./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix020.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix020.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/mix020.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix020.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 18:22:41,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:22:41,246 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:22:41,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:22:41,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:22:41,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:22:41,285 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:22:41,285 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:22:41,286 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:22:41,291 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:22:41,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:22:41,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:22:41,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:22:41,294 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:22:41,295 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:22:41,295 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:22:41,295 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:22:41,296 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:22:41,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:22:41,296 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:22:41,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:22:41,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:22:41,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:22:41,298 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:22:41,298 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:22:41,298 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:22:41,298 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:22:41,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:22:41,299 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:22:41,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:22:41,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:22:41,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:22:41,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:41,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:22:41,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:22:41,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:22:41,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:22:41,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:22:41,303 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:22:41,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:22:41,303 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:22:41,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:22:41,304 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:22:41,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:22:41,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:22:41,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:22:41,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:22:41,627 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:22:41,628 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:22:41,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix020.opt.yml/witness.yml [2024-06-27 18:22:41,888 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:22:41,889 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:22:41,889 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix020.opt.i [2024-06-27 18:22:43,092 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:22:43,419 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:22:43,419 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix020.opt.i [2024-06-27 18:22:43,433 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8996d68b8/639434b417e740e18baf197cbc2b691f/FLAG007d53675 [2024-06-27 18:22:43,446 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8996d68b8/639434b417e740e18baf197cbc2b691f [2024-06-27 18:22:43,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:22:43,447 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:22:43,449 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:43,449 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:22:43,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:22:43,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:41" (1/2) ... [2024-06-27 18:22:43,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c63d076 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:43, skipping insertion in model container [2024-06-27 18:22:43,455 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:41" (1/2) ... [2024-06-27 18:22:43,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2431bb3b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:22:43, skipping insertion in model container [2024-06-27 18:22:43,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:43" (2/2) ... [2024-06-27 18:22:43,457 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c63d076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:43, skipping insertion in model container [2024-06-27 18:22:43,457 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:22:43" (2/2) ... [2024-06-27 18:22:43,458 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:22:43,588 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:22:43,590 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) [2024-06-27 18:22:43,590 INFO L97 edCorrectnessWitness]: Location invariant before [L872-L872] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) [2024-06-27 18:22:43,590 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) [2024-06-27 18:22:43,590 INFO L97 edCorrectnessWitness]: Location invariant before [L871-L871] ((((((((((((((((((((((! multithreaded || z$r_buff1_thd1 == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1)) [2024-06-27 18:22:43,590 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:22:43,591 INFO L106 edCorrectnessWitness]: ghost_update [L865-L865] multithreaded = 1; [2024-06-27 18:22:43,634 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:22:43,802 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/mix020.opt.i[944,957] [2024-06-27 18:22:44,015 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:44,026 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:22:44,064 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/mix020.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:22:44,177 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:22:44,207 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:22:44,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44 WrapperNode [2024-06-27 18:22:44,208 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:22:44,208 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:44,209 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:22:44,209 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:22:44,215 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,271 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 157 [2024-06-27 18:22:44,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:22:44,273 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:22:44,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:22:44,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:22:44,284 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,305 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:22:44,306 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,306 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,346 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:22:44,347 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:22:44,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:22:44,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:22:44,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (1/1) ... [2024-06-27 18:22:44,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:22:44,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:22:44,393 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 18:22:44,411 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 18:22:44,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:22:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:22:44,445 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:22:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:22:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:22:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:22:44,446 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:22:44,446 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:22:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:22:44,447 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:22:44,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:22:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:22:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:22:44,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:22:44,453 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 18:22:44,629 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:22:44,631 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:22:45,154 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:22:45,155 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:22:45,354 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:22:45,354 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:22:45,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:45 BoogieIcfgContainer [2024-06-27 18:22:45,355 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:22:45,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:22:45,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:22:45,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:22:45,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:22:41" (1/4) ... [2024-06-27 18:22:45,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5fbc41 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:22:45, skipping insertion in model container [2024-06-27 18:22:45,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:22:43" (2/4) ... [2024-06-27 18:22:45,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5fbc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:45, skipping insertion in model container [2024-06-27 18:22:45,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:22:44" (3/4) ... [2024-06-27 18:22:45,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f5fbc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:22:45, skipping insertion in model container [2024-06-27 18:22:45,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:22:45" (4/4) ... [2024-06-27 18:22:45,366 INFO L112 eAbstractionObserver]: Analyzing ICFG mix020.opt.i [2024-06-27 18:22:45,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:22:45,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:22:45,383 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:22:45,447 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:22:45,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:22:45,531 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 18:22:45,531 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:45,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 18:22:45,540 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:22:45,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 18:22:45,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:22:45,567 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;@270c8104, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:22:45,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:22:45,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:22:45,573 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:22:45,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:22:45,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:45,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:22:45,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:45,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:45,585 INFO L85 PathProgramCache]: Analyzing trace with hash 393830808, now seen corresponding path program 1 times [2024-06-27 18:22:45,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:45,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214286614] [2024-06-27 18:22:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:45,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:46,670 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 18:22:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:46,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214286614] [2024-06-27 18:22:46,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214286614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:46,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:46,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:22:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576533000] [2024-06-27 18:22:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:46,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:22:46,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:22:46,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:22:46,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 58 [2024-06-27 18:22:46,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 18:22:46,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:46,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 58 [2024-06-27 18:22:46,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:49,569 INFO L124 PetriNetUnfolderBase]: 16081/22295 cut-off events. [2024-06-27 18:22:49,569 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:22:49,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44025 conditions, 22295 events. 16081/22295 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 138390 event pairs, 10597 based on Foata normal form. 701/21997 useless extension candidates. Maximal degree in co-relation 44012. Up to 21459 conditions per place. [2024-06-27 18:22:49,721 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 50 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-27 18:22:49,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 277 flow [2024-06-27 18:22:49,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:22:49,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:22:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 122 transitions. [2024-06-27 18:22:49,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7011494252873564 [2024-06-27 18:22:49,734 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 122 transitions. [2024-06-27 18:22:49,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 277 flow [2024-06-27 18:22:49,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 270 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:22:49,740 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-27 18:22:49,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-27 18:22:49,745 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:22:49,745 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-27 18:22:49,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 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 18:22:49,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:49,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:49,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:22:49,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:49,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash 514317815, now seen corresponding path program 1 times [2024-06-27 18:22:49,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:49,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825661269] [2024-06-27 18:22:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:49,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:50,455 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 18:22:50,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:50,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825661269] [2024-06-27 18:22:50,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825661269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:50,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:50,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:22:50,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558720273] [2024-06-27 18:22:50,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:50,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:22:50,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:50,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:22:50,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:22:50,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 58 [2024-06-27 18:22:50,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:50,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:50,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 58 [2024-06-27 18:22:50,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:53,564 INFO L124 PetriNetUnfolderBase]: 18315/27356 cut-off events. [2024-06-27 18:22:53,565 INFO L125 PetriNetUnfolderBase]: For 4510/4510 co-relation queries the response was YES. [2024-06-27 18:22:53,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58301 conditions, 27356 events. 18315/27356 cut-off events. For 4510/4510 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 194176 event pairs, 13427 based on Foata normal form. 4/25818 useless extension candidates. Maximal degree in co-relation 58289. Up to 24360 conditions per place. [2024-06-27 18:22:53,743 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 65 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-06-27 18:22:53,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 91 transitions, 398 flow [2024-06-27 18:22:53,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:22:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:22:53,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-06-27 18:22:53,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6724137931034483 [2024-06-27 18:22:53,752 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 4 states and 156 transitions. [2024-06-27 18:22:53,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 91 transitions, 398 flow [2024-06-27 18:22:53,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 91 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:22:53,756 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 218 flow [2024-06-27 18:22:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=218, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-06-27 18:22:53,758 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 18:22:53,760 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 218 flow [2024-06-27 18:22:53,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:53,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:53,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:53,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:22:53,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:53,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:53,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1894779128, now seen corresponding path program 1 times [2024-06-27 18:22:53,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:53,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787451608] [2024-06-27 18:22:53,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:53,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:54,882 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 18:22:54,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:54,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787451608] [2024-06-27 18:22:54,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787451608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:54,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:54,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:22:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517358850] [2024-06-27 18:22:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:54,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:22:54,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:22:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:22:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 58 [2024-06-27 18:22:54,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:54,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:54,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 58 [2024-06-27 18:22:54,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:57,915 INFO L124 PetriNetUnfolderBase]: 23251/33494 cut-off events. [2024-06-27 18:22:57,915 INFO L125 PetriNetUnfolderBase]: For 14021/14021 co-relation queries the response was YES. [2024-06-27 18:22:57,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79541 conditions, 33494 events. 23251/33494 cut-off events. For 14021/14021 co-relation queries the response was YES. Maximal size of possible extension queue 1203. Compared 223613 event pairs, 11629 based on Foata normal form. 8/31766 useless extension candidates. Maximal degree in co-relation 79527. Up to 30721 conditions per place. [2024-06-27 18:22:58,111 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 91 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-27 18:22:58,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 125 transitions, 618 flow [2024-06-27 18:22:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:22:58,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:22:58,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-06-27 18:22:58,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6408045977011494 [2024-06-27 18:22:58,114 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 218 flow. Second operand 6 states and 223 transitions. [2024-06-27 18:22:58,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 125 transitions, 618 flow [2024-06-27 18:22:58,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 125 transitions, 582 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:22:58,121 INFO L231 Difference]: Finished difference. Result has 72 places, 71 transitions, 297 flow [2024-06-27 18:22:58,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=72, PETRI_TRANSITIONS=71} [2024-06-27 18:22:58,123 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 6 predicate places. [2024-06-27 18:22:58,123 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 71 transitions, 297 flow [2024-06-27 18:22:58,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:58,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:58,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:58,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:22:58,125 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:22:58,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:58,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1347074576, now seen corresponding path program 1 times [2024-06-27 18:22:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:58,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997910471] [2024-06-27 18:22:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:58,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:58,907 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 18:22:58,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:58,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997910471] [2024-06-27 18:22:58,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997910471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:58,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:58,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:22:58,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046018733] [2024-06-27 18:22:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:22:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:22:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:22:59,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:22:59,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:59,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:59,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:22:59,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:02,236 INFO L124 PetriNetUnfolderBase]: 23241/32083 cut-off events. [2024-06-27 18:23:02,237 INFO L125 PetriNetUnfolderBase]: For 24588/24588 co-relation queries the response was YES. [2024-06-27 18:23:02,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85829 conditions, 32083 events. 23241/32083 cut-off events. For 24588/24588 co-relation queries the response was YES. Maximal size of possible extension queue 1121. Compared 197603 event pairs, 10984 based on Foata normal form. 3/30938 useless extension candidates. Maximal degree in co-relation 85812. Up to 30798 conditions per place. [2024-06-27 18:23:02,411 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 78 selfloop transitions, 12 changer transitions 0/103 dead transitions. [2024-06-27 18:23:02,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 103 transitions, 571 flow [2024-06-27 18:23:02,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:23:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:23:02,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-06-27 18:23:02,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655172413793104 [2024-06-27 18:23:02,415 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 297 flow. Second operand 5 states and 164 transitions. [2024-06-27 18:23:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 103 transitions, 571 flow [2024-06-27 18:23:02,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 103 transitions, 522 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:02,429 INFO L231 Difference]: Finished difference. Result has 74 places, 76 transitions, 324 flow [2024-06-27 18:23:02,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=324, PETRI_PLACES=74, PETRI_TRANSITIONS=76} [2024-06-27 18:23:02,431 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-27 18:23:02,431 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 76 transitions, 324 flow [2024-06-27 18:23:02,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:02,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:02,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:02,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:23:02,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:02,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1190360024, now seen corresponding path program 1 times [2024-06-27 18:23:02,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:02,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371184256] [2024-06-27 18:23:02,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:02,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:03,404 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 18:23:03,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:03,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371184256] [2024-06-27 18:23:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371184256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941399879] [2024-06-27 18:23:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:03,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 58 [2024-06-27 18:23:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 76 transitions, 324 flow. Second operand has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:03,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 58 [2024-06-27 18:23:03,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:06,791 INFO L124 PetriNetUnfolderBase]: 23329/32351 cut-off events. [2024-06-27 18:23:06,791 INFO L125 PetriNetUnfolderBase]: For 37412/37412 co-relation queries the response was YES. [2024-06-27 18:23:06,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93489 conditions, 32351 events. 23329/32351 cut-off events. For 37412/37412 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 200206 event pairs, 10431 based on Foata normal form. 7/31316 useless extension candidates. Maximal degree in co-relation 93470. Up to 30672 conditions per place. [2024-06-27 18:23:06,984 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 99 selfloop transitions, 27 changer transitions 0/139 dead transitions. [2024-06-27 18:23:06,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 139 transitions, 824 flow [2024-06-27 18:23:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:06,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 209 transitions. [2024-06-27 18:23:06,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6005747126436781 [2024-06-27 18:23:06,986 INFO L175 Difference]: Start difference. First operand has 74 places, 76 transitions, 324 flow. Second operand 6 states and 209 transitions. [2024-06-27 18:23:06,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 139 transitions, 824 flow [2024-06-27 18:23:06,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 786 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:23:06,998 INFO L231 Difference]: Finished difference. Result has 79 places, 93 transitions, 503 flow [2024-06-27 18:23:06,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=503, PETRI_PLACES=79, PETRI_TRANSITIONS=93} [2024-06-27 18:23:06,999 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 13 predicate places. [2024-06-27 18:23:06,999 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 93 transitions, 503 flow [2024-06-27 18:23:07,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:07,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:07,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:23:07,000 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:07,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:07,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1471017095, now seen corresponding path program 1 times [2024-06-27 18:23:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:07,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779826772] [2024-06-27 18:23:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:07,915 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 18:23:07,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:07,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779826772] [2024-06-27 18:23:07,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779826772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:07,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:07,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:07,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779492059] [2024-06-27 18:23:07,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:07,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:07,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:07,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:07,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:07,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 93 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 18:23:07,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:07,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:07,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:11,899 INFO L124 PetriNetUnfolderBase]: 26653/35702 cut-off events. [2024-06-27 18:23:11,899 INFO L125 PetriNetUnfolderBase]: For 71498/71508 co-relation queries the response was YES. [2024-06-27 18:23:11,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117847 conditions, 35702 events. 26653/35702 cut-off events. For 71498/71508 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 209115 event pairs, 11759 based on Foata normal form. 11/34683 useless extension candidates. Maximal degree in co-relation 117825. Up to 35160 conditions per place. [2024-06-27 18:23:12,134 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 110 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-27 18:23:12,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 148 transitions, 1003 flow [2024-06-27 18:23:12,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:12,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:12,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 201 transitions. [2024-06-27 18:23:12,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5775862068965517 [2024-06-27 18:23:12,136 INFO L175 Difference]: Start difference. First operand has 79 places, 93 transitions, 503 flow. Second operand 6 states and 201 transitions. [2024-06-27 18:23:12,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 148 transitions, 1003 flow [2024-06-27 18:23:12,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 148 transitions, 973 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-06-27 18:23:12,160 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 639 flow [2024-06-27 18:23:12,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2024-06-27 18:23:12,161 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-06-27 18:23:12,161 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 639 flow [2024-06-27 18:23:12,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 18:23:12,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:12,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:23:12,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1482359151, now seen corresponding path program 2 times [2024-06-27 18:23:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053092291] [2024-06-27 18:23:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:13,187 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 18:23:13,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053092291] [2024-06-27 18:23:13,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053092291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:13,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:13,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:23:13,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719282215] [2024-06-27 18:23:13,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:13,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:23:13,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:13,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:23:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:23:13,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:13,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 639 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 18:23:13,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:13,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:13,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:16,859 INFO L124 PetriNetUnfolderBase]: 26643/35690 cut-off events. [2024-06-27 18:23:16,859 INFO L125 PetriNetUnfolderBase]: For 94207/94215 co-relation queries the response was YES. [2024-06-27 18:23:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125634 conditions, 35690 events. 26643/35690 cut-off events. For 94207/94215 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 208723 event pairs, 11762 based on Foata normal form. 9/34669 useless extension candidates. Maximal degree in co-relation 125609. Up to 35150 conditions per place. [2024-06-27 18:23:17,053 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 104 selfloop transitions, 26 changer transitions 0/142 dead transitions. [2024-06-27 18:23:17,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 142 transitions, 991 flow [2024-06-27 18:23:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:23:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:23:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 195 transitions. [2024-06-27 18:23:17,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5603448275862069 [2024-06-27 18:23:17,055 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 639 flow. Second operand 6 states and 195 transitions. [2024-06-27 18:23:17,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 142 transitions, 991 flow [2024-06-27 18:23:17,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 142 transitions, 913 flow, removed 33 selfloop flow, removed 2 redundant places. [2024-06-27 18:23:17,119 INFO L231 Difference]: Finished difference. Result has 88 places, 103 transitions, 625 flow [2024-06-27 18:23:17,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=561, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=88, PETRI_TRANSITIONS=103} [2024-06-27 18:23:17,120 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-06-27 18:23:17,120 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 103 transitions, 625 flow [2024-06-27 18:23:17,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 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 18:23:17,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:17,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:17,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:23:17,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:17,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:17,122 INFO L85 PathProgramCache]: Analyzing trace with hash 910739277, now seen corresponding path program 1 times [2024-06-27 18:23:17,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:17,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850233987] [2024-06-27 18:23:17,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:17,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:17,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:18,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:18,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:18,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850233987] [2024-06-27 18:23:18,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850233987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:18,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:18,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:18,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372905311] [2024-06-27 18:23:18,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:18,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:18,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:18,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:18,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:18,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:18,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 103 transitions, 625 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 18:23:18,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:18,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:18,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:22,094 INFO L124 PetriNetUnfolderBase]: 26842/35966 cut-off events. [2024-06-27 18:23:22,094 INFO L125 PetriNetUnfolderBase]: For 98883/98887 co-relation queries the response was YES. [2024-06-27 18:23:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126165 conditions, 35966 events. 26842/35966 cut-off events. For 98883/98887 co-relation queries the response was YES. Maximal size of possible extension queue 1201. Compared 210075 event pairs, 11747 based on Foata normal form. 7/34916 useless extension candidates. Maximal degree in co-relation 126138. Up to 35370 conditions per place. [2024-06-27 18:23:22,327 INFO L140 encePairwiseOnDemand]: 41/58 looper letters, 139 selfloop transitions, 40 changer transitions 0/191 dead transitions. [2024-06-27 18:23:22,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 191 transitions, 1291 flow [2024-06-27 18:23:22,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:23:22,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:23:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 266 transitions. [2024-06-27 18:23:22,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732758620689655 [2024-06-27 18:23:22,329 INFO L175 Difference]: Start difference. First operand has 88 places, 103 transitions, 625 flow. Second operand 8 states and 266 transitions. [2024-06-27 18:23:22,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 191 transitions, 1291 flow [2024-06-27 18:23:22,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 191 transitions, 1199 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:23:22,385 INFO L231 Difference]: Finished difference. Result has 92 places, 127 transitions, 825 flow [2024-06-27 18:23:22,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=825, PETRI_PLACES=92, PETRI_TRANSITIONS=127} [2024-06-27 18:23:22,386 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2024-06-27 18:23:22,386 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 127 transitions, 825 flow [2024-06-27 18:23:22,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 18:23:22,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:22,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:22,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:23:22,387 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:23:22,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:22,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1652144499, now seen corresponding path program 2 times [2024-06-27 18:23:22,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:22,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229994374] [2024-06-27 18:23:22,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:22,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:23,593 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 18:23:23,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:23,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229994374] [2024-06-27 18:23:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229994374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:23,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:23:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375360708] [2024-06-27 18:23:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:23:23,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:23:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:23:23,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:23:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 127 transitions, 825 flow. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 8 states have internal predecessors, (139), 0 states have call successors, (0), 0 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 18:23:23,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:23,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:23:23,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand