./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe019_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe019_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 19:03:54,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:03:54,215 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:03:54,223 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:03:54,223 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:03:54,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:03:54,264 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:03:54,264 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:03:54,265 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:03:54,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:03:54,266 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:03:54,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:03:54,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:03:54,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:03:54,268 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:03:54,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:03:54,269 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:03:54,271 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:03:54,272 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:03:54,272 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:03:54,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:03:54,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:03:54,273 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:03:54,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:03:54,273 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:03:54,273 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:03:54,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:03:54,274 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:03:54,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:03:54,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:03:54,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:03:54,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:03:54,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:03:54,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:03:54,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:03:54,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:03:54,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:03:54,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:03:54,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:03:54,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:03:54,277 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:03:54,277 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:03:54,277 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:03:54,277 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:03:54,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:03:54,487 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:03:54,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:03:54,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:03:54,490 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:03:54,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-27 19:03:55,494 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:03:55,657 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:03:55,658 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_rmo.opt.i [2024-06-27 19:03:55,668 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced45c3bf/074e491e1e8148b7a3be232620bbc15c/FLAGd76f2bc63 [2024-06-27 19:03:55,678 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ced45c3bf/074e491e1e8148b7a3be232620bbc15c [2024-06-27 19:03:55,679 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:03:55,680 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:03:55,680 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe019_rmo.opt.yml/witness.yml [2024-06-27 19:03:55,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:03:55,909 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:03:55,911 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:03:55,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:03:55,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:03:55,916 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:03:55" (1/2) ... [2024-06-27 19:03:55,917 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb6c961 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:03:55, skipping insertion in model container [2024-06-27 19:03:55,917 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:03:55" (1/2) ... [2024-06-27 19:03:55,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a35d15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:03:55, skipping insertion in model container [2024-06-27 19:03:55,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:03:55" (2/2) ... [2024-06-27 19:03:55,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb6c961 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:55, skipping insertion in model container [2024-06-27 19:03:55,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:03:55" (2/2) ... [2024-06-27 19:03:55,919 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:03:56,088 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:03:56,090 INFO L97 edCorrectnessWitness]: Location invariant before [L874-L874] ((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0) [2024-06-27 19:03:56,090 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] ((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0) [2024-06-27 19:03:56,090 INFO L97 edCorrectnessWitness]: Location invariant before [L876-L876] ((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0) [2024-06-27 19:03:56,090 INFO L97 edCorrectnessWitness]: Location invariant before [L878-L878] ((((((((((((((((((((((((((((((((((((((((! multithreaded || __unbuffered_p2_EAX$w_buff1_used == (_Bool)0) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$mem_tmp == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || __unbuffered_p2_EAX$w_buff0_used == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || x$w_buff1 == 0)) && (! multithreaded || (x$mem_tmp == 0 || x$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || __unbuffered_p2_EAX$w_buff1 == 0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || x$w_buff0_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$w_buff0 == 0)) && (! multithreaded || x$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX$read_delayed_var == 0 || (__unbuffered_p2_EAX$read_delayed_var == & x && (*__unbuffered_p2_EAX$read_delayed_var == 0 || *__unbuffered_p2_EAX$read_delayed_var == 1))))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$w_buff1_used == (_Bool)0)) && (! multithreaded || __unbuffered_p2_EAX$w_buff0 == 0) [2024-06-27 19:03:56,090 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:03:56,091 INFO L106 edCorrectnessWitness]: ghost_update [L872-L872] multithreaded = 1; [2024-06-27 19:03:56,137 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:03:56,299 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/safe019_rmo.opt.i[992,1005] [2024-06-27 19:03:56,419 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:03:56,428 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:03:56,475 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/safe019_rmo.opt.i[992,1005] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:03:56,601 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:03:56,635 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:03:56,636 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56 WrapperNode [2024-06-27 19:03:56,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:03:56,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:03:56,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:03:56,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:03:56,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,685 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 195 [2024-06-27 19:03:56,685 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:03:56,686 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:03:56,686 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:03:56,686 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:03:56,694 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,698 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,715 INFO L175 MemorySlicer]: Split 41 memory accesses to 2 slices as follows [2, 39]. 95 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-27 19:03:56,715 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,716 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,730 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,734 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:03:56,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:03:56,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:03:56,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:03:56,739 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (1/1) ... [2024-06-27 19:03:56,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:03:56,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:03:56,775 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 19:03:56,793 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 19:03:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-27 19:03:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-27 19:03:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-27 19:03:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-27 19:03:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:03:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:03:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:03:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:03:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:03:56,808 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:03:56,808 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:03:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:03:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 19:03:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 19:03:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:03:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 19:03:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:03:56,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:03:56,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:03:56,813 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 19:03:56,969 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:03:56,970 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:03:57,492 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:03:57,492 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:03:57,816 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:03:57,816 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:03:57,817 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:03:57 BoogieIcfgContainer [2024-06-27 19:03:57,817 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:03:57,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:03:57,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:03:57,822 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:03:57,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:03:55" (1/4) ... [2024-06-27 19:03:57,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc639b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:03:57, skipping insertion in model container [2024-06-27 19:03:57,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:03:55" (2/4) ... [2024-06-27 19:03:57,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc639b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:03:57, skipping insertion in model container [2024-06-27 19:03:57,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:03:56" (3/4) ... [2024-06-27 19:03:57,823 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc639b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:03:57, skipping insertion in model container [2024-06-27 19:03:57,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:03:57" (4/4) ... [2024-06-27 19:03:57,824 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-06-27 19:03:57,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:03:57,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:03:57,838 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:03:57,910 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:03:57,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:03:57,971 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 19:03:57,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:03:57,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 19:03:57,974 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 19:03:57,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 112 flow [2024-06-27 19:03:57,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:03:57,996 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;@6c7f43a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:03:57,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:03:58,000 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:03:58,001 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:03:58,001 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:03:58,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:03:58,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:03:58,002 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 19:03:58,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:03:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash 756281393, now seen corresponding path program 1 times [2024-06-27 19:03:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:03:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791070727] [2024-06-27 19:03:58,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:03:58,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:03:58,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:03:59,917 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 19:03:59,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:03:59,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791070727] [2024-06-27 19:03:59,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791070727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:03:59,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:03:59,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:03:59,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893141815] [2024-06-27 19:03:59,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:03:59,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:03:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:03:59,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:03:59,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:03:59,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 57 [2024-06-27 19:03:59,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 19:03:59,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:03:59,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 57 [2024-06-27 19:03:59,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:03,433 INFO L124 PetriNetUnfolderBase]: 18171/25494 cut-off events. [2024-06-27 19:04:03,433 INFO L125 PetriNetUnfolderBase]: For 139/139 co-relation queries the response was YES. [2024-06-27 19:04:03,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50074 conditions, 25494 events. 18171/25494 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1008. Compared 156619 event pairs, 10957 based on Foata normal form. 0/24750 useless extension candidates. Maximal degree in co-relation 50061. Up to 24231 conditions per place. [2024-06-27 19:04:03,588 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 58 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-06-27 19:04:03,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 73 transitions, 295 flow [2024-06-27 19:04:03,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:04:03,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:04:03,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 19:04:03,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6432748538011696 [2024-06-27 19:04:03,599 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 112 flow. Second operand 3 states and 110 transitions. [2024-06-27 19:04:03,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 73 transitions, 295 flow [2024-06-27 19:04:03,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 73 transitions, 288 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 19:04:03,604 INFO L231 Difference]: Finished difference. Result has 62 places, 55 transitions, 154 flow [2024-06-27 19:04:03,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=62, PETRI_TRANSITIONS=55} [2024-06-27 19:04:03,608 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2024-06-27 19:04:03,608 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 55 transitions, 154 flow [2024-06-27 19:04:03,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 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 19:04:03,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:03,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:03,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:04:03,609 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 19:04:03,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:03,610 INFO L85 PathProgramCache]: Analyzing trace with hash 138050083, now seen corresponding path program 1 times [2024-06-27 19:04:03,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:03,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809677601] [2024-06-27 19:04:03,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:03,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:03,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:06,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809677601] [2024-06-27 19:04:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809677601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:06,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:06,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:04:06,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508242552] [2024-06-27 19:04:06,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:06,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:04:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:06,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:04:06,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:04:06,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:04:06,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 55 transitions, 154 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 19:04:06,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:06,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:04:06,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:10,799 INFO L124 PetriNetUnfolderBase]: 23075/32220 cut-off events. [2024-06-27 19:04:10,799 INFO L125 PetriNetUnfolderBase]: For 5114/5114 co-relation queries the response was YES. [2024-06-27 19:04:10,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70685 conditions, 32220 events. 23075/32220 cut-off events. For 5114/5114 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 195030 event pairs, 10936 based on Foata normal form. 8/32218 useless extension candidates. Maximal degree in co-relation 70673. Up to 30548 conditions per place. [2024-06-27 19:04:10,966 INFO L140 encePairwiseOnDemand]: 47/57 looper letters, 73 selfloop transitions, 10 changer transitions 0/91 dead transitions. [2024-06-27 19:04:10,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 91 transitions, 408 flow [2024-06-27 19:04:10,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:04:10,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:04:10,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-27 19:04:10,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6096491228070176 [2024-06-27 19:04:10,973 INFO L175 Difference]: Start difference. First operand has 62 places, 55 transitions, 154 flow. Second operand 4 states and 139 transitions. [2024-06-27 19:04:10,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 91 transitions, 408 flow [2024-06-27 19:04:10,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 91 transitions, 402 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:04:10,981 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 199 flow [2024-06-27 19:04:10,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-06-27 19:04:10,986 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 1 predicate places. [2024-06-27 19:04:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 199 flow [2024-06-27 19:04:10,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 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 19:04:10,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:10,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:10,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:04:10,987 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:10,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:10,987 INFO L85 PathProgramCache]: Analyzing trace with hash 738912407, now seen corresponding path program 1 times [2024-06-27 19:04:10,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:10,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908381820] [2024-06-27 19:04:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:12,547 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 19:04:12,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:12,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908381820] [2024-06-27 19:04:12,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908381820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:12,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:12,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:04:12,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600935732] [2024-06-27 19:04:12,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:12,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:04:12,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:12,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:04:12,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:04:12,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:04:12,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 199 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:12,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:12,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:04:12,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:16,670 INFO L124 PetriNetUnfolderBase]: 18137/25460 cut-off events. [2024-06-27 19:04:16,671 INFO L125 PetriNetUnfolderBase]: For 11113/11113 co-relation queries the response was YES. [2024-06-27 19:04:16,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60784 conditions, 25460 events. 18137/25460 cut-off events. For 11113/11113 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 156748 event pairs, 9550 based on Foata normal form. 6/25462 useless extension candidates. Maximal degree in co-relation 60769. Up to 24164 conditions per place. [2024-06-27 19:04:16,826 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 79 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-27 19:04:16,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 99 transitions, 501 flow [2024-06-27 19:04:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:04:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:04:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 19:04:16,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 19:04:16,831 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 199 flow. Second operand 5 states and 150 transitions. [2024-06-27 19:04:16,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 99 transitions, 501 flow [2024-06-27 19:04:16,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 99 transitions, 470 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:04:16,837 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 276 flow [2024-06-27 19:04:16,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 19:04:16,838 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2024-06-27 19:04:16,838 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 276 flow [2024-06-27 19:04:16,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:16,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:16,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:16,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:04:16,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:16,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:16,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1678335104, now seen corresponding path program 1 times [2024-06-27 19:04:16,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:16,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883477737] [2024-06-27 19:04:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:16,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:20,397 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 19:04:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:20,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883477737] [2024-06-27 19:04:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883477737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:20,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:04:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124224935] [2024-06-27 19:04:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:20,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:04:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:04:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:04:20,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:04:20,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 276 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:20,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:20,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:04:20,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:24,202 INFO L124 PetriNetUnfolderBase]: 18122/25439 cut-off events. [2024-06-27 19:04:24,203 INFO L125 PetriNetUnfolderBase]: For 19943/19943 co-relation queries the response was YES. [2024-06-27 19:04:24,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66757 conditions, 25439 events. 18122/25439 cut-off events. For 19943/19943 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 156331 event pairs, 9213 based on Foata normal form. 6/25441 useless extension candidates. Maximal degree in co-relation 66739. Up to 24089 conditions per place. [2024-06-27 19:04:24,363 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 93 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2024-06-27 19:04:24,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 117 transitions, 626 flow [2024-06-27 19:04:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:04:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:04:24,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 19:04:24,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2024-06-27 19:04:24,365 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 276 flow. Second operand 6 states and 181 transitions. [2024-06-27 19:04:24,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 117 transitions, 626 flow [2024-06-27 19:04:24,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 117 transitions, 612 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-06-27 19:04:24,375 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 341 flow [2024-06-27 19:04:24,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=341, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 19:04:24,377 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2024-06-27 19:04:24,377 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 341 flow [2024-06-27 19:04:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:24,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:24,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:24,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:04:24,379 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 19:04:24,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1056824722, now seen corresponding path program 1 times [2024-06-27 19:04:24,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:24,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097818579] [2024-06-27 19:04:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:27,670 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 19:04:27,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:27,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097818579] [2024-06-27 19:04:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097818579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:27,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:27,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:04:27,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142763431] [2024-06-27 19:04:27,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:27,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:04:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:27,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:04:27,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:04:27,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-06-27 19:04:27,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 341 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:27,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:27,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-06-27 19:04:27,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:31,976 INFO L124 PetriNetUnfolderBase]: 23097/32274 cut-off events. [2024-06-27 19:04:31,977 INFO L125 PetriNetUnfolderBase]: For 39029/39029 co-relation queries the response was YES. [2024-06-27 19:04:32,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89489 conditions, 32274 events. 23097/32274 cut-off events. For 39029/39029 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 195383 event pairs, 10292 based on Foata normal form. 6/32270 useless extension candidates. Maximal degree in co-relation 89468. Up to 30454 conditions per place. [2024-06-27 19:04:32,178 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 82 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-27 19:04:32,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 661 flow [2024-06-27 19:04:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:04:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:04:32,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 150 transitions. [2024-06-27 19:04:32,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-27 19:04:32,180 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 341 flow. Second operand 5 states and 150 transitions. [2024-06-27 19:04:32,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 661 flow [2024-06-27 19:04:32,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 614 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 19:04:32,195 INFO L231 Difference]: Finished difference. Result has 74 places, 77 transitions, 402 flow [2024-06-27 19:04:32,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=74, PETRI_TRANSITIONS=77} [2024-06-27 19:04:32,196 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2024-06-27 19:04:32,196 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 77 transitions, 402 flow [2024-06-27 19:04:32,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:32,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:32,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:32,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:04:32,197 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 19:04:32,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:32,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1443536840, now seen corresponding path program 2 times [2024-06-27 19:04:32,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:32,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885959667] [2024-06-27 19:04:32,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:32,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:34,448 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 19:04:34,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:34,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885959667] [2024-06-27 19:04:34,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885959667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:34,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:34,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:04:34,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16234357] [2024-06-27 19:04:34,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:34,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:04:34,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:34,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:04:34,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:04:34,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-06-27 19:04:34,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 77 transitions, 402 flow. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:34,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:34,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-06-27 19:04:34,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:38,844 INFO L124 PetriNetUnfolderBase]: 23079/32250 cut-off events. [2024-06-27 19:04:38,844 INFO L125 PetriNetUnfolderBase]: For 59340/59340 co-relation queries the response was YES. [2024-06-27 19:04:38,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96346 conditions, 32250 events. 23079/32250 cut-off events. For 59340/59340 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 196122 event pairs, 10292 based on Foata normal form. 6/32246 useless extension candidates. Maximal degree in co-relation 96324. Up to 30362 conditions per place. [2024-06-27 19:04:39,067 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 96 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-06-27 19:04:39,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 129 transitions, 802 flow [2024-06-27 19:04:39,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:04:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:04:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 181 transitions. [2024-06-27 19:04:39,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2024-06-27 19:04:39,068 INFO L175 Difference]: Start difference. First operand has 74 places, 77 transitions, 402 flow. Second operand 6 states and 181 transitions. [2024-06-27 19:04:39,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 129 transitions, 802 flow [2024-06-27 19:04:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 129 transitions, 730 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 19:04:39,104 INFO L231 Difference]: Finished difference. Result has 77 places, 82 transitions, 452 flow [2024-06-27 19:04:39,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=77, PETRI_TRANSITIONS=82} [2024-06-27 19:04:39,105 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2024-06-27 19:04:39,105 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 82 transitions, 452 flow [2024-06-27 19:04:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:39,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:39,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:39,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:04:39,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:04:39,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -995754064, now seen corresponding path program 1 times [2024-06-27 19:04:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:39,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525852680] [2024-06-27 19:04:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:39,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:41,182 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 19:04:41,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:41,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525852680] [2024-06-27 19:04:41,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525852680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:41,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:41,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:04:41,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834742760] [2024-06-27 19:04:41,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:41,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:04:41,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:41,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:04:41,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:04:41,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 57 [2024-06-27 19:04:41,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 82 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:41,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:41,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 57 [2024-06-27 19:04:41,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:44,780 INFO L124 PetriNetUnfolderBase]: 18178/25527 cut-off events. [2024-06-27 19:04:44,781 INFO L125 PetriNetUnfolderBase]: For 51693/51693 co-relation queries the response was YES. [2024-06-27 19:04:44,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79345 conditions, 25527 events. 18178/25527 cut-off events. For 51693/51693 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 156819 event pairs, 9308 based on Foata normal form. 4/25523 useless extension candidates. Maximal degree in co-relation 79322. Up to 24172 conditions per place. [2024-06-27 19:04:44,901 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 96 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 19:04:44,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 832 flow [2024-06-27 19:04:44,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:04:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:04:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-06-27 19:04:44,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519298245614035 [2024-06-27 19:04:44,903 INFO L175 Difference]: Start difference. First operand has 77 places, 82 transitions, 452 flow. Second operand 5 states and 148 transitions. [2024-06-27 19:04:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 832 flow [2024-06-27 19:04:44,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 121 transitions, 756 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-27 19:04:44,925 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 509 flow [2024-06-27 19:04:44,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=509, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2024-06-27 19:04:44,926 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 16 predicate places. [2024-06-27 19:04:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 509 flow [2024-06-27 19:04:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:44,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:04:44,928 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 19:04:44,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1958404549, now seen corresponding path program 1 times [2024-06-27 19:04:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:44,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66830875] [2024-06-27 19:04:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:46,919 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 19:04:46,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:46,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66830875] [2024-06-27 19:04:46,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66830875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:46,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:46,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:46,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758737756] [2024-06-27 19:04:46,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:46,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:46,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-06-27 19:04:46,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 509 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:04:46,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:46,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-06-27 19:04:46,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:51,461 INFO L124 PetriNetUnfolderBase]: 23737/33212 cut-off events. [2024-06-27 19:04:51,461 INFO L125 PetriNetUnfolderBase]: For 95139/95139 co-relation queries the response was YES. [2024-06-27 19:04:51,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109273 conditions, 33212 events. 23737/33212 cut-off events. For 95139/95139 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 203135 event pairs, 7085 based on Foata normal form. 24/33226 useless extension candidates. Maximal degree in co-relation 109248. Up to 30463 conditions per place. [2024-06-27 19:04:51,695 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 126 selfloop transitions, 35 changer transitions 0/168 dead transitions. [2024-06-27 19:04:51,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 168 transitions, 1123 flow [2024-06-27 19:04:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:04:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:04:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-06-27 19:04:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538847117794486 [2024-06-27 19:04:51,698 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 509 flow. Second operand 7 states and 221 transitions. [2024-06-27 19:04:51,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 168 transitions, 1123 flow [2024-06-27 19:04:51,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 168 transitions, 1103 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-27 19:04:51,748 INFO L231 Difference]: Finished difference. Result has 85 places, 96 transitions, 655 flow [2024-06-27 19:04:51,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=655, PETRI_PLACES=85, PETRI_TRANSITIONS=96} [2024-06-27 19:04:51,748 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 22 predicate places. [2024-06-27 19:04:51,749 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 96 transitions, 655 flow [2024-06-27 19:04:51,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:04:51,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:51,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:51,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:04:51,749 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 19:04:51,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1442159661, now seen corresponding path program 2 times [2024-06-27 19:04:51,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:51,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921629298] [2024-06-27 19:04:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:54,602 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 19:04:54,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:54,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921629298] [2024-06-27 19:04:54,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921629298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:54,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:54,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:04:54,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573912631] [2024-06-27 19:04:54,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:04:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:54,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:04:54,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:04:54,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-06-27 19:04:54,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 96 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:04:54,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:54,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-06-27 19:04:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:59,421 INFO L124 PetriNetUnfolderBase]: 23668/33113 cut-off events. [2024-06-27 19:04:59,421 INFO L125 PetriNetUnfolderBase]: For 116222/116222 co-relation queries the response was YES. [2024-06-27 19:04:59,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113442 conditions, 33113 events. 23668/33113 cut-off events. For 116222/116222 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 201693 event pairs, 8656 based on Foata normal form. 30/33133 useless extension candidates. Maximal degree in co-relation 113414. Up to 30775 conditions per place. [2024-06-27 19:04:59,626 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 113 selfloop transitions, 28 changer transitions 0/148 dead transitions. [2024-06-27 19:04:59,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 148 transitions, 1067 flow [2024-06-27 19:04:59,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:04:59,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:04:59,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 19:04:59,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409356725146199 [2024-06-27 19:04:59,628 INFO L175 Difference]: Start difference. First operand has 85 places, 96 transitions, 655 flow. Second operand 6 states and 185 transitions. [2024-06-27 19:04:59,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 148 transitions, 1067 flow [2024-06-27 19:04:59,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 148 transitions, 1019 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 19:04:59,704 INFO L231 Difference]: Finished difference. Result has 88 places, 96 transitions, 679 flow [2024-06-27 19:04:59,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=679, PETRI_PLACES=88, PETRI_TRANSITIONS=96} [2024-06-27 19:04:59,705 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 25 predicate places. [2024-06-27 19:04:59,705 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 96 transitions, 679 flow [2024-06-27 19:04:59,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:04:59,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:59,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:59,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:04:59,706 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 19:04:59,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:59,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1687633361, now seen corresponding path program 3 times [2024-06-27 19:04:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:59,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553036458] [2024-06-27 19:04:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:59,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:02,841 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 19:05:02,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:02,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553036458] [2024-06-27 19:05:02,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553036458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:02,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:02,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:02,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032263452] [2024-06-27 19:05:02,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:02,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:02,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:02,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:02,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:02,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 57 [2024-06-27 19:05:02,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 96 transitions, 679 flow. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:05:02,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:02,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 57 [2024-06-27 19:05:02,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:07,943 INFO L124 PetriNetUnfolderBase]: 23832/33349 cut-off events. [2024-06-27 19:05:07,943 INFO L125 PetriNetUnfolderBase]: For 124253/124253 co-relation queries the response was YES. [2024-06-27 19:05:08,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115611 conditions, 33349 events. 23832/33349 cut-off events. For 124253/124253 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 203231 event pairs, 9593 based on Foata normal form. 30/33369 useless extension candidates. Maximal degree in co-relation 115581. Up to 31079 conditions per place. [2024-06-27 19:05:08,184 INFO L140 encePairwiseOnDemand]: 45/57 looper letters, 128 selfloop transitions, 29 changer transitions 0/164 dead transitions. [2024-06-27 19:05:08,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 164 transitions, 1199 flow [2024-06-27 19:05:08,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:08,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 214 transitions. [2024-06-27 19:05:08,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5363408521303258 [2024-06-27 19:05:08,187 INFO L175 Difference]: Start difference. First operand has 88 places, 96 transitions, 679 flow. Second operand 7 states and 214 transitions. [2024-06-27 19:05:08,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 164 transitions, 1199 flow [2024-06-27 19:05:08,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 164 transitions, 1132 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:08,278 INFO L231 Difference]: Finished difference. Result has 90 places, 99 transitions, 733 flow [2024-06-27 19:05:08,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=733, PETRI_PLACES=90, PETRI_TRANSITIONS=99} [2024-06-27 19:05:08,279 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 27 predicate places. [2024-06-27 19:05:08,279 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 99 transitions, 733 flow [2024-06-27 19:05:08,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 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 19:05:08,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:08,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:08,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:05:08,279 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 19:05:08,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:08,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1687817811, now seen corresponding path program 1 times [2024-06-27 19:05:08,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:08,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709997330] [2024-06-27 19:05:08,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:08,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat