-06-28 02:14:06,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 202 transitions, 1581 flow [2024-06-28 02:14:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:14:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:14:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-06-28 02:14:06,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835351089588378 [2024-06-28 02:14:06,596 INFO L175 Difference]: Start difference. First operand has 94 places, 127 transitions, 973 flow. Second operand 7 states and 241 transitions. [2024-06-28 02:14:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 202 transitions, 1581 flow [2024-06-28 02:14:06,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 202 transitions, 1555 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-28 02:14:06,690 INFO L231 Difference]: Finished difference. Result has 100 places, 135 transitions, 1137 flow [2024-06-28 02:14:06,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1137, PETRI_PLACES=100, PETRI_TRANSITIONS=135} [2024-06-28 02:14:06,691 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 35 predicate places. [2024-06-28 02:14:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 135 transitions, 1137 flow [2024-06-28 02:14:06,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:06,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:06,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:06,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:14:06,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:06,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:06,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1675097794, now seen corresponding path program 2 times [2024-06-28 02:14:06,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641126123] [2024-06-28 02:14:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:09,996 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 02:14:09,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:09,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641126123] [2024-06-28 02:14:09,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641126123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:09,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:09,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:09,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966910384] [2024-06-28 02:14:09,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:09,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:09,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:09,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:09,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:10,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:14:10,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 135 transitions, 1137 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:10,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:10,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:14:10,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:14,063 INFO L124 PetriNetUnfolderBase]: 19360/26597 cut-off events. [2024-06-28 02:14:14,063 INFO L125 PetriNetUnfolderBase]: For 76762/76885 co-relation queries the response was YES. [2024-06-28 02:14:14,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93008 conditions, 26597 events. 19360/26597 cut-off events. For 76762/76885 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 156845 event pairs, 7764 based on Foata normal form. 60/26647 useless extension candidates. Maximal degree in co-relation 92971. Up to 25555 conditions per place. [2024-06-28 02:14:14,328 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 147 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-28 02:14:14,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 197 transitions, 1752 flow [2024-06-28 02:14:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:14:14,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:14:14,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-06-28 02:14:14,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2024-06-28 02:14:14,330 INFO L175 Difference]: Start difference. First operand has 100 places, 135 transitions, 1137 flow. Second operand 6 states and 206 transitions. [2024-06-28 02:14:14,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 197 transitions, 1752 flow [2024-06-28 02:14:14,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 197 transitions, 1640 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:14,404 INFO L231 Difference]: Finished difference. Result has 103 places, 140 transitions, 1189 flow [2024-06-28 02:14:14,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1189, PETRI_PLACES=103, PETRI_TRANSITIONS=140} [2024-06-28 02:14:14,405 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 38 predicate places. [2024-06-28 02:14:14,405 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 140 transitions, 1189 flow [2024-06-28 02:14:14,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:14,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:14,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:14,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:14:14,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:14,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1675334944, now seen corresponding path program 3 times [2024-06-28 02:14:14,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:14,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42536812] [2024-06-28 02:14:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:14,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:14,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:17,381 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 02:14:17,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:17,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42536812] [2024-06-28 02:14:17,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42536812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:17,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:17,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:17,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721712104] [2024-06-28 02:14:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:17,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:17,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:17,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:14:17,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 140 transitions, 1189 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:17,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:17,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:14:17,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:21,372 INFO L124 PetriNetUnfolderBase]: 19351/26608 cut-off events. [2024-06-28 02:14:21,375 INFO L125 PetriNetUnfolderBase]: For 83951/84395 co-relation queries the response was YES. [2024-06-28 02:14:21,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93858 conditions, 26608 events. 19351/26608 cut-off events. For 83951/84395 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 157584 event pairs, 7831 based on Foata normal form. 80/26669 useless extension candidates. Maximal degree in co-relation 93819. Up to 25546 conditions per place. [2024-06-28 02:14:21,690 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 143 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-28 02:14:21,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 193 transitions, 1708 flow [2024-06-28 02:14:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:14:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:14:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-28 02:14:21,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559322033898305 [2024-06-28 02:14:21,693 INFO L175 Difference]: Start difference. First operand has 103 places, 140 transitions, 1189 flow. Second operand 6 states and 198 transitions. [2024-06-28 02:14:21,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 193 transitions, 1708 flow [2024-06-28 02:14:21,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 193 transitions, 1631 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:21,855 INFO L231 Difference]: Finished difference. Result has 106 places, 143 transitions, 1249 flow [2024-06-28 02:14:21,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1249, PETRI_PLACES=106, PETRI_TRANSITIONS=143} [2024-06-28 02:14:21,857 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 41 predicate places. [2024-06-28 02:14:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 143 transitions, 1249 flow [2024-06-28 02:14:21,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:21,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:21,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:21,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:14:21,858 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:21,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:21,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1675097608, now seen corresponding path program 3 times [2024-06-28 02:14:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:21,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107993040] [2024-06-28 02:14:21,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:21,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:24,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:24,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:24,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107993040] [2024-06-28 02:14:24,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107993040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:24,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:24,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:24,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614992755] [2024-06-28 02:14:24,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:24,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:24,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:24,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:24,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:24,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-28 02:14:24,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 143 transitions, 1249 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:24,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:24,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-28 02:14:24,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:28,899 INFO L124 PetriNetUnfolderBase]: 18599/25783 cut-off events. [2024-06-28 02:14:28,899 INFO L125 PetriNetUnfolderBase]: For 90835/91508 co-relation queries the response was YES. [2024-06-28 02:14:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93210 conditions, 25783 events. 18599/25783 cut-off events. For 90835/91508 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 158148 event pairs, 7005 based on Foata normal form. 147/25278 useless extension candidates. Maximal degree in co-relation 93170. Up to 24290 conditions per place. [2024-06-28 02:14:29,139 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 122 selfloop transitions, 57 changer transitions 0/199 dead transitions. [2024-06-28 02:14:29,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 199 transitions, 1745 flow [2024-06-28 02:14:29,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:14:29,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:14:29,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-06-28 02:14:29,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596045197740113 [2024-06-28 02:14:29,141 INFO L175 Difference]: Start difference. First operand has 106 places, 143 transitions, 1249 flow. Second operand 6 states and 211 transitions. [2024-06-28 02:14:29,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 199 transitions, 1745 flow [2024-06-28 02:14:29,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 199 transitions, 1698 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:14:29,241 INFO L231 Difference]: Finished difference. Result has 110 places, 143 transitions, 1340 flow [2024-06-28 02:14:29,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1340, PETRI_PLACES=110, PETRI_TRANSITIONS=143} [2024-06-28 02:14:29,242 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 45 predicate places. [2024-06-28 02:14:29,242 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 143 transitions, 1340 flow [2024-06-28 02:14:29,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:29,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:29,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:29,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:14:29,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:29,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:29,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1675343872, now seen corresponding path program 1 times [2024-06-28 02:14:29,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:29,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517380306] [2024-06-28 02:14:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:29,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:32,195 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 02:14:32,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:32,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517380306] [2024-06-28 02:14:32,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517380306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:32,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:32,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:14:32,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849511868] [2024-06-28 02:14:32,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:32,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:14:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:14:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:14:32,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:14:32,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 143 transitions, 1340 flow. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:32,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:32,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:14:32,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:36,265 INFO L124 PetriNetUnfolderBase]: 19320/27502 cut-off events. [2024-06-28 02:14:36,266 INFO L125 PetriNetUnfolderBase]: For 92702/92892 co-relation queries the response was YES. [2024-06-28 02:14:36,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95937 conditions, 27502 events. 19320/27502 cut-off events. For 92702/92892 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 172850 event pairs, 8404 based on Foata normal form. 52/27547 useless extension candidates. Maximal degree in co-relation 95895. Up to 25654 conditions per place. [2024-06-28 02:14:36,589 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 164 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-28 02:14:36,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 192 transitions, 1845 flow [2024-06-28 02:14:36,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:14:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:14:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-28 02:14:36,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451977401129944 [2024-06-28 02:14:36,591 INFO L175 Difference]: Start difference. First operand has 110 places, 143 transitions, 1340 flow. Second operand 6 states and 193 transitions. [2024-06-28 02:14:36,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 192 transitions, 1845 flow [2024-06-28 02:14:36,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 192 transitions, 1725 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:14:36,701 INFO L231 Difference]: Finished difference. Result has 111 places, 147 transitions, 1309 flow [2024-06-28 02:14:36,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1309, PETRI_PLACES=111, PETRI_TRANSITIONS=147} [2024-06-28 02:14:36,703 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 46 predicate places. [2024-06-28 02:14:36,703 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 147 transitions, 1309 flow [2024-06-28 02:14:36,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:36,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:36,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:36,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:14:36,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:36,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1624458202, now seen corresponding path program 1 times [2024-06-28 02:14:36,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660258940] [2024-06-28 02:14:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:41,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:14:41,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:41,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660258940] [2024-06-28 02:14:41,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660258940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:41,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:41,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:41,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804727381] [2024-06-28 02:14:41,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:41,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:41,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:41,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:14:41,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 147 transitions, 1309 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:41,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:41,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:14:41,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:46,513 INFO L124 PetriNetUnfolderBase]: 19371/26639 cut-off events. [2024-06-28 02:14:46,513 INFO L125 PetriNetUnfolderBase]: For 101920/102045 co-relation queries the response was YES. [2024-06-28 02:14:46,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98803 conditions, 26639 events. 19371/26639 cut-off events. For 101920/102045 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 158073 event pairs, 7267 based on Foata normal form. 62/26692 useless extension candidates. Maximal degree in co-relation 98760. Up to 25310 conditions per place. [2024-06-28 02:14:46,776 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 189 selfloop transitions, 59 changer transitions 0/258 dead transitions. [2024-06-28 02:14:46,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 258 transitions, 2280 flow [2024-06-28 02:14:46,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:14:46,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:14:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-06-28 02:14:46,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-06-28 02:14:46,778 INFO L175 Difference]: Start difference. First operand has 111 places, 147 transitions, 1309 flow. Second operand 8 states and 280 transitions. [2024-06-28 02:14:46,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 258 transitions, 2280 flow [2024-06-28 02:14:46,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 258 transitions, 2223 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 02:14:46,865 INFO L231 Difference]: Finished difference. Result has 117 places, 166 transitions, 1595 flow [2024-06-28 02:14:46,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1595, PETRI_PLACES=117, PETRI_TRANSITIONS=166} [2024-06-28 02:14:46,866 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2024-06-28 02:14:46,866 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 166 transitions, 1595 flow [2024-06-28 02:14:46,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:46,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:46,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:46,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:14:46,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:46,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:46,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1620733552, now seen corresponding path program 2 times [2024-06-28 02:14:46,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:46,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898014311] [2024-06-28 02:14:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:46,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:46,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:14:50,553 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 02:14:50,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:14:50,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898014311] [2024-06-28 02:14:50,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898014311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:14:50,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:14:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:14:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512394536] [2024-06-28 02:14:50,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:14:50,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:14:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:14:50,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:14:50,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:14:50,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:14:50,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 166 transitions, 1595 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:50,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:14:50,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:14:50,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:14:55,230 INFO L124 PetriNetUnfolderBase]: 19482/26815 cut-off events. [2024-06-28 02:14:55,230 INFO L125 PetriNetUnfolderBase]: For 124320/124443 co-relation queries the response was YES. [2024-06-28 02:14:55,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105584 conditions, 26815 events. 19482/26815 cut-off events. For 124320/124443 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 159359 event pairs, 7263 based on Foata normal form. 62/26868 useless extension candidates. Maximal degree in co-relation 105538. Up to 25621 conditions per place. [2024-06-28 02:14:55,514 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 228 selfloop transitions, 54 changer transitions 0/292 dead transitions. [2024-06-28 02:14:55,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 292 transitions, 2638 flow [2024-06-28 02:14:55,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:14:55,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:14:55,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 342 transitions. [2024-06-28 02:14:55,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796610169491525 [2024-06-28 02:14:55,517 INFO L175 Difference]: Start difference. First operand has 117 places, 166 transitions, 1595 flow. Second operand 10 states and 342 transitions. [2024-06-28 02:14:55,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 292 transitions, 2638 flow [2024-06-28 02:14:55,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 292 transitions, 2553 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 02:14:56,214 INFO L231 Difference]: Finished difference. Result has 125 places, 176 transitions, 1754 flow [2024-06-28 02:14:56,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1524, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1754, PETRI_PLACES=125, PETRI_TRANSITIONS=176} [2024-06-28 02:14:56,214 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 60 predicate places. [2024-06-28 02:14:56,215 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 176 transitions, 1754 flow [2024-06-28 02:14:56,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:14:56,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:14:56,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:14:56,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:14:56,215 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:14:56,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:14:56,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1620739132, now seen corresponding path program 3 times [2024-06-28 02:14:56,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:14:56,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014094306] [2024-06-28 02:14:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:14:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:14:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:00,003 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 02:15:00,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:00,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014094306] [2024-06-28 02:15:00,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014094306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:00,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:00,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:00,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287324349] [2024-06-28 02:15:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:00,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:00,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:00,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:00,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:15:00,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 176 transitions, 1754 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:00,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:00,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:15:00,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:04,710 INFO L124 PetriNetUnfolderBase]: 19473/26803 cut-off events. [2024-06-28 02:15:04,710 INFO L125 PetriNetUnfolderBase]: For 132177/132300 co-relation queries the response was YES. [2024-06-28 02:15:04,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106691 conditions, 26803 events. 19473/26803 cut-off events. For 132177/132300 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 159059 event pairs, 7263 based on Foata normal form. 62/26856 useless extension candidates. Maximal degree in co-relation 106642. Up to 25612 conditions per place. [2024-06-28 02:15:04,978 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 196 selfloop transitions, 53 changer transitions 0/259 dead transitions. [2024-06-28 02:15:04,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 259 transitions, 2469 flow [2024-06-28 02:15:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:15:04,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:15:04,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2024-06-28 02:15:04,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783898305084746 [2024-06-28 02:15:04,981 INFO L175 Difference]: Start difference. First operand has 125 places, 176 transitions, 1754 flow. Second operand 8 states and 273 transitions. [2024-06-28 02:15:04,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 259 transitions, 2469 flow [2024-06-28 02:15:05,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 259 transitions, 2398 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 02:15:05,138 INFO L231 Difference]: Finished difference. Result has 128 places, 176 transitions, 1800 flow [2024-06-28 02:15:05,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1800, PETRI_PLACES=128, PETRI_TRANSITIONS=176} [2024-06-28 02:15:05,140 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 63 predicate places. [2024-06-28 02:15:05,140 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 176 transitions, 1800 flow [2024-06-28 02:15:05,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:05,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:05,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:05,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:15:05,141 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:05,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:05,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1358117108, now seen corresponding path program 4 times [2024-06-28 02:15:05,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:05,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636404999] [2024-06-28 02:15:05,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:05,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:09,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:15:09,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:09,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636404999] [2024-06-28 02:15:09,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636404999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:09,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:09,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:09,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461280593] [2024-06-28 02:15:09,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:09,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:09,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:09,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:09,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:15:09,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 176 transitions, 1800 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:09,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:09,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:15:09,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:14,681 INFO L124 PetriNetUnfolderBase]: 19524/26888 cut-off events. [2024-06-28 02:15:14,681 INFO L125 PetriNetUnfolderBase]: For 141507/141630 co-relation queries the response was YES. [2024-06-28 02:15:14,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108263 conditions, 26888 events. 19524/26888 cut-off events. For 141507/141630 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 159986 event pairs, 7267 based on Foata normal form. 62/26941 useless extension candidates. Maximal degree in co-relation 108212. Up to 25528 conditions per place. [2024-06-28 02:15:14,990 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 180 selfloop transitions, 66 changer transitions 0/256 dead transitions. [2024-06-28 02:15:14,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 256 transitions, 2620 flow [2024-06-28 02:15:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:15:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:15:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-06-28 02:15:14,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5956416464891041 [2024-06-28 02:15:14,992 INFO L175 Difference]: Start difference. First operand has 128 places, 176 transitions, 1800 flow. Second operand 7 states and 246 transitions. [2024-06-28 02:15:14,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 256 transitions, 2620 flow [2024-06-28 02:15:15,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 256 transitions, 2514 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 02:15:15,181 INFO L231 Difference]: Finished difference. Result has 129 places, 181 transitions, 1925 flow [2024-06-28 02:15:15,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1694, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1925, PETRI_PLACES=129, PETRI_TRANSITIONS=181} [2024-06-28 02:15:15,182 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 64 predicate places. [2024-06-28 02:15:15,182 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 181 transitions, 1925 flow [2024-06-28 02:15:15,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:15,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:15,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:15,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:15:15,183 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:15,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:15,183 INFO L85 PathProgramCache]: Analyzing trace with hash 540910800, now seen corresponding path program 5 times [2024-06-28 02:15:15,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:15,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047996049] [2024-06-28 02:15:15,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:15,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:19,195 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 02:15:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047996049] [2024-06-28 02:15:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047996049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003527570] [2024-06-28 02:15:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:19,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:19,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:19,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:19,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:15:19,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 181 transitions, 1925 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:19,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:19,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:15:19,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:24,710 INFO L124 PetriNetUnfolderBase]: 19575/26971 cut-off events. [2024-06-28 02:15:24,710 INFO L125 PetriNetUnfolderBase]: For 152442/152565 co-relation queries the response was YES. [2024-06-28 02:15:24,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110107 conditions, 26971 events. 19575/26971 cut-off events. For 152442/152565 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 160322 event pairs, 7263 based on Foata normal form. 62/27024 useless extension candidates. Maximal degree in co-relation 110054. Up to 25580 conditions per place. [2024-06-28 02:15:24,900 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 208 selfloop transitions, 72 changer transitions 0/290 dead transitions. [2024-06-28 02:15:24,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 290 transitions, 2902 flow [2024-06-28 02:15:24,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:15:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:15:24,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2024-06-28 02:15:24,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591337099811676 [2024-06-28 02:15:24,903 INFO L175 Difference]: Start difference. First operand has 129 places, 181 transitions, 1925 flow. Second operand 9 states and 314 transitions. [2024-06-28 02:15:24,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 290 transitions, 2902 flow [2024-06-28 02:15:25,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 290 transitions, 2739 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:15:25,089 INFO L231 Difference]: Finished difference. Result has 132 places, 185 transitions, 1988 flow [2024-06-28 02:15:25,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1988, PETRI_PLACES=132, PETRI_TRANSITIONS=185} [2024-06-28 02:15:25,090 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 67 predicate places. [2024-06-28 02:15:25,090 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 185 transitions, 1988 flow [2024-06-28 02:15:25,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:25,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:25,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:25,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:15:25,091 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:25,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 395777288, now seen corresponding path program 6 times [2024-06-28 02:15:25,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:25,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84682928] [2024-06-28 02:15:25,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:25,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:15:28,256 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 02:15:28,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:15:28,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84682928] [2024-06-28 02:15:28,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84682928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:15:28,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:15:28,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:15:28,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235815810] [2024-06-28 02:15:28,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:15:28,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:15:28,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:15:28,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:15:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:15:28,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-28 02:15:28,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 185 transitions, 1988 flow. Second operand has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:28,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:15:28,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-28 02:15:28,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:15:33,290 INFO L124 PetriNetUnfolderBase]: 19566/26975 cut-off events. [2024-06-28 02:15:33,291 INFO L125 PetriNetUnfolderBase]: For 154981/155989 co-relation queries the response was YES. [2024-06-28 02:15:33,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110055 conditions, 26975 events. 19566/26975 cut-off events. For 154981/155989 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 160817 event pairs, 7321 based on Foata normal form. 164/27120 useless extension candidates. Maximal degree in co-relation 110002. Up to 25571 conditions per place. [2024-06-28 02:15:33,498 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 204 selfloop transitions, 71 changer transitions 0/285 dead transitions. [2024-06-28 02:15:33,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 285 transitions, 2815 flow [2024-06-28 02:15:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:15:33,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:15:33,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2024-06-28 02:15:33,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5743879472693032 [2024-06-28 02:15:33,502 INFO L175 Difference]: Start difference. First operand has 132 places, 185 transitions, 1988 flow. Second operand 9 states and 305 transitions. [2024-06-28 02:15:33,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 285 transitions, 2815 flow [2024-06-28 02:15:33,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 285 transitions, 2646 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:15:33,688 INFO L231 Difference]: Finished difference. Result has 133 places, 186 transitions, 1984 flow [2024-06-28 02:15:33,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1821, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1984, PETRI_PLACES=133, PETRI_TRANSITIONS=186} [2024-06-28 02:15:33,688 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 68 predicate places. [2024-06-28 02:15:33,688 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 186 transitions, 1984 flow [2024-06-28 02:15:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.444444444444443) internal successors, (148), 9 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:15:33,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:15:33,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:15:33,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:15:33,689 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-28 02:15:33,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:15:33,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2027899173, now seen corresponding path program 1 times [2024-06-28 02:15:33,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:15:33,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724568130] [2024-06-28 02:15:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:15:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:15:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat