./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix030_power.oepc_pso.oepc_rmo.oepc.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/mix030_power.oepc_pso.oepc_rmo.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix030_power.oepc_pso.oepc_rmo.oepc.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 18:26:52,262 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:26:52,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:26:52,329 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:26:52,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:26:52,345 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:26:52,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:26:52,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:26:52,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:26:52,369 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:26:52,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:26:52,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:26:52,370 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:26:52,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:26:52,371 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:26:52,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:26:52,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:26:52,372 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:26:52,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:26:52,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:26:52,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:26:52,373 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:26:52,373 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:26:52,373 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:26:52,374 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:26:52,374 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:26:52,374 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:26:52,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:26:52,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:26:52,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:26:52,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:26:52,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:26:52,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:52,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:26:52,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:26:52,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:26:52,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:26:52,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:26:52,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:26:52,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:26:52,377 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:26:52,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:26:52,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:26:52,378 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:26:52,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:26:52,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:26:52,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:26:52,624 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:26:52,625 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:26:52,626 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix030_power.oepc_pso.oepc_rmo.oepc.yml/witness.yml [2024-06-27 18:26:52,999 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:26:52,999 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:26:53,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:54,191 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:26:54,404 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:26:54,405 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:54,419 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92b707107/160aefb16c504129afb0d95831e29894/FLAG4dd79eea9 [2024-06-27 18:26:54,431 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92b707107/160aefb16c504129afb0d95831e29894 [2024-06-27 18:26:54,432 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:26:54,433 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:26:54,434 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:54,435 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:26:54,438 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:26:54,439 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:52" (1/2) ... [2024-06-27 18:26:54,440 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503fddde and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:54, skipping insertion in model container [2024-06-27 18:26:54,440 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:52" (1/2) ... [2024-06-27 18:26:54,442 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1356668c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:26:54, skipping insertion in model container [2024-06-27 18:26:54,442 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:54" (2/2) ... [2024-06-27 18:26:54,443 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503fddde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:54, skipping insertion in model container [2024-06-27 18:26:54,443 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:26:54" (2/2) ... [2024-06-27 18:26:54,443 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:26:54,564 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:26:54,565 INFO L97 edCorrectnessWitness]: Location invariant before [L869-L869] ((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:26:54,565 INFO L97 edCorrectnessWitness]: Location invariant before [L865-L865] ((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:26:54,565 INFO L97 edCorrectnessWitness]: Location invariant before [L867-L867] ((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:26:54,565 INFO L97 edCorrectnessWitness]: Location invariant before [L870-L870] ((((((((((((((((((((! multithreaded || ((x == 0 || x == 1) || x == 2)) && (! multithreaded || a$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((z == 0 || z == 1) || z == 2))) && (! multithreaded || a$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (a$mem_tmp == 0 || a$mem_tmp == 1))) && (! multithreaded || a$read_delayed == (_Bool)0)) && (! multithreaded || (a$w_buff0 == 0 || a$w_buff0 == 1))) && (! multithreaded || (a$w_buff1 == 0 || a$w_buff1 == 1))) && (! multithreaded || a$r_buff1_thd4 == (_Bool)0)) && (! multithreaded || a$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p3_EBX == 0 || __unbuffered_p3_EBX == 1))) && (! multithreaded || a$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || a$r_buff0_thd4 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p3_EAX == 0 || __unbuffered_p3_EAX == 1) || __unbuffered_p3_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || a$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (a == 0 || a == 1))) && (! multithreaded || a$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || a$r_buff1_thd0 == (_Bool)0) [2024-06-27 18:26:54,566 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:26:54,566 INFO L106 edCorrectnessWitness]: ghost_update [L863-L863] multithreaded = 1; [2024-06-27 18:26:54,601 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:26:54,740 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/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2024-06-27 18:26:54,873 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:54,887 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:26:54,918 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/mix030_power.oepc_pso.oepc_rmo.oepc.i[969,982] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:26:54,993 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:26:55,023 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:26:55,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55 WrapperNode [2024-06-27 18:26:55,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:26:55,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:55,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:26:55,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:26:55,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,059 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,093 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 133 [2024-06-27 18:26:55,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:26:55,095 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:26:55,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:26:55,096 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:26:55,104 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,135 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 18:26:55,144 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,162 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,170 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,173 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:26:55,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:26:55,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:26:55,177 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:26:55,178 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (1/1) ... [2024-06-27 18:26:55,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:26:55,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:26:55,203 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 18:26:55,209 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 18:26:55,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:26:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:26:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:26:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:26:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:26:55,231 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:26:55,231 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:26:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:26:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-27 18:26:55,232 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-27 18:26:55,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:26:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:26:55,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:26:55,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:26:55,235 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 18:26:55,343 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:26:55,345 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:26:55,678 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:26:55,678 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:26:55,840 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:26:55,840 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:26:55,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:55 BoogieIcfgContainer [2024-06-27 18:26:55,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:26:55,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:26:55,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:26:55,846 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:26:55,846 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:26:52" (1/4) ... [2024-06-27 18:26:55,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead428e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:26:55, skipping insertion in model container [2024-06-27 18:26:55,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:26:54" (2/4) ... [2024-06-27 18:26:55,847 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:26:55, skipping insertion in model container [2024-06-27 18:26:55,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:26:55" (3/4) ... [2024-06-27 18:26:55,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ead428e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:26:55, skipping insertion in model container [2024-06-27 18:26:55,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:26:55" (4/4) ... [2024-06-27 18:26:55,849 INFO L112 eAbstractionObserver]: Analyzing ICFG mix030_power.oepc_pso.oepc_rmo.oepc.i [2024-06-27 18:26:55,862 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:26:55,862 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-27 18:26:55,862 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:26:55,907 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:26:55,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:26:55,974 INFO L124 PetriNetUnfolderBase]: 1/54 cut-off events. [2024-06-27 18:26:55,974 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 54 events. 1/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 95 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2024-06-27 18:26:55,979 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 58 transitions, 132 flow [2024-06-27 18:26:55,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 54 transitions, 120 flow [2024-06-27 18:26:55,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:26:56,045 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;@2e6d981d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:26:56,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-06-27 18:26:56,049 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:26:56,056 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:26:56,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:26:56,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:56,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:26:56,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:26:56,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:56,093 INFO L85 PathProgramCache]: Analyzing trace with hash 375873909, now seen corresponding path program 1 times [2024-06-27 18:26:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:56,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869283870] [2024-06-27 18:26:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:56,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:56,993 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 18:26:56,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:56,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869283870] [2024-06-27 18:26:56,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869283870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:56,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:56,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:26:56,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111119221] [2024-06-27 18:26:56,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:57,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:26:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:57,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:26:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:26:57,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:26:57,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 18:26:57,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:57,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:26:57,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:01,489 INFO L124 PetriNetUnfolderBase]: 36859/49915 cut-off events. [2024-06-27 18:27:01,489 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-27 18:27:01,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99169 conditions, 49915 events. 36859/49915 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 308375 event pairs, 24780 based on Foata normal form. 1513/49193 useless extension candidates. Maximal degree in co-relation 99156. Up to 48629 conditions per place. [2024-06-27 18:27:01,756 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 54 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-06-27 18:27:01,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 72 transitions, 285 flow [2024-06-27 18:27:01,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:01,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 114 transitions. [2024-06-27 18:27:01,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6551724137931034 [2024-06-27 18:27:01,767 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 120 flow. Second operand 3 states and 114 transitions. [2024-06-27 18:27:01,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 72 transitions, 285 flow [2024-06-27 18:27:01,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 278 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:01,773 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 160 flow [2024-06-27 18:27:01,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-06-27 18:27:01,777 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:27:01,777 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 160 flow [2024-06-27 18:27:01,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 18:27:01,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:01,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:27:01,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:27:01,778 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:01,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 375875085, now seen corresponding path program 1 times [2024-06-27 18:27:01,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:01,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716813241] [2024-06-27 18:27:01,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:01,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:01,821 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 18:27:01,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:01,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716813241] [2024-06-27 18:27:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716813241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:01,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:27:01,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552980664] [2024-06-27 18:27:01,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:01,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:27:01,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:01,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:27:01,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:27:01,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2024-06-27 18:27:01,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 18:27:01,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:01,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2024-06-27 18:27:01,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:02,796 INFO L124 PetriNetUnfolderBase]: 5202/9227 cut-off events. [2024-06-27 18:27:02,797 INFO L125 PetriNetUnfolderBase]: For 688/688 co-relation queries the response was YES. [2024-06-27 18:27:02,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17508 conditions, 9227 events. 5202/9227 cut-off events. For 688/688 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 73651 event pairs, 3379 based on Foata normal form. 0/8483 useless extension candidates. Maximal degree in co-relation 17496. Up to 6062 conditions per place. [2024-06-27 18:27:02,857 INFO L140 encePairwiseOnDemand]: 55/58 looper letters, 45 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-06-27 18:27:02,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 77 transitions, 295 flow [2024-06-27 18:27:02,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:27:02,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:27:02,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 138 transitions. [2024-06-27 18:27:02,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7931034482758621 [2024-06-27 18:27:02,859 INFO L175 Difference]: Start difference. First operand has 65 places, 58 transitions, 160 flow. Second operand 3 states and 138 transitions. [2024-06-27 18:27:02,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 77 transitions, 295 flow [2024-06-27 18:27:02,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 77 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:02,862 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 152 flow [2024-06-27 18:27:02,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2024-06-27 18:27:02,862 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -1 predicate places. [2024-06-27 18:27:02,863 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 152 flow [2024-06-27 18:27:02,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 18:27:02,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:02,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:02,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:27:02,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:02,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:02,864 INFO L85 PathProgramCache]: Analyzing trace with hash 438679945, now seen corresponding path program 1 times [2024-06-27 18:27:02,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:02,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518005212] [2024-06-27 18:27:02,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:02,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:03,472 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 18:27:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518005212] [2024-06-27 18:27:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518005212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:27:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993016008] [2024-06-27 18:27:03,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:03,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:27:03,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:27:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:27:03,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:27:03,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:27:03,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:03,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:27:03,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:06,634 INFO L124 PetriNetUnfolderBase]: 31356/46113 cut-off events. [2024-06-27 18:27:06,635 INFO L125 PetriNetUnfolderBase]: For 9698/9698 co-relation queries the response was YES. [2024-06-27 18:27:06,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97844 conditions, 46113 events. 31356/46113 cut-off events. For 9698/9698 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 322820 event pairs, 23175 based on Foata normal form. 4/44681 useless extension candidates. Maximal degree in co-relation 97831. Up to 41418 conditions per place. [2024-06-27 18:27:06,849 INFO L140 encePairwiseOnDemand]: 47/58 looper letters, 66 selfloop transitions, 10 changer transitions 2/90 dead transitions. [2024-06-27 18:27:06,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 90 transitions, 404 flow [2024-06-27 18:27:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:27:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:27:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 142 transitions. [2024-06-27 18:27:06,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6120689655172413 [2024-06-27 18:27:06,851 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 152 flow. Second operand 4 states and 142 transitions. [2024-06-27 18:27:06,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 90 transitions, 404 flow [2024-06-27 18:27:06,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 90 transitions, 396 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:06,854 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 233 flow [2024-06-27 18:27:06,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-06-27 18:27:06,855 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 2 predicate places. [2024-06-27 18:27:06,855 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 233 flow [2024-06-27 18:27:06,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 18:27:06,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:06,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:06,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:27:06,856 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:06,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:06,857 INFO L85 PathProgramCache]: Analyzing trace with hash 714177734, now seen corresponding path program 1 times [2024-06-27 18:27:06,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:06,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518141185] [2024-06-27 18:27:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:06,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:07,879 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 18:27:07,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:07,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518141185] [2024-06-27 18:27:07,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518141185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:07,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:07,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:27:07,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830495722] [2024-06-27 18:27:07,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:07,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:27:07,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:27:07,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:27:07,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:27:07,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:27:07,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:07,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:27:07,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:11,038 INFO L124 PetriNetUnfolderBase]: 27083/40545 cut-off events. [2024-06-27 18:27:11,038 INFO L125 PetriNetUnfolderBase]: For 17362/17362 co-relation queries the response was YES. [2024-06-27 18:27:11,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92809 conditions, 40545 events. 27083/40545 cut-off events. For 17362/17362 co-relation queries the response was YES. Maximal size of possible extension queue 1469. Compared 288143 event pairs, 16431 based on Foata normal form. 7/39157 useless extension candidates. Maximal degree in co-relation 92794. Up to 35734 conditions per place. [2024-06-27 18:27:11,265 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 87 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-06-27 18:27:11,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 122 transitions, 649 flow [2024-06-27 18:27:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:11,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-06-27 18:27:11,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6310344827586207 [2024-06-27 18:27:11,267 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 233 flow. Second operand 5 states and 183 transitions. [2024-06-27 18:27:11,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 122 transitions, 649 flow [2024-06-27 18:27:11,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 122 transitions, 634 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-27 18:27:11,272 INFO L231 Difference]: Finished difference. Result has 73 places, 79 transitions, 380 flow [2024-06-27 18:27:11,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=380, PETRI_PLACES=73, PETRI_TRANSITIONS=79} [2024-06-27 18:27:11,273 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2024-06-27 18:27:11,273 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 79 transitions, 380 flow [2024-06-27 18:27:11,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 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 18:27:11,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:11,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:11,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:27:11,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:11,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:11,274 INFO L85 PathProgramCache]: Analyzing trace with hash -360433678, now seen corresponding path program 1 times [2024-06-27 18:27:11,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:11,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872658919] [2024-06-27 18:27:11,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:11,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:12,636 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 18:27:12,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:12,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872658919] [2024-06-27 18:27:12,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872658919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:12,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:12,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:12,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492274089] [2024-06-27 18:27:12,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:12,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:12,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:12,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:12,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:12,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:27:12,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 79 transitions, 380 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 18:27:12,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:12,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:27:12,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:16,098 INFO L124 PetriNetUnfolderBase]: 27120/37499 cut-off events. [2024-06-27 18:27:16,099 INFO L125 PetriNetUnfolderBase]: For 40960/40964 co-relation queries the response was YES. [2024-06-27 18:27:16,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102970 conditions, 37499 events. 27120/37499 cut-off events. For 40960/40964 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 233238 event pairs, 13646 based on Foata normal form. 11/37165 useless extension candidates. Maximal degree in co-relation 102951. Up to 35705 conditions per place. [2024-06-27 18:27:16,295 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 101 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-27 18:27:16,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 156 transitions, 980 flow [2024-06-27 18:27:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:16,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 218 transitions. [2024-06-27 18:27:16,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6264367816091954 [2024-06-27 18:27:16,297 INFO L175 Difference]: Start difference. First operand has 73 places, 79 transitions, 380 flow. Second operand 6 states and 218 transitions. [2024-06-27 18:27:16,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 156 transitions, 980 flow [2024-06-27 18:27:16,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 156 transitions, 968 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-06-27 18:27:16,315 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 652 flow [2024-06-27 18:27:16,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=652, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2024-06-27 18:27:16,318 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 16 predicate places. [2024-06-27 18:27:16,318 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 652 flow [2024-06-27 18:27:16,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 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 18:27:16,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:16,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:27:16,319 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:16,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash -869921499, now seen corresponding path program 1 times [2024-06-27 18:27:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:16,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554173410] [2024-06-27 18:27:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:16,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:17,083 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 18:27:17,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:17,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554173410] [2024-06-27 18:27:17,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554173410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:17,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:17,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946272074] [2024-06-27 18:27:17,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:17,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:17,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:17,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 58 [2024-06-27 18:27:17,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 652 flow. Second operand has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 18:27:17,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:17,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 58 [2024-06-27 18:27:17,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:20,977 INFO L124 PetriNetUnfolderBase]: 27170/37513 cut-off events. [2024-06-27 18:27:20,977 INFO L125 PetriNetUnfolderBase]: For 80933/80941 co-relation queries the response was YES. [2024-06-27 18:27:21,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118028 conditions, 37513 events. 27170/37513 cut-off events. For 80933/80941 co-relation queries the response was YES. Maximal size of possible extension queue 1359. Compared 232186 event pairs, 11660 based on Foata normal form. 22/37204 useless extension candidates. Maximal degree in co-relation 118003. Up to 35673 conditions per place. [2024-06-27 18:27:21,211 INFO L140 encePairwiseOnDemand]: 45/58 looper letters, 111 selfloop transitions, 47 changer transitions 0/170 dead transitions. [2024-06-27 18:27:21,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1236 flow [2024-06-27 18:27:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:27:21,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:27:21,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-06-27 18:27:21,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108374384236454 [2024-06-27 18:27:21,213 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 652 flow. Second operand 7 states and 248 transitions. [2024-06-27 18:27:21,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1236 flow [2024-06-27 18:27:21,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 170 transitions, 1188 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-06-27 18:27:21,255 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 745 flow [2024-06-27 18:27:21,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=745, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-06-27 18:27:21,255 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-06-27 18:27:21,256 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 745 flow [2024-06-27 18:27:21,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.142857142857142) internal successors, (120), 7 states have internal predecessors, (120), 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 18:27:21,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:21,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:21,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:27:21,256 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:21,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:21,257 INFO L85 PathProgramCache]: Analyzing trace with hash 967224102, now seen corresponding path program 1 times [2024-06-27 18:27:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:21,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897360973] [2024-06-27 18:27:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:21,753 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 18:27:21,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:21,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897360973] [2024-06-27 18:27:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897360973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:21,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:21,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:27:21,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247078402] [2024-06-27 18:27:21,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:27:21,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:21,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:27:21,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:27:21,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:27:21,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 745 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 18:27:21,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:21,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:27:21,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:26,361 INFO L124 PetriNetUnfolderBase]: 31496/46631 cut-off events. [2024-06-27 18:27:26,361 INFO L125 PetriNetUnfolderBase]: For 100058/100058 co-relation queries the response was YES. [2024-06-27 18:27:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138190 conditions, 46631 events. 31496/46631 cut-off events. For 100058/100058 co-relation queries the response was YES. Maximal size of possible extension queue 1588. Compared 330227 event pairs, 17288 based on Foata normal form. 3/45425 useless extension candidates. Maximal degree in co-relation 138161. Up to 41606 conditions per place. [2024-06-27 18:27:27,058 INFO L140 encePairwiseOnDemand]: 48/58 looper letters, 96 selfloop transitions, 18 changer transitions 0/124 dead transitions. [2024-06-27 18:27:27,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 124 transitions, 1029 flow [2024-06-27 18:27:27,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:27:27,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:27:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-27 18:27:27,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503448275862069 [2024-06-27 18:27:27,060 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 745 flow. Second operand 5 states and 146 transitions. [2024-06-27 18:27:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 124 transitions, 1029 flow [2024-06-27 18:27:27,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 908 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:27,104 INFO L231 Difference]: Finished difference. Result has 88 places, 101 transitions, 676 flow [2024-06-27 18:27:27,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=676, PETRI_PLACES=88, PETRI_TRANSITIONS=101} [2024-06-27 18:27:27,105 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 22 predicate places. [2024-06-27 18:27:27,105 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 101 transitions, 676 flow [2024-06-27 18:27:27,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 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 18:27:27,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:27,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:27,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:27:27,106 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:27,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:27,106 INFO L85 PathProgramCache]: Analyzing trace with hash -81139797, now seen corresponding path program 1 times [2024-06-27 18:27:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082130693] [2024-06-27 18:27:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:27:27,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:27,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082130693] [2024-06-27 18:27:27,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082130693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:27,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:27,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598716318] [2024-06-27 18:27:27,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:27,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:27,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:27,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:27:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 101 transitions, 676 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:27:27,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:32,457 INFO L124 PetriNetUnfolderBase]: 31552/46892 cut-off events. [2024-06-27 18:27:32,457 INFO L125 PetriNetUnfolderBase]: For 106856/106856 co-relation queries the response was YES. [2024-06-27 18:27:32,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139358 conditions, 46892 events. 31552/46892 cut-off events. For 106856/106856 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 333318 event pairs, 16497 based on Foata normal form. 10/45803 useless extension candidates. Maximal degree in co-relation 139327. Up to 41496 conditions per place. [2024-06-27 18:27:32,780 INFO L140 encePairwiseOnDemand]: 46/58 looper letters, 119 selfloop transitions, 28 changer transitions 0/157 dead transitions. [2024-06-27 18:27:32,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 157 transitions, 1222 flow [2024-06-27 18:27:32,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:27:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:27:32,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-27 18:27:32,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316091954022989 [2024-06-27 18:27:32,782 INFO L175 Difference]: Start difference. First operand has 88 places, 101 transitions, 676 flow. Second operand 6 states and 185 transitions. [2024-06-27 18:27:32,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 157 transitions, 1222 flow [2024-06-27 18:27:32,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 157 transitions, 1169 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:27:32,843 INFO L231 Difference]: Finished difference. Result has 92 places, 115 transitions, 827 flow [2024-06-27 18:27:32,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=827, PETRI_PLACES=92, PETRI_TRANSITIONS=115} [2024-06-27 18:27:32,844 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 26 predicate places. [2024-06-27 18:27:32,844 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 115 transitions, 827 flow [2024-06-27 18:27:32,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:32,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:32,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:32,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:27:32,845 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 8 more)] === [2024-06-27 18:27:32,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:32,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1495933186, now seen corresponding path program 1 times [2024-06-27 18:27:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:32,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605597359] [2024-06-27 18:27:32,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:32,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:33,439 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 18:27:33,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:33,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605597359] [2024-06-27 18:27:33,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605597359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:33,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:33,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:27:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509708806] [2024-06-27 18:27:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:33,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:27:33,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:33,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:27:33,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:27:33,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 58 [2024-06-27 18:27:33,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 115 transitions, 827 flow. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 7 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:27:33,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:33,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 58 [2024-06-27 18:27:33,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand