./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.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/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.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 18:24:55,019 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:24:55,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:24:55,074 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:24:55,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:24:55,092 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:24:55,093 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:24:55,093 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:24:55,094 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:24:55,094 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:24:55,094 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:24:55,094 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:24:55,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:24:55,096 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:24:55,097 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:24:55,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:24:55,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:24:55,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:24:55,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:24:55,100 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:24:55,100 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:24:55,101 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:24:55,101 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:24:55,101 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:24:55,102 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:24:55,102 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:24:55,103 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:24:55,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:24:55,104 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:24:55,104 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:24:55,104 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:24:55,104 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:24:55,104 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:24:55,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:24:55,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:24:55,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:24:55,105 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:24:55,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:24:55,106 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:24:55,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:24:55,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:24:55,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:24:55,337 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:24:55,338 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:24:55,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:24:55,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:24:55,479 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:24:55,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 18:24:56,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:24:56,701 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:24:56,701 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 18:24:56,711 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39af4a86/73f09614acfc41f682c616238cc35be1/FLAGf3eac1f45 [2024-06-27 18:24:56,721 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b39af4a86/73f09614acfc41f682c616238cc35be1 [2024-06-27 18:24:56,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:24:56,723 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:24:56,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:24:56,727 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:24:56,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:24:56,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:55" (1/2) ... [2024-06-27 18:24:56,732 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b6bc22 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:24:56, skipping insertion in model container [2024-06-27 18:24:56,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:55" (1/2) ... [2024-06-27 18:24:56,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@392708e8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:24:56, skipping insertion in model container [2024-06-27 18:24:56,733 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:24:56" (2/2) ... [2024-06-27 18:24:56,734 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62b6bc22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:56, skipping insertion in model container [2024-06-27 18:24:56,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:24:56" (2/2) ... [2024-06-27 18:24:56,734 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:24:56,801 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:24:56,802 INFO L97 edCorrectnessWitness]: Location invariant before [L841-L841] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-27 18:24:56,802 INFO L97 edCorrectnessWitness]: Location invariant before [L844-L844] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-27 18:24:56,803 INFO L97 edCorrectnessWitness]: Location invariant before [L843-L843] ((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1))) && (! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1))) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1)) [2024-06-27 18:24:56,803 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:24:56,803 INFO L106 edCorrectnessWitness]: ghost_update [L839-L839] multithreaded = 1; [2024-06-27 18:24:56,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:24:57,003 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/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[996,1009] [2024-06-27 18:24:57,199 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:24:57,206 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:24:57,240 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/mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:24:57,320 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:24:57,354 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:24:57,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57 WrapperNode [2024-06-27 18:24:57,355 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:24:57,356 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:24:57,356 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:24:57,356 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:24:57,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,385 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,417 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-06-27 18:24:57,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:24:57,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:24:57,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:24:57,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:24:57,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,440 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,462 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 18:24:57,463 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,463 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,472 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,481 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,483 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,487 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:24:57,495 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:24:57,495 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:24:57,495 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:24:57,496 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (1/1) ... [2024-06-27 18:24:57,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:24:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:24:57,522 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 18:24:57,532 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 18:24:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:24:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:24:57,553 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:24:57,553 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:24:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:24:57,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:24:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 18:24:57,554 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 18:24:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:24:57,554 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:24:57,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:24:57,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:24:57,556 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 18:24:57,667 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:24:57,669 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:24:57,978 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:24:57,978 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:24:58,121 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:24:58,121 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:24:58,121 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:24:58 BoogieIcfgContainer [2024-06-27 18:24:58,121 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:24:58,124 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:24:58,124 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:24:58,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:24:58,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:24:55" (1/4) ... [2024-06-27 18:24:58,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ed661f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:24:58, skipping insertion in model container [2024-06-27 18:24:58,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:24:56" (2/4) ... [2024-06-27 18:24:58,128 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ed661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:24:58, skipping insertion in model container [2024-06-27 18:24:58,128 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:24:57" (3/4) ... [2024-06-27 18:24:58,129 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31ed661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:24:58, skipping insertion in model container [2024-06-27 18:24:58,129 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:24:58" (4/4) ... [2024-06-27 18:24:58,130 INFO L112 eAbstractionObserver]: Analyzing ICFG mix025_power.oepc_power.opt_pso.oepc_rmo.oepc_tso.oepc_tso.opt.i [2024-06-27 18:24:58,143 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:24:58,143 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 18:24:58,143 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:24:58,183 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:24:58,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:24:58,234 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 18:24:58,234 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:24:58,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-06-27 18:24:58,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 18:24:58,241 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 18:24:58,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:24:58,259 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;@7c628f9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:24:58,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 18:24:58,265 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:24:58,265 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:24:58,266 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:24:58,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:58,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:24:58,267 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:58,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:58,274 INFO L85 PathProgramCache]: Analyzing trace with hash 356459367, now seen corresponding path program 1 times [2024-06-27 18:24:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:58,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543881205] [2024-06-27 18:24:58,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:58,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:59,030 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 18:24:59,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:59,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543881205] [2024-06-27 18:24:59,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543881205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:59,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:59,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:24:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808794981] [2024-06-27 18:24:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:59,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:24:59,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:59,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:24:59,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:24:59,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:24:59,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:24:59,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:59,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:24:59,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:59,817 INFO L124 PetriNetUnfolderBase]: 3816/6302 cut-off events. [2024-06-27 18:24:59,817 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-27 18:24:59,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11887 conditions, 6302 events. 3816/6302 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 40877 event pairs, 2900 based on Foata normal form. 181/5944 useless extension candidates. Maximal degree in co-relation 11875. Up to 5482 conditions per place. [2024-06-27 18:24:59,850 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 41 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2024-06-27 18:24:59,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 58 transitions, 223 flow [2024-06-27 18:24:59,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:24:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:24:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-06-27 18:24:59,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6808510638297872 [2024-06-27 18:24:59,862 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 96 transitions. [2024-06-27 18:24:59,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 58 transitions, 223 flow [2024-06-27 18:24:59,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 218 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 18:24:59,870 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 18:24:59,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-27 18:24:59,874 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:24:59,875 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 18:24:59,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 18:24:59,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:59,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:24:59,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:24:59,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:24:59,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:59,877 INFO L85 PathProgramCache]: Analyzing trace with hash 356459491, now seen corresponding path program 1 times [2024-06-27 18:24:59,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:59,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998281374] [2024-06-27 18:24:59,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:59,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:59,960 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 18:24:59,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:59,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998281374] [2024-06-27 18:24:59,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998281374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:59,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:59,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:24:59,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754262062] [2024-06-27 18:24:59,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:59,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:24:59,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:24:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:24:59,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 47 [2024-06-27 18:24:59,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:24:59,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:59,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 47 [2024-06-27 18:24:59,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:00,200 INFO L124 PetriNetUnfolderBase]: 950/1800 cut-off events. [2024-06-27 18:25:00,200 INFO L125 PetriNetUnfolderBase]: For 157/157 co-relation queries the response was YES. [2024-06-27 18:25:00,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 1800 events. 950/1800 cut-off events. For 157/157 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11928 event pairs, 463 based on Foata normal form. 0/1693 useless extension candidates. Maximal degree in co-relation 3490. Up to 1207 conditions per place. [2024-06-27 18:25:00,208 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 35 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-06-27 18:25:00,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 232 flow [2024-06-27 18:25:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:25:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:25:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-06-27 18:25:00,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7801418439716312 [2024-06-27 18:25:00,212 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 110 transitions. [2024-06-27 18:25:00,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 232 flow [2024-06-27 18:25:00,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:00,214 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-06-27 18:25:00,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:25:00,215 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 18:25:00,215 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-06-27 18:25:00,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 18:25:00,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:00,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:00,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:25:00,218 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:00,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:00,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1039891995, now seen corresponding path program 1 times [2024-06-27 18:25:00,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:00,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653232417] [2024-06-27 18:25:00,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:00,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:00,610 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 18:25:00,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:00,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653232417] [2024-06-27 18:25:00,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653232417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:00,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:00,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:25:00,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668988815] [2024-06-27 18:25:00,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:00,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:25:00,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:00,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:25:00,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:25:00,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 47 [2024-06-27 18:25:00,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:25:00,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:00,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 47 [2024-06-27 18:25:00,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:01,114 INFO L124 PetriNetUnfolderBase]: 3137/5127 cut-off events. [2024-06-27 18:25:01,114 INFO L125 PetriNetUnfolderBase]: For 1276/1276 co-relation queries the response was YES. [2024-06-27 18:25:01,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10943 conditions, 5127 events. 3137/5127 cut-off events. For 1276/1276 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 31761 event pairs, 1949 based on Foata normal form. 3/4946 useless extension candidates. Maximal degree in co-relation 10930. Up to 4506 conditions per place. [2024-06-27 18:25:01,138 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 49 selfloop transitions, 8 changer transitions 2/71 dead transitions. [2024-06-27 18:25:01,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 312 flow [2024-06-27 18:25:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:25:01,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:25:01,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-06-27 18:25:01,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6329787234042553 [2024-06-27 18:25:01,143 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 119 transitions. [2024-06-27 18:25:01,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 312 flow [2024-06-27 18:25:01,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 71 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:01,146 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-06-27 18:25:01,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-06-27 18:25:01,147 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-06-27 18:25:01,148 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-06-27 18:25:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 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 18:25:01,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:01,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:25:01,148 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:01,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1391215716, now seen corresponding path program 1 times [2024-06-27 18:25:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:01,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232937333] [2024-06-27 18:25:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:01,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:01,934 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 18:25:01,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:01,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232937333] [2024-06-27 18:25:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232937333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374948941] [2024-06-27 18:25:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:01,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:01,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:01,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:01,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:25:01,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 18:25:01,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:01,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:25:01,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:02,504 INFO L124 PetriNetUnfolderBase]: 3271/4997 cut-off events. [2024-06-27 18:25:02,504 INFO L125 PetriNetUnfolderBase]: For 2253/2253 co-relation queries the response was YES. [2024-06-27 18:25:02,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11982 conditions, 4997 events. 3271/4997 cut-off events. For 2253/2253 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28539 event pairs, 1340 based on Foata normal form. 3/4965 useless extension candidates. Maximal degree in co-relation 11967. Up to 4648 conditions per place. [2024-06-27 18:25:02,529 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 69 selfloop transitions, 21 changer transitions 0/101 dead transitions. [2024-06-27 18:25:02,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 521 flow [2024-06-27 18:25:02,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-06-27 18:25:02,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599290780141844 [2024-06-27 18:25:02,531 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 6 states and 169 transitions. [2024-06-27 18:25:02,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 521 flow [2024-06-27 18:25:02,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 504 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:02,534 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 301 flow [2024-06-27 18:25:02,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=301, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2024-06-27 18:25:02,534 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 9 predicate places. [2024-06-27 18:25:02,534 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 301 flow [2024-06-27 18:25:02,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 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 18:25:02,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:02,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:02,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:25:02,535 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:02,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:02,536 INFO L85 PathProgramCache]: Analyzing trace with hash 178015639, now seen corresponding path program 1 times [2024-06-27 18:25:02,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:02,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80597275] [2024-06-27 18:25:02,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:02,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:03,236 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 18:25:03,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:03,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80597275] [2024-06-27 18:25:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80597275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:03,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:03,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133831875] [2024-06-27 18:25:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:03,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:03,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:03,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:03,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 47 [2024-06-27 18:25:03,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 301 flow. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 18:25:03,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:03,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 47 [2024-06-27 18:25:03,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:03,972 INFO L124 PetriNetUnfolderBase]: 3262/4983 cut-off events. [2024-06-27 18:25:03,973 INFO L125 PetriNetUnfolderBase]: For 4715/4715 co-relation queries the response was YES. [2024-06-27 18:25:03,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 4983 events. 3262/4983 cut-off events. For 4715/4715 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28448 event pairs, 1008 based on Foata normal form. 6/4954 useless extension candidates. Maximal degree in co-relation 13349. Up to 4591 conditions per place. [2024-06-27 18:25:03,999 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 76 selfloop transitions, 23 changer transitions 0/110 dead transitions. [2024-06-27 18:25:03,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 110 transitions, 627 flow [2024-06-27 18:25:04,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:04,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:04,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-06-27 18:25:04,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5835866261398176 [2024-06-27 18:25:04,001 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 301 flow. Second operand 7 states and 192 transitions. [2024-06-27 18:25:04,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 110 transitions, 627 flow [2024-06-27 18:25:04,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 110 transitions, 604 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:04,006 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 343 flow [2024-06-27 18:25:04,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=343, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2024-06-27 18:25:04,007 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:25:04,007 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 343 flow [2024-06-27 18:25:04,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 7 states have internal predecessors, (106), 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 18:25:04,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:04,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:04,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:25:04,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:04,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:04,009 INFO L85 PathProgramCache]: Analyzing trace with hash -635931098, now seen corresponding path program 1 times [2024-06-27 18:25:04,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:04,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744919170] [2024-06-27 18:25:04,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:04,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:04,466 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 18:25:04,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:04,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744919170] [2024-06-27 18:25:04,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744919170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:04,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524064867] [2024-06-27 18:25:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:04,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:04,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:04,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:04,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 343 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:04,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:04,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:04,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:05,165 INFO L124 PetriNetUnfolderBase]: 3797/6331 cut-off events. [2024-06-27 18:25:05,166 INFO L125 PetriNetUnfolderBase]: For 7693/7693 co-relation queries the response was YES. [2024-06-27 18:25:05,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16660 conditions, 6331 events. 3797/6331 cut-off events. For 7693/7693 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 40354 event pairs, 1709 based on Foata normal form. 2/6150 useless extension candidates. Maximal degree in co-relation 16638. Up to 5433 conditions per place. [2024-06-27 18:25:05,210 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 64 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-06-27 18:25:05,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 553 flow [2024-06-27 18:25:05,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:05,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 118 transitions. [2024-06-27 18:25:05,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 18:25:05,211 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 343 flow. Second operand 5 states and 118 transitions. [2024-06-27 18:25:05,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 553 flow [2024-06-27 18:25:05,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 84 transitions, 498 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:05,220 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 341 flow [2024-06-27 18:25:05,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=341, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2024-06-27 18:25:05,222 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-06-27 18:25:05,222 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 341 flow [2024-06-27 18:25:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:05,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:05,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:05,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:25:05,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:05,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1760974299, now seen corresponding path program 1 times [2024-06-27 18:25:05,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:05,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156705777] [2024-06-27 18:25:05,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:05,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:05,726 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 18:25:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156705777] [2024-06-27 18:25:05,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156705777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:05,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:05,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:05,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965230915] [2024-06-27 18:25:05,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:05,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:05,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:05,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:05,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:05,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:05,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 18:25:05,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:05,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:05,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:06,635 INFO L124 PetriNetUnfolderBase]: 4461/7256 cut-off events. [2024-06-27 18:25:06,635 INFO L125 PetriNetUnfolderBase]: For 11257/11257 co-relation queries the response was YES. [2024-06-27 18:25:06,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19990 conditions, 7256 events. 4461/7256 cut-off events. For 11257/11257 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 45485 event pairs, 1915 based on Foata normal form. 6/7043 useless extension candidates. Maximal degree in co-relation 19966. Up to 6239 conditions per place. [2024-06-27 18:25:06,679 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 81 selfloop transitions, 19 changer transitions 0/108 dead transitions. [2024-06-27 18:25:06,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 108 transitions, 691 flow [2024-06-27 18:25:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 144 transitions. [2024-06-27 18:25:06,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:25:06,681 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 341 flow. Second operand 6 states and 144 transitions. [2024-06-27 18:25:06,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 108 transitions, 691 flow [2024-06-27 18:25:06,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 108 transitions, 664 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:06,687 INFO L231 Difference]: Finished difference. Result has 72 places, 77 transitions, 446 flow [2024-06-27 18:25:06,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=72, PETRI_TRANSITIONS=77} [2024-06-27 18:25:06,689 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 19 predicate places. [2024-06-27 18:25:06,689 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 77 transitions, 446 flow [2024-06-27 18:25:06,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 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 18:25:06,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:06,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:06,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:25:06,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:06,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:06,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1251015068, now seen corresponding path program 1 times [2024-06-27 18:25:06,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:06,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694139455] [2024-06-27 18:25:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:06,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:07,305 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 18:25:07,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:07,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694139455] [2024-06-27 18:25:07,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694139455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:07,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:07,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:07,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114471933] [2024-06-27 18:25:07,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:07,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:07,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:07,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:07,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:07,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:07,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 77 transitions, 446 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 18:25:07,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:07,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:07,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:08,044 INFO L124 PetriNetUnfolderBase]: 4031/6553 cut-off events. [2024-06-27 18:25:08,045 INFO L125 PetriNetUnfolderBase]: For 15184/15204 co-relation queries the response was YES. [2024-06-27 18:25:08,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20223 conditions, 6553 events. 4031/6553 cut-off events. For 15184/15204 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40643 event pairs, 1511 based on Foata normal form. 6/6350 useless extension candidates. Maximal degree in co-relation 20196. Up to 5683 conditions per place. [2024-06-27 18:25:08,082 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 88 selfloop transitions, 18 changer transitions 0/118 dead transitions. [2024-06-27 18:25:08,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 833 flow [2024-06-27 18:25:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-27 18:25:08,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:25:08,084 INFO L175 Difference]: Start difference. First operand has 72 places, 77 transitions, 446 flow. Second operand 6 states and 147 transitions. [2024-06-27 18:25:08,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 833 flow [2024-06-27 18:25:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 118 transitions, 817 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:08,093 INFO L231 Difference]: Finished difference. Result has 79 places, 88 transitions, 583 flow [2024-06-27 18:25:08,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=583, PETRI_PLACES=79, PETRI_TRANSITIONS=88} [2024-06-27 18:25:08,094 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 26 predicate places. [2024-06-27 18:25:08,094 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 88 transitions, 583 flow [2024-06-27 18:25:08,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 18:25:08,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:08,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:08,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:25:08,095 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:08,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:08,095 INFO L85 PathProgramCache]: Analyzing trace with hash 72085702, now seen corresponding path program 2 times [2024-06-27 18:25:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:08,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950863156] [2024-06-27 18:25:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:08,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:08,626 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 18:25:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:08,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950863156] [2024-06-27 18:25:08,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950863156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:08,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:08,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423572672] [2024-06-27 18:25:08,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:08,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:08,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:08,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:08,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 88 transitions, 583 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 18:25:08,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:08,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:08,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:09,487 INFO L124 PetriNetUnfolderBase]: 4105/6775 cut-off events. [2024-06-27 18:25:09,488 INFO L125 PetriNetUnfolderBase]: For 19297/19311 co-relation queries the response was YES. [2024-06-27 18:25:09,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21837 conditions, 6775 events. 4105/6775 cut-off events. For 19297/19311 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 43219 event pairs, 1731 based on Foata normal form. 2/6563 useless extension candidates. Maximal degree in co-relation 21805. Up to 5825 conditions per place. [2024-06-27 18:25:09,525 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 86 selfloop transitions, 13 changer transitions 0/111 dead transitions. [2024-06-27 18:25:09,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 839 flow [2024-06-27 18:25:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:09,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:09,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:25:09,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:25:09,527 INFO L175 Difference]: Start difference. First operand has 79 places, 88 transitions, 583 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:25:09,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 839 flow [2024-06-27 18:25:09,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 111 transitions, 807 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:09,541 INFO L231 Difference]: Finished difference. Result has 84 places, 88 transitions, 585 flow [2024-06-27 18:25:09,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=585, PETRI_PLACES=84, PETRI_TRANSITIONS=88} [2024-06-27 18:25:09,542 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 31 predicate places. [2024-06-27 18:25:09,543 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 88 transitions, 585 flow [2024-06-27 18:25:09,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 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 18:25:09,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:09,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:25:09,543 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:09,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1112690451, now seen corresponding path program 1 times [2024-06-27 18:25:09,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950022535] [2024-06-27 18:25:09,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:10,203 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 18:25:10,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:10,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950022535] [2024-06-27 18:25:10,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950022535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:10,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:10,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:10,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701229242] [2024-06-27 18:25:10,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:10,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:10,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:10,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:10,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:10,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:10,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 88 transitions, 585 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:10,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:10,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:10,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:11,099 INFO L124 PetriNetUnfolderBase]: 4051/6578 cut-off events. [2024-06-27 18:25:11,099 INFO L125 PetriNetUnfolderBase]: For 20850/20864 co-relation queries the response was YES. [2024-06-27 18:25:11,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21835 conditions, 6578 events. 4051/6578 cut-off events. For 20850/20864 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40767 event pairs, 1465 based on Foata normal form. 2/6371 useless extension candidates. Maximal degree in co-relation 21800. Up to 5718 conditions per place. [2024-06-27 18:25:11,147 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 103 selfloop transitions, 15 changer transitions 0/130 dead transitions. [2024-06-27 18:25:11,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 130 transitions, 955 flow [2024-06-27 18:25:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:11,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-06-27 18:25:11,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-06-27 18:25:11,148 INFO L175 Difference]: Start difference. First operand has 84 places, 88 transitions, 585 flow. Second operand 7 states and 169 transitions. [2024-06-27 18:25:11,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 130 transitions, 955 flow [2024-06-27 18:25:11,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 130 transitions, 922 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:11,166 INFO L231 Difference]: Finished difference. Result has 87 places, 91 transitions, 626 flow [2024-06-27 18:25:11,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=626, PETRI_PLACES=87, PETRI_TRANSITIONS=91} [2024-06-27 18:25:11,167 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 34 predicate places. [2024-06-27 18:25:11,167 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 91 transitions, 626 flow [2024-06-27 18:25:11,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:11,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:11,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:11,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:25:11,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:11,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:11,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1112570481, now seen corresponding path program 2 times [2024-06-27 18:25:11,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:11,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842280570] [2024-06-27 18:25:11,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:11,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:11,800 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 18:25:11,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:11,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842280570] [2024-06-27 18:25:11,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842280570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:11,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:11,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:11,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199234153] [2024-06-27 18:25:11,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:11,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:11,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:11,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:11,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:11,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:11,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 91 transitions, 626 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:11,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:12,724 INFO L124 PetriNetUnfolderBase]: 4079/6621 cut-off events. [2024-06-27 18:25:12,724 INFO L125 PetriNetUnfolderBase]: For 25659/25684 co-relation queries the response was YES. [2024-06-27 18:25:12,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23068 conditions, 6621 events. 4079/6621 cut-off events. For 25659/25684 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40927 event pairs, 1473 based on Foata normal form. 8/6419 useless extension candidates. Maximal degree in co-relation 23033. Up to 5676 conditions per place. [2024-06-27 18:25:12,760 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 95 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-27 18:25:12,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 135 transitions, 1080 flow [2024-06-27 18:25:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:12,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:12,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 18:25:12,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 18:25:12,763 INFO L175 Difference]: Start difference. First operand has 87 places, 91 transitions, 626 flow. Second operand 7 states and 172 transitions. [2024-06-27 18:25:12,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 135 transitions, 1080 flow [2024-06-27 18:25:12,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 1024 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:12,780 INFO L231 Difference]: Finished difference. Result has 89 places, 97 transitions, 712 flow [2024-06-27 18:25:12,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=712, PETRI_PLACES=89, PETRI_TRANSITIONS=97} [2024-06-27 18:25:12,780 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-06-27 18:25:12,780 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 97 transitions, 712 flow [2024-06-27 18:25:12,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:12,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:12,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:12,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:25:12,781 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:12,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1112570295, now seen corresponding path program 1 times [2024-06-27 18:25:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095219800] [2024-06-27 18:25:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:13,371 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 18:25:13,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:13,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095219800] [2024-06-27 18:25:13,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095219800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:13,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:13,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:13,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744526117] [2024-06-27 18:25:13,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:13,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:13,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:13,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:13,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:13,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:13,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 97 transitions, 712 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:13,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:13,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:13,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:14,349 INFO L124 PetriNetUnfolderBase]: 4747/7530 cut-off events. [2024-06-27 18:25:14,349 INFO L125 PetriNetUnfolderBase]: For 36064/36073 co-relation queries the response was YES. [2024-06-27 18:25:14,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27429 conditions, 7530 events. 4747/7530 cut-off events. For 36064/36073 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 45908 event pairs, 1550 based on Foata normal form. 8/7306 useless extension candidates. Maximal degree in co-relation 27393. Up to 6417 conditions per place. [2024-06-27 18:25:14,399 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 126 selfloop transitions, 31 changer transitions 0/165 dead transitions. [2024-06-27 18:25:14,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 165 transitions, 1408 flow [2024-06-27 18:25:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:14,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 176 transitions. [2024-06-27 18:25:14,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349544072948328 [2024-06-27 18:25:14,401 INFO L175 Difference]: Start difference. First operand has 89 places, 97 transitions, 712 flow. Second operand 7 states and 176 transitions. [2024-06-27 18:25:14,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 165 transitions, 1408 flow [2024-06-27 18:25:14,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 165 transitions, 1358 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:14,432 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 928 flow [2024-06-27 18:25:14,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=928, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2024-06-27 18:25:14,433 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-06-27 18:25:14,433 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 928 flow [2024-06-27 18:25:14,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:14,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:14,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:14,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:25:14,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:14,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:14,434 INFO L85 PathProgramCache]: Analyzing trace with hash 208542135, now seen corresponding path program 2 times [2024-06-27 18:25:14,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:14,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354372635] [2024-06-27 18:25:14,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:14,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:14,927 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 18:25:14,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:14,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354372635] [2024-06-27 18:25:14,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354372635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:14,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:14,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:14,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317589985] [2024-06-27 18:25:14,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:14,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:14,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:14,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:14,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:14,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:14,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 928 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:14,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:14,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:14,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:15,904 INFO L124 PetriNetUnfolderBase]: 4831/7824 cut-off events. [2024-06-27 18:25:15,905 INFO L125 PetriNetUnfolderBase]: For 47343/47343 co-relation queries the response was YES. [2024-06-27 18:25:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31228 conditions, 7824 events. 4831/7824 cut-off events. For 47343/47343 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 49226 event pairs, 1814 based on Foata normal form. 6/7597 useless extension candidates. Maximal degree in co-relation 31187. Up to 6771 conditions per place. [2024-06-27 18:25:15,959 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 125 selfloop transitions, 26 changer transitions 0/159 dead transitions. [2024-06-27 18:25:15,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 159 transitions, 1452 flow [2024-06-27 18:25:15,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:15,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 18:25:15,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 18:25:15,961 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 928 flow. Second operand 7 states and 163 transitions. [2024-06-27 18:25:15,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 159 transitions, 1452 flow [2024-06-27 18:25:15,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 159 transitions, 1406 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-06-27 18:25:16,001 INFO L231 Difference]: Finished difference. Result has 105 places, 127 transitions, 1079 flow [2024-06-27 18:25:16,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1079, PETRI_PLACES=105, PETRI_TRANSITIONS=127} [2024-06-27 18:25:16,002 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 52 predicate places. [2024-06-27 18:25:16,002 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 127 transitions, 1079 flow [2024-06-27 18:25:16,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:16,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:16,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:16,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:25:16,003 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:16,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:16,003 INFO L85 PathProgramCache]: Analyzing trace with hash 78971107, now seen corresponding path program 3 times [2024-06-27 18:25:16,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:16,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085412240] [2024-06-27 18:25:16,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:16,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:16,543 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 18:25:16,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:16,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085412240] [2024-06-27 18:25:16,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085412240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:16,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:16,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:16,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504031614] [2024-06-27 18:25:16,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:16,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:16,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:16,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:16,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:16,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:16,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 127 transitions, 1079 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:16,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:16,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:16,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:17,527 INFO L124 PetriNetUnfolderBase]: 4487/7359 cut-off events. [2024-06-27 18:25:17,527 INFO L125 PetriNetUnfolderBase]: For 47356/47397 co-relation queries the response was YES. [2024-06-27 18:25:17,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29742 conditions, 7359 events. 4487/7359 cut-off events. For 47356/47397 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 46946 event pairs, 1634 based on Foata normal form. 4/7120 useless extension candidates. Maximal degree in co-relation 29695. Up to 6276 conditions per place. [2024-06-27 18:25:17,591 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 123 selfloop transitions, 16 changer transitions 0/158 dead transitions. [2024-06-27 18:25:17,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 158 transitions, 1441 flow [2024-06-27 18:25:17,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:17,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-06-27 18:25:17,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-06-27 18:25:17,593 INFO L175 Difference]: Start difference. First operand has 105 places, 127 transitions, 1079 flow. Second operand 7 states and 162 transitions. [2024-06-27 18:25:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 158 transitions, 1441 flow [2024-06-27 18:25:17,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 158 transitions, 1358 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:17,643 INFO L231 Difference]: Finished difference. Result has 109 places, 127 transitions, 1036 flow [2024-06-27 18:25:17,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=996, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1036, PETRI_PLACES=109, PETRI_TRANSITIONS=127} [2024-06-27 18:25:17,644 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 18:25:17,644 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 127 transitions, 1036 flow [2024-06-27 18:25:17,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 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 18:25:17,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:17,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:17,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:25:17,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:17,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1107928665, now seen corresponding path program 3 times [2024-06-27 18:25:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:17,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914343354] [2024-06-27 18:25:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:17,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:18,175 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 18:25:18,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:18,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914343354] [2024-06-27 18:25:18,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914343354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:18,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:18,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:25:18,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778055983] [2024-06-27 18:25:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:25:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:18,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:25:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:25:18,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:18,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 127 transitions, 1036 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:18,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:18,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:18,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:19,094 INFO L124 PetriNetUnfolderBase]: 4854/7847 cut-off events. [2024-06-27 18:25:19,094 INFO L125 PetriNetUnfolderBase]: For 53699/53699 co-relation queries the response was YES. [2024-06-27 18:25:19,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31881 conditions, 7847 events. 4854/7847 cut-off events. For 53699/53699 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 49213 event pairs, 1814 based on Foata normal form. 6/7622 useless extension candidates. Maximal degree in co-relation 31833. Up to 6664 conditions per place. [2024-06-27 18:25:19,153 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 130 selfloop transitions, 32 changer transitions 0/170 dead transitions. [2024-06-27 18:25:19,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 170 transitions, 1617 flow [2024-06-27 18:25:19,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:19,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:25:19,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:25:19,155 INFO L175 Difference]: Start difference. First operand has 109 places, 127 transitions, 1036 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:25:19,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 170 transitions, 1617 flow [2024-06-27 18:25:19,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 170 transitions, 1565 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:19,199 INFO L231 Difference]: Finished difference. Result has 111 places, 134 transitions, 1160 flow [2024-06-27 18:25:19,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1160, PETRI_PLACES=111, PETRI_TRANSITIONS=134} [2024-06-27 18:25:19,199 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 58 predicate places. [2024-06-27 18:25:19,200 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 134 transitions, 1160 flow [2024-06-27 18:25:19,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 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 18:25:19,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:19,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:19,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:25:19,201 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash 79247162, now seen corresponding path program 1 times [2024-06-27 18:25:19,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:19,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025629879] [2024-06-27 18:25:19,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:19,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:20,222 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 18:25:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025629879] [2024-06-27 18:25:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025629879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:20,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764269685] [2024-06-27 18:25:20,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:20,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:20,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:20,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 134 transitions, 1160 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:20,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:20,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:20,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:21,448 INFO L124 PetriNetUnfolderBase]: 4877/7910 cut-off events. [2024-06-27 18:25:21,449 INFO L125 PetriNetUnfolderBase]: For 61162/61162 co-relation queries the response was YES. [2024-06-27 18:25:21,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33074 conditions, 7910 events. 4877/7910 cut-off events. For 61162/61162 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 49981 event pairs, 1757 based on Foata normal form. 6/7676 useless extension candidates. Maximal degree in co-relation 33024. Up to 6755 conditions per place. [2024-06-27 18:25:21,500 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 135 selfloop transitions, 33 changer transitions 0/176 dead transitions. [2024-06-27 18:25:21,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 176 transitions, 1702 flow [2024-06-27 18:25:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:21,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:25:21,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:25:21,501 INFO L175 Difference]: Start difference. First operand has 111 places, 134 transitions, 1160 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:25:21,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 176 transitions, 1702 flow [2024-06-27 18:25:21,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 1642 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:21,547 INFO L231 Difference]: Finished difference. Result has 115 places, 137 transitions, 1220 flow [2024-06-27 18:25:21,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1220, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2024-06-27 18:25:21,548 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:25:21,548 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 1220 flow [2024-06-27 18:25:21,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:21,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:21,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:21,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:25:21,549 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:21,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:21,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1250500563, now seen corresponding path program 1 times [2024-06-27 18:25:21,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:21,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264291630] [2024-06-27 18:25:21,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:21,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:21,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:21,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:21,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:21,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264291630] [2024-06-27 18:25:21,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264291630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:21,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:21,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:25:21,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79232370] [2024-06-27 18:25:21,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:21,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:25:21,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:21,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:25:21,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:25:21,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:21,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 1220 flow. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 18:25:21,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:21,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:21,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:22,861 INFO L124 PetriNetUnfolderBase]: 4563/7565 cut-off events. [2024-06-27 18:25:22,862 INFO L125 PetriNetUnfolderBase]: For 63947/63947 co-relation queries the response was YES. [2024-06-27 18:25:22,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32100 conditions, 7565 events. 4563/7565 cut-off events. For 63947/63947 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 49090 event pairs, 1817 based on Foata normal form. 1/7333 useless extension candidates. Maximal degree in co-relation 32048. Up to 6455 conditions per place. [2024-06-27 18:25:22,919 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 118 selfloop transitions, 14 changer transitions 0/151 dead transitions. [2024-06-27 18:25:22,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 151 transitions, 1516 flow [2024-06-27 18:25:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:25:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:25:22,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-06-27 18:25:22,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-06-27 18:25:22,920 INFO L175 Difference]: Start difference. First operand has 115 places, 137 transitions, 1220 flow. Second operand 5 states and 114 transitions. [2024-06-27 18:25:22,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 151 transitions, 1516 flow [2024-06-27 18:25:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 151 transitions, 1408 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:22,965 INFO L231 Difference]: Finished difference. Result has 115 places, 137 transitions, 1150 flow [2024-06-27 18:25:22,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1112, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1150, PETRI_PLACES=115, PETRI_TRANSITIONS=137} [2024-06-27 18:25:22,966 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 18:25:22,966 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 137 transitions, 1150 flow [2024-06-27 18:25:22,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 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 18:25:22,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:22,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:22,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:25:22,966 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:22,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2046719451, now seen corresponding path program 1 times [2024-06-27 18:25:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:22,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147894439] [2024-06-27 18:25:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:22,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:23,793 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 18:25:23,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:23,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147894439] [2024-06-27 18:25:23,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147894439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:23,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:23,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60782319] [2024-06-27 18:25:23,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:23,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:23,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:23,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:23,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:23,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:23,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 137 transitions, 1150 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:23,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:23,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:23,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:25,065 INFO L124 PetriNetUnfolderBase]: 4485/7275 cut-off events. [2024-06-27 18:25:25,065 INFO L125 PetriNetUnfolderBase]: For 65754/65787 co-relation queries the response was YES. [2024-06-27 18:25:25,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31671 conditions, 7275 events. 4485/7275 cut-off events. For 65754/65787 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 45522 event pairs, 1397 based on Foata normal form. 7/7047 useless extension candidates. Maximal degree in co-relation 31618. Up to 6194 conditions per place. [2024-06-27 18:25:25,121 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 158 selfloop transitions, 21 changer transitions 0/201 dead transitions. [2024-06-27 18:25:25,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 201 transitions, 1739 flow [2024-06-27 18:25:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:25:25,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:25:25,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 18:25:25,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 18:25:25,123 INFO L175 Difference]: Start difference. First operand has 115 places, 137 transitions, 1150 flow. Second operand 9 states and 218 transitions. [2024-06-27 18:25:25,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 201 transitions, 1739 flow [2024-06-27 18:25:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 201 transitions, 1696 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:25,172 INFO L231 Difference]: Finished difference. Result has 121 places, 143 transitions, 1239 flow [2024-06-27 18:25:25,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1107, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1239, PETRI_PLACES=121, PETRI_TRANSITIONS=143} [2024-06-27 18:25:25,172 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 68 predicate places. [2024-06-27 18:25:25,172 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 143 transitions, 1239 flow [2024-06-27 18:25:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:25,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:25,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:25:25,173 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:25,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:25,173 INFO L85 PathProgramCache]: Analyzing trace with hash 361697120, now seen corresponding path program 1 times [2024-06-27 18:25:25,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654341879] [2024-06-27 18:25:25,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:25,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:25,814 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 18:25:25,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654341879] [2024-06-27 18:25:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654341879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918682285] [2024-06-27 18:25:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:25,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:25,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:25,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:25,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:25,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 143 transitions, 1239 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:25,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:25,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:25,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:26,949 INFO L124 PetriNetUnfolderBase]: 5051/7996 cut-off events. [2024-06-27 18:25:26,949 INFO L125 PetriNetUnfolderBase]: For 78220/78220 co-relation queries the response was YES. [2024-06-27 18:25:26,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36049 conditions, 7996 events. 5051/7996 cut-off events. For 78220/78220 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 49053 event pairs, 1533 based on Foata normal form. 6/7757 useless extension candidates. Maximal degree in co-relation 35995. Up to 6980 conditions per place. [2024-06-27 18:25:27,013 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 169 selfloop transitions, 29 changer transitions 0/206 dead transitions. [2024-06-27 18:25:27,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 206 transitions, 2013 flow [2024-06-27 18:25:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:27,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-06-27 18:25:27,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:25:27,014 INFO L175 Difference]: Start difference. First operand has 121 places, 143 transitions, 1239 flow. Second operand 8 states and 196 transitions. [2024-06-27 18:25:27,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 206 transitions, 2013 flow [2024-06-27 18:25:27,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 206 transitions, 1938 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:27,075 INFO L231 Difference]: Finished difference. Result has 125 places, 154 transitions, 1388 flow [2024-06-27 18:25:27,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1388, PETRI_PLACES=125, PETRI_TRANSITIONS=154} [2024-06-27 18:25:27,076 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-06-27 18:25:27,076 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 154 transitions, 1388 flow [2024-06-27 18:25:27,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:27,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:25:27,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 365416035, now seen corresponding path program 2 times [2024-06-27 18:25:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:27,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201742583] [2024-06-27 18:25:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:27,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:27,802 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 18:25:27,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:27,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201742583] [2024-06-27 18:25:27,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201742583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357303002] [2024-06-27 18:25:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:27,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:27,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:27,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 154 transitions, 1388 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:27,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:27,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:27,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:28,820 INFO L124 PetriNetUnfolderBase]: 4698/7086 cut-off events. [2024-06-27 18:25:28,820 INFO L125 PetriNetUnfolderBase]: For 90307/90344 co-relation queries the response was YES. [2024-06-27 18:25:28,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 7086 events. 4698/7086 cut-off events. For 90307/90344 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 40319 event pairs, 1198 based on Foata normal form. 15/7027 useless extension candidates. Maximal degree in co-relation 35908. Up to 6332 conditions per place. [2024-06-27 18:25:28,880 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 139 selfloop transitions, 49 changer transitions 0/213 dead transitions. [2024-06-27 18:25:28,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 213 transitions, 2158 flow [2024-06-27 18:25:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:28,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-06-27 18:25:28,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-06-27 18:25:28,882 INFO L175 Difference]: Start difference. First operand has 125 places, 154 transitions, 1388 flow. Second operand 8 states and 194 transitions. [2024-06-27 18:25:28,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 213 transitions, 2158 flow [2024-06-27 18:25:28,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 213 transitions, 2029 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:28,953 INFO L231 Difference]: Finished difference. Result has 130 places, 167 transitions, 1648 flow [2024-06-27 18:25:28,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1648, PETRI_PLACES=130, PETRI_TRANSITIONS=167} [2024-06-27 18:25:28,953 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-27 18:25:28,953 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 167 transitions, 1648 flow [2024-06-27 18:25:28,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:28,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:28,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:28,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:25:28,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:28,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:28,954 INFO L85 PathProgramCache]: Analyzing trace with hash 365416190, now seen corresponding path program 2 times [2024-06-27 18:25:28,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:28,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83421175] [2024-06-27 18:25:28,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:28,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:29,608 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 18:25:29,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83421175] [2024-06-27 18:25:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83421175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:29,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638986907] [2024-06-27 18:25:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:29,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:29,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:29,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:29,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:29,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:29,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 167 transitions, 1648 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:29,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:29,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:29,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:30,756 INFO L124 PetriNetUnfolderBase]: 5352/8396 cut-off events. [2024-06-27 18:25:30,757 INFO L125 PetriNetUnfolderBase]: For 111478/111490 co-relation queries the response was YES. [2024-06-27 18:25:30,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42111 conditions, 8396 events. 5352/8396 cut-off events. For 111478/111490 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 51167 event pairs, 1518 based on Foata normal form. 9/8167 useless extension candidates. Maximal degree in co-relation 42052. Up to 6614 conditions per place. [2024-06-27 18:25:30,828 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 168 selfloop transitions, 59 changer transitions 0/235 dead transitions. [2024-06-27 18:25:30,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 235 transitions, 2722 flow [2024-06-27 18:25:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:30,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:30,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-06-27 18:25:30,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5452127659574468 [2024-06-27 18:25:30,829 INFO L175 Difference]: Start difference. First operand has 130 places, 167 transitions, 1648 flow. Second operand 8 states and 205 transitions. [2024-06-27 18:25:30,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 235 transitions, 2722 flow [2024-06-27 18:25:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 235 transitions, 2531 flow, removed 89 selfloop flow, removed 2 redundant places. [2024-06-27 18:25:30,963 INFO L231 Difference]: Finished difference. Result has 137 places, 178 transitions, 1757 flow [2024-06-27 18:25:30,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1757, PETRI_PLACES=137, PETRI_TRANSITIONS=178} [2024-06-27 18:25:30,963 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-06-27 18:25:30,963 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 178 transitions, 1757 flow [2024-06-27 18:25:30,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:30,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:30,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:30,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:25:30,964 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:30,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash 365421770, now seen corresponding path program 3 times [2024-06-27 18:25:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730716237] [2024-06-27 18:25:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:31,591 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 18:25:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:31,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730716237] [2024-06-27 18:25:31,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730716237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:31,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:31,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:31,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012149812] [2024-06-27 18:25:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:31,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:31,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:31,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:31,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:31,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 178 transitions, 1757 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:31,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:31,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:31,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:32,765 INFO L124 PetriNetUnfolderBase]: 5380/8434 cut-off events. [2024-06-27 18:25:32,765 INFO L125 PetriNetUnfolderBase]: For 124333/124345 co-relation queries the response was YES. [2024-06-27 18:25:32,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44325 conditions, 8434 events. 5380/8434 cut-off events. For 124333/124345 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 51391 event pairs, 1504 based on Foata normal form. 9/8205 useless extension candidates. Maximal degree in co-relation 44263. Up to 6643 conditions per place. [2024-06-27 18:25:32,841 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 161 selfloop transitions, 67 changer transitions 0/236 dead transitions. [2024-06-27 18:25:32,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 236 transitions, 2658 flow [2024-06-27 18:25:32,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:32,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:32,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-06-27 18:25:32,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398936170212766 [2024-06-27 18:25:32,842 INFO L175 Difference]: Start difference. First operand has 137 places, 178 transitions, 1757 flow. Second operand 8 states and 203 transitions. [2024-06-27 18:25:32,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 236 transitions, 2658 flow [2024-06-27 18:25:32,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 236 transitions, 2520 flow, removed 51 selfloop flow, removed 3 redundant places. [2024-06-27 18:25:32,968 INFO L231 Difference]: Finished difference. Result has 142 places, 182 transitions, 1841 flow [2024-06-27 18:25:32,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1635, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1841, PETRI_PLACES=142, PETRI_TRANSITIONS=182} [2024-06-27 18:25:32,969 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2024-06-27 18:25:32,969 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 182 transitions, 1841 flow [2024-06-27 18:25:32,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:32,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:32,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:32,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:25:32,969 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:32,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash 554942124, now seen corresponding path program 4 times [2024-06-27 18:25:32,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:32,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261666177] [2024-06-27 18:25:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:32,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:33,532 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 18:25:33,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:33,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261666177] [2024-06-27 18:25:33,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261666177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:33,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:33,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:33,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513644295] [2024-06-27 18:25:33,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:33,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:33,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:33,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:33,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:33,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 182 transitions, 1841 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:33,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:33,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:33,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:34,910 INFO L124 PetriNetUnfolderBase]: 5560/8496 cut-off events. [2024-06-27 18:25:34,910 INFO L125 PetriNetUnfolderBase]: For 138170/138170 co-relation queries the response was YES. [2024-06-27 18:25:34,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46577 conditions, 8496 events. 5560/8496 cut-off events. For 138170/138170 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50847 event pairs, 1839 based on Foata normal form. 6/8351 useless extension candidates. Maximal degree in co-relation 46513. Up to 7327 conditions per place. [2024-06-27 18:25:34,974 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 188 selfloop transitions, 43 changer transitions 0/239 dead transitions. [2024-06-27 18:25:34,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 239 transitions, 2857 flow [2024-06-27 18:25:34,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:34,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:34,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 18:25:34,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 18:25:34,975 INFO L175 Difference]: Start difference. First operand has 142 places, 182 transitions, 1841 flow. Second operand 8 states and 195 transitions. [2024-06-27 18:25:34,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 239 transitions, 2857 flow [2024-06-27 18:25:35,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 239 transitions, 2696 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:35,092 INFO L231 Difference]: Finished difference. Result has 147 places, 191 transitions, 1991 flow [2024-06-27 18:25:35,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1692, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1991, PETRI_PLACES=147, PETRI_TRANSITIONS=191} [2024-06-27 18:25:35,093 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-06-27 18:25:35,093 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 191 transitions, 1991 flow [2024-06-27 18:25:35,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:35,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:35,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:35,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:25:35,094 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:35,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:35,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1846861122, now seen corresponding path program 5 times [2024-06-27 18:25:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:35,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390407221] [2024-06-27 18:25:35,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:35,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:35,653 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 18:25:35,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:35,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390407221] [2024-06-27 18:25:35,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390407221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008859908] [2024-06-27 18:25:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:35,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:35,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:35,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:35,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:35,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 191 transitions, 1991 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:35,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:35,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:35,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:36,926 INFO L124 PetriNetUnfolderBase]: 5548/8490 cut-off events. [2024-06-27 18:25:36,926 INFO L125 PetriNetUnfolderBase]: For 148787/148787 co-relation queries the response was YES. [2024-06-27 18:25:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46953 conditions, 8490 events. 5548/8490 cut-off events. For 148787/148787 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 50918 event pairs, 1832 based on Foata normal form. 6/8341 useless extension candidates. Maximal degree in co-relation 46886. Up to 7321 conditions per place. [2024-06-27 18:25:36,997 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 188 selfloop transitions, 42 changer transitions 0/238 dead transitions. [2024-06-27 18:25:36,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 238 transitions, 2795 flow [2024-06-27 18:25:36,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:36,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 18:25:36,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 18:25:36,998 INFO L175 Difference]: Start difference. First operand has 147 places, 191 transitions, 1991 flow. Second operand 8 states and 193 transitions. [2024-06-27 18:25:36,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 238 transitions, 2795 flow [2024-06-27 18:25:37,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 238 transitions, 2587 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:37,148 INFO L231 Difference]: Finished difference. Result has 150 places, 191 transitions, 1877 flow [2024-06-27 18:25:37,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1877, PETRI_PLACES=150, PETRI_TRANSITIONS=191} [2024-06-27 18:25:37,149 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 97 predicate places. [2024-06-27 18:25:37,149 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 191 transitions, 1877 flow [2024-06-27 18:25:37,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:37,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:37,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:37,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:25:37,149 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:37,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1846861277, now seen corresponding path program 3 times [2024-06-27 18:25:37,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:37,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182220572] [2024-06-27 18:25:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:37,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:37,799 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 18:25:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:37,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182220572] [2024-06-27 18:25:37,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182220572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:37,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:37,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:37,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745933091] [2024-06-27 18:25:37,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:37,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:37,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:37,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:37,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:37,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:37,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 191 transitions, 1877 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:37,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:37,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:37,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:38,984 INFO L124 PetriNetUnfolderBase]: 5185/8154 cut-off events. [2024-06-27 18:25:38,985 INFO L125 PetriNetUnfolderBase]: For 144751/144779 co-relation queries the response was YES. [2024-06-27 18:25:39,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44333 conditions, 8154 events. 5185/8154 cut-off events. For 144751/144779 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 50591 event pairs, 1693 based on Foata normal form. 7/7977 useless extension candidates. Maximal degree in co-relation 44265. Up to 7070 conditions per place. [2024-06-27 18:25:39,059 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 178 selfloop transitions, 29 changer transitions 0/238 dead transitions. [2024-06-27 18:25:39,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 238 transitions, 2511 flow [2024-06-27 18:25:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:39,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:39,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 18:25:39,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 18:25:39,060 INFO L175 Difference]: Start difference. First operand has 150 places, 191 transitions, 1877 flow. Second operand 8 states and 187 transitions. [2024-06-27 18:25:39,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 238 transitions, 2511 flow [2024-06-27 18:25:39,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 238 transitions, 2423 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:39,196 INFO L231 Difference]: Finished difference. Result has 153 places, 197 transitions, 1980 flow [2024-06-27 18:25:39,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1980, PETRI_PLACES=153, PETRI_TRANSITIONS=197} [2024-06-27 18:25:39,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 18:25:39,197 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 197 transitions, 1980 flow [2024-06-27 18:25:39,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 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 18:25:39,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:39,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:39,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:25:39,198 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:39,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:39,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1838314205, now seen corresponding path program 1 times [2024-06-27 18:25:39,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:39,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889574209] [2024-06-27 18:25:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:39,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:39,925 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 18:25:39,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:39,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889574209] [2024-06-27 18:25:39,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889574209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:39,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:39,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:39,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534840957] [2024-06-27 18:25:39,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:39,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:39,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:39,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:39,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:39,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:39,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 197 transitions, 1980 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:39,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:39,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:39,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:41,221 INFO L124 PetriNetUnfolderBase]: 5577/8557 cut-off events. [2024-06-27 18:25:41,221 INFO L125 PetriNetUnfolderBase]: For 161611/161611 co-relation queries the response was YES. [2024-06-27 18:25:41,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47489 conditions, 8557 events. 5577/8557 cut-off events. For 161611/161611 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 51701 event pairs, 1823 based on Foata normal form. 3/8399 useless extension candidates. Maximal degree in co-relation 47419. Up to 7686 conditions per place. [2024-06-27 18:25:41,298 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 193 selfloop transitions, 38 changer transitions 0/239 dead transitions. [2024-06-27 18:25:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 239 transitions, 2678 flow [2024-06-27 18:25:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:25:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:25:41,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-06-27 18:25:41,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075987841945289 [2024-06-27 18:25:41,300 INFO L175 Difference]: Start difference. First operand has 153 places, 197 transitions, 1980 flow. Second operand 7 states and 167 transitions. [2024-06-27 18:25:41,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 239 transitions, 2678 flow [2024-06-27 18:25:41,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 239 transitions, 2523 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:41,571 INFO L231 Difference]: Finished difference. Result has 155 places, 201 transitions, 2001 flow [2024-06-27 18:25:41,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2001, PETRI_PLACES=155, PETRI_TRANSITIONS=201} [2024-06-27 18:25:41,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 102 predicate places. [2024-06-27 18:25:41,572 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 201 transitions, 2001 flow [2024-06-27 18:25:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:41,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:41,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:41,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:25:41,572 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:41,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:41,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1838610162, now seen corresponding path program 6 times [2024-06-27 18:25:41,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:41,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389391008] [2024-06-27 18:25:41,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:41,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:42,108 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 18:25:42,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:42,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389391008] [2024-06-27 18:25:42,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389391008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:42,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:42,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:25:42,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877380606] [2024-06-27 18:25:42,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:42,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:25:42,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:42,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:25:42,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:25:42,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:42,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 201 transitions, 2001 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:42,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:42,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:42,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:43,473 INFO L124 PetriNetUnfolderBase]: 5605/8570 cut-off events. [2024-06-27 18:25:43,473 INFO L125 PetriNetUnfolderBase]: For 169848/169848 co-relation queries the response was YES. [2024-06-27 18:25:43,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48730 conditions, 8570 events. 5605/8570 cut-off events. For 169848/169848 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 51445 event pairs, 1851 based on Foata normal form. 6/8422 useless extension candidates. Maximal degree in co-relation 48659. Up to 7765 conditions per place. [2024-06-27 18:25:43,543 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 207 selfloop transitions, 30 changer transitions 0/245 dead transitions. [2024-06-27 18:25:43,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 245 transitions, 2707 flow [2024-06-27 18:25:43,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:43,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 18:25:43,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 18:25:43,544 INFO L175 Difference]: Start difference. First operand has 155 places, 201 transitions, 2001 flow. Second operand 8 states and 186 transitions. [2024-06-27 18:25:43,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 245 transitions, 2707 flow [2024-06-27 18:25:43,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 245 transitions, 2583 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-27 18:25:43,704 INFO L231 Difference]: Finished difference. Result has 158 places, 205 transitions, 2028 flow [2024-06-27 18:25:43,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2028, PETRI_PLACES=158, PETRI_TRANSITIONS=205} [2024-06-27 18:25:43,705 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 18:25:43,705 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 205 transitions, 2028 flow [2024-06-27 18:25:43,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 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 18:25:43,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:43,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:43,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:25:43,705 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:43,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -110809836, now seen corresponding path program 1 times [2024-06-27 18:25:43,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:43,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445464213] [2024-06-27 18:25:43,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:43,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:44,149 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 18:25:44,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:44,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445464213] [2024-06-27 18:25:44,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445464213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:44,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:25:44,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92257365] [2024-06-27 18:25:44,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:25:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:44,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:25:44,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:25:44,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:44,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 205 transitions, 2028 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:25:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:44,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:44,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:45,506 INFO L124 PetriNetUnfolderBase]: 5219/7973 cut-off events. [2024-06-27 18:25:45,506 INFO L125 PetriNetUnfolderBase]: For 174238/174322 co-relation queries the response was YES. [2024-06-27 18:25:45,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45861 conditions, 7973 events. 5219/7973 cut-off events. For 174238/174322 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 47505 event pairs, 1777 based on Foata normal form. 43/7830 useless extension candidates. Maximal degree in co-relation 45789. Up to 7264 conditions per place. [2024-06-27 18:25:45,593 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 190 selfloop transitions, 17 changer transitions 0/229 dead transitions. [2024-06-27 18:25:45,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 229 transitions, 2522 flow [2024-06-27 18:25:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:25:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:25:45,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:25:45,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:25:45,594 INFO L175 Difference]: Start difference. First operand has 158 places, 205 transitions, 2028 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:25:45,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 229 transitions, 2522 flow [2024-06-27 18:25:45,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 229 transitions, 2413 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:45,742 INFO L231 Difference]: Finished difference. Result has 158 places, 208 transitions, 1994 flow [2024-06-27 18:25:45,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1994, PETRI_PLACES=158, PETRI_TRANSITIONS=208} [2024-06-27 18:25:45,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 105 predicate places. [2024-06-27 18:25:45,743 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 208 transitions, 1994 flow [2024-06-27 18:25:45,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:25:45,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:45,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:45,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:25:45,744 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:45,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:45,744 INFO L85 PathProgramCache]: Analyzing trace with hash 148530828, now seen corresponding path program 1 times [2024-06-27 18:25:45,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:45,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183350573] [2024-06-27 18:25:45,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:45,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:46,656 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 18:25:46,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:46,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183350573] [2024-06-27 18:25:46,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183350573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:46,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:46,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:46,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337980229] [2024-06-27 18:25:46,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:46,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:46,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:46,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:46,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:46,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:46,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 208 transitions, 1994 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:25:46,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:46,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:46,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:48,081 INFO L124 PetriNetUnfolderBase]: 5254/8208 cut-off events. [2024-06-27 18:25:48,081 INFO L125 PetriNetUnfolderBase]: For 186516/186556 co-relation queries the response was YES. [2024-06-27 18:25:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48306 conditions, 8208 events. 5254/8208 cut-off events. For 186516/186556 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 50640 event pairs, 1118 based on Foata normal form. 9/8041 useless extension candidates. Maximal degree in co-relation 48233. Up to 7020 conditions per place. [2024-06-27 18:25:48,151 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 225 selfloop transitions, 26 changer transitions 0/284 dead transitions. [2024-06-27 18:25:48,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 284 transitions, 2958 flow [2024-06-27 18:25:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 245 transitions. [2024-06-27 18:25:48,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-06-27 18:25:48,152 INFO L175 Difference]: Start difference. First operand has 158 places, 208 transitions, 1994 flow. Second operand 10 states and 245 transitions. [2024-06-27 18:25:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 284 transitions, 2958 flow [2024-06-27 18:25:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 284 transitions, 2905 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 18:25:48,308 INFO L231 Difference]: Finished difference. Result has 165 places, 214 transitions, 2174 flow [2024-06-27 18:25:48,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1941, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2174, PETRI_PLACES=165, PETRI_TRANSITIONS=214} [2024-06-27 18:25:48,309 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-06-27 18:25:48,309 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 214 transitions, 2174 flow [2024-06-27 18:25:48,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:25:48,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:48,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:48,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:25:48,310 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:48,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -976204726, now seen corresponding path program 2 times [2024-06-27 18:25:48,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:48,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308107909] [2024-06-27 18:25:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:48,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:49,166 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 18:25:49,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:49,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308107909] [2024-06-27 18:25:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308107909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:49,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:49,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:49,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859467691] [2024-06-27 18:25:49,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:49,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:49,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:49,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:49,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:49,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:25:49,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 214 transitions, 2174 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:25:49,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:49,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:25:49,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:50,715 INFO L124 PetriNetUnfolderBase]: 5243/8187 cut-off events. [2024-06-27 18:25:50,715 INFO L125 PetriNetUnfolderBase]: For 196731/196771 co-relation queries the response was YES. [2024-06-27 18:25:50,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48736 conditions, 8187 events. 5243/8187 cut-off events. For 196731/196771 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 50545 event pairs, 1388 based on Foata normal form. 9/8022 useless extension candidates. Maximal degree in co-relation 48661. Up to 7098 conditions per place. [2024-06-27 18:25:50,792 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 225 selfloop transitions, 23 changer transitions 0/281 dead transitions. [2024-06-27 18:25:50,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 281 transitions, 2862 flow [2024-06-27 18:25:50,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:50,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:50,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2024-06-27 18:25:50,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127659574468085 [2024-06-27 18:25:50,794 INFO L175 Difference]: Start difference. First operand has 165 places, 214 transitions, 2174 flow. Second operand 10 states and 241 transitions. [2024-06-27 18:25:50,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 281 transitions, 2862 flow [2024-06-27 18:25:51,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 281 transitions, 2694 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:51,008 INFO L231 Difference]: Finished difference. Result has 169 places, 214 transitions, 2059 flow [2024-06-27 18:25:51,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2006, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2059, PETRI_PLACES=169, PETRI_TRANSITIONS=214} [2024-06-27 18:25:51,009 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 18:25:51,009 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 214 transitions, 2059 flow [2024-06-27 18:25:51,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:25:51,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:51,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:51,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:25:51,010 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:51,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:51,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1675090626, now seen corresponding path program 1 times [2024-06-27 18:25:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:51,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182872198] [2024-06-27 18:25:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:51,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:51,822 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 18:25:51,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:51,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182872198] [2024-06-27 18:25:51,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182872198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:51,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:51,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:51,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17891895] [2024-06-27 18:25:51,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:51,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:51,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:51,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:51,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:51,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:51,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 214 transitions, 2059 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:51,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:51,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:51,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:53,525 INFO L124 PetriNetUnfolderBase]: 5827/8894 cut-off events. [2024-06-27 18:25:53,526 INFO L125 PetriNetUnfolderBase]: For 208118/208118 co-relation queries the response was YES. [2024-06-27 18:25:53,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52128 conditions, 8894 events. 5827/8894 cut-off events. For 208118/208118 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 53322 event pairs, 1516 based on Foata normal form. 6/8721 useless extension candidates. Maximal degree in co-relation 52051. Up to 7828 conditions per place. [2024-06-27 18:25:53,611 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 256 selfloop transitions, 44 changer transitions 0/308 dead transitions. [2024-06-27 18:25:53,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 308 transitions, 3383 flow [2024-06-27 18:25:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:53,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 273 transitions. [2024-06-27 18:25:53,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.528046421663443 [2024-06-27 18:25:53,613 INFO L175 Difference]: Start difference. First operand has 169 places, 214 transitions, 2059 flow. Second operand 11 states and 273 transitions. [2024-06-27 18:25:53,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 308 transitions, 3383 flow [2024-06-27 18:25:53,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 308 transitions, 3338 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:53,811 INFO L231 Difference]: Finished difference. Result has 174 places, 225 transitions, 2337 flow [2024-06-27 18:25:53,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2337, PETRI_PLACES=174, PETRI_TRANSITIONS=225} [2024-06-27 18:25:53,812 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 121 predicate places. [2024-06-27 18:25:53,812 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 225 transitions, 2337 flow [2024-06-27 18:25:53,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:53,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:53,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:53,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:25:53,813 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:53,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1556818372, now seen corresponding path program 1 times [2024-06-27 18:25:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26030881] [2024-06-27 18:25:53,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:54,728 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 18:25:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:54,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26030881] [2024-06-27 18:25:54,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26030881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:54,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:54,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:54,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610776366] [2024-06-27 18:25:54,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:54,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:54,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:54,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 225 transitions, 2337 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:54,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:54,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:54,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:56,312 INFO L124 PetriNetUnfolderBase]: 5895/8857 cut-off events. [2024-06-27 18:25:56,313 INFO L125 PetriNetUnfolderBase]: For 234611/234623 co-relation queries the response was YES. [2024-06-27 18:25:56,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54905 conditions, 8857 events. 5895/8857 cut-off events. For 234611/234623 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 52237 event pairs, 1393 based on Foata normal form. 9/8722 useless extension candidates. Maximal degree in co-relation 54825. Up to 7895 conditions per place. [2024-06-27 18:25:56,407 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 226 selfloop transitions, 45 changer transitions 0/279 dead transitions. [2024-06-27 18:25:56,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 279 transitions, 3287 flow [2024-06-27 18:25:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:25:56,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:25:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 18:25:56,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 18:25:56,408 INFO L175 Difference]: Start difference. First operand has 174 places, 225 transitions, 2337 flow. Second operand 8 states and 198 transitions. [2024-06-27 18:25:56,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 279 transitions, 3287 flow [2024-06-27 18:25:56,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 279 transitions, 3122 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:56,690 INFO L231 Difference]: Finished difference. Result has 176 places, 228 transitions, 2358 flow [2024-06-27 18:25:56,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2172, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2358, PETRI_PLACES=176, PETRI_TRANSITIONS=228} [2024-06-27 18:25:56,691 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 123 predicate places. [2024-06-27 18:25:56,691 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 228 transitions, 2358 flow [2024-06-27 18:25:56,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:56,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:56,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:56,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:25:56,692 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:56,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:56,692 INFO L85 PathProgramCache]: Analyzing trace with hash 266856712, now seen corresponding path program 2 times [2024-06-27 18:25:56,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:56,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867978901] [2024-06-27 18:25:56,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:56,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:57,486 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 18:25:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867978901] [2024-06-27 18:25:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867978901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:57,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:57,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:25:57,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574416753] [2024-06-27 18:25:57,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:57,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:25:57,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:25:57,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:25:57,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:25:57,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 228 transitions, 2358 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:57,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:57,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:25:57,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:59,149 INFO L124 PetriNetUnfolderBase]: 6069/8859 cut-off events. [2024-06-27 18:25:59,150 INFO L125 PetriNetUnfolderBase]: For 251449/251461 co-relation queries the response was YES. [2024-06-27 18:25:59,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57341 conditions, 8859 events. 6069/8859 cut-off events. For 251449/251461 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 49743 event pairs, 1127 based on Foata normal form. 9/8812 useless extension candidates. Maximal degree in co-relation 57259. Up to 7068 conditions per place. [2024-06-27 18:25:59,227 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 199 selfloop transitions, 117 changer transitions 0/324 dead transitions. [2024-06-27 18:25:59,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 324 transitions, 4088 flow [2024-06-27 18:25:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:25:59,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:25:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-27 18:25:59,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404255319148936 [2024-06-27 18:25:59,229 INFO L175 Difference]: Start difference. First operand has 176 places, 228 transitions, 2358 flow. Second operand 10 states and 254 transitions. [2024-06-27 18:25:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 324 transitions, 4088 flow [2024-06-27 18:25:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 324 transitions, 3926 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 18:25:59,531 INFO L231 Difference]: Finished difference. Result has 183 places, 250 transitions, 3088 flow [2024-06-27 18:25:59,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2196, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3088, PETRI_PLACES=183, PETRI_TRANSITIONS=250} [2024-06-27 18:25:59,531 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 130 predicate places. [2024-06-27 18:25:59,531 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 250 transitions, 3088 flow [2024-06-27 18:25:59,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:25:59,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:59,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:59,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:25:59,532 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:25:59,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 266683732, now seen corresponding path program 3 times [2024-06-27 18:25:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:59,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322962316] [2024-06-27 18:25:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:59,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:00,325 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 18:26:00,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:00,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322962316] [2024-06-27 18:26:00,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322962316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:00,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:00,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:00,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413735332] [2024-06-27 18:26:00,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:00,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:00,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:00,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:00,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:00,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:00,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 250 transitions, 3088 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:00,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:00,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:00,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:01,973 INFO L124 PetriNetUnfolderBase]: 6188/9024 cut-off events. [2024-06-27 18:26:01,974 INFO L125 PetriNetUnfolderBase]: For 281702/281711 co-relation queries the response was YES. [2024-06-27 18:26:02,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62317 conditions, 9024 events. 6188/9024 cut-off events. For 281702/281711 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 50662 event pairs, 1145 based on Foata normal form. 8/8976 useless extension candidates. Maximal degree in co-relation 62231. Up to 7214 conditions per place. [2024-06-27 18:26:02,077 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 211 selfloop transitions, 118 changer transitions 0/337 dead transitions. [2024-06-27 18:26:02,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 337 transitions, 4720 flow [2024-06-27 18:26:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-06-27 18:26:02,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425531914893617 [2024-06-27 18:26:02,078 INFO L175 Difference]: Start difference. First operand has 183 places, 250 transitions, 3088 flow. Second operand 10 states and 255 transitions. [2024-06-27 18:26:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 337 transitions, 4720 flow [2024-06-27 18:26:02,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 337 transitions, 4304 flow, removed 199 selfloop flow, removed 2 redundant places. [2024-06-27 18:26:02,740 INFO L231 Difference]: Finished difference. Result has 194 places, 263 transitions, 3337 flow [2024-06-27 18:26:02,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2768, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3337, PETRI_PLACES=194, PETRI_TRANSITIONS=263} [2024-06-27 18:26:02,740 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-06-27 18:26:02,740 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 263 transitions, 3337 flow [2024-06-27 18:26:02,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:02,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:02,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:02,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:26:02,741 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:02,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:02,742 INFO L85 PathProgramCache]: Analyzing trace with hash -971620756, now seen corresponding path program 3 times [2024-06-27 18:26:02,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:02,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501572905] [2024-06-27 18:26:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:02,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:03,500 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 18:26:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501572905] [2024-06-27 18:26:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501572905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008963260] [2024-06-27 18:26:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:03,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:03,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:03,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 263 transitions, 3337 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:26:03,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:03,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:03,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:05,068 INFO L124 PetriNetUnfolderBase]: 5822/8687 cut-off events. [2024-06-27 18:26:05,068 INFO L125 PetriNetUnfolderBase]: For 268943/268999 co-relation queries the response was YES. [2024-06-27 18:26:05,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59686 conditions, 8687 events. 5822/8687 cut-off events. For 268943/268999 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 50424 event pairs, 1175 based on Foata normal form. 13/8618 useless extension candidates. Maximal degree in co-relation 59595. Up to 7696 conditions per place. [2024-06-27 18:26:05,164 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 221 selfloop transitions, 53 changer transitions 0/319 dead transitions. [2024-06-27 18:26:05,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 319 transitions, 4125 flow [2024-06-27 18:26:05,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:05,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:26:05,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 18:26:05,165 INFO L175 Difference]: Start difference. First operand has 194 places, 263 transitions, 3337 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:26:05,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 319 transitions, 4125 flow [2024-06-27 18:26:05,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 319 transitions, 3830 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:05,761 INFO L231 Difference]: Finished difference. Result has 198 places, 265 transitions, 3245 flow [2024-06-27 18:26:05,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3245, PETRI_PLACES=198, PETRI_TRANSITIONS=265} [2024-06-27 18:26:05,761 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 145 predicate places. [2024-06-27 18:26:05,761 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 265 transitions, 3245 flow [2024-06-27 18:26:05,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:26:05,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:05,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:05,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:26:05,762 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:05,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:05,762 INFO L85 PathProgramCache]: Analyzing trace with hash 31158230, now seen corresponding path program 4 times [2024-06-27 18:26:05,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:05,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580081612] [2024-06-27 18:26:05,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:05,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:06,564 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 18:26:06,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580081612] [2024-06-27 18:26:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580081612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:06,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:06,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:06,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744440302] [2024-06-27 18:26:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:06,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:06,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:06,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:06,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 265 transitions, 3245 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:06,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:06,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:06,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:08,217 INFO L124 PetriNetUnfolderBase]: 6414/9611 cut-off events. [2024-06-27 18:26:08,217 INFO L125 PetriNetUnfolderBase]: For 289516/289525 co-relation queries the response was YES. [2024-06-27 18:26:08,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63242 conditions, 9611 events. 6414/9611 cut-off events. For 289516/289525 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 57063 event pairs, 1440 based on Foata normal form. 8/9473 useless extension candidates. Maximal degree in co-relation 63150. Up to 7661 conditions per place. [2024-06-27 18:26:08,328 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 259 selfloop transitions, 88 changer transitions 0/355 dead transitions. [2024-06-27 18:26:08,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 355 transitions, 4731 flow [2024-06-27 18:26:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:08,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-27 18:26:08,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382978723404256 [2024-06-27 18:26:08,330 INFO L175 Difference]: Start difference. First operand has 198 places, 265 transitions, 3245 flow. Second operand 10 states and 253 transitions. [2024-06-27 18:26:08,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 355 transitions, 4731 flow [2024-06-27 18:26:08,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 355 transitions, 4541 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:08,699 INFO L231 Difference]: Finished difference. Result has 202 places, 282 transitions, 3522 flow [2024-06-27 18:26:08,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3522, PETRI_PLACES=202, PETRI_TRANSITIONS=282} [2024-06-27 18:26:08,700 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-27 18:26:08,700 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 282 transitions, 3522 flow [2024-06-27 18:26:08,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:08,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:08,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:08,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:26:08,701 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:08,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 331816905, now seen corresponding path program 1 times [2024-06-27 18:26:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210734164] [2024-06-27 18:26:08,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:09,229 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 18:26:09,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:09,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210734164] [2024-06-27 18:26:09,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210734164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:09,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:09,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:09,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646190633] [2024-06-27 18:26:09,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:09,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:09,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:09,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:09,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:09,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:09,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 282 transitions, 3522 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:26:09,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:09,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:09,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:10,863 INFO L124 PetriNetUnfolderBase]: 6048/9242 cut-off events. [2024-06-27 18:26:10,863 INFO L125 PetriNetUnfolderBase]: For 301248/301338 co-relation queries the response was YES. [2024-06-27 18:26:10,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62421 conditions, 9242 events. 6048/9242 cut-off events. For 301248/301338 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 56623 event pairs, 1566 based on Foata normal form. 44/9048 useless extension candidates. Maximal degree in co-relation 62327. Up to 8376 conditions per place. [2024-06-27 18:26:10,988 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 264 selfloop transitions, 24 changer transitions 0/313 dead transitions. [2024-06-27 18:26:10,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 313 transitions, 4338 flow [2024-06-27 18:26:10,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 18:26:10,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 18:26:10,989 INFO L175 Difference]: Start difference. First operand has 202 places, 282 transitions, 3522 flow. Second operand 6 states and 142 transitions. [2024-06-27 18:26:10,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 313 transitions, 4338 flow [2024-06-27 18:26:11,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 313 transitions, 4135 flow, removed 61 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:11,408 INFO L231 Difference]: Finished difference. Result has 203 places, 287 transitions, 3474 flow [2024-06-27 18:26:11,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3474, PETRI_PLACES=203, PETRI_TRANSITIONS=287} [2024-06-27 18:26:11,409 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-06-27 18:26:11,409 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 287 transitions, 3474 flow [2024-06-27 18:26:11,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:26:11,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:11,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:11,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:26:11,410 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:11,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:11,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1417938308, now seen corresponding path program 2 times [2024-06-27 18:26:11,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:11,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56134165] [2024-06-27 18:26:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:11,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:12,158 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 18:26:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56134165] [2024-06-27 18:26:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56134165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:12,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:12,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130887697] [2024-06-27 18:26:12,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:12,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:12,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:12,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:12,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 287 transitions, 3474 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:12,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:12,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:12,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:13,870 INFO L124 PetriNetUnfolderBase]: 6516/9836 cut-off events. [2024-06-27 18:26:13,870 INFO L125 PetriNetUnfolderBase]: For 316096/316096 co-relation queries the response was YES. [2024-06-27 18:26:13,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66225 conditions, 9836 events. 6516/9836 cut-off events. For 316096/316096 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59304 event pairs, 1859 based on Foata normal form. 6/9693 useless extension candidates. Maximal degree in co-relation 66129. Up to 8925 conditions per place. [2024-06-27 18:26:13,981 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 291 selfloop transitions, 35 changer transitions 0/334 dead transitions. [2024-06-27 18:26:13,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 334 transitions, 4490 flow [2024-06-27 18:26:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:26:13,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:26:13,982 INFO L175 Difference]: Start difference. First operand has 203 places, 287 transitions, 3474 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:26:13,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 334 transitions, 4490 flow [2024-06-27 18:26:14,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 334 transitions, 4435 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:26:14,362 INFO L231 Difference]: Finished difference. Result has 208 places, 290 transitions, 3601 flow [2024-06-27 18:26:14,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3419, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3601, PETRI_PLACES=208, PETRI_TRANSITIONS=290} [2024-06-27 18:26:14,362 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-27 18:26:14,363 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 290 transitions, 3601 flow [2024-06-27 18:26:14,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:14,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:14,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:14,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:26:14,363 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:14,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash 438751956, now seen corresponding path program 5 times [2024-06-27 18:26:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705412370] [2024-06-27 18:26:14,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:14,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:15,010 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 18:26:15,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:15,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705412370] [2024-06-27 18:26:15,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705412370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:15,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:15,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:15,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011253082] [2024-06-27 18:26:15,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:15,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:15,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:15,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:15,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:15,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:15,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 290 transitions, 3601 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:15,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:15,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:15,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:16,874 INFO L124 PetriNetUnfolderBase]: 6638/10035 cut-off events. [2024-06-27 18:26:16,874 INFO L125 PetriNetUnfolderBase]: For 342543/342543 co-relation queries the response was YES. [2024-06-27 18:26:16,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69021 conditions, 10035 events. 6638/10035 cut-off events. For 342543/342543 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 60914 event pairs, 1798 based on Foata normal form. 6/9883 useless extension candidates. Maximal degree in co-relation 68924. Up to 8963 conditions per place. [2024-06-27 18:26:16,993 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 298 selfloop transitions, 50 changer transitions 0/356 dead transitions. [2024-06-27 18:26:16,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 356 transitions, 4910 flow [2024-06-27 18:26:16,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:26:16,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 18:26:16,994 INFO L175 Difference]: Start difference. First operand has 208 places, 290 transitions, 3601 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:26:16,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 356 transitions, 4910 flow [2024-06-27 18:26:17,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 356 transitions, 4752 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:17,610 INFO L231 Difference]: Finished difference. Result has 212 places, 298 transitions, 3806 flow [2024-06-27 18:26:17,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3443, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3806, PETRI_PLACES=212, PETRI_TRANSITIONS=298} [2024-06-27 18:26:17,610 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 159 predicate places. [2024-06-27 18:26:17,610 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 298 transitions, 3806 flow [2024-06-27 18:26:17,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:17,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:17,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:17,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:26:17,611 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:17,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:17,611 INFO L85 PathProgramCache]: Analyzing trace with hash 438758900, now seen corresponding path program 3 times [2024-06-27 18:26:17,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:17,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583764507] [2024-06-27 18:26:17,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:17,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:18,483 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 18:26:18,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:18,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583764507] [2024-06-27 18:26:18,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583764507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:18,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:18,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:18,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247907370] [2024-06-27 18:26:18,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:18,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:18,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:18,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:18,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 298 transitions, 3806 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:18,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:18,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:18,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:20,305 INFO L124 PetriNetUnfolderBase]: 6706/10133 cut-off events. [2024-06-27 18:26:20,306 INFO L125 PetriNetUnfolderBase]: For 359713/359713 co-relation queries the response was YES. [2024-06-27 18:26:20,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70893 conditions, 10133 events. 6706/10133 cut-off events. For 359713/359713 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 61466 event pairs, 1930 based on Foata normal form. 6/9983 useless extension candidates. Maximal degree in co-relation 70794. Up to 9332 conditions per place. [2024-06-27 18:26:20,428 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 303 selfloop transitions, 31 changer transitions 0/342 dead transitions. [2024-06-27 18:26:20,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 342 transitions, 4788 flow [2024-06-27 18:26:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:20,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2024-06-27 18:26:20,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657210401891253 [2024-06-27 18:26:20,430 INFO L175 Difference]: Start difference. First operand has 212 places, 298 transitions, 3806 flow. Second operand 9 states and 197 transitions. [2024-06-27 18:26:20,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 342 transitions, 4788 flow [2024-06-27 18:26:20,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 342 transitions, 4558 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:20,921 INFO L231 Difference]: Finished difference. Result has 216 places, 303 transitions, 3791 flow [2024-06-27 18:26:20,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3791, PETRI_PLACES=216, PETRI_TRANSITIONS=303} [2024-06-27 18:26:20,922 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-06-27 18:26:20,922 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 303 transitions, 3791 flow [2024-06-27 18:26:20,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:20,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:20,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:20,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:26:20,922 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:20,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:20,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1417945252, now seen corresponding path program 6 times [2024-06-27 18:26:20,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:20,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775164708] [2024-06-27 18:26:20,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:20,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:20,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:21,698 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 18:26:21,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:21,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775164708] [2024-06-27 18:26:21,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775164708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:21,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:21,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:21,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037681020] [2024-06-27 18:26:21,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:21,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:21,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:21,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:21,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:21,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:21,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 303 transitions, 3791 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:21,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:21,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:21,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:23,558 INFO L124 PetriNetUnfolderBase]: 6790/10281 cut-off events. [2024-06-27 18:26:23,558 INFO L125 PetriNetUnfolderBase]: For 376467/376467 co-relation queries the response was YES. [2024-06-27 18:26:23,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71714 conditions, 10281 events. 6790/10281 cut-off events. For 376467/376467 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 62715 event pairs, 1882 based on Foata normal form. 6/10121 useless extension candidates. Maximal degree in co-relation 71613. Up to 8983 conditions per place. [2024-06-27 18:26:23,693 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 300 selfloop transitions, 51 changer transitions 0/359 dead transitions. [2024-06-27 18:26:23,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 359 transitions, 4929 flow [2024-06-27 18:26:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:23,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:26:23,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:26:23,697 INFO L175 Difference]: Start difference. First operand has 216 places, 303 transitions, 3791 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:26:23,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 359 transitions, 4929 flow [2024-06-27 18:26:24,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 359 transitions, 4771 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:24,313 INFO L231 Difference]: Finished difference. Result has 219 places, 307 transitions, 3882 flow [2024-06-27 18:26:24,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3633, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3882, PETRI_PLACES=219, PETRI_TRANSITIONS=307} [2024-06-27 18:26:24,313 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-06-27 18:26:24,314 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 307 transitions, 3882 flow [2024-06-27 18:26:24,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:24,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:24,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:24,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:26:24,314 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:24,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1162092518, now seen corresponding path program 4 times [2024-06-27 18:26:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118630110] [2024-06-27 18:26:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:25,039 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 18:26:25,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:25,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118630110] [2024-06-27 18:26:25,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118630110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:25,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:25,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:25,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235694999] [2024-06-27 18:26:25,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:25,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:25,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:25,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:25,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:25,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:25,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 307 transitions, 3882 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:25,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:25,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:25,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:27,027 INFO L124 PetriNetUnfolderBase]: 6874/10427 cut-off events. [2024-06-27 18:26:27,028 INFO L125 PetriNetUnfolderBase]: For 396644/396644 co-relation queries the response was YES. [2024-06-27 18:26:27,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73665 conditions, 10427 events. 6874/10427 cut-off events. For 396644/396644 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 63908 event pairs, 1865 based on Foata normal form. 6/10261 useless extension candidates. Maximal degree in co-relation 73563. Up to 9480 conditions per place. [2024-06-27 18:26:27,156 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 313 selfloop transitions, 38 changer transitions 0/359 dead transitions. [2024-06-27 18:26:27,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 359 transitions, 4926 flow [2024-06-27 18:26:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-06-27 18:26:27,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-06-27 18:26:27,158 INFO L175 Difference]: Start difference. First operand has 219 places, 307 transitions, 3882 flow. Second operand 8 states and 189 transitions. [2024-06-27 18:26:27,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 359 transitions, 4926 flow [2024-06-27 18:26:27,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 359 transitions, 4707 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:27,786 INFO L231 Difference]: Finished difference. Result has 221 places, 314 transitions, 3904 flow [2024-06-27 18:26:27,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3663, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3904, PETRI_PLACES=221, PETRI_TRANSITIONS=314} [2024-06-27 18:26:27,787 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-06-27 18:26:27,787 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 314 transitions, 3904 flow [2024-06-27 18:26:27,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:27,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:27,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:27,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:26:27,788 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:27,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:27,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1153163836, now seen corresponding path program 1 times [2024-06-27 18:26:27,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:27,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489264311] [2024-06-27 18:26:27,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:27,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:27,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:28,592 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 18:26:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:28,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489264311] [2024-06-27 18:26:28,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489264311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:28,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:28,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144626913] [2024-06-27 18:26:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:28,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:28,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:28,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 314 transitions, 3904 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:28,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:28,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:30,649 INFO L124 PetriNetUnfolderBase]: 6865/10414 cut-off events. [2024-06-27 18:26:30,649 INFO L125 PetriNetUnfolderBase]: For 401663/401663 co-relation queries the response was YES. [2024-06-27 18:26:30,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73548 conditions, 10414 events. 6865/10414 cut-off events. For 401663/401663 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 63858 event pairs, 1854 based on Foata normal form. 3/10245 useless extension candidates. Maximal degree in co-relation 73444. Up to 9389 conditions per place. [2024-06-27 18:26:30,761 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 305 selfloop transitions, 47 changer transitions 0/360 dead transitions. [2024-06-27 18:26:30,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 360 transitions, 4834 flow [2024-06-27 18:26:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:30,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 18:26:30,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 18:26:30,762 INFO L175 Difference]: Start difference. First operand has 221 places, 314 transitions, 3904 flow. Second operand 8 states and 191 transitions. [2024-06-27 18:26:30,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 360 transitions, 4834 flow [2024-06-27 18:26:31,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 360 transitions, 4599 flow, removed 84 selfloop flow, removed 5 redundant places. [2024-06-27 18:26:31,332 INFO L231 Difference]: Finished difference. Result has 224 places, 314 transitions, 3777 flow [2024-06-27 18:26:31,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3669, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3777, PETRI_PLACES=224, PETRI_TRANSITIONS=314} [2024-06-27 18:26:31,332 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 171 predicate places. [2024-06-27 18:26:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 314 transitions, 3777 flow [2024-06-27 18:26:31,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:31,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:31,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:31,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:26:31,333 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:31,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1153163588, now seen corresponding path program 5 times [2024-06-27 18:26:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:31,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712547162] [2024-06-27 18:26:31,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:31,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:32,198 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 18:26:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712547162] [2024-06-27 18:26:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712547162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817011865] [2024-06-27 18:26:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:32,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:32,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:32,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 314 transitions, 3777 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:32,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:32,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:32,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:34,154 INFO L124 PetriNetUnfolderBase]: 6896/10461 cut-off events. [2024-06-27 18:26:34,155 INFO L125 PetriNetUnfolderBase]: For 406656/406656 co-relation queries the response was YES. [2024-06-27 18:26:34,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73334 conditions, 10461 events. 6896/10461 cut-off events. For 406656/406656 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 64142 event pairs, 1883 based on Foata normal form. 6/10294 useless extension candidates. Maximal degree in co-relation 73229. Up to 9431 conditions per place. [2024-06-27 18:26:34,304 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 310 selfloop transitions, 45 changer transitions 0/363 dead transitions. [2024-06-27 18:26:34,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 363 transitions, 4837 flow [2024-06-27 18:26:34,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:26:34,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:26:34,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-06-27 18:26:34,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-06-27 18:26:34,306 INFO L175 Difference]: Start difference. First operand has 224 places, 314 transitions, 3777 flow. Second operand 8 states and 190 transitions. [2024-06-27 18:26:34,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 363 transitions, 4837 flow [2024-06-27 18:26:35,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 363 transitions, 4743 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:35,022 INFO L231 Difference]: Finished difference. Result has 225 places, 317 transitions, 3915 flow [2024-06-27 18:26:35,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3683, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3915, PETRI_PLACES=225, PETRI_TRANSITIONS=317} [2024-06-27 18:26:35,023 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-06-27 18:26:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 317 transitions, 3915 flow [2024-06-27 18:26:35,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:35,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:35,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:26:35,023 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:35,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1418118232, now seen corresponding path program 7 times [2024-06-27 18:26:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:35,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578935230] [2024-06-27 18:26:35,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:35,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:35,764 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 18:26:35,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:35,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578935230] [2024-06-27 18:26:35,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578935230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:35,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:35,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:35,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728857865] [2024-06-27 18:26:35,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:35,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:35,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:35,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:35,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:35,846 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 317 transitions, 3915 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:35,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:35,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:35,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:37,666 INFO L124 PetriNetUnfolderBase]: 6980/10589 cut-off events. [2024-06-27 18:26:37,666 INFO L125 PetriNetUnfolderBase]: For 434351/434351 co-relation queries the response was YES. [2024-06-27 18:26:37,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75601 conditions, 10589 events. 6980/10589 cut-off events. For 434351/434351 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 65059 event pairs, 1882 based on Foata normal form. 6/10417 useless extension candidates. Maximal degree in co-relation 75495. Up to 9255 conditions per place. [2024-06-27 18:26:37,808 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 316 selfloop transitions, 50 changer transitions 0/374 dead transitions. [2024-06-27 18:26:37,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 374 transitions, 5211 flow [2024-06-27 18:26:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-06-27 18:26:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 18:26:37,810 INFO L175 Difference]: Start difference. First operand has 225 places, 317 transitions, 3915 flow. Second operand 9 states and 216 transitions. [2024-06-27 18:26:37,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 374 transitions, 5211 flow [2024-06-27 18:26:38,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 374 transitions, 4997 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:38,493 INFO L231 Difference]: Finished difference. Result has 228 places, 321 transitions, 3970 flow [2024-06-27 18:26:38,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3711, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3970, PETRI_PLACES=228, PETRI_TRANSITIONS=321} [2024-06-27 18:26:38,493 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-06-27 18:26:38,494 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 321 transitions, 3970 flow [2024-06-27 18:26:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:38,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:38,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:26:38,494 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:38,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:38,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1418123006, now seen corresponding path program 4 times [2024-06-27 18:26:38,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451998313] [2024-06-27 18:26:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:39,215 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 18:26:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451998313] [2024-06-27 18:26:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451998313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345345976] [2024-06-27 18:26:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:39,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:39,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:39,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 321 transitions, 3970 flow. Second operand has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:26:39,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:39,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:39,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:41,147 INFO L124 PetriNetUnfolderBase]: 6567/10220 cut-off events. [2024-06-27 18:26:41,148 INFO L125 PetriNetUnfolderBase]: For 417952/418051 co-relation queries the response was YES. [2024-06-27 18:26:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72401 conditions, 10220 events. 6567/10220 cut-off events. For 417952/418051 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 65075 event pairs, 1771 based on Foata normal form. 28/10029 useless extension candidates. Maximal degree in co-relation 72294. Up to 8787 conditions per place. [2024-06-27 18:26:41,285 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 280 selfloop transitions, 32 changer transitions 0/372 dead transitions. [2024-06-27 18:26:41,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 372 transitions, 4844 flow [2024-06-27 18:26:41,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:26:41,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:26:41,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 18:26:41,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 18:26:41,286 INFO L175 Difference]: Start difference. First operand has 228 places, 321 transitions, 3970 flow. Second operand 9 states and 210 transitions. [2024-06-27 18:26:41,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 372 transitions, 4844 flow [2024-06-27 18:26:41,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 372 transitions, 4615 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:41,948 INFO L231 Difference]: Finished difference. Result has 230 places, 323 transitions, 3922 flow [2024-06-27 18:26:41,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3922, PETRI_PLACES=230, PETRI_TRANSITIONS=323} [2024-06-27 18:26:41,949 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-06-27 18:26:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 323 transitions, 3922 flow [2024-06-27 18:26:41,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.3) internal successors, (133), 10 states have internal predecessors, (133), 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 18:26:41,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:41,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:26:41,950 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:41,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1418122882, now seen corresponding path program 8 times [2024-06-27 18:26:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881610608] [2024-06-27 18:26:41,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:41,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:42,697 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 18:26:42,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:42,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881610608] [2024-06-27 18:26:42,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881610608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:42,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:42,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:26:42,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158277056] [2024-06-27 18:26:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:42,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:26:42,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:26:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:26:42,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:42,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 323 transitions, 3922 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:42,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:42,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:42,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:44,788 INFO L124 PetriNetUnfolderBase]: 7105/10725 cut-off events. [2024-06-27 18:26:44,788 INFO L125 PetriNetUnfolderBase]: For 436487/436487 co-relation queries the response was YES. [2024-06-27 18:26:44,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75514 conditions, 10725 events. 7105/10725 cut-off events. For 436487/436487 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 65516 event pairs, 1868 based on Foata normal form. 6/10562 useless extension candidates. Maximal degree in co-relation 75406. Up to 9104 conditions per place. [2024-06-27 18:26:44,918 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 327 selfloop transitions, 66 changer transitions 0/401 dead transitions. [2024-06-27 18:26:44,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 401 transitions, 5553 flow [2024-06-27 18:26:44,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:26:44,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:26:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-06-27 18:26:44,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 18:26:44,919 INFO L175 Difference]: Start difference. First operand has 230 places, 323 transitions, 3922 flow. Second operand 10 states and 242 transitions. [2024-06-27 18:26:44,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 401 transitions, 5553 flow [2024-06-27 18:26:45,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 401 transitions, 5385 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 18:26:45,527 INFO L231 Difference]: Finished difference. Result has 234 places, 336 transitions, 4232 flow [2024-06-27 18:26:45,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4232, PETRI_PLACES=234, PETRI_TRANSITIONS=336} [2024-06-27 18:26:45,528 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 18:26:45,528 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 336 transitions, 4232 flow [2024-06-27 18:26:45,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 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 18:26:45,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:45,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:45,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:26:45,528 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:45,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:45,529 INFO L85 PathProgramCache]: Analyzing trace with hash 859849515, now seen corresponding path program 2 times [2024-06-27 18:26:45,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:45,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525700443] [2024-06-27 18:26:45,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:45,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:45,968 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 18:26:45,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:45,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525700443] [2024-06-27 18:26:45,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525700443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:45,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:45,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:45,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594944488] [2024-06-27 18:26:45,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:45,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:45,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:45,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:46,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-06-27 18:26:46,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 336 transitions, 4232 flow. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:26:46,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:46,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-06-27 18:26:46,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:47,792 INFO L124 PetriNetUnfolderBase]: 6627/10148 cut-off events. [2024-06-27 18:26:47,792 INFO L125 PetriNetUnfolderBase]: For 443968/444081 co-relation queries the response was YES. [2024-06-27 18:26:47,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72728 conditions, 10148 events. 6627/10148 cut-off events. For 443968/444081 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 63580 event pairs, 1935 based on Foata normal form. 75/10004 useless extension candidates. Maximal degree in co-relation 72618. Up to 9221 conditions per place. [2024-06-27 18:26:47,918 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 307 selfloop transitions, 16 changer transitions 0/352 dead transitions. [2024-06-27 18:26:47,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 352 transitions, 4922 flow [2024-06-27 18:26:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:47,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 18:26:47,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 18:26:47,919 INFO L175 Difference]: Start difference. First operand has 234 places, 336 transitions, 4232 flow. Second operand 6 states and 132 transitions. [2024-06-27 18:26:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 352 transitions, 4922 flow [2024-06-27 18:26:48,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 352 transitions, 4663 flow, removed 100 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:48,538 INFO L231 Difference]: Finished difference. Result has 234 places, 336 transitions, 4013 flow [2024-06-27 18:26:48,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3973, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4013, PETRI_PLACES=234, PETRI_TRANSITIONS=336} [2024-06-27 18:26:48,538 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-06-27 18:26:48,538 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 336 transitions, 4013 flow [2024-06-27 18:26:48,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 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 18:26:48,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:48,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:48,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:26:48,539 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:48,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:48,539 INFO L85 PathProgramCache]: Analyzing trace with hash -462628180, now seen corresponding path program 1 times [2024-06-27 18:26:48,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:48,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247245395] [2024-06-27 18:26:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:48,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:48,964 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 18:26:48,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:48,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247245395] [2024-06-27 18:26:48,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247245395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:48,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:48,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221556942] [2024-06-27 18:26:48,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:48,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:48,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:49,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:49,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 336 transitions, 4013 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 18:26:49,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:49,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:49,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:50,858 INFO L124 PetriNetUnfolderBase]: 7110/10824 cut-off events. [2024-06-27 18:26:50,859 INFO L125 PetriNetUnfolderBase]: For 438628/438628 co-relation queries the response was YES. [2024-06-27 18:26:50,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75935 conditions, 10824 events. 7110/10824 cut-off events. For 438628/438628 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 67035 event pairs, 1965 based on Foata normal form. 3/10636 useless extension candidates. Maximal degree in co-relation 75823. Up to 9927 conditions per place. [2024-06-27 18:26:51,014 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 325 selfloop transitions, 35 changer transitions 0/368 dead transitions. [2024-06-27 18:26:51,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 368 transitions, 4990 flow [2024-06-27 18:26:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:51,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:51,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-06-27 18:26:51,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-06-27 18:26:51,015 INFO L175 Difference]: Start difference. First operand has 234 places, 336 transitions, 4013 flow. Second operand 6 states and 139 transitions. [2024-06-27 18:26:51,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 368 transitions, 4990 flow [2024-06-27 18:26:51,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 368 transitions, 4938 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:51,705 INFO L231 Difference]: Finished difference. Result has 236 places, 342 transitions, 4125 flow [2024-06-27 18:26:51,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3961, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4125, PETRI_PLACES=236, PETRI_TRANSITIONS=342} [2024-06-27 18:26:51,705 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 183 predicate places. [2024-06-27 18:26:51,705 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 342 transitions, 4125 flow [2024-06-27 18:26:51,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 18:26:51,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:51,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:51,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:26:51,706 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:51,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 859856428, now seen corresponding path program 2 times [2024-06-27 18:26:51,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:51,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110507222] [2024-06-27 18:26:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:51,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:52,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:26:52,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:52,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110507222] [2024-06-27 18:26:52,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110507222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:52,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:52,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:26:52,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926321529] [2024-06-27 18:26:52,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:52,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:26:52,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:52,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:26:52,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:26:52,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:52,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 342 transitions, 4125 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 18:26:52,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:52,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:52,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:54,199 INFO L124 PetriNetUnfolderBase]: 7073/10736 cut-off events. [2024-06-27 18:26:54,199 INFO L125 PetriNetUnfolderBase]: For 446059/446068 co-relation queries the response was YES. [2024-06-27 18:26:54,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75860 conditions, 10736 events. 7073/10736 cut-off events. For 446059/446068 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 66114 event pairs, 1983 based on Foata normal form. 3/10559 useless extension candidates. Maximal degree in co-relation 75747. Up to 9873 conditions per place. [2024-06-27 18:26:54,353 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 319 selfloop transitions, 37 changer transitions 0/364 dead transitions. [2024-06-27 18:26:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 364 transitions, 4915 flow [2024-06-27 18:26:54,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:26:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:26:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-06-27 18:26:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 18:26:54,354 INFO L175 Difference]: Start difference. First operand has 236 places, 342 transitions, 4125 flow. Second operand 6 states and 136 transitions. [2024-06-27 18:26:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 364 transitions, 4915 flow [2024-06-27 18:26:55,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 364 transitions, 4851 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 18:26:55,112 INFO L231 Difference]: Finished difference. Result has 238 places, 342 transitions, 4145 flow [2024-06-27 18:26:55,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4061, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4145, PETRI_PLACES=238, PETRI_TRANSITIONS=342} [2024-06-27 18:26:55,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 18:26:55,112 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 342 transitions, 4145 flow [2024-06-27 18:26:55,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 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 18:26:55,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:55,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:55,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:26:55,112 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:55,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:55,113 INFO L85 PathProgramCache]: Analyzing trace with hash 309490229, now seen corresponding path program 1 times [2024-06-27 18:26:55,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:55,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108020445] [2024-06-27 18:26:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:26:56,007 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 18:26:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:26:56,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108020445] [2024-06-27 18:26:56,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108020445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:26:56,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:26:56,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:26:56,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368720876] [2024-06-27 18:26:56,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:26:56,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:26:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:26:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:26:56,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:26:56,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:26:56,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 342 transitions, 4145 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:26:56,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:26:56,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:26:56,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:26:58,514 INFO L124 PetriNetUnfolderBase]: 7937/12218 cut-off events. [2024-06-27 18:26:58,515 INFO L125 PetriNetUnfolderBase]: For 610004/610004 co-relation queries the response was YES. [2024-06-27 18:26:58,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91981 conditions, 12218 events. 7937/12218 cut-off events. For 610004/610004 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 77843 event pairs, 1666 based on Foata normal form. 24/11981 useless extension candidates. Maximal degree in co-relation 91868. Up to 9454 conditions per place. [2024-06-27 18:26:58,696 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 386 selfloop transitions, 50 changer transitions 0/444 dead transitions. [2024-06-27 18:26:58,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 444 transitions, 6217 flow [2024-06-27 18:26:58,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:26:58,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:26:58,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-06-27 18:26:58,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473887814313346 [2024-06-27 18:26:58,709 INFO L175 Difference]: Start difference. First operand has 238 places, 342 transitions, 4145 flow. Second operand 11 states and 283 transitions. [2024-06-27 18:26:58,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 444 transitions, 6217 flow [2024-06-27 18:26:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 444 transitions, 6095 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:26:59,742 INFO L231 Difference]: Finished difference. Result has 245 places, 348 transitions, 4391 flow [2024-06-27 18:26:59,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4023, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4391, PETRI_PLACES=245, PETRI_TRANSITIONS=348} [2024-06-27 18:26:59,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 18:26:59,742 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 348 transitions, 4391 flow [2024-06-27 18:26:59,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:26:59,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:26:59,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:26:59,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:26:59,743 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:26:59,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:26:59,743 INFO L85 PathProgramCache]: Analyzing trace with hash -388203841, now seen corresponding path program 2 times [2024-06-27 18:26:59,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:26:59,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158686226] [2024-06-27 18:26:59,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:26:59,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:26:59,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:00,628 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 18:27:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158686226] [2024-06-27 18:27:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158686226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:00,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304655643] [2024-06-27 18:27:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:00,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:00,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:00,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:00,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 348 transitions, 4391 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:00,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:00,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:00,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:03,443 INFO L124 PetriNetUnfolderBase]: 8177/12520 cut-off events. [2024-06-27 18:27:03,443 INFO L125 PetriNetUnfolderBase]: For 680302/680302 co-relation queries the response was YES. [2024-06-27 18:27:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97882 conditions, 12520 events. 8177/12520 cut-off events. For 680302/680302 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 79984 event pairs, 2075 based on Foata normal form. 24/12305 useless extension candidates. Maximal degree in co-relation 97766. Up to 10144 conditions per place. [2024-06-27 18:27:03,606 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 386 selfloop transitions, 49 changer transitions 0/443 dead transitions. [2024-06-27 18:27:03,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 443 transitions, 6361 flow [2024-06-27 18:27:03,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:03,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:03,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-27 18:27:03,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377176015473888 [2024-06-27 18:27:03,607 INFO L175 Difference]: Start difference. First operand has 245 places, 348 transitions, 4391 flow. Second operand 11 states and 278 transitions. [2024-06-27 18:27:03,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 443 transitions, 6361 flow [2024-06-27 18:27:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 443 transitions, 6204 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:04,711 INFO L231 Difference]: Finished difference. Result has 251 places, 352 transitions, 4549 flow [2024-06-27 18:27:04,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4234, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4549, PETRI_PLACES=251, PETRI_TRANSITIONS=352} [2024-06-27 18:27:04,711 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 198 predicate places. [2024-06-27 18:27:04,711 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 352 transitions, 4549 flow [2024-06-27 18:27:04,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:04,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:04,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:04,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:27:04,712 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:04,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:04,712 INFO L85 PathProgramCache]: Analyzing trace with hash 311367899, now seen corresponding path program 3 times [2024-06-27 18:27:04,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:04,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766945060] [2024-06-27 18:27:04,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:04,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:05,532 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 18:27:05,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:05,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766945060] [2024-06-27 18:27:05,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766945060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:05,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:05,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:05,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371843905] [2024-06-27 18:27:05,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:05,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:05,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:05,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:05,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:05,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 352 transitions, 4549 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:05,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:05,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:05,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:08,407 INFO L124 PetriNetUnfolderBase]: 8789/13087 cut-off events. [2024-06-27 18:27:08,407 INFO L125 PetriNetUnfolderBase]: For 775885/775885 co-relation queries the response was YES. [2024-06-27 18:27:08,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106973 conditions, 13087 events. 8789/13087 cut-off events. For 775885/775885 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 80880 event pairs, 1896 based on Foata normal form. 30/12989 useless extension candidates. Maximal degree in co-relation 106854. Up to 11415 conditions per place. [2024-06-27 18:27:08,593 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 381 selfloop transitions, 91 changer transitions 0/480 dead transitions. [2024-06-27 18:27:08,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 480 transitions, 7236 flow [2024-06-27 18:27:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:08,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 277 transitions. [2024-06-27 18:27:08,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357833655705996 [2024-06-27 18:27:08,594 INFO L175 Difference]: Start difference. First operand has 251 places, 352 transitions, 4549 flow. Second operand 11 states and 277 transitions. [2024-06-27 18:27:08,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 480 transitions, 7236 flow [2024-06-27 18:27:09,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 480 transitions, 7076 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:09,857 INFO L231 Difference]: Finished difference. Result has 261 places, 388 transitions, 5629 flow [2024-06-27 18:27:09,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4396, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5629, PETRI_PLACES=261, PETRI_TRANSITIONS=388} [2024-06-27 18:27:09,857 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 18:27:09,857 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 388 transitions, 5629 flow [2024-06-27 18:27:09,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:09,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:09,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:09,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:27:09,858 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:09,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:09,858 INFO L85 PathProgramCache]: Analyzing trace with hash 398059709, now seen corresponding path program 4 times [2024-06-27 18:27:09,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:09,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709377814] [2024-06-27 18:27:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:09,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:10,722 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 18:27:10,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:10,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709377814] [2024-06-27 18:27:10,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709377814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:10,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:10,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:10,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128434470] [2024-06-27 18:27:10,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:10,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:10,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:10,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:10,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 388 transitions, 5629 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:10,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:10,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:10,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:14,059 INFO L124 PetriNetUnfolderBase]: 9273/13811 cut-off events. [2024-06-27 18:27:14,060 INFO L125 PetriNetUnfolderBase]: For 881000/881000 co-relation queries the response was YES. [2024-06-27 18:27:14,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117559 conditions, 13811 events. 9273/13811 cut-off events. For 881000/881000 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 86362 event pairs, 1973 based on Foata normal form. 30/13713 useless extension candidates. Maximal degree in co-relation 117432. Up to 12281 conditions per place. [2024-06-27 18:27:14,246 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 395 selfloop transitions, 78 changer transitions 0/481 dead transitions. [2024-06-27 18:27:14,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 481 transitions, 7715 flow [2024-06-27 18:27:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 262 transitions. [2024-06-27 18:27:14,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067698259187621 [2024-06-27 18:27:14,247 INFO L175 Difference]: Start difference. First operand has 261 places, 388 transitions, 5629 flow. Second operand 11 states and 262 transitions. [2024-06-27 18:27:14,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 481 transitions, 7715 flow [2024-06-27 18:27:16,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 481 transitions, 7203 flow, removed 249 selfloop flow, removed 2 redundant places. [2024-06-27 18:27:16,325 INFO L231 Difference]: Finished difference. Result has 272 places, 402 transitions, 5829 flow [2024-06-27 18:27:16,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5149, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5829, PETRI_PLACES=272, PETRI_TRANSITIONS=402} [2024-06-27 18:27:16,325 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 18:27:16,325 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 402 transitions, 5829 flow [2024-06-27 18:27:16,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:16,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:16,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:27:16,326 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:16,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash 398203859, now seen corresponding path program 5 times [2024-06-27 18:27:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:16,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905851298] [2024-06-27 18:27:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:16,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:17,214 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 18:27:17,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:17,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905851298] [2024-06-27 18:27:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905851298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117767907] [2024-06-27 18:27:17,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:17,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:17,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 402 transitions, 5829 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:17,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:17,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:17,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:20,652 INFO L124 PetriNetUnfolderBase]: 9573/14271 cut-off events. [2024-06-27 18:27:20,652 INFO L125 PetriNetUnfolderBase]: For 894117/894117 co-relation queries the response was YES. [2024-06-27 18:27:20,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119029 conditions, 14271 events. 9573/14271 cut-off events. For 894117/894117 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 90074 event pairs, 2049 based on Foata normal form. 30/14173 useless extension candidates. Maximal degree in co-relation 118898. Up to 12924 conditions per place. [2024-06-27 18:27:21,058 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 406 selfloop transitions, 71 changer transitions 0/485 dead transitions. [2024-06-27 18:27:21,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 485 transitions, 7579 flow [2024-06-27 18:27:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:21,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-06-27 18:27:21,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029013539651838 [2024-06-27 18:27:21,059 INFO L175 Difference]: Start difference. First operand has 272 places, 402 transitions, 5829 flow. Second operand 11 states and 260 transitions. [2024-06-27 18:27:21,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 485 transitions, 7579 flow [2024-06-27 18:27:22,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 485 transitions, 7273 flow, removed 126 selfloop flow, removed 5 redundant places. [2024-06-27 18:27:22,675 INFO L231 Difference]: Finished difference. Result has 281 places, 412 transitions, 6142 flow [2024-06-27 18:27:22,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5523, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6142, PETRI_PLACES=281, PETRI_TRANSITIONS=412} [2024-06-27 18:27:22,675 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 228 predicate places. [2024-06-27 18:27:22,675 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 412 transitions, 6142 flow [2024-06-27 18:27:22,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:22,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:22,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:22,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:27:22,676 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:22,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:22,676 INFO L85 PathProgramCache]: Analyzing trace with hash 827528815, now seen corresponding path program 1 times [2024-06-27 18:27:22,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:22,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062826222] [2024-06-27 18:27:22,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:22,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:23,650 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 18:27:23,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:23,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062826222] [2024-06-27 18:27:23,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062826222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:23,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:23,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:23,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379355648] [2024-06-27 18:27:23,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:23,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:23,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:23,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:23,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:23,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:23,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 412 transitions, 6142 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:23,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:23,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:23,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:27,363 INFO L124 PetriNetUnfolderBase]: 9596/14799 cut-off events. [2024-06-27 18:27:27,364 INFO L125 PetriNetUnfolderBase]: For 826868/826868 co-relation queries the response was YES. [2024-06-27 18:27:27,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117865 conditions, 14799 events. 9596/14799 cut-off events. For 826868/826868 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 98805 event pairs, 2562 based on Foata normal form. 6/14512 useless extension candidates. Maximal degree in co-relation 117730. Up to 13509 conditions per place. [2024-06-27 18:27:27,566 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 427 selfloop transitions, 38 changer transitions 0/473 dead transitions. [2024-06-27 18:27:27,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 473 transitions, 7508 flow [2024-06-27 18:27:27,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:27,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:27,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-06-27 18:27:27,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-06-27 18:27:27,567 INFO L175 Difference]: Start difference. First operand has 281 places, 412 transitions, 6142 flow. Second operand 9 states and 217 transitions. [2024-06-27 18:27:27,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 473 transitions, 7508 flow [2024-06-27 18:27:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 473 transitions, 7164 flow, removed 127 selfloop flow, removed 7 redundant places. [2024-06-27 18:27:29,224 INFO L231 Difference]: Finished difference. Result has 283 places, 415 transitions, 6036 flow [2024-06-27 18:27:29,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5798, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6036, PETRI_PLACES=283, PETRI_TRANSITIONS=415} [2024-06-27 18:27:29,225 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 230 predicate places. [2024-06-27 18:27:29,225 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 415 transitions, 6036 flow [2024-06-27 18:27:29,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:29,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:29,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:29,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:27:29,226 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:29,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -322885037, now seen corresponding path program 6 times [2024-06-27 18:27:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:29,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358523352] [2024-06-27 18:27:29,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:30,156 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 18:27:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:30,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358523352] [2024-06-27 18:27:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358523352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:30,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684513167] [2024-06-27 18:27:30,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:30,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:30,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:30,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 415 transitions, 6036 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:30,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:30,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:30,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:34,000 INFO L124 PetriNetUnfolderBase]: 10309/15722 cut-off events. [2024-06-27 18:27:34,001 INFO L125 PetriNetUnfolderBase]: For 958357/958366 co-relation queries the response was YES. [2024-06-27 18:27:34,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130290 conditions, 15722 events. 10309/15722 cut-off events. For 958357/958366 co-relation queries the response was YES. Maximal size of possible extension queue 723. Compared 104458 event pairs, 2399 based on Foata normal form. 26/15495 useless extension candidates. Maximal degree in co-relation 130153. Up to 12234 conditions per place. [2024-06-27 18:27:34,369 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 401 selfloop transitions, 94 changer transitions 0/503 dead transitions. [2024-06-27 18:27:34,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 503 transitions, 8318 flow [2024-06-27 18:27:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:27:34,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:27:34,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 259 transitions. [2024-06-27 18:27:34,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.551063829787234 [2024-06-27 18:27:34,370 INFO L175 Difference]: Start difference. First operand has 283 places, 415 transitions, 6036 flow. Second operand 10 states and 259 transitions. [2024-06-27 18:27:34,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 503 transitions, 8318 flow [2024-06-27 18:27:36,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 503 transitions, 8120 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:36,404 INFO L231 Difference]: Finished difference. Result has 288 places, 420 transitions, 6284 flow [2024-06-27 18:27:36,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5838, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6284, PETRI_PLACES=288, PETRI_TRANSITIONS=420} [2024-06-27 18:27:36,405 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 235 predicate places. [2024-06-27 18:27:36,405 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 420 transitions, 6284 flow [2024-06-27 18:27:36,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:36,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:36,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:27:36,406 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:36,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash -322881317, now seen corresponding path program 7 times [2024-06-27 18:27:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271149167] [2024-06-27 18:27:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:37,364 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 18:27:37,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271149167] [2024-06-27 18:27:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271149167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651100982] [2024-06-27 18:27:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:37,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:37,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 420 transitions, 6284 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:37,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:37,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:37,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:41,219 INFO L124 PetriNetUnfolderBase]: 10724/15781 cut-off events. [2024-06-27 18:27:41,219 INFO L125 PetriNetUnfolderBase]: For 1100554/1100563 co-relation queries the response was YES. [2024-06-27 18:27:41,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139770 conditions, 15781 events. 10724/15781 cut-off events. For 1100554/1100563 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 99638 event pairs, 1965 based on Foata normal form. 32/15749 useless extension candidates. Maximal degree in co-relation 139631. Up to 13131 conditions per place. [2024-06-27 18:27:41,435 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 343 selfloop transitions, 164 changer transitions 0/515 dead transitions. [2024-06-27 18:27:41,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 515 transitions, 8637 flow [2024-06-27 18:27:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:41,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-06-27 18:27:41,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5415860735009671 [2024-06-27 18:27:41,437 INFO L175 Difference]: Start difference. First operand has 288 places, 420 transitions, 6284 flow. Second operand 11 states and 280 transitions. [2024-06-27 18:27:41,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 515 transitions, 8637 flow [2024-06-27 18:27:43,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 515 transitions, 8405 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:43,519 INFO L231 Difference]: Finished difference. Result has 295 places, 431 transitions, 6974 flow [2024-06-27 18:27:43,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6054, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6974, PETRI_PLACES=295, PETRI_TRANSITIONS=431} [2024-06-27 18:27:43,519 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 242 predicate places. [2024-06-27 18:27:43,519 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 431 transitions, 6974 flow [2024-06-27 18:27:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:43,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:43,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:27:43,520 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:43,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:43,520 INFO L85 PathProgramCache]: Analyzing trace with hash -322737167, now seen corresponding path program 8 times [2024-06-27 18:27:43,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:43,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840189471] [2024-06-27 18:27:43,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:43,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:44,523 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 18:27:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840189471] [2024-06-27 18:27:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840189471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:44,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:44,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216132120] [2024-06-27 18:27:44,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:44,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:44,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:44,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:44,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 431 transitions, 6974 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:44,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:44,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:48,727 INFO L124 PetriNetUnfolderBase]: 11104/16361 cut-off events. [2024-06-27 18:27:48,727 INFO L125 PetriNetUnfolderBase]: For 1207737/1207746 co-relation queries the response was YES. [2024-06-27 18:27:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150358 conditions, 16361 events. 11104/16361 cut-off events. For 1207737/1207746 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 104156 event pairs, 2062 based on Foata normal form. 32/16329 useless extension candidates. Maximal degree in co-relation 150215. Up to 14004 conditions per place. [2024-06-27 18:27:48,984 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 363 selfloop transitions, 146 changer transitions 0/517 dead transitions. [2024-06-27 18:27:48,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 517 transitions, 8901 flow [2024-06-27 18:27:48,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:27:48,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:27:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 278 transitions. [2024-06-27 18:27:48,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5377176015473888 [2024-06-27 18:27:48,985 INFO L175 Difference]: Start difference. First operand has 295 places, 431 transitions, 6974 flow. Second operand 11 states and 278 transitions. [2024-06-27 18:27:48,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 517 transitions, 8901 flow [2024-06-27 18:27:52,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 517 transitions, 8385 flow, removed 175 selfloop flow, removed 6 redundant places. [2024-06-27 18:27:52,052 INFO L231 Difference]: Finished difference. Result has 300 places, 434 transitions, 6956 flow [2024-06-27 18:27:52,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6460, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6956, PETRI_PLACES=300, PETRI_TRANSITIONS=434} [2024-06-27 18:27:52,052 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-06-27 18:27:52,053 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 434 transitions, 6956 flow [2024-06-27 18:27:52,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:52,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:52,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:52,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:27:52,053 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:52,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:52,053 INFO L85 PathProgramCache]: Analyzing trace with hash -322731215, now seen corresponding path program 2 times [2024-06-27 18:27:52,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:52,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143873495] [2024-06-27 18:27:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:27:53,054 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 18:27:53,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:27:53,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143873495] [2024-06-27 18:27:53,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143873495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:27:53,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:27:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:27:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744521298] [2024-06-27 18:27:53,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:27:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:27:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:27:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:27:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:27:53,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:27:53,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 434 transitions, 6956 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:53,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:27:53,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:27:53,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:27:57,162 INFO L124 PetriNetUnfolderBase]: 11172/17231 cut-off events. [2024-06-27 18:27:57,162 INFO L125 PetriNetUnfolderBase]: For 1136325/1136334 co-relation queries the response was YES. [2024-06-27 18:27:57,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150234 conditions, 17231 events. 11172/17231 cut-off events. For 1136325/1136334 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 118385 event pairs, 2734 based on Foata normal form. 8/16920 useless extension candidates. Maximal degree in co-relation 150089. Up to 14980 conditions per place. [2024-06-27 18:27:57,425 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 406 selfloop transitions, 82 changer transitions 0/496 dead transitions. [2024-06-27 18:27:57,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 496 transitions, 8617 flow [2024-06-27 18:27:57,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:27:57,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:27:57,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-06-27 18:27:57,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 18:27:57,426 INFO L175 Difference]: Start difference. First operand has 300 places, 434 transitions, 6956 flow. Second operand 9 states and 225 transitions. [2024-06-27 18:27:57,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 496 transitions, 8617 flow [2024-06-27 18:27:59,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 496 transitions, 8220 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-27 18:27:59,803 INFO L231 Difference]: Finished difference. Result has 300 places, 437 transitions, 6896 flow [2024-06-27 18:27:59,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6896, PETRI_PLACES=300, PETRI_TRANSITIONS=437} [2024-06-27 18:27:59,804 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-06-27 18:27:59,804 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 437 transitions, 6896 flow [2024-06-27 18:27:59,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:27:59,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:27:59,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:27:59,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:27:59,805 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 18:27:59,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:27:59,805 INFO L85 PathProgramCache]: Analyzing trace with hash -317167025, now seen corresponding path program 3 times [2024-06-27 18:27:59,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:27:59,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368713415] [2024-06-27 18:27:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:27:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:27:59,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:28:00,792 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 18:28:00,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:28:00,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368713415] [2024-06-27 18:28:00,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368713415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:28:00,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:28:00,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:28:00,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469578922] [2024-06-27 18:28:00,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:28:00,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:28:00,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:28:00,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:28:00,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:28:00,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 18:28:00,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 437 transitions, 6896 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 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 18:28:00,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:28:00,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 18:28:00,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand