./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/protection/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/protection/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 [2024-06-27 19:09:49,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:09:49,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:09:49,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:09:49,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:09:49,264 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:09:49,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:09:49,265 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:09:49,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:09:49,268 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:09:49,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:09:49,269 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:09:49,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:09:49,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:09:49,271 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:09:49,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:09:49,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:09:49,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:09:49,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:09:49,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:09:49,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:09:49,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:09:49,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:09:49,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:09:49,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:09:49,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:09:49,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:09:49,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:09:49,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:09:49,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:09:49,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:09:49,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:09:49,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:09:49,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:09:49,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:09:49,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:09:49,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:09:49,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:09:49,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:09:49,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:09:49,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:09:49,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:09:49,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:09:49,278 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:09:49,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:09:49,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:09:49,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:09:49,514 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:09:49,514 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:09:49,515 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/thin002_rmo.yml/witness.yml [2024-06-27 19:09:49,753 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:09:49,754 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:09:49,754 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-27 19:09:50,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:09:51,053 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:09:51,053 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin002_rmo.i [2024-06-27 19:09:51,068 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1562fa6da/40688b00d0cd40c7ad5b54f24cf65284/FLAG77508012f [2024-06-27 19:09:51,079 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1562fa6da/40688b00d0cd40c7ad5b54f24cf65284 [2024-06-27 19:09:51,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:09:51,081 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:09:51,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:09:51,084 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:09:51,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:09:51,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:49" (1/2) ... [2024-06-27 19:09:51,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82302a0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:51, skipping insertion in model container [2024-06-27 19:09:51,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:49" (1/2) ... [2024-06-27 19:09:51,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@32027bac and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:09:51, skipping insertion in model container [2024-06-27 19:09:51,090 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:09:51" (2/2) ... [2024-06-27 19:09:51,090 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82302a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51, skipping insertion in model container [2024-06-27 19:09:51,090 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:09:51" (2/2) ... [2024-06-27 19:09:51,090 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:09:51,253 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:09:51,254 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:09:51,255 INFO L97 edCorrectnessWitness]: Location invariant before [L863-L863] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd2 == (_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 || a$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:09:51,255 INFO L97 edCorrectnessWitness]: Location invariant before [L868-L868] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EAX$read_delayed_var == 0 || (__unbuffered_p0_EAX$read_delayed_var == & a && (*__unbuffered_p0_EAX$read_delayed_var == 0 || *__unbuffered_p0_EAX$read_delayed_var == 1))))) && (! multithreaded || a$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:09:51,255 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] (((((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p0_EAX$r_buff0_thd4 == (_Bool)0) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff0 == 0)) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1 == 0)) && (! multithreaded || a$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || a$w_buff1 == 0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || __unbuffered_p0_EAX$mem_tmp == 0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || a$r_buff1_thd2 == (_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 || a$w_buff0_used == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || __unbuffered_p0_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || a$w_buff0 == 0)) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p0_EAX$w_buff1_used == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || a$w_buff1_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) [2024-06-27 19:09:51,255 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:09:51,256 INFO L106 edCorrectnessWitness]: ghost_update [L861-L861] multithreaded = 1; [2024-06-27 19:09:51,278 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:09:51,418 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] [2024-06-27 19:09:51,597 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:09:51,610 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:09:51,637 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 [2024-06-27 19:09:51,735 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:09:51,777 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:09:51,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51 WrapperNode [2024-06-27 19:09:51,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:09:51,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:09:51,780 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:09:51,780 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:09:51,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,810 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,842 INFO L138 Inliner]: procedures = 176, calls = 80, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 198 [2024-06-27 19:09:51,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:09:51,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:09:51,848 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:09:51,848 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:09:51,861 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,861 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,903 INFO L175 MemorySlicer]: Split 31 memory accesses to 2 slices as follows [2, 29]. 94 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]. [2024-06-27 19:09:51,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,904 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,931 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,933 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:09:51,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:09:51,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:09:51,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:09:51,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (1/1) ... [2024-06-27 19:09:51,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:09:51,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:09:51,986 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) [2024-06-27 19:09:51,994 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 [2024-06-27 19:09:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:09:52,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:09:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:09:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:09:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:09:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:09:52,022 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:09:52,022 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:09:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:09:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:09:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:09:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:09:52,023 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:09:52,023 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:09:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:09:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:09:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:09:52,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:09:52,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:09:52,025 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:09:52,156 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:09:52,158 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:09:52,638 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:09:52,638 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:09:52,934 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:09:52,934 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:09:52,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:09:52 BoogieIcfgContainer [2024-06-27 19:09:52,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:09:52,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:09:52,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:09:52,941 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:09:52,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:09:49" (1/4) ... [2024-06-27 19:09:52,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ffed95 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:09:52, skipping insertion in model container [2024-06-27 19:09:52,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:09:51" (2/4) ... [2024-06-27 19:09:52,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ffed95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:09:52, skipping insertion in model container [2024-06-27 19:09:52,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:09:51" (3/4) ... [2024-06-27 19:09:52,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40ffed95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:09:52, skipping insertion in model container [2024-06-27 19:09:52,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:09:52" (4/4) ... [2024-06-27 19:09:52,943 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_rmo.i [2024-06-27 19:09:52,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:09:52,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:09:52,957 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:09:53,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:09:53,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 19:09:53,071 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 19:09:53,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:09:53,075 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 77 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. [2024-06-27 19:09:53,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 19:09:53,079 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 52 transitions, 116 flow [2024-06-27 19:09:53,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:09:53,095 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;@6db8e955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:09:53,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:09:53,100 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:09:53,100 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:09:53,100 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:09:53,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:53,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:09:53,102 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)] === [2024-06-27 19:09:53,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash 609737833, now seen corresponding path program 1 times [2024-06-27 19:09:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:53,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729114378] [2024-06-27 19:09:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:55,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:55,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:55,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729114378] [2024-06-27 19:09:55,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729114378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:55,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:55,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:09:55,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957902572] [2024-06-27 19:09:55,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:55,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:09:55,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:55,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:09:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:09:55,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 19:09:55,215 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) [2024-06-27 19:09:55,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:55,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 19:09:55,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:57,254 INFO L124 PetriNetUnfolderBase]: 11846/17104 cut-off events. [2024-06-27 19:09:57,255 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2024-06-27 19:09:57,280 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 107656 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. [2024-06-27 19:09:57,363 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 55 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-06-27 19:09:57,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 291 flow [2024-06-27 19:09:57,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:09:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:09:57,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 19:09:57,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.672316384180791 [2024-06-27 19:09:57,375 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 116 flow. Second operand 3 states and 119 transitions. [2024-06-27 19:09:57,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 291 flow [2024-06-27 19:09:57,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:57,381 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-27 19:09:57,382 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} [2024-06-27 19:09:57,384 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-27 19:09:57,385 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-27 19:09:57,385 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) [2024-06-27 19:09:57,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:57,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:57,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:09:57,386 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)] === [2024-06-27 19:09:57,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:57,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1842562184, now seen corresponding path program 1 times [2024-06-27 19:09:57,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:57,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880605834] [2024-06-27 19:09:57,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:57,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:59,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:59,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880605834] [2024-06-27 19:09:59,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880605834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:59,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:59,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:09:59,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713696621] [2024-06-27 19:09:59,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:59,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:09:59,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:59,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:09:59,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:09:59,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 19:09:59,867 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) [2024-06-27 19:09:59,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:59,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 19:09:59,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:02,199 INFO L124 PetriNetUnfolderBase]: 11836/16455 cut-off events. [2024-06-27 19:10:02,200 INFO L125 PetriNetUnfolderBase]: For 2997/3008 co-relation queries the response was YES. [2024-06-27 19:10:02,228 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 96382 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. [2024-06-27 19:10:02,290 INFO L140 encePairwiseOnDemand]: 49/59 looper letters, 76 selfloop transitions, 13 changer transitions 0/102 dead transitions. [2024-06-27 19:10:02,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 102 transitions, 454 flow [2024-06-27 19:10:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:10:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:10:02,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 161 transitions. [2024-06-27 19:10:02,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6822033898305084 [2024-06-27 19:10:02,306 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 4 states and 161 transitions. [2024-06-27 19:10:02,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 102 transitions, 454 flow [2024-06-27 19:10:02,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 102 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:10:02,309 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 241 flow [2024-06-27 19:10:02,310 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} [2024-06-27 19:10:02,310 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 3 predicate places. [2024-06-27 19:10:02,311 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 241 flow [2024-06-27 19:10:02,311 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) [2024-06-27 19:10:02,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:02,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:10:02,311 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)] === [2024-06-27 19:10:02,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:02,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1284854696, now seen corresponding path program 1 times [2024-06-27 19:10:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283287081] [2024-06-27 19:10:02,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:02,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:02,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:04,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:04,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283287081] [2024-06-27 19:10:04,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283287081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:04,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:04,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:10:04,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069090811] [2024-06-27 19:10:04,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:04,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:10:04,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:04,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:10:04,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:10:04,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 19:10:04,958 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) [2024-06-27 19:10:04,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:04,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 19:10:04,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:07,502 INFO L124 PetriNetUnfolderBase]: 15023/20762 cut-off events. [2024-06-27 19:10:07,502 INFO L125 PetriNetUnfolderBase]: For 11735/11755 co-relation queries the response was YES. [2024-06-27 19:10:07,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52473 conditions, 20762 events. 15023/20762 cut-off events. For 11735/11755 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 122033 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. [2024-06-27 19:10:07,613 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 109 selfloop transitions, 16 changer transitions 0/137 dead transitions. [2024-06-27 19:10:07,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 137 transitions, 712 flow [2024-06-27 19:10:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:10:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:10:07,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 198 transitions. [2024-06-27 19:10:07,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6711864406779661 [2024-06-27 19:10:07,615 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 241 flow. Second operand 5 states and 198 transitions. [2024-06-27 19:10:07,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 137 transitions, 712 flow [2024-06-27 19:10:07,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 137 transitions, 712 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 19:10:07,626 INFO L231 Difference]: Finished difference. Result has 75 places, 80 transitions, 409 flow [2024-06-27 19:10:07,627 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} [2024-06-27 19:10:07,627 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 10 predicate places. [2024-06-27 19:10:07,627 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 80 transitions, 409 flow [2024-06-27 19:10:07,628 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) [2024-06-27 19:10:07,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:07,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:07,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:10:07,628 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)] === [2024-06-27 19:10:07,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:07,629 INFO L85 PathProgramCache]: Analyzing trace with hash 2089808807, now seen corresponding path program 1 times [2024-06-27 19:10:07,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:07,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773939209] [2024-06-27 19:10:07,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:10,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:10,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:10,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773939209] [2024-06-27 19:10:10,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773939209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:10,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:10,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:10:10,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717285978] [2024-06-27 19:10:10,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:10:10,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:10,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:10:10,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:10:10,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 19:10:10,413 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) [2024-06-27 19:10:10,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:10,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 19:10:10,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:13,212 INFO L124 PetriNetUnfolderBase]: 15007/20754 cut-off events. [2024-06-27 19:10:13,212 INFO L125 PetriNetUnfolderBase]: For 19147/19217 co-relation queries the response was YES. [2024-06-27 19:10:13,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57427 conditions, 20754 events. 15007/20754 cut-off events. For 19147/19217 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 122560 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. [2024-06-27 19:10:13,327 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 124 selfloop transitions, 19 changer transitions 0/155 dead transitions. [2024-06-27 19:10:13,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 155 transitions, 883 flow [2024-06-27 19:10:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:10:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:10:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-06-27 19:10:13,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581920903954802 [2024-06-27 19:10:13,329 INFO L175 Difference]: Start difference. First operand has 75 places, 80 transitions, 409 flow. Second operand 6 states and 233 transitions. [2024-06-27 19:10:13,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 155 transitions, 883 flow [2024-06-27 19:10:13,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 155 transitions, 879 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 19:10:13,341 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 471 flow [2024-06-27 19:10:13,341 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} [2024-06-27 19:10:13,342 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 15 predicate places. [2024-06-27 19:10:13,342 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 471 flow [2024-06-27 19:10:13,342 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) [2024-06-27 19:10:13,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:13,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:13,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:10:13,343 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)] === [2024-06-27 19:10:13,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:13,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1400638505, now seen corresponding path program 1 times [2024-06-27 19:10:13,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:13,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837078685] [2024-06-27 19:10:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:15,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:15,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:15,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837078685] [2024-06-27 19:10:15,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837078685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:15,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:15,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:10:15,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493556667] [2024-06-27 19:10:15,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:15,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:10:15,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:10:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:10:15,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:10:15,657 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) [2024-06-27 19:10:15,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:15,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:10:15,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:19,123 INFO L124 PetriNetUnfolderBase]: 18976/26974 cut-off events. [2024-06-27 19:10:19,124 INFO L125 PetriNetUnfolderBase]: For 34512/34563 co-relation queries the response was YES. [2024-06-27 19:10:19,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76495 conditions, 26974 events. 18976/26974 cut-off events. For 34512/34563 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 169021 event pairs, 9349 based on Foata normal form. 18/26984 useless extension candidates. Maximal degree in co-relation 76471. Up to 25262 conditions per place. [2024-06-27 19:10:19,301 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 101 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2024-06-27 19:10:19,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 125 transitions, 860 flow [2024-06-27 19:10:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:10:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:10:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-27 19:10:19,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-06-27 19:10:19,304 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 471 flow. Second operand 5 states and 160 transitions. [2024-06-27 19:10:19,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 125 transitions, 860 flow [2024-06-27 19:10:19,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 125 transitions, 810 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:19,323 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 575 flow [2024-06-27 19:10:19,324 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} [2024-06-27 19:10:19,324 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-06-27 19:10:19,324 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 575 flow [2024-06-27 19:10:19,325 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) [2024-06-27 19:10:19,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:19,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:19,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:10:19,325 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)] === [2024-06-27 19:10:19,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:19,326 INFO L85 PathProgramCache]: Analyzing trace with hash 156618480, now seen corresponding path program 1 times [2024-06-27 19:10:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:19,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802416569] [2024-06-27 19:10:19,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:19,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:22,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:22,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:22,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802416569] [2024-06-27 19:10:22,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802416569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:22,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:22,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:22,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852510332] [2024-06-27 19:10:22,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:22,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:22,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:22,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:22,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:22,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 19:10:22,549 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) [2024-06-27 19:10:22,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:22,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 19:10:22,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:26,320 INFO L124 PetriNetUnfolderBase]: 18655/25726 cut-off events. [2024-06-27 19:10:26,320 INFO L125 PetriNetUnfolderBase]: For 52278/52522 co-relation queries the response was YES. [2024-06-27 19:10:26,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83256 conditions, 25726 events. 18655/25726 cut-off events. For 52278/52522 co-relation queries the response was YES. Maximal size of possible extension queue 1065. Compared 154122 event pairs, 7286 based on Foata normal form. 73/25746 useless extension candidates. Maximal degree in co-relation 83229. Up to 24590 conditions per place. [2024-06-27 19:10:26,540 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 123 selfloop transitions, 40 changer transitions 0/176 dead transitions. [2024-06-27 19:10:26,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 176 transitions, 1177 flow [2024-06-27 19:10:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-06-27 19:10:26,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029055690072639 [2024-06-27 19:10:26,542 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 575 flow. Second operand 7 states and 249 transitions. [2024-06-27 19:10:26,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 176 transitions, 1177 flow [2024-06-27 19:10:26,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 176 transitions, 1161 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 19:10:26,576 INFO L231 Difference]: Finished difference. Result has 88 places, 102 transitions, 722 flow [2024-06-27 19:10:26,576 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} [2024-06-27 19:10:26,576 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 23 predicate places. [2024-06-27 19:10:26,577 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 102 transitions, 722 flow [2024-06-27 19:10:26,577 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) [2024-06-27 19:10:26,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:26,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:26,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:10:26,577 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)] === [2024-06-27 19:10:26,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:26,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1511514474, now seen corresponding path program 1 times [2024-06-27 19:10:26,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:26,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761197100] [2024-06-27 19:10:26,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:26,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:29,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:29,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:29,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761197100] [2024-06-27 19:10:29,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761197100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:29,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:29,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:29,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685912046] [2024-06-27 19:10:29,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:29,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:29,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:29,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:10:29,707 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) [2024-06-27 19:10:29,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:29,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:10:29,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:33,548 INFO L124 PetriNetUnfolderBase]: 19172/26318 cut-off events. [2024-06-27 19:10:33,549 INFO L125 PetriNetUnfolderBase]: For 64853/64944 co-relation queries the response was YES. [2024-06-27 19:10:33,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88227 conditions, 26318 events. 19172/26318 cut-off events. For 64853/64944 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 155419 event pairs, 7762 based on Foata normal form. 36/26342 useless extension candidates. Maximal degree in co-relation 88197. Up to 25326 conditions per place. [2024-06-27 19:10:33,757 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 154 selfloop transitions, 36 changer transitions 0/200 dead transitions. [2024-06-27 19:10:33,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 200 transitions, 1545 flow [2024-06-27 19:10:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:33,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 240 transitions. [2024-06-27 19:10:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811138014527845 [2024-06-27 19:10:33,759 INFO L175 Difference]: Start difference. First operand has 88 places, 102 transitions, 722 flow. Second operand 7 states and 240 transitions. [2024-06-27 19:10:33,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 200 transitions, 1545 flow [2024-06-27 19:10:33,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 200 transitions, 1429 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:33,812 INFO L231 Difference]: Finished difference. Result has 94 places, 127 transitions, 973 flow [2024-06-27 19:10:33,812 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} [2024-06-27 19:10:33,812 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 29 predicate places. [2024-06-27 19:10:33,813 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 127 transitions, 973 flow [2024-06-27 19:10:33,813 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) [2024-06-27 19:10:33,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:33,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:33,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:10:33,813 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)] === [2024-06-27 19:10:33,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash 694847456, now seen corresponding path program 2 times [2024-06-27 19:10:33,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:33,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934277533] [2024-06-27 19:10:33,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:33,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:36,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:36,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934277533] [2024-06-27 19:10:36,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934277533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:36,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:36,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:36,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240784372] [2024-06-27 19:10:36,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:36,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:36,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:36,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:36,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 19:10:36,584 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) [2024-06-27 19:10:36,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 19:10:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:40,365 INFO L124 PetriNetUnfolderBase]: 18586/25754 cut-off events. [2024-06-27 19:10:40,380 INFO L125 PetriNetUnfolderBase]: For 79201/80170 co-relation queries the response was YES. [2024-06-27 19:10:40,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91191 conditions, 25754 events. 18586/25754 cut-off events. For 79201/80170 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 158097 event pairs, 7002 based on Foata normal form. 144/25236 useless extension candidates. Maximal degree in co-relation 91157. Up to 24388 conditions per place. [2024-06-27 19:10:40,622 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 136 selfloop transitions, 49 changer transitions 0/202 dead transitions. [2024-06-27 19:10:40,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 202 transitions, 1581 flow [2024-06-27 19:10:40,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:10:40,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:10:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-06-27 19:10:40,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835351089588378 [2024-06-27 19:10:40,626 INFO L175 Difference]: Start difference. First operand has 94 places, 127 transitions, 973 flow. Second operand 7 states and 241 transitions. [2024-06-27 19:10:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 202 transitions, 1581 flow [2024-06-27 19:10:40,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 202 transitions, 1555 flow, removed 12 selfloop flow, removed 1 redundant places. [2024-06-27 19:10:40,718 INFO L231 Difference]: Finished difference. Result has 100 places, 135 transitions, 1137 flow [2024-06-27 19:10:40,718 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} [2024-06-27 19:10:40,719 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 35 predicate places. [2024-06-27 19:10:40,719 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 135 transitions, 1137 flow [2024-06-27 19:10:40,719 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) [2024-06-27 19:10:40,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:40,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:40,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:10:40,720 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)] === [2024-06-27 19:10:40,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:40,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1072174496, now seen corresponding path program 3 times [2024-06-27 19:10:40,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:40,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899804601] [2024-06-27 19:10:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:43,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:43,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:43,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899804601] [2024-06-27 19:10:43,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899804601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:43,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:43,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:43,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004794948] [2024-06-27 19:10:43,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:43,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:43,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:43,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:43,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:43,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 19:10:43,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 135 transitions, 1137 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) [2024-06-27 19:10:43,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:43,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 19:10:43,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:48,004 INFO L124 PetriNetUnfolderBase]: 18584/25753 cut-off events. [2024-06-27 19:10:48,005 INFO L125 PetriNetUnfolderBase]: For 85996/86959 co-relation queries the response was YES. [2024-06-27 19:10:48,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92079 conditions, 25753 events. 18584/25753 cut-off events. For 85996/86959 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 158113 event pairs, 7005 based on Foata normal form. 212/25301 useless extension candidates. Maximal degree in co-relation 92042. Up to 24284 conditions per place. [2024-06-27 19:10:48,210 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 119 selfloop transitions, 55 changer transitions 0/191 dead transitions. [2024-06-27 19:10:48,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 191 transitions, 1623 flow [2024-06-27 19:10:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:10:48,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:10:48,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 211 transitions. [2024-06-27 19:10:48,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.596045197740113 [2024-06-27 19:10:48,212 INFO L175 Difference]: Start difference. First operand has 100 places, 135 transitions, 1137 flow. Second operand 6 states and 211 transitions. [2024-06-27 19:10:48,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 191 transitions, 1623 flow [2024-06-27 19:10:48,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 191 transitions, 1513 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-27 19:10:48,293 INFO L231 Difference]: Finished difference. Result has 102 places, 135 transitions, 1161 flow [2024-06-27 19:10:48,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1161, PETRI_PLACES=102, PETRI_TRANSITIONS=135} [2024-06-27 19:10:48,294 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 37 predicate places. [2024-06-27 19:10:48,294 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 135 transitions, 1161 flow [2024-06-27 19:10:48,295 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) [2024-06-27 19:10:48,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:48,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:48,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:10:48,295 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)] === [2024-06-27 19:10:48,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash 356991816, now seen corresponding path program 2 times [2024-06-27 19:10:48,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:48,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087457952] [2024-06-27 19:10:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:48,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:51,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:51,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087457952] [2024-06-27 19:10:51,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087457952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:51,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:51,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:51,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586900394] [2024-06-27 19:10:51,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:51,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:51,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:51,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:51,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:51,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:10:51,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 135 transitions, 1161 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) [2024-06-27 19:10:51,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:51,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:10:51,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:10:55,347 INFO L124 PetriNetUnfolderBase]: 19344/26575 cut-off events. [2024-06-27 19:10:55,347 INFO L125 PetriNetUnfolderBase]: For 82945/83097 co-relation queries the response was YES. [2024-06-27 19:10:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93888 conditions, 26575 events. 19344/26575 cut-off events. For 82945/83097 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 156718 event pairs, 7762 based on Foata normal form. 60/26623 useless extension candidates. Maximal degree in co-relation 93850. Up to 25534 conditions per place. [2024-06-27 19:10:55,533 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 147 selfloop transitions, 40 changer transitions 0/197 dead transitions. [2024-06-27 19:10:55,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 197 transitions, 1780 flow [2024-06-27 19:10:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:10:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:10:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-06-27 19:10:55,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2024-06-27 19:10:55,535 INFO L175 Difference]: Start difference. First operand has 102 places, 135 transitions, 1161 flow. Second operand 6 states and 206 transitions. [2024-06-27 19:10:55,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 197 transitions, 1780 flow [2024-06-27 19:10:55,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 197 transitions, 1654 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:10:55,608 INFO L231 Difference]: Finished difference. Result has 104 places, 140 transitions, 1203 flow [2024-06-27 19:10:55,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=97, 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=1203, PETRI_PLACES=104, PETRI_TRANSITIONS=140} [2024-06-27 19:10:55,608 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 39 predicate places. [2024-06-27 19:10:55,609 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 140 transitions, 1203 flow [2024-06-27 19:10:55,609 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) [2024-06-27 19:10:55,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:10:55,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:10:55,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:10:55,609 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)] === [2024-06-27 19:10:55,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:10:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash 357228966, now seen corresponding path program 3 times [2024-06-27 19:10:55,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:10:55,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9141704] [2024-06-27 19:10:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:10:55,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:10:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:10:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:10:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:10:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9141704] [2024-06-27 19:10:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9141704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:10:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:10:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:10:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815979875] [2024-06-27 19:10:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:10:58,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:10:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:10:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:10:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:10:58,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:10:58,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 140 transitions, 1203 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) [2024-06-27 19:10:58,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:10:58,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:10:58,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:01,859 INFO L124 PetriNetUnfolderBase]: 19335/26579 cut-off events. [2024-06-27 19:11:01,860 INFO L125 PetriNetUnfolderBase]: For 83735/84213 co-relation queries the response was YES. [2024-06-27 19:11:02,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93938 conditions, 26579 events. 19335/26579 cut-off events. For 83735/84213 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 157045 event pairs, 7792 based on Foata normal form. 80/26637 useless extension candidates. Maximal degree in co-relation 93898. Up to 25525 conditions per place. [2024-06-27 19:11:02,145 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 143 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-27 19:11:02,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 193 transitions, 1722 flow [2024-06-27 19:11:02,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:11:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:11:02,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-06-27 19:11:02,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.559322033898305 [2024-06-27 19:11:02,146 INFO L175 Difference]: Start difference. First operand has 104 places, 140 transitions, 1203 flow. Second operand 6 states and 198 transitions. [2024-06-27 19:11:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 193 transitions, 1722 flow [2024-06-27 19:11:02,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 193 transitions, 1645 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:02,243 INFO L231 Difference]: Finished difference. Result has 107 places, 143 transitions, 1263 flow [2024-06-27 19:11:02,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=100, 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=1263, PETRI_PLACES=107, PETRI_TRANSITIONS=143} [2024-06-27 19:11:02,244 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 42 predicate places. [2024-06-27 19:11:02,244 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 143 transitions, 1263 flow [2024-06-27 19:11:02,245 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) [2024-06-27 19:11:02,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:02,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:02,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:11:02,245 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)] === [2024-06-27 19:11:02,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:02,246 INFO L85 PathProgramCache]: Analyzing trace with hash 357237894, now seen corresponding path program 1 times [2024-06-27 19:11:02,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:02,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779816439] [2024-06-27 19:11:02,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:02,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:04,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:04,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779816439] [2024-06-27 19:11:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779816439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:04,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:04,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:11:04,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277275290] [2024-06-27 19:11:04,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:04,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:11:04,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:04,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:11:04,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:11:04,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:04,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 143 transitions, 1263 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) [2024-06-27 19:11:04,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:04,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:04,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:08,385 INFO L124 PetriNetUnfolderBase]: 19320/27502 cut-off events. [2024-06-27 19:11:08,386 INFO L125 PetriNetUnfolderBase]: For 83731/83979 co-relation queries the response was YES. [2024-06-27 19:11:08,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94957 conditions, 27502 events. 19320/27502 cut-off events. For 83731/83979 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 172772 event pairs, 8404 based on Foata normal form. 52/27546 useless extension candidates. Maximal degree in co-relation 94916. Up to 25654 conditions per place. [2024-06-27 19:11:08,640 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 164 selfloop transitions, 18 changer transitions 0/192 dead transitions. [2024-06-27 19:11:08,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 192 transitions, 1768 flow [2024-06-27 19:11:08,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:11:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:11:08,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 193 transitions. [2024-06-27 19:11:08,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5451977401129944 [2024-06-27 19:11:08,657 INFO L175 Difference]: Start difference. First operand has 107 places, 143 transitions, 1263 flow. Second operand 6 states and 193 transitions. [2024-06-27 19:11:08,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 192 transitions, 1768 flow [2024-06-27 19:11:08,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 192 transitions, 1725 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:11:08,725 INFO L231 Difference]: Finished difference. Result has 111 places, 147 transitions, 1309 flow [2024-06-27 19:11:08,725 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} [2024-06-27 19:11:08,726 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 46 predicate places. [2024-06-27 19:11:08,726 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 147 transitions, 1309 flow [2024-06-27 19:11:08,726 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) [2024-06-27 19:11:08,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:08,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:11:08,727 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)] === [2024-06-27 19:11:08,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:08,727 INFO L85 PathProgramCache]: Analyzing trace with hash 61717192, now seen corresponding path program 1 times [2024-06-27 19:11:08,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:08,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127701876] [2024-06-27 19:11:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:08,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:12,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:12,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127701876] [2024-06-27 19:11:12,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127701876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:12,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:12,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:12,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351183176] [2024-06-27 19:11:12,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:12,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:12,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:12,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:12,111 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) [2024-06-27 19:11:12,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:12,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:12,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:16,295 INFO L124 PetriNetUnfolderBase]: 19371/26638 cut-off events. [2024-06-27 19:11:16,295 INFO L125 PetriNetUnfolderBase]: For 101928/102086 co-relation queries the response was YES. [2024-06-27 19:11:16,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98802 conditions, 26638 events. 19371/26638 cut-off events. For 101928/102086 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 157657 event pairs, 7267 based on Foata normal form. 62/26689 useless extension candidates. Maximal degree in co-relation 98759. Up to 25310 conditions per place. [2024-06-27 19:11:16,538 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 189 selfloop transitions, 59 changer transitions 0/258 dead transitions. [2024-06-27 19:11:16,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 258 transitions, 2280 flow [2024-06-27 19:11:16,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:16,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:16,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-06-27 19:11:16,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2024-06-27 19:11:16,541 INFO L175 Difference]: Start difference. First operand has 111 places, 147 transitions, 1309 flow. Second operand 8 states and 280 transitions. [2024-06-27 19:11:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 258 transitions, 2280 flow [2024-06-27 19:11:16,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 258 transitions, 2223 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:16,659 INFO L231 Difference]: Finished difference. Result has 117 places, 166 transitions, 1595 flow [2024-06-27 19:11:16,659 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} [2024-06-27 19:11:16,660 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 52 predicate places. [2024-06-27 19:11:16,660 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 166 transitions, 1595 flow [2024-06-27 19:11:16,660 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) [2024-06-27 19:11:16,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:16,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:11:16,661 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)] === [2024-06-27 19:11:16,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:16,661 INFO L85 PathProgramCache]: Analyzing trace with hash -387695722, now seen corresponding path program 2 times [2024-06-27 19:11:16,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240293564] [2024-06-27 19:11:16,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:16,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:20,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:20,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:20,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240293564] [2024-06-27 19:11:20,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240293564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:20,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:20,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:20,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094037803] [2024-06-27 19:11:20,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:20,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:20,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:20,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:20,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:20,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:20,550 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) [2024-06-27 19:11:20,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:20,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:20,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:25,402 INFO L124 PetriNetUnfolderBase]: 19482/26814 cut-off events. [2024-06-27 19:11:25,402 INFO L125 PetriNetUnfolderBase]: For 124321/124477 co-relation queries the response was YES. [2024-06-27 19:11:25,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105583 conditions, 26814 events. 19482/26814 cut-off events. For 124321/124477 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 158804 event pairs, 7263 based on Foata normal form. 62/26865 useless extension candidates. Maximal degree in co-relation 105537. Up to 25621 conditions per place. [2024-06-27 19:11:25,617 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 199 selfloop transitions, 52 changer transitions 0/261 dead transitions. [2024-06-27 19:11:25,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 261 transitions, 2487 flow [2024-06-27 19:11:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:11:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:11:25,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-06-27 19:11:25,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5847457627118644 [2024-06-27 19:11:25,619 INFO L175 Difference]: Start difference. First operand has 117 places, 166 transitions, 1595 flow. Second operand 8 states and 276 transitions. [2024-06-27 19:11:25,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 261 transitions, 2487 flow [2024-06-27 19:11:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 261 transitions, 2404 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:11:25,740 INFO L231 Difference]: Finished difference. Result has 123 places, 175 transitions, 1747 flow [2024-06-27 19:11:25,740 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=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1747, PETRI_PLACES=123, PETRI_TRANSITIONS=175} [2024-06-27 19:11:25,740 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 58 predicate places. [2024-06-27 19:11:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 175 transitions, 1747 flow [2024-06-27 19:11:25,741 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) [2024-06-27 19:11:25,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:25,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:25,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:11:25,741 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)] === [2024-06-27 19:11:25,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 65441842, now seen corresponding path program 3 times [2024-06-27 19:11:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327332486] [2024-06-27 19:11:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:29,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327332486] [2024-06-27 19:11:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327332486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:29,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:29,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:29,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731447303] [2024-06-27 19:11:29,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:29,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:29,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:29,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:29,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:29,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:29,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 175 transitions, 1747 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) [2024-06-27 19:11:29,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:29,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:29,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:34,561 INFO L124 PetriNetUnfolderBase]: 19473/26802 cut-off events. [2024-06-27 19:11:34,562 INFO L125 PetriNetUnfolderBase]: For 132332/132488 co-relation queries the response was YES. [2024-06-27 19:11:34,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106726 conditions, 26802 events. 19473/26802 cut-off events. For 132332/132488 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 158701 event pairs, 7263 based on Foata normal form. 62/26853 useless extension candidates. Maximal degree in co-relation 106677. Up to 25612 conditions per place. [2024-06-27 19:11:34,785 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 225 selfloop transitions, 54 changer transitions 0/289 dead transitions. [2024-06-27 19:11:34,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 289 transitions, 2612 flow [2024-06-27 19:11:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:11:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:11:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 339 transitions. [2024-06-27 19:11:34,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745762711864407 [2024-06-27 19:11:34,789 INFO L175 Difference]: Start difference. First operand has 123 places, 175 transitions, 1747 flow. Second operand 10 states and 339 transitions. [2024-06-27 19:11:34,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 289 transitions, 2612 flow [2024-06-27 19:11:34,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 289 transitions, 2547 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:11:34,930 INFO L231 Difference]: Finished difference. Result has 129 places, 176 transitions, 1811 flow [2024-06-27 19:11:34,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1811, PETRI_PLACES=129, PETRI_TRANSITIONS=176} [2024-06-27 19:11:34,931 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 64 predicate places. [2024-06-27 19:11:34,931 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 176 transitions, 1811 flow [2024-06-27 19:11:34,932 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) [2024-06-27 19:11:34,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:34,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:34,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:11:34,932 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)] === [2024-06-27 19:11:34,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:34,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1817952362, now seen corresponding path program 4 times [2024-06-27 19:11:34,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:34,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131398545] [2024-06-27 19:11:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:34,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:38,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:38,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:38,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131398545] [2024-06-27 19:11:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131398545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:38,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:38,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:38,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231151263] [2024-06-27 19:11:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:38,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:38,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:38,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:38,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 176 transitions, 1811 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) [2024-06-27 19:11:38,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:38,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:38,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:43,071 INFO L124 PetriNetUnfolderBase]: 19524/26904 cut-off events. [2024-06-27 19:11:43,071 INFO L125 PetriNetUnfolderBase]: For 144809/145708 co-relation queries the response was YES. [2024-06-27 19:11:43,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108371 conditions, 26904 events. 19524/26904 cut-off events. For 144809/145708 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 159720 event pairs, 7321 based on Foata normal form. 145/27027 useless extension candidates. Maximal degree in co-relation 108320. Up to 25528 conditions per place. [2024-06-27 19:11:43,291 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 207 selfloop transitions, 67 changer transitions 0/284 dead transitions. [2024-06-27 19:11:43,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 284 transitions, 2774 flow [2024-06-27 19:11:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:43,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:43,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-06-27 19:11:43,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5800376647834274 [2024-06-27 19:11:43,294 INFO L175 Difference]: Start difference. First operand has 129 places, 176 transitions, 1811 flow. Second operand 9 states and 308 transitions. [2024-06-27 19:11:43,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 284 transitions, 2774 flow [2024-06-27 19:11:43,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 284 transitions, 2662 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 19:11:43,433 INFO L231 Difference]: Finished difference. Result has 131 places, 182 transitions, 1926 flow [2024-06-27 19:11:43,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1699, 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=9, PETRI_FLOW=1926, PETRI_PLACES=131, PETRI_TRANSITIONS=182} [2024-06-27 19:11:43,433 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 66 predicate places. [2024-06-27 19:11:43,434 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 182 transitions, 1926 flow [2024-06-27 19:11:43,434 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) [2024-06-27 19:11:43,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:43,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:43,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:11:43,434 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)] === [2024-06-27 19:11:43,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:43,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1818154172, now seen corresponding path program 5 times [2024-06-27 19:11:43,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:43,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931156865] [2024-06-27 19:11:43,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:43,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:46,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:46,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:46,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931156865] [2024-06-27 19:11:46,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931156865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:46,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:46,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:46,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471397386] [2024-06-27 19:11:46,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:46,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:46,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:46,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:46,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:47,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:47,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 182 transitions, 1926 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) [2024-06-27 19:11:47,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:47,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:47,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:11:52,554 INFO L124 PetriNetUnfolderBase]: 19575/26970 cut-off events. [2024-06-27 19:11:52,554 INFO L125 PetriNetUnfolderBase]: For 152190/152346 co-relation queries the response was YES. [2024-06-27 19:11:52,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109953 conditions, 26970 events. 19575/26970 cut-off events. For 152190/152346 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 160209 event pairs, 7263 based on Foata normal form. 62/27021 useless extension candidates. Maximal degree in co-relation 109900. Up to 25580 conditions per place. [2024-06-27 19:11:52,882 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 208 selfloop transitions, 73 changer transitions 0/291 dead transitions. [2024-06-27 19:11:52,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 291 transitions, 2901 flow [2024-06-27 19:11:52,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:11:52,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:11:52,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2024-06-27 19:11:52,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591337099811676 [2024-06-27 19:11:52,884 INFO L175 Difference]: Start difference. First operand has 131 places, 182 transitions, 1926 flow. Second operand 9 states and 314 transitions. [2024-06-27 19:11:52,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 291 transitions, 2901 flow [2024-06-27 19:11:53,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 291 transitions, 2737 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:11:53,128 INFO L231 Difference]: Finished difference. Result has 134 places, 186 transitions, 1980 flow [2024-06-27 19:11:53,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=1774, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1980, PETRI_PLACES=134, PETRI_TRANSITIONS=186} [2024-06-27 19:11:53,128 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 69 predicate places. [2024-06-27 19:11:53,129 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 186 transitions, 1980 flow [2024-06-27 19:11:53,129 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) [2024-06-27 19:11:53,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:11:53,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:11:53,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:11:53,129 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)] === [2024-06-27 19:11:53,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:11:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1818159752, now seen corresponding path program 6 times [2024-06-27 19:11:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:11:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058751021] [2024-06-27 19:11:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:11:53,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:11:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:11:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:11:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:11:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058751021] [2024-06-27 19:11:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058751021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:11:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:11:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:11:56,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954572466] [2024-06-27 19:11:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:11:56,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:11:56,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:11:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:11:56,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:11:56,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-06-27 19:11:56,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 186 transitions, 1980 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) [2024-06-27 19:11:56,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:11:56,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-06-27 19:11:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand