./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix053.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/mix053.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix053.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 18:37:57,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:37:57,898 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:37:57,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:37:57,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:37:57,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:37:57,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:37:57,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:37:57,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:37:57,931 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:37:57,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:37:57,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:37:57,932 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:37:57,933 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:37:57,933 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:37:57,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:37:57,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:37:57,934 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:37:57,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:37:57,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:37:57,934 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:37:57,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:37:57,935 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:37:57,935 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:37:57,935 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:37:57,935 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:37:57,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:37:57,936 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:37:57,936 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:37:57,937 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:37:57,937 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:37:57,938 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:37:57,938 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:37:57,938 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:37:57,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:37:57,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:37:57,938 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:37:57,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:37:57,939 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:37:57,939 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:37:57,939 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:37:57,939 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:37:57,940 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:37:57,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:37:58,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:37:58,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:37:58,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:37:58,208 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:37:58,209 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:37:58,210 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix053.opt.yml/witness.yml [2024-06-27 18:37:58,532 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:37:58,533 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:37:58,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-06-27 18:37:59,626 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:37:59,860 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:37:59,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix053.opt.i [2024-06-27 18:37:59,882 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56070b711/a7a6b3ca3e5045279f6eea0c5d5ad829/FLAG1696a0152 [2024-06-27 18:37:59,895 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56070b711/a7a6b3ca3e5045279f6eea0c5d5ad829 [2024-06-27 18:37:59,895 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:37:59,896 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:37:59,898 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:37:59,898 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:37:59,902 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:37:59,903 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:58" (1/2) ... [2024-06-27 18:37:59,904 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642a5c9f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:59, skipping insertion in model container [2024-06-27 18:37:59,904 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:58" (1/2) ... [2024-06-27 18:37:59,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@744dbfe6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:37:59, skipping insertion in model container [2024-06-27 18:37:59,905 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:59" (2/2) ... [2024-06-27 18:37:59,906 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642a5c9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:37:59, skipping insertion in model container [2024-06-27 18:37:59,906 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:37:59" (2/2) ... [2024-06-27 18:37:59,906 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:38:00,062 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:38:00,062 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 18:38:00,063 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 18:38:00,063 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 18:38:00,063 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((((! multithreaded || z$flush_delayed == (_Bool)0) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1))) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0) [2024-06-27 18:38:00,063 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:38:00,063 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-27 18:38:00,096 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:38:00,245 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/mix053.opt.i[944,957] [2024-06-27 18:38:00,426 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:38:00,433 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:38:00,461 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/mix053.opt.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:38:00,544 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:38:00,575 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:38:00,580 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00 WrapperNode [2024-06-27 18:38:00,580 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:38:00,581 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:38:00,581 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:38:00,581 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:38:00,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,599 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,624 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:38:00,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:38:00,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:38:00,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:38:00,625 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:38:00,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,645 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,660 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 18:38:00,665 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,665 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,693 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:38:00,702 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:38:00,702 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:38:00,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:38:00,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (1/1) ... [2024-06-27 18:38:00,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:38:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:38:00,731 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 18:38:00,749 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 18:38:00,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:38:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:38:00,763 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:38:00,763 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:38:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:38:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:38:00,764 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:38:00,764 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:38:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:38:00,765 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:38:00,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:38:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:38:00,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:38:00,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:38:00,769 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 18:38:00,901 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:38:00,903 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:38:01,212 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:38:01,212 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:38:01,334 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:38:01,334 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:38:01,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:38:01 BoogieIcfgContainer [2024-06-27 18:38:01,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:38:01,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:38:01,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:38:01,339 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:38:01,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:37:58" (1/4) ... [2024-06-27 18:38:01,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58340c47 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:38:01, skipping insertion in model container [2024-06-27 18:38:01,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:37:59" (2/4) ... [2024-06-27 18:38:01,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58340c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:38:01, skipping insertion in model container [2024-06-27 18:38:01,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:38:00" (3/4) ... [2024-06-27 18:38:01,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58340c47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:38:01, skipping insertion in model container [2024-06-27 18:38:01,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:38:01" (4/4) ... [2024-06-27 18:38:01,342 INFO L112 eAbstractionObserver]: Analyzing ICFG mix053.opt.i [2024-06-27 18:38:01,354 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:38:01,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:38:01,354 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:38:01,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:38:01,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:38:01,467 INFO L124 PetriNetUnfolderBase]: 1/53 cut-off events. [2024-06-27 18:38:01,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:38:01,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 1/53 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2024-06-27 18:38:01,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 57 transitions, 130 flow [2024-06-27 18:38:01,474 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 53 transitions, 118 flow [2024-06-27 18:38:01,489 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:38:01,495 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;@7a6e3bc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:38:01,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:38:01,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:38:01,500 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:38:01,500 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:38:01,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:01,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:38:01,501 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 18:38:01,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:01,552 INFO L85 PathProgramCache]: Analyzing trace with hash 350496509, now seen corresponding path program 1 times [2024-06-27 18:38:01,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:01,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027279849] [2024-06-27 18:38:01,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:01,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:02,520 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 18:38:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:02,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027279849] [2024-06-27 18:38:02,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027279849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:02,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:02,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:38:02,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709758136] [2024-06-27 18:38:02,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:02,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:38:02,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:02,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:38:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:38:02,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 57 [2024-06-27 18:38:02,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:38:02,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:02,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 57 [2024-06-27 18:38:02,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:05,188 INFO L124 PetriNetUnfolderBase]: 17591/26962 cut-off events. [2024-06-27 18:38:05,189 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-06-27 18:38:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50738 conditions, 26962 events. 17591/26962 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 1052. Compared 195566 event pairs, 14957 based on Foata normal form. 751/25891 useless extension candidates. Maximal degree in co-relation 50725. Up to 23443 conditions per place. [2024-06-27 18:38:05,347 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 50 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2024-06-27 18:38:05,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 71 transitions, 275 flow [2024-06-27 18:38:05,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:38:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:38:05,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-06-27 18:38:05,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.695906432748538 [2024-06-27 18:38:05,358 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 118 flow. Second operand 3 states and 119 transitions. [2024-06-27 18:38:05,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 71 transitions, 275 flow [2024-06-27 18:38:05,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 71 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:05,366 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 158 flow [2024-06-27 18:38:05,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-06-27 18:38:05,371 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2024-06-27 18:38:05,371 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 158 flow [2024-06-27 18:38:05,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 18:38:05,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:05,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:05,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:38:05,372 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 18:38:05,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:05,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1819733788, now seen corresponding path program 1 times [2024-06-27 18:38:05,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:05,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349602203] [2024-06-27 18:38:05,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:05,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:05,866 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 18:38:05,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:05,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349602203] [2024-06-27 18:38:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349602203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:38:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686559053] [2024-06-27 18:38:05,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:05,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:38:05,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:05,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:38:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:38:05,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-06-27 18:38:05,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:05,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:05,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-06-27 18:38:05,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:08,155 INFO L124 PetriNetUnfolderBase]: 20430/27479 cut-off events. [2024-06-27 18:38:08,155 INFO L125 PetriNetUnfolderBase]: For 4066/4066 co-relation queries the response was YES. [2024-06-27 18:38:08,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61785 conditions, 27479 events. 20430/27479 cut-off events. For 4066/4066 co-relation queries the response was YES. Maximal size of possible extension queue 1003. Compared 161666 event pairs, 12352 based on Foata normal form. 4/26573 useless extension candidates. Maximal degree in co-relation 61773. Up to 27124 conditions per place. [2024-06-27 18:38:08,324 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 65 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2024-06-27 18:38:08,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 90 transitions, 396 flow [2024-06-27 18:38:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:38:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:38:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2024-06-27 18:38:08,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:38:08,330 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 158 flow. Second operand 4 states and 152 transitions. [2024-06-27 18:38:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 90 transitions, 396 flow [2024-06-27 18:38:08,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:38:08,334 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 216 flow [2024-06-27 18:38:08,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-27 18:38:08,335 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2024-06-27 18:38:08,337 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 216 flow [2024-06-27 18:38:08,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:38:08,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:08,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:08,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:38:08,342 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 18:38:08,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:08,343 INFO L85 PathProgramCache]: Analyzing trace with hash 577173820, now seen corresponding path program 1 times [2024-06-27 18:38:08,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:08,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665975237] [2024-06-27 18:38:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:08,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:08,943 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 18:38:08,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:08,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665975237] [2024-06-27 18:38:08,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665975237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:08,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:08,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:38:08,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083172876] [2024-06-27 18:38:08,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:38:08,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:38:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:38:08,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-06-27 18:38:08,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 18:38:08,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:08,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-06-27 18:38:08,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:11,056 INFO L124 PetriNetUnfolderBase]: 20470/27598 cut-off events. [2024-06-27 18:38:11,056 INFO L125 PetriNetUnfolderBase]: For 11586/11586 co-relation queries the response was YES. [2024-06-27 18:38:11,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68777 conditions, 27598 events. 20470/27598 cut-off events. For 11586/11586 co-relation queries the response was YES. Maximal size of possible extension queue 1004. Compared 162996 event pairs, 9635 based on Foata normal form. 7/26699 useless extension candidates. Maximal degree in co-relation 68763. Up to 27027 conditions per place. [2024-06-27 18:38:11,291 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 87 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-27 18:38:11,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 658 flow [2024-06-27 18:38:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:11,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 199 transitions. [2024-06-27 18:38:11,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6982456140350877 [2024-06-27 18:38:11,293 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 216 flow. Second operand 5 states and 199 transitions. [2024-06-27 18:38:11,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 658 flow [2024-06-27 18:38:11,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 127 transitions, 634 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:11,297 INFO L231 Difference]: Finished difference. Result has 72 places, 79 transitions, 377 flow [2024-06-27 18:38:11,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=72, PETRI_TRANSITIONS=79} [2024-06-27 18:38:11,298 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 7 predicate places. [2024-06-27 18:38:11,298 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 79 transitions, 377 flow [2024-06-27 18:38:11,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 18:38:11,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:11,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:11,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:38:11,299 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:38:11,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:11,300 INFO L85 PathProgramCache]: Analyzing trace with hash 607354079, now seen corresponding path program 1 times [2024-06-27 18:38:11,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:11,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531544846] [2024-06-27 18:38:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:11,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:11,948 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 18:38:11,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:11,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531544846] [2024-06-27 18:38:11,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531544846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:11,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:11,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:38:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063942504] [2024-06-27 18:38:11,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:11,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:38:11,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:11,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:38:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:38:12,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 57 [2024-06-27 18:38:12,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 79 transitions, 377 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 18:38:12,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:12,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 57 [2024-06-27 18:38:12,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:14,564 INFO L124 PetriNetUnfolderBase]: 20539/27727 cut-off events. [2024-06-27 18:38:14,565 INFO L125 PetriNetUnfolderBase]: For 28659/28665 co-relation queries the response was YES. [2024-06-27 18:38:14,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80176 conditions, 27727 events. 20539/27727 cut-off events. For 28659/28665 co-relation queries the response was YES. Maximal size of possible extension queue 1012. Compared 164149 event pairs, 7653 based on Foata normal form. 18/26827 useless extension candidates. Maximal degree in co-relation 80159. Up to 27008 conditions per place. [2024-06-27 18:38:14,908 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 98 selfloop transitions, 31 changer transitions 0/143 dead transitions. [2024-06-27 18:38:14,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 143 transitions, 841 flow [2024-06-27 18:38:14,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:14,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-06-27 18:38:14,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6812865497076024 [2024-06-27 18:38:14,926 INFO L175 Difference]: Start difference. First operand has 72 places, 79 transitions, 377 flow. Second operand 6 states and 233 transitions. [2024-06-27 18:38:14,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 143 transitions, 841 flow [2024-06-27 18:38:14,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 143 transitions, 825 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-06-27 18:38:14,935 INFO L231 Difference]: Finished difference. Result has 77 places, 83 transitions, 473 flow [2024-06-27 18:38:14,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=473, PETRI_PLACES=77, PETRI_TRANSITIONS=83} [2024-06-27 18:38:14,936 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 12 predicate places. [2024-06-27 18:38:14,937 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 83 transitions, 473 flow [2024-06-27 18:38:14,937 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 18:38:14,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:14,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:14,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:38:14,938 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 18:38:14,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:14,938 INFO L85 PathProgramCache]: Analyzing trace with hash -107846491, now seen corresponding path program 1 times [2024-06-27 18:38:14,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:14,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868036529] [2024-06-27 18:38:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:14,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:15,518 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 18:38:15,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:15,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868036529] [2024-06-27 18:38:15,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868036529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:15,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:15,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:38:15,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975886173] [2024-06-27 18:38:15,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:15,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:38:15,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:15,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:38:15,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:38:15,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 18:38:15,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 83 transitions, 473 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 18:38:15,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:15,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 18:38:15,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:18,202 INFO L124 PetriNetUnfolderBase]: 20118/27841 cut-off events. [2024-06-27 18:38:18,202 INFO L125 PetriNetUnfolderBase]: For 40970/40970 co-relation queries the response was YES. [2024-06-27 18:38:18,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86865 conditions, 27841 events. 20118/27841 cut-off events. For 40970/40970 co-relation queries the response was YES. Maximal size of possible extension queue 979. Compared 170582 event pairs, 8707 based on Foata normal form. 3/26805 useless extension candidates. Maximal degree in co-relation 86844. Up to 26723 conditions per place. [2024-06-27 18:38:18,534 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 85 selfloop transitions, 12 changer transitions 0/110 dead transitions. [2024-06-27 18:38:18,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 110 transitions, 731 flow [2024-06-27 18:38:18,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:38:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:38:18,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 163 transitions. [2024-06-27 18:38:18,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5719298245614035 [2024-06-27 18:38:18,539 INFO L175 Difference]: Start difference. First operand has 77 places, 83 transitions, 473 flow. Second operand 5 states and 163 transitions. [2024-06-27 18:38:18,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 110 transitions, 731 flow [2024-06-27 18:38:18,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 110 transitions, 643 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:18,558 INFO L231 Difference]: Finished difference. Result has 78 places, 83 transitions, 421 flow [2024-06-27 18:38:18,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=421, PETRI_PLACES=78, PETRI_TRANSITIONS=83} [2024-06-27 18:38:18,560 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 13 predicate places. [2024-06-27 18:38:18,560 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 83 transitions, 421 flow [2024-06-27 18:38:18,560 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 18:38:18,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:18,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:18,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:38:18,561 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 18:38:18,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash 951496321, now seen corresponding path program 1 times [2024-06-27 18:38:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:18,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839939131] [2024-06-27 18:38:18,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:19,203 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 18:38:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:19,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839939131] [2024-06-27 18:38:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839939131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735791451] [2024-06-27 18:38:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:19,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:19,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:19,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:19,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 57 [2024-06-27 18:38:19,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 83 transitions, 421 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 18:38:19,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:19,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 57 [2024-06-27 18:38:19,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:21,992 INFO L124 PetriNetUnfolderBase]: 20206/28262 cut-off events. [2024-06-27 18:38:21,995 INFO L125 PetriNetUnfolderBase]: For 42882/42882 co-relation queries the response was YES. [2024-06-27 18:38:22,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87636 conditions, 28262 events. 20206/28262 cut-off events. For 42882/42882 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 174322 event pairs, 8318 based on Foata normal form. 7/27212 useless extension candidates. Maximal degree in co-relation 87613. Up to 26597 conditions per place. [2024-06-27 18:38:22,172 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 106 selfloop transitions, 27 changer transitions 0/146 dead transitions. [2024-06-27 18:38:22,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 146 transitions, 947 flow [2024-06-27 18:38:22,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:22,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 208 transitions. [2024-06-27 18:38:22,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081871345029239 [2024-06-27 18:38:22,174 INFO L175 Difference]: Start difference. First operand has 78 places, 83 transitions, 421 flow. Second operand 6 states and 208 transitions. [2024-06-27 18:38:22,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 146 transitions, 947 flow [2024-06-27 18:38:22,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 146 transitions, 911 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:38:22,201 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 606 flow [2024-06-27 18:38:22,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=606, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2024-06-27 18:38:22,204 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 17 predicate places. [2024-06-27 18:38:22,204 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 606 flow [2024-06-27 18:38:22,204 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 18:38:22,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:22,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:22,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:38:22,207 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 18:38:22,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:22,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2042281916, now seen corresponding path program 1 times [2024-06-27 18:38:22,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:22,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568390162] [2024-06-27 18:38:22,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:22,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:23,027 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 18:38:23,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568390162] [2024-06-27 18:38:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568390162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:23,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586255512] [2024-06-27 18:38:23,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:23,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:23,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 18:38:23,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 100 transitions, 606 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 18:38:23,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:23,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 18:38:23,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:26,835 INFO L124 PetriNetUnfolderBase]: 23520/31605 cut-off events. [2024-06-27 18:38:26,836 INFO L125 PetriNetUnfolderBase]: For 78180/78192 co-relation queries the response was YES. [2024-06-27 18:38:26,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111288 conditions, 31605 events. 23520/31605 cut-off events. For 78180/78192 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 183308 event pairs, 9899 based on Foata normal form. 14/30564 useless extension candidates. Maximal degree in co-relation 111263. Up to 30975 conditions per place. [2024-06-27 18:38:27,044 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 107 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-27 18:38:27,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 150 transitions, 1064 flow [2024-06-27 18:38:27,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-06-27 18:38:27,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5906432748538012 [2024-06-27 18:38:27,047 INFO L175 Difference]: Start difference. First operand has 82 places, 100 transitions, 606 flow. Second operand 6 states and 202 transitions. [2024-06-27 18:38:27,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 150 transitions, 1064 flow [2024-06-27 18:38:27,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 150 transitions, 1032 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 18:38:27,144 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 692 flow [2024-06-27 18:38:27,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-27 18:38:27,145 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 22 predicate places. [2024-06-27 18:38:27,145 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 692 flow [2024-06-27 18:38:27,145 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 18:38:27,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:27,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:27,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:38:27,146 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 18:38:27,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:27,146 INFO L85 PathProgramCache]: Analyzing trace with hash -561242300, now seen corresponding path program 2 times [2024-06-27 18:38:27,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:27,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654629110] [2024-06-27 18:38:27,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:27,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:27,805 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 18:38:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654629110] [2024-06-27 18:38:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654629110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:27,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:38:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61034655] [2024-06-27 18:38:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:27,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:38:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:27,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:38:27,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:38:27,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 18:38:27,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 692 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 18:38:27,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:27,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 18:38:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:30,997 INFO L124 PetriNetUnfolderBase]: 23492/31553 cut-off events. [2024-06-27 18:38:30,997 INFO L125 PetriNetUnfolderBase]: For 81477/81481 co-relation queries the response was YES. [2024-06-27 18:38:31,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110893 conditions, 31553 events. 23492/31553 cut-off events. For 81477/81481 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 182916 event pairs, 9929 based on Foata normal form. 4/30498 useless extension candidates. Maximal degree in co-relation 110865. Up to 30941 conditions per place. [2024-06-27 18:38:31,226 INFO L140 encePairwiseOnDemand]: 44/57 looper letters, 100 selfloop transitions, 32 changer transitions 0/144 dead transitions. [2024-06-27 18:38:31,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 144 transitions, 1048 flow [2024-06-27 18:38:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:38:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:38:31,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-06-27 18:38:31,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5760233918128655 [2024-06-27 18:38:31,228 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 692 flow. Second operand 6 states and 197 transitions. [2024-06-27 18:38:31,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 144 transitions, 1048 flow [2024-06-27 18:38:31,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 144 transitions, 991 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 18:38:31,292 INFO L231 Difference]: Finished difference. Result has 90 places, 105 transitions, 711 flow [2024-06-27 18:38:31,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=711, PETRI_PLACES=90, PETRI_TRANSITIONS=105} [2024-06-27 18:38:31,292 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 25 predicate places. [2024-06-27 18:38:31,293 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 105 transitions, 711 flow [2024-06-27 18:38:31,293 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 18:38:31,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:31,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:38:31,293 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 18:38:31,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash -105563646, now seen corresponding path program 1 times [2024-06-27 18:38:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:31,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62324571] [2024-06-27 18:38:31,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:31,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:31,871 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 18:38:31,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:31,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62324571] [2024-06-27 18:38:31,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62324571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:31,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:31,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:31,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246628363] [2024-06-27 18:38:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:31,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:31,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:31,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:31,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 18:38:31,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 105 transitions, 711 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 18:38:31,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:31,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 18:38:31,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:35,482 INFO L124 PetriNetUnfolderBase]: 25300/34049 cut-off events. [2024-06-27 18:38:35,483 INFO L125 PetriNetUnfolderBase]: For 99194/99194 co-relation queries the response was YES. [2024-06-27 18:38:35,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122460 conditions, 34049 events. 25300/34049 cut-off events. For 99194/99194 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 197640 event pairs, 7997 based on Foata normal form. 14/32699 useless extension candidates. Maximal degree in co-relation 122431. Up to 31166 conditions per place. [2024-06-27 18:38:35,751 INFO L140 encePairwiseOnDemand]: 38/57 looper letters, 157 selfloop transitions, 78 changer transitions 0/247 dead transitions. [2024-06-27 18:38:35,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 247 transitions, 2050 flow [2024-06-27 18:38:35,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:38:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:38:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-06-27 18:38:35,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6425438596491229 [2024-06-27 18:38:35,753 INFO L175 Difference]: Start difference. First operand has 90 places, 105 transitions, 711 flow. Second operand 8 states and 293 transitions. [2024-06-27 18:38:35,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 247 transitions, 2050 flow [2024-06-27 18:38:35,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 247 transitions, 1850 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 18:38:35,837 INFO L231 Difference]: Finished difference. Result has 95 places, 151 transitions, 1179 flow [2024-06-27 18:38:35,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1179, PETRI_PLACES=95, PETRI_TRANSITIONS=151} [2024-06-27 18:38:35,838 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 30 predicate places. [2024-06-27 18:38:35,838 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 151 transitions, 1179 flow [2024-06-27 18:38:35,838 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 18:38:35,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:35,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:35,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:38:35,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:38:35,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:35,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1960395092, now seen corresponding path program 2 times [2024-06-27 18:38:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:35,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067791772] [2024-06-27 18:38:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:35,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:36,648 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 18:38:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:36,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067791772] [2024-06-27 18:38:36,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067791772] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:36,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:36,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:36,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73968918] [2024-06-27 18:38:36,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:36,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:36,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:36,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:36,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:36,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 18:38:36,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 151 transitions, 1179 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 18:38:36,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:36,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 18:38:36,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:40,835 INFO L124 PetriNetUnfolderBase]: 26696/36070 cut-off events. [2024-06-27 18:38:40,835 INFO L125 PetriNetUnfolderBase]: For 156831/156837 co-relation queries the response was YES. [2024-06-27 18:38:40,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151626 conditions, 36070 events. 26696/36070 cut-off events. For 156831/156837 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 211783 event pairs, 8674 based on Foata normal form. 30/34508 useless extension candidates. Maximal degree in co-relation 151593. Up to 32158 conditions per place. [2024-06-27 18:38:41,131 INFO L140 encePairwiseOnDemand]: 42/57 looper letters, 134 selfloop transitions, 103 changer transitions 0/249 dead transitions. [2024-06-27 18:38:41,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 249 transitions, 2285 flow [2024-06-27 18:38:41,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:38:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:38:41,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-06-27 18:38:41,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6290726817042607 [2024-06-27 18:38:41,132 INFO L175 Difference]: Start difference. First operand has 95 places, 151 transitions, 1179 flow. Second operand 7 states and 251 transitions. [2024-06-27 18:38:41,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 249 transitions, 2285 flow [2024-06-27 18:38:41,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 249 transitions, 2162 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-06-27 18:38:41,354 INFO L231 Difference]: Finished difference. Result has 102 places, 176 transitions, 1644 flow [2024-06-27 18:38:41,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1644, PETRI_PLACES=102, PETRI_TRANSITIONS=176} [2024-06-27 18:38:41,355 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 37 predicate places. [2024-06-27 18:38:41,355 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 176 transitions, 1644 flow [2024-06-27 18:38:41,355 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 18:38:41,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:41,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:38:41,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:38:41,356 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:38:41,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:41,356 INFO L85 PathProgramCache]: Analyzing trace with hash -218404080, now seen corresponding path program 3 times [2024-06-27 18:38:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:41,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887043603] [2024-06-27 18:38:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:41,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:42,144 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 18:38:42,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:42,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887043603] [2024-06-27 18:38:42,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887043603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:42,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:42,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:38:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531791463] [2024-06-27 18:38:42,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:42,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:38:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:42,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:38:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:38:42,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 57 [2024-06-27 18:38:42,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 176 transitions, 1644 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 18:38:42,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:42,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 57 [2024-06-27 18:38:42,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand