./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix043.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/mix043.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix043.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 18:33:46,163 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:33:46,221 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:33:46,228 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:33:46,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:33:46,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:33:46,257 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:33:46,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:33:46,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:33:46,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:33:46,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:33:46,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:33:46,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:33:46,267 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:33:46,267 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:33:46,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:33:46,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:33:46,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:33:46,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:33:46,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:33:46,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:33:46,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:33:46,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:33:46,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:33:46,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:33:46,270 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:33:46,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:33:46,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:33:46,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:33:46,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:33:46,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:33:46,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:33:46,273 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:46,274 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:33:46,274 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:33:46,274 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:33:46,274 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:33:46,275 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:33:46,275 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:33:46,275 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:33:46,275 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:33:46,276 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:33:46,276 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:33:46,276 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:33:46,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:33:46,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:33:46,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:33:46,558 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:33:46,561 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:33:46,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix043.opt.yml/witness.yml [2024-06-27 18:33:46,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:33:46,781 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:33:46,781 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-27 18:33:48,072 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:33:48,305 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:33:48,306 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix043.opt.i [2024-06-27 18:33:48,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cdbcaed/a985de593d2347559302a55d695d897c/FLAG95575b1be [2024-06-27 18:33:48,336 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0cdbcaed/a985de593d2347559302a55d695d897c [2024-06-27 18:33:48,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:33:48,338 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:33:48,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:48,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:33:48,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:33:48,344 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:46" (1/2) ... [2024-06-27 18:33:48,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7118aa1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:48, skipping insertion in model container [2024-06-27 18:33:48,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:46" (1/2) ... [2024-06-27 18:33:48,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f98caad and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:48, skipping insertion in model container [2024-06-27 18:33:48,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:48" (2/2) ... [2024-06-27 18:33:48,346 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7118aa1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:48, skipping insertion in model container [2024-06-27 18:33:48,346 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:48" (2/2) ... [2024-06-27 18:33:48,347 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:33:48,447 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:33:48,448 INFO L97 edCorrectnessWitness]: Location invariant before [L855-L855] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:33:48,448 INFO L97 edCorrectnessWitness]: Location invariant before [L856-L856] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:33:48,449 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:33:48,449 INFO L97 edCorrectnessWitness]: Location invariant before [L853-L853] (((((((((((((((((((((((! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 2)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 2))) && (! multithreaded || ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (b == 0 || b == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0) [2024-06-27 18:33:48,449 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:33:48,449 INFO L106 edCorrectnessWitness]: ghost_update [L849-L849] multithreaded = 1; [2024-06-27 18:33:48,489 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:33:48,690 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/mix043.opt.i[944,957] [2024-06-27 18:33:48,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:48,866 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:33:48,902 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/mix043.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:33:49,018 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:49,057 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:33:49,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49 WrapperNode [2024-06-27 18:33:49,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:49,059 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:49,059 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:33:49,059 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:33:49,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,082 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,117 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 161 [2024-06-27 18:33:49,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:49,119 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:33:49,119 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:33:49,119 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:33:49,135 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,135 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,159 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 18:33:49,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,180 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,182 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,184 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,192 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,195 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:33:49,196 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:33:49,196 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:33:49,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:33:49,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (1/1) ... [2024-06-27 18:33:49,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:33:49,218 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 18:33:49,223 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 18:33:49,273 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:33:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:33:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:33:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:33:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:33:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:33:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:33:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:33:49,275 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:33:49,275 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:33:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:33:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:33:49,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:33:49,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:33:49,279 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 18:33:49,427 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:33:49,429 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:33:49,819 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:33:49,823 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:33:49,964 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:33:49,964 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:33:49,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:49 BoogieIcfgContainer [2024-06-27 18:33:49,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:33:49,968 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:33:49,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:33:49,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:33:49,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:46" (1/4) ... [2024-06-27 18:33:49,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d56db32 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:33:49, skipping insertion in model container [2024-06-27 18:33:49,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:33:48" (2/4) ... [2024-06-27 18:33:49,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d56db32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:49, skipping insertion in model container [2024-06-27 18:33:49,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:49" (3/4) ... [2024-06-27 18:33:49,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d56db32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:49, skipping insertion in model container [2024-06-27 18:33:49,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:49" (4/4) ... [2024-06-27 18:33:49,979 INFO L112 eAbstractionObserver]: Analyzing ICFG mix043.opt.i [2024-06-27 18:33:49,996 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:33:49,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:33:49,997 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:33:50,061 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:33:50,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:33:50,140 INFO L124 PetriNetUnfolderBase]: 1/55 cut-off events. [2024-06-27 18:33:50,140 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:50,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 1/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2024-06-27 18:33:50,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 59 transitions, 134 flow [2024-06-27 18:33:50,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 55 transitions, 122 flow [2024-06-27 18:33:50,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:33:50,170 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;@6e7fb739, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:33:50,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:33:50,175 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:33:50,176 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-27 18:33:50,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:50,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:50,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:33:50,178 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 18:33:50,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash 371432573, now seen corresponding path program 1 times [2024-06-27 18:33:50,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:50,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056550454] [2024-06-27 18:33:50,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:50,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:51,362 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 18:33:51,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:51,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056550454] [2024-06-27 18:33:51,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056550454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:51,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:51,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:33:51,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514448355] [2024-06-27 18:33:51,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:51,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:33:51,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:33:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:33:51,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 59 [2024-06-27 18:33:51,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 122 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 18:33:51,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:51,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 59 [2024-06-27 18:33:51,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:54,062 INFO L124 PetriNetUnfolderBase]: 17474/25862 cut-off events. [2024-06-27 18:33:54,062 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-06-27 18:33:54,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49413 conditions, 25862 events. 17474/25862 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 180201 event pairs, 14603 based on Foata normal form. 673/24821 useless extension candidates. Maximal degree in co-relation 49400. Up to 23295 conditions per place. [2024-06-27 18:33:54,258 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 52 selfloop transitions, 6 changer transitions 0/74 dead transitions. [2024-06-27 18:33:54,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 285 flow [2024-06-27 18:33:54,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:33:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:33:54,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-06-27 18:33:54,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7005649717514124 [2024-06-27 18:33:54,269 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 122 flow. Second operand 3 states and 124 transitions. [2024-06-27 18:33:54,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 285 flow [2024-06-27 18:33:54,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:54,277 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 162 flow [2024-06-27 18:33:54,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-27 18:33:54,282 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -1 predicate places. [2024-06-27 18:33:54,282 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 162 flow [2024-06-27 18:33:54,282 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 18:33:54,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:54,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:54,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:33:54,283 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 18:33:54,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:54,283 INFO L85 PathProgramCache]: Analyzing trace with hash 464907998, now seen corresponding path program 1 times [2024-06-27 18:33:54,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:54,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602164447] [2024-06-27 18:33:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:54,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:55,008 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 18:33:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:55,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602164447] [2024-06-27 18:33:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602164447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:33:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356767363] [2024-06-27 18:33:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:33:55,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:33:55,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:33:55,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 59 [2024-06-27 18:33:55,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 162 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 18:33:55,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:55,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 59 [2024-06-27 18:33:55,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:57,597 INFO L124 PetriNetUnfolderBase]: 19927/29140 cut-off events. [2024-06-27 18:33:57,597 INFO L125 PetriNetUnfolderBase]: For 4993/4993 co-relation queries the response was YES. [2024-06-27 18:33:57,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62742 conditions, 29140 events. 19927/29140 cut-off events. For 4993/4993 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 201201 event pairs, 14603 based on Foata normal form. 4/27501 useless extension candidates. Maximal degree in co-relation 62730. Up to 26481 conditions per place. [2024-06-27 18:33:57,777 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 68 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-06-27 18:33:57,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 94 transitions, 410 flow [2024-06-27 18:33:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:33:57,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:33:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 159 transitions. [2024-06-27 18:33:57,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.673728813559322 [2024-06-27 18:33:57,780 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 162 flow. Second operand 4 states and 159 transitions. [2024-06-27 18:33:57,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 94 transitions, 410 flow [2024-06-27 18:33:57,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 94 transitions, 404 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:33:57,784 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 220 flow [2024-06-27 18:33:57,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2024-06-27 18:33:57,785 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2024-06-27 18:33:57,786 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 220 flow [2024-06-27 18:33:57,786 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 18:33:57,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:57,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:57,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:33:57,787 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 18:33:57,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:57,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1193485375, now seen corresponding path program 1 times [2024-06-27 18:33:57,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:57,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817868797] [2024-06-27 18:33:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:57,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:58,707 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 18:33:58,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817868797] [2024-06-27 18:33:58,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817868797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:58,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:58,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:33:58,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275617727] [2024-06-27 18:33:58,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:58,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:33:58,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:58,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:33:58,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:33:58,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-06-27 18:33:58,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 220 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 18:33:58,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:58,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-06-27 18:33:58,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:01,761 INFO L124 PetriNetUnfolderBase]: 25298/36762 cut-off events. [2024-06-27 18:34:01,762 INFO L125 PetriNetUnfolderBase]: For 16543/16543 co-relation queries the response was YES. [2024-06-27 18:34:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86782 conditions, 36762 events. 25298/36762 cut-off events. For 16543/16543 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 254732 event pairs, 14933 based on Foata normal form. 8/34720 useless extension candidates. Maximal degree in co-relation 86768. Up to 33399 conditions per place. [2024-06-27 18:34:01,958 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 96 selfloop transitions, 20 changer transitions 0/130 dead transitions. [2024-06-27 18:34:01,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 130 transitions, 638 flow [2024-06-27 18:34:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:34:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:34:01,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 228 transitions. [2024-06-27 18:34:01,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6440677966101694 [2024-06-27 18:34:01,964 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 220 flow. Second operand 6 states and 228 transitions. [2024-06-27 18:34:01,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 130 transitions, 638 flow [2024-06-27 18:34:01,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 130 transitions, 602 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 18:34:01,970 INFO L231 Difference]: Finished difference. Result has 73 places, 72 transitions, 299 flow [2024-06-27 18:34:01,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=299, PETRI_PLACES=73, PETRI_TRANSITIONS=72} [2024-06-27 18:34:01,972 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2024-06-27 18:34:01,972 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 72 transitions, 299 flow [2024-06-27 18:34:01,972 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 18:34:01,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:01,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:01,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:34:01,973 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 18:34:01,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1783587145, now seen corresponding path program 1 times [2024-06-27 18:34:01,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746482875] [2024-06-27 18:34:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:01,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:01,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:02,686 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 18:34:02,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:02,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746482875] [2024-06-27 18:34:02,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746482875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:02,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:02,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:34:02,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416440438] [2024-06-27 18:34:02,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:02,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:34:02,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:02,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:34:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:34:02,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-06-27 18:34:02,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 72 transitions, 299 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 18:34:02,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:02,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-06-27 18:34:02,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:06,103 INFO L124 PetriNetUnfolderBase]: 24882/35086 cut-off events. [2024-06-27 18:34:06,103 INFO L125 PetriNetUnfolderBase]: For 27071/27071 co-relation queries the response was YES. [2024-06-27 18:34:06,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92684 conditions, 35086 events. 24882/35086 cut-off events. For 27071/27071 co-relation queries the response was YES. Maximal size of possible extension queue 1321. Compared 230545 event pairs, 11035 based on Foata normal form. 3/33881 useless extension candidates. Maximal degree in co-relation 92667. Up to 32956 conditions per place. [2024-06-27 18:34:06,515 INFO L140 encePairwiseOnDemand]: 48/59 looper letters, 81 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-27 18:34:06,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 106 transitions, 583 flow [2024-06-27 18:34:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:34:06,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:34:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 167 transitions. [2024-06-27 18:34:06,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661016949152542 [2024-06-27 18:34:06,517 INFO L175 Difference]: Start difference. First operand has 73 places, 72 transitions, 299 flow. Second operand 5 states and 167 transitions. [2024-06-27 18:34:06,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 106 transitions, 583 flow [2024-06-27 18:34:06,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 106 transitions, 534 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:34:06,528 INFO L231 Difference]: Finished difference. Result has 75 places, 77 transitions, 326 flow [2024-06-27 18:34:06,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=326, PETRI_PLACES=75, PETRI_TRANSITIONS=77} [2024-06-27 18:34:06,530 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2024-06-27 18:34:06,530 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 77 transitions, 326 flow [2024-06-27 18:34:06,530 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 18:34:06,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:06,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:06,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:34:06,531 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 18:34:06,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:06,531 INFO L85 PathProgramCache]: Analyzing trace with hash 939281076, now seen corresponding path program 1 times [2024-06-27 18:34:06,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:06,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894272949] [2024-06-27 18:34:06,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:06,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:06,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:07,272 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 18:34:07,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894272949] [2024-06-27 18:34:07,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894272949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:07,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:07,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:34:07,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119593736] [2024-06-27 18:34:07,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:34:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:07,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:34:07,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:34:07,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:34:07,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 326 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 18:34:07,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:07,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:34:07,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:11,544 INFO L124 PetriNetUnfolderBase]: 28470/38788 cut-off events. [2024-06-27 18:34:11,545 INFO L125 PetriNetUnfolderBase]: For 45579/45601 co-relation queries the response was YES. [2024-06-27 18:34:11,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112015 conditions, 38788 events. 28470/38788 cut-off events. For 45579/45601 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 241953 event pairs, 12275 based on Foata normal form. 5/37577 useless extension candidates. Maximal degree in co-relation 111996. Up to 37548 conditions per place. [2024-06-27 18:34:11,772 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 97 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-27 18:34:11,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 784 flow [2024-06-27 18:34:11,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:34:11,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:34:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2024-06-27 18:34:11,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5790960451977402 [2024-06-27 18:34:11,774 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 326 flow. Second operand 6 states and 205 transitions. [2024-06-27 18:34:11,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 784 flow [2024-06-27 18:34:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 135 transitions, 746 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:34:11,783 INFO L231 Difference]: Finished difference. Result has 78 places, 87 transitions, 438 flow [2024-06-27 18:34:11,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=438, PETRI_PLACES=78, PETRI_TRANSITIONS=87} [2024-06-27 18:34:11,783 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2024-06-27 18:34:11,784 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 87 transitions, 438 flow [2024-06-27 18:34:11,784 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 18:34:11,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:11,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:11,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:34:11,784 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 18:34:11,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:11,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1308598794, now seen corresponding path program 2 times [2024-06-27 18:34:11,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:11,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090934229] [2024-06-27 18:34:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:11,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090934229] [2024-06-27 18:34:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090934229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:12,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:12,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:34:12,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118407991] [2024-06-27 18:34:12,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:12,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:34:12,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:12,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:34:12,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:34:12,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:34:12,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 87 transitions, 438 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 18:34:12,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:12,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:34:12,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:16,163 INFO L124 PetriNetUnfolderBase]: 28460/38802 cut-off events. [2024-06-27 18:34:16,163 INFO L125 PetriNetUnfolderBase]: For 65378/65431 co-relation queries the response was YES. [2024-06-27 18:34:16,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120725 conditions, 38802 events. 28460/38802 cut-off events. For 65378/65431 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 242583 event pairs, 12278 based on Foata normal form. 37/37625 useless extension candidates. Maximal degree in co-relation 120705. Up to 37538 conditions per place. [2024-06-27 18:34:16,388 INFO L140 encePairwiseOnDemand]: 47/59 looper letters, 91 selfloop transitions, 26 changer transitions 0/129 dead transitions. [2024-06-27 18:34:16,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 129 transitions, 770 flow [2024-06-27 18:34:16,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:34:16,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:34:16,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-06-27 18:34:16,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621468926553672 [2024-06-27 18:34:16,390 INFO L175 Difference]: Start difference. First operand has 78 places, 87 transitions, 438 flow. Second operand 6 states and 199 transitions. [2024-06-27 18:34:16,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 129 transitions, 770 flow [2024-06-27 18:34:16,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 129 transitions, 708 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:34:16,434 INFO L231 Difference]: Finished difference. Result has 82 places, 87 transitions, 440 flow [2024-06-27 18:34:16,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=440, PETRI_PLACES=82, PETRI_TRANSITIONS=87} [2024-06-27 18:34:16,437 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2024-06-27 18:34:16,437 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 87 transitions, 440 flow [2024-06-27 18:34:16,437 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 18:34:16,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:16,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:16,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:34:16,438 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 18:34:16,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2145886450, now seen corresponding path program 1 times [2024-06-27 18:34:16,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:16,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194608360] [2024-06-27 18:34:16,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:16,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:17,399 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 18:34:17,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194608360] [2024-06-27 18:34:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194608360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:17,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:34:17,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539943364] [2024-06-27 18:34:17,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:17,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:34:17,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:34:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:34:17,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:34:17,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 87 transitions, 440 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 18:34:17,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:17,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:34:17,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:21,386 INFO L124 PetriNetUnfolderBase]: 28679/39130 cut-off events. [2024-06-27 18:34:21,386 INFO L125 PetriNetUnfolderBase]: For 68473/68523 co-relation queries the response was YES. [2024-06-27 18:34:21,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121259 conditions, 39130 events. 28679/39130 cut-off events. For 68473/68523 co-relation queries the response was YES. Maximal size of possible extension queue 1436. Compared 244337 event pairs, 12262 based on Foata normal form. 7/37891 useless extension candidates. Maximal degree in co-relation 121237. Up to 37780 conditions per place. [2024-06-27 18:34:21,664 INFO L140 encePairwiseOnDemand]: 42/59 looper letters, 128 selfloop transitions, 40 changer transitions 0/180 dead transitions. [2024-06-27 18:34:21,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 180 transitions, 1086 flow [2024-06-27 18:34:21,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:21,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 272 transitions. [2024-06-27 18:34:21,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.576271186440678 [2024-06-27 18:34:21,666 INFO L175 Difference]: Start difference. First operand has 82 places, 87 transitions, 440 flow. Second operand 8 states and 272 transitions. [2024-06-27 18:34:21,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 180 transitions, 1086 flow [2024-06-27 18:34:21,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 180 transitions, 994 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:21,705 INFO L231 Difference]: Finished difference. Result has 86 places, 111 transitions, 632 flow [2024-06-27 18:34:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=632, PETRI_PLACES=86, PETRI_TRANSITIONS=111} [2024-06-27 18:34:21,707 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2024-06-27 18:34:21,708 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 111 transitions, 632 flow [2024-06-27 18:34:21,708 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 18:34:21,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:21,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:21,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:34:21,708 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 18:34:21,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1628061830, now seen corresponding path program 2 times [2024-06-27 18:34:21,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:21,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880613046] [2024-06-27 18:34:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:21,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:22,908 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 18:34:22,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:22,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880613046] [2024-06-27 18:34:22,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880613046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:22,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:22,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:34:22,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943313487] [2024-06-27 18:34:22,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:22,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:34:22,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:34:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:34:23,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:34:23,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 111 transitions, 632 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 18:34:23,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:23,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:34:23,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:27,046 INFO L124 PetriNetUnfolderBase]: 28733/39212 cut-off events. [2024-06-27 18:34:27,047 INFO L125 PetriNetUnfolderBase]: For 96169/96257 co-relation queries the response was YES. [2024-06-27 18:34:27,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131580 conditions, 39212 events. 28733/39212 cut-off events. For 96169/96257 co-relation queries the response was YES. Maximal size of possible extension queue 1437. Compared 244756 event pairs, 12259 based on Foata normal form. 11/37972 useless extension candidates. Maximal degree in co-relation 131556. Up to 37807 conditions per place. [2024-06-27 18:34:27,295 INFO L140 encePairwiseOnDemand]: 46/59 looper letters, 125 selfloop transitions, 42 changer transitions 0/179 dead transitions. [2024-06-27 18:34:27,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 179 transitions, 1212 flow [2024-06-27 18:34:27,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:34:27,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:34:27,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-06-27 18:34:27,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5738498789346247 [2024-06-27 18:34:27,313 INFO L175 Difference]: Start difference. First operand has 86 places, 111 transitions, 632 flow. Second operand 7 states and 237 transitions. [2024-06-27 18:34:27,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 179 transitions, 1212 flow [2024-06-27 18:34:27,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 179 transitions, 1136 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:34:27,367 INFO L231 Difference]: Finished difference. Result has 90 places, 116 transitions, 725 flow [2024-06-27 18:34:27,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=725, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2024-06-27 18:34:27,370 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 23 predicate places. [2024-06-27 18:34:27,370 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 725 flow [2024-06-27 18:34:27,370 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 18:34:27,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:27,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:27,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:34:27,371 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 18:34:27,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:27,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1628066480, now seen corresponding path program 3 times [2024-06-27 18:34:27,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:27,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708421056] [2024-06-27 18:34:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:28,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:34:28,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:28,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708421056] [2024-06-27 18:34:28,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708421056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:28,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:28,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:34:28,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882520456] [2024-06-27 18:34:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:28,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:34:28,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:28,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:34:28,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:34:28,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 59 [2024-06-27 18:34:28,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 725 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 18:34:28,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:28,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 59 [2024-06-27 18:34:28,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand