./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 19:05:13,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:05:13,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:05:13,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:05:13,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:05:13,697 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:05:13,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:05:13,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:05:13,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:05:13,702 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:05:13,702 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:05:13,702 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:05:13,703 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:05:13,704 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:05:13,704 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:05:13,705 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:05:13,705 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:05:13,705 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:05:13,705 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:05:13,705 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:05:13,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:05:13,706 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:05:13,706 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:05:13,706 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:05:13,707 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:05:13,707 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:05:13,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:05:13,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:05:13,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:05:13,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:05:13,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:05:13,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:05:13,709 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:13,709 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:05:13,709 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:05:13,710 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:05:13,711 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:05:13,711 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:05:13,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:05:13,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:05:13,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:05:13,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:05:13,943 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:05:13,943 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:05:13,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 19:05:14,088 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:05:14,089 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:05:14,090 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:15,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:05:15,385 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:05:15,385 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:15,412 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b37e5b43/a1e0ead65bce4273b4c7a60304ede36d/FLAG0dca68dd6 [2024-06-27 19:05:15,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b37e5b43/a1e0ead65bce4273b4c7a60304ede36d [2024-06-27 19:05:15,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:05:15,426 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:05:15,430 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:15,430 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:05:15,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:05:15,434 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:14" (1/2) ... [2024-06-27 19:05:15,435 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be69cb8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:14" (1/2) ... [2024-06-27 19:05:15,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@31ea761 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,467 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:15" (2/2) ... [2024-06-27 19:05:15,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be69cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:15, skipping insertion in model container [2024-06-27 19:05:15,467 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:05:15" (2/2) ... [2024-06-27 19:05:15,468 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:05:15,536 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:05:15,537 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] (((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)) [2024-06-27 19:05:15,537 INFO L97 edCorrectnessWitness]: Location invariant before [L860-L860] (((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)) [2024-06-27 19:05:15,537 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] (((((((((((((((((! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)) [2024-06-27 19:05:15,538 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:05:15,538 INFO L106 edCorrectnessWitness]: ghost_update [L855-L855] multithreaded = 1; [2024-06-27 19:05:15,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:05:15,708 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/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] [2024-06-27 19:05:15,894 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:15,912 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:05:15,947 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/safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1039,1052] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:05:16,043 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:05:16,073 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:05:16,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16 WrapperNode [2024-06-27 19:05:16,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:05:16,074 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:16,075 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:05:16,075 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:05:16,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,130 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2024-06-27 19:05:16,131 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:05:16,131 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:05:16,131 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:05:16,131 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:05:16,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,159 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 19:05:16,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,160 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,167 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,182 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,183 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,186 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:05:16,187 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:05:16,187 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:05:16,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:05:16,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (1/1) ... [2024-06-27 19:05:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:05:16,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:05:16,229 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 19:05:16,239 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 19:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:05:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:05:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:05:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:05:16,263 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:05:16,263 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 19:05:16,264 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 19:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:05:16,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:05:16,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:05:16,266 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 19:05:16,384 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:05:16,385 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:05:16,700 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:05:16,701 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:05:16,874 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:05:16,874 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:05:16,875 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:16 BoogieIcfgContainer [2024-06-27 19:05:16,875 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:05:16,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:05:16,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:05:16,880 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:05:16,880 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:05:14" (1/4) ... [2024-06-27 19:05:16,880 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223e2869 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:05:15" (2/4) ... [2024-06-27 19:05:16,881 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223e2869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,881 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:05:16" (3/4) ... [2024-06-27 19:05:16,882 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223e2869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:05:16, skipping insertion in model container [2024-06-27 19:05:16,882 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:05:16" (4/4) ... [2024-06-27 19:05:16,883 INFO L112 eAbstractionObserver]: Analyzing ICFG safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:05:16,896 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:05:16,897 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-06-27 19:05:16,897 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:05:16,936 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:05:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:05:16,994 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-06-27 19:05:16,994 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:16,997 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 5. Compared 77 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 19:05:16,997 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-06-27 19:05:17,001 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-06-27 19:05:17,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:05:17,017 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;@a9b5059, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:05:17,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-06-27 19:05:17,022 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:05:17,022 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:05:17,022 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:05:17,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:17,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:05:17,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:17,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:17,065 INFO L85 PathProgramCache]: Analyzing trace with hash 431197062, now seen corresponding path program 1 times [2024-06-27 19:05:17,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:17,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962210598] [2024-06-27 19:05:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:17,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:17,985 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 19:05:17,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:17,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962210598] [2024-06-27 19:05:17,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962210598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:17,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:17,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:05:17,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047869330] [2024-06-27 19:05:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:05:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:18,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:05:18,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:05:18,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:18,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:05:18,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:18,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:18,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:19,152 INFO L124 PetriNetUnfolderBase]: 5028/7952 cut-off events. [2024-06-27 19:05:19,153 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-06-27 19:05:19,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15279 conditions, 7952 events. 5028/7952 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 50206 event pairs, 4250 based on Foata normal form. 248/7589 useless extension candidates. Maximal degree in co-relation 15267. Up to 7169 conditions per place. [2024-06-27 19:05:19,193 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 46 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-06-27 19:05:19,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 61 transitions, 239 flow [2024-06-27 19:05:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:05:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:05:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-06-27 19:05:19,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6737588652482269 [2024-06-27 19:05:19,204 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 95 transitions. [2024-06-27 19:05:19,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 61 transitions, 239 flow [2024-06-27 19:05:19,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 61 transitions, 234 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:19,208 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-06-27 19:05:19,210 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 19:05:19,212 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-06-27 19:05:19,212 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-06-27 19:05:19,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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 19:05:19,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:19,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:19,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:05:19,213 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:19,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:19,214 INFO L85 PathProgramCache]: Analyzing trace with hash 2063536677, now seen corresponding path program 1 times [2024-06-27 19:05:19,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:19,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346311242] [2024-06-27 19:05:19,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:19,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:19,688 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 19:05:19,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:19,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346311242] [2024-06-27 19:05:19,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346311242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:19,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:19,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:05:19,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243806438] [2024-06-27 19:05:19,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:19,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:05:19,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:05:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:05:19,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:19,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:05:19,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:19,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:19,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:20,509 INFO L124 PetriNetUnfolderBase]: 5012/7928 cut-off events. [2024-06-27 19:05:20,509 INFO L125 PetriNetUnfolderBase]: For 847/847 co-relation queries the response was YES. [2024-06-27 19:05:20,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16903 conditions, 7928 events. 5012/7928 cut-off events. For 847/847 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 49953 event pairs, 3006 based on Foata normal form. 6/7384 useless extension candidates. Maximal degree in co-relation 16891. Up to 7138 conditions per place. [2024-06-27 19:05:20,548 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 55 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-06-27 19:05:20,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 340 flow [2024-06-27 19:05:20,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:05:20,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:05:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-06-27 19:05:20,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6223404255319149 [2024-06-27 19:05:20,550 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 4 states and 117 transitions. [2024-06-27 19:05:20,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 340 flow [2024-06-27 19:05:20,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:20,552 INFO L231 Difference]: Finished difference. Result has 57 places, 57 transitions, 210 flow [2024-06-27 19:05:20,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=57, PETRI_TRANSITIONS=57} [2024-06-27 19:05:20,553 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 4 predicate places. [2024-06-27 19:05:20,553 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 57 transitions, 210 flow [2024-06-27 19:05:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 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 19:05:20,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:20,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:20,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:05:20,554 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:20,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -455031107, now seen corresponding path program 1 times [2024-06-27 19:05:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:20,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853946989] [2024-06-27 19:05:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:20,612 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 19:05:20,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853946989] [2024-06-27 19:05:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853946989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:20,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:20,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:05:20,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505126456] [2024-06-27 19:05:20,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:20,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:05:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:20,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:05:20,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:05:20,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 47 [2024-06-27 19:05:20,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 57 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:20,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:20,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 47 [2024-06-27 19:05:20,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:20,936 INFO L124 PetriNetUnfolderBase]: 1824/3300 cut-off events. [2024-06-27 19:05:20,936 INFO L125 PetriNetUnfolderBase]: For 1103/1150 co-relation queries the response was YES. [2024-06-27 19:05:20,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 3300 events. 1824/3300 cut-off events. For 1103/1150 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22062 event pairs, 837 based on Foata normal form. 19/3127 useless extension candidates. Maximal degree in co-relation 7263. Up to 2216 conditions per place. [2024-06-27 19:05:20,953 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 43 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2024-06-27 19:05:20,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 69 transitions, 320 flow [2024-06-27 19:05:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:05:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:05:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-06-27 19:05:20,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-06-27 19:05:20,955 INFO L175 Difference]: Start difference. First operand has 57 places, 57 transitions, 210 flow. Second operand 3 states and 104 transitions. [2024-06-27 19:05:20,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 69 transitions, 320 flow [2024-06-27 19:05:20,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 318 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:20,958 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 192 flow [2024-06-27 19:05:20,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 19:05:20,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 5 predicate places. [2024-06-27 19:05:20,959 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 192 flow [2024-06-27 19:05:20,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:20,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:20,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:20,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:05:20,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:20,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:20,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1129285700, now seen corresponding path program 1 times [2024-06-27 19:05:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872149070] [2024-06-27 19:05:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:20,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:21,958 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 19:05:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872149070] [2024-06-27 19:05:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872149070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:05:21,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694716022] [2024-06-27 19:05:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:21,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:05:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:21,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:05:21,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:05:22,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:22,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:05:22,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:22,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:22,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:22,823 INFO L124 PetriNetUnfolderBase]: 4247/6744 cut-off events. [2024-06-27 19:05:22,824 INFO L125 PetriNetUnfolderBase]: For 3214/3222 co-relation queries the response was YES. [2024-06-27 19:05:22,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15806 conditions, 6744 events. 4247/6744 cut-off events. For 3214/3222 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 41242 event pairs, 2080 based on Foata normal form. 12/6543 useless extension candidates. Maximal degree in co-relation 15789. Up to 5994 conditions per place. [2024-06-27 19:05:22,847 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 68 selfloop transitions, 16 changer transitions 4/98 dead transitions. [2024-06-27 19:05:22,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 98 transitions, 502 flow [2024-06-27 19:05:22,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-06-27 19:05:22,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.625531914893617 [2024-06-27 19:05:22,849 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 192 flow. Second operand 5 states and 147 transitions. [2024-06-27 19:05:22,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 98 transitions, 502 flow [2024-06-27 19:05:22,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:22,852 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 292 flow [2024-06-27 19:05:22,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=292, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-27 19:05:22,853 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 10 predicate places. [2024-06-27 19:05:22,853 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 292 flow [2024-06-27 19:05:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 19:05:22,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:22,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:22,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:05:22,854 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:22,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:22,855 INFO L85 PathProgramCache]: Analyzing trace with hash 800561989, now seen corresponding path program 1 times [2024-06-27 19:05:22,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:22,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058845602] [2024-06-27 19:05:22,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:22,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:23,309 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 19:05:23,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058845602] [2024-06-27 19:05:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058845602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:23,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:23,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:23,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807465806] [2024-06-27 19:05:23,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:23,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:23,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:23,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:23,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:23,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:23,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 292 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 19:05:23,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:23,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:23,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:24,224 INFO L124 PetriNetUnfolderBase]: 4290/6810 cut-off events. [2024-06-27 19:05:24,224 INFO L125 PetriNetUnfolderBase]: For 5000/5020 co-relation queries the response was YES. [2024-06-27 19:05:24,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17217 conditions, 6810 events. 4290/6810 cut-off events. For 5000/5020 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41138 event pairs, 2491 based on Foata normal form. 16/6609 useless extension candidates. Maximal degree in co-relation 17196. Up to 6113 conditions per place. [2024-06-27 19:05:24,266 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2024-06-27 19:05:24,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 88 transitions, 546 flow [2024-06-27 19:05:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:24,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:24,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 19:05:24,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 19:05:24,269 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 292 flow. Second operand 5 states and 117 transitions. [2024-06-27 19:05:24,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 88 transitions, 546 flow [2024-06-27 19:05:24,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 88 transitions, 536 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:24,278 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 369 flow [2024-06-27 19:05:24,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-06-27 19:05:24,280 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 15 predicate places. [2024-06-27 19:05:24,284 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 369 flow [2024-06-27 19:05:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 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 19:05:24,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:24,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:24,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:05:24,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:24,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:24,286 INFO L85 PathProgramCache]: Analyzing trace with hash -461786269, now seen corresponding path program 1 times [2024-06-27 19:05:24,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:24,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986679130] [2024-06-27 19:05:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:24,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:24,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:25,728 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 19:05:25,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:25,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986679130] [2024-06-27 19:05:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986679130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:25,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:25,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327276664] [2024-06-27 19:05:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:25,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:25,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-06-27 19:05:25,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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 19:05:25,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:25,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-06-27 19:05:25,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:26,635 INFO L124 PetriNetUnfolderBase]: 3752/6040 cut-off events. [2024-06-27 19:05:26,636 INFO L125 PetriNetUnfolderBase]: For 6298/6322 co-relation queries the response was YES. [2024-06-27 19:05:26,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 6040 events. 3752/6040 cut-off events. For 6298/6322 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 36841 event pairs, 1422 based on Foata normal form. 21/5850 useless extension candidates. Maximal degree in co-relation 16528. Up to 5259 conditions per place. [2024-06-27 19:05:26,662 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 79 selfloop transitions, 21 changer transitions 0/110 dead transitions. [2024-06-27 19:05:26,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 681 flow [2024-06-27 19:05:26,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-06-27 19:05:26,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5886524822695035 [2024-06-27 19:05:26,663 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 369 flow. Second operand 6 states and 166 transitions. [2024-06-27 19:05:26,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 681 flow [2024-06-27 19:05:26,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 110 transitions, 668 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:26,668 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 415 flow [2024-06-27 19:05:26,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-27 19:05:26,669 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 18 predicate places. [2024-06-27 19:05:26,669 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 415 flow [2024-06-27 19:05:26,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 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 19:05:26,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:26,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:26,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:05:26,670 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:26,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash -952380687, now seen corresponding path program 1 times [2024-06-27 19:05:26,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:26,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451013801] [2024-06-27 19:05:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:26,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:27,155 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 19:05:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:27,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451013801] [2024-06-27 19:05:27,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451013801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:27,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:27,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:27,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219189043] [2024-06-27 19:05:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:27,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:27,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:27,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:27,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 19:05:27,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:27,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:27,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:27,974 INFO L124 PetriNetUnfolderBase]: 5131/8081 cut-off events. [2024-06-27 19:05:27,975 INFO L125 PetriNetUnfolderBase]: For 10707/10707 co-relation queries the response was YES. [2024-06-27 19:05:27,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22658 conditions, 8081 events. 5131/8081 cut-off events. For 10707/10707 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 48946 event pairs, 2964 based on Foata normal form. 2/7832 useless extension candidates. Maximal degree in co-relation 22631. Up to 7287 conditions per place. [2024-06-27 19:05:28,012 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 87 selfloop transitions, 12 changer transitions 0/106 dead transitions. [2024-06-27 19:05:28,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 106 transitions, 741 flow [2024-06-27 19:05:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:28,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-06-27 19:05:28,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 19:05:28,014 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 415 flow. Second operand 6 states and 132 transitions. [2024-06-27 19:05:28,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 106 transitions, 741 flow [2024-06-27 19:05:28,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 106 transitions, 690 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:28,020 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 479 flow [2024-06-27 19:05:28,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2024-06-27 19:05:28,021 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 22 predicate places. [2024-06-27 19:05:28,021 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 479 flow [2024-06-27 19:05:28,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 19:05:28,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:28,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:28,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:05:28,022 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:28,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:28,022 INFO L85 PathProgramCache]: Analyzing trace with hash 534265316, now seen corresponding path program 1 times [2024-06-27 19:05:28,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:28,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653322340] [2024-06-27 19:05:28,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:28,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:28,450 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 19:05:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:28,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653322340] [2024-06-27 19:05:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653322340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:28,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:28,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687117951] [2024-06-27 19:05:28,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:28,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:28,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 479 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 19:05:28,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:28,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:28,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:29,374 INFO L124 PetriNetUnfolderBase]: 4978/7915 cut-off events. [2024-06-27 19:05:29,375 INFO L125 PetriNetUnfolderBase]: For 13690/13772 co-relation queries the response was YES. [2024-06-27 19:05:29,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23617 conditions, 7915 events. 4978/7915 cut-off events. For 13690/13772 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 48736 event pairs, 2348 based on Foata normal form. 27/7660 useless extension candidates. Maximal degree in co-relation 23586. Up to 7023 conditions per place. [2024-06-27 19:05:29,476 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 81 selfloop transitions, 24 changer transitions 0/116 dead transitions. [2024-06-27 19:05:29,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 116 transitions, 808 flow [2024-06-27 19:05:29,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 142 transitions. [2024-06-27 19:05:29,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 19:05:29,477 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 479 flow. Second operand 6 states and 142 transitions. [2024-06-27 19:05:29,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 116 transitions, 808 flow [2024-06-27 19:05:29,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 802 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:29,485 INFO L231 Difference]: Finished difference. Result has 81 places, 88 transitions, 599 flow [2024-06-27 19:05:29,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=599, PETRI_PLACES=81, PETRI_TRANSITIONS=88} [2024-06-27 19:05:29,486 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 28 predicate places. [2024-06-27 19:05:29,486 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 88 transitions, 599 flow [2024-06-27 19:05:29,486 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 19:05:29,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:29,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:29,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:05:29,486 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:29,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1676892146, now seen corresponding path program 2 times [2024-06-27 19:05:29,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:29,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089092121] [2024-06-27 19:05:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:29,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:29,996 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 19:05:29,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:29,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089092121] [2024-06-27 19:05:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089092121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36465917] [2024-06-27 19:05:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:29,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:29,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:30,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:30,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 88 transitions, 599 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 19:05:30,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:30,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:30,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:31,049 INFO L124 PetriNetUnfolderBase]: 5114/8103 cut-off events. [2024-06-27 19:05:31,050 INFO L125 PetriNetUnfolderBase]: For 19358/19448 co-relation queries the response was YES. [2024-06-27 19:05:31,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26777 conditions, 8103 events. 5114/8103 cut-off events. For 19358/19448 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 49954 event pairs, 2090 based on Foata normal form. 19/7833 useless extension candidates. Maximal degree in co-relation 26742. Up to 7099 conditions per place. [2024-06-27 19:05:31,096 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 87 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-06-27 19:05:31,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 130 transitions, 1044 flow [2024-06-27 19:05:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:31,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 19:05:31,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 19:05:31,098 INFO L175 Difference]: Start difference. First operand has 81 places, 88 transitions, 599 flow. Second operand 6 states and 143 transitions. [2024-06-27 19:05:31,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 130 transitions, 1044 flow [2024-06-27 19:05:31,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 1009 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:31,114 INFO L231 Difference]: Finished difference. Result has 86 places, 101 transitions, 770 flow [2024-06-27 19:05:31,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=770, PETRI_PLACES=86, PETRI_TRANSITIONS=101} [2024-06-27 19:05:31,115 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-06-27 19:05:31,115 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 101 transitions, 770 flow [2024-06-27 19:05:31,115 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 19:05:31,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:31,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:31,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:05:31,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:31,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:31,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1676902066, now seen corresponding path program 1 times [2024-06-27 19:05:31,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285215417] [2024-06-27 19:05:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:31,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:31,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:31,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:31,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285215417] [2024-06-27 19:05:31,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285215417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:31,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:31,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:31,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006875052] [2024-06-27 19:05:31,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:31,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:31,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:31,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:31,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:31,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 101 transitions, 770 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:31,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:31,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:32,886 INFO L124 PetriNetUnfolderBase]: 5246/8264 cut-off events. [2024-06-27 19:05:32,886 INFO L125 PetriNetUnfolderBase]: For 24003/24003 co-relation queries the response was YES. [2024-06-27 19:05:32,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28418 conditions, 8264 events. 5246/8264 cut-off events. For 24003/24003 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 50271 event pairs, 2498 based on Foata normal form. 2/8006 useless extension candidates. Maximal degree in co-relation 28380. Up to 7425 conditions per place. [2024-06-27 19:05:32,930 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 115 selfloop transitions, 18 changer transitions 0/140 dead transitions. [2024-06-27 19:05:32,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 140 transitions, 1165 flow [2024-06-27 19:05:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:32,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-06-27 19:05:32,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 19:05:32,932 INFO L175 Difference]: Start difference. First operand has 86 places, 101 transitions, 770 flow. Second operand 7 states and 154 transitions. [2024-06-27 19:05:32,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 140 transitions, 1165 flow [2024-06-27 19:05:32,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 140 transitions, 1117 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:32,949 INFO L231 Difference]: Finished difference. Result has 91 places, 105 transitions, 801 flow [2024-06-27 19:05:32,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=801, PETRI_PLACES=91, PETRI_TRANSITIONS=105} [2024-06-27 19:05:32,950 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2024-06-27 19:05:32,950 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 105 transitions, 801 flow [2024-06-27 19:05:32,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:32,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:32,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:05:32,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:32,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:32,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1551298198, now seen corresponding path program 1 times [2024-06-27 19:05:32,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053764753] [2024-06-27 19:05:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:32,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:33,662 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 19:05:33,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:33,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053764753] [2024-06-27 19:05:33,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053764753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:33,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:33,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:33,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136126594] [2024-06-27 19:05:33,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:33,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:33,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:33,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:33,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:33,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:33,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 105 transitions, 801 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 19:05:33,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:33,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:33,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:34,652 INFO L124 PetriNetUnfolderBase]: 4955/7803 cut-off events. [2024-06-27 19:05:34,652 INFO L125 PetriNetUnfolderBase]: For 30320/30498 co-relation queries the response was YES. [2024-06-27 19:05:34,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29050 conditions, 7803 events. 4955/7803 cut-off events. For 30320/30498 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 47499 event pairs, 2208 based on Foata normal form. 84/7476 useless extension candidates. Maximal degree in co-relation 29010. Up to 6907 conditions per place. [2024-06-27 19:05:34,694 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 97 selfloop transitions, 32 changer transitions 0/141 dead transitions. [2024-06-27 19:05:34,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 141 transitions, 1210 flow [2024-06-27 19:05:34,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:34,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 19:05:34,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 19:05:34,696 INFO L175 Difference]: Start difference. First operand has 91 places, 105 transitions, 801 flow. Second operand 6 states and 143 transitions. [2024-06-27 19:05:34,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 141 transitions, 1210 flow [2024-06-27 19:05:34,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 141 transitions, 1151 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:34,722 INFO L231 Difference]: Finished difference. Result has 93 places, 114 transitions, 921 flow [2024-06-27 19:05:34,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=93, PETRI_TRANSITIONS=114} [2024-06-27 19:05:34,723 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-06-27 19:05:34,724 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 114 transitions, 921 flow [2024-06-27 19:05:34,724 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 19:05:34,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:34,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:05:34,724 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:34,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash -617642958, now seen corresponding path program 1 times [2024-06-27 19:05:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:34,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332669768] [2024-06-27 19:05:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:34,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:35,237 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 19:05:35,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:35,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332669768] [2024-06-27 19:05:35,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332669768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:35,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:35,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:35,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718742978] [2024-06-27 19:05:35,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:35,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:35,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:35,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:35,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:35,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:35,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 114 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:35,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:35,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:35,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:36,273 INFO L124 PetriNetUnfolderBase]: 5292/8321 cut-off events. [2024-06-27 19:05:36,273 INFO L125 PetriNetUnfolderBase]: For 31255/31255 co-relation queries the response was YES. [2024-06-27 19:05:36,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30710 conditions, 8321 events. 5292/8321 cut-off events. For 31255/31255 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 50042 event pairs, 2463 based on Foata normal form. 4/8066 useless extension candidates. Maximal degree in co-relation 30668. Up to 7429 conditions per place. [2024-06-27 19:05:36,329 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 138 selfloop transitions, 28 changer transitions 0/173 dead transitions. [2024-06-27 19:05:36,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 173 transitions, 1602 flow [2024-06-27 19:05:36,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-06-27 19:05:36,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-06-27 19:05:36,331 INFO L175 Difference]: Start difference. First operand has 93 places, 114 transitions, 921 flow. Second operand 7 states and 159 transitions. [2024-06-27 19:05:36,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 173 transitions, 1602 flow [2024-06-27 19:05:36,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 173 transitions, 1559 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:36,357 INFO L231 Difference]: Finished difference. Result has 101 places, 137 transitions, 1253 flow [2024-06-27 19:05:36,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1253, PETRI_PLACES=101, PETRI_TRANSITIONS=137} [2024-06-27 19:05:36,358 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 48 predicate places. [2024-06-27 19:05:36,358 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 137 transitions, 1253 flow [2024-06-27 19:05:36,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:36,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:36,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:05:36,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:36,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:36,359 INFO L85 PathProgramCache]: Analyzing trace with hash -409770288, now seen corresponding path program 2 times [2024-06-27 19:05:36,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:36,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299556818] [2024-06-27 19:05:36,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:36,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:36,893 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 19:05:36,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:36,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299556818] [2024-06-27 19:05:36,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299556818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:36,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:36,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594059750] [2024-06-27 19:05:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:36,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:36,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:36,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 137 transitions, 1253 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:36,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:36,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:36,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:37,973 INFO L124 PetriNetUnfolderBase]: 5376/8436 cut-off events. [2024-06-27 19:05:37,973 INFO L125 PetriNetUnfolderBase]: For 39054/39066 co-relation queries the response was YES. [2024-06-27 19:05:37,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32821 conditions, 8436 events. 5376/8436 cut-off events. For 39054/39066 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 50843 event pairs, 2219 based on Foata normal form. 12/8189 useless extension candidates. Maximal degree in co-relation 32774. Up to 7253 conditions per place. [2024-06-27 19:05:38,021 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 145 selfloop transitions, 51 changer transitions 0/203 dead transitions. [2024-06-27 19:05:38,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 203 transitions, 2021 flow [2024-06-27 19:05:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:38,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 19:05:38,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 19:05:38,023 INFO L175 Difference]: Start difference. First operand has 101 places, 137 transitions, 1253 flow. Second operand 7 states and 163 transitions. [2024-06-27 19:05:38,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 203 transitions, 2021 flow [2024-06-27 19:05:38,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 203 transitions, 1987 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:38,057 INFO L231 Difference]: Finished difference. Result has 109 places, 163 transitions, 1612 flow [2024-06-27 19:05:38,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1612, PETRI_PLACES=109, PETRI_TRANSITIONS=163} [2024-06-27 19:05:38,058 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-06-27 19:05:38,058 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 163 transitions, 1612 flow [2024-06-27 19:05:38,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:38,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:38,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:05:38,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:38,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash 444050404, now seen corresponding path program 3 times [2024-06-27 19:05:38,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636195532] [2024-06-27 19:05:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:38,581 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 19:05:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636195532] [2024-06-27 19:05:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636195532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:38,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:38,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:38,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240562000] [2024-06-27 19:05:38,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:38,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:38,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:38,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:38,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:38,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:38,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 163 transitions, 1612 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:38,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:38,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:38,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:39,661 INFO L124 PetriNetUnfolderBase]: 5395/8474 cut-off events. [2024-06-27 19:05:39,661 INFO L125 PetriNetUnfolderBase]: For 48358/48370 co-relation queries the response was YES. [2024-06-27 19:05:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35561 conditions, 8474 events. 5395/8474 cut-off events. For 48358/48370 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51265 event pairs, 2236 based on Foata normal form. 8/8219 useless extension candidates. Maximal degree in co-relation 35509. Up to 7268 conditions per place. [2024-06-27 19:05:39,714 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 147 selfloop transitions, 54 changer transitions 0/208 dead transitions. [2024-06-27 19:05:39,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 208 transitions, 2260 flow [2024-06-27 19:05:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-06-27 19:05:39,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-06-27 19:05:39,716 INFO L175 Difference]: Start difference. First operand has 109 places, 163 transitions, 1612 flow. Second operand 7 states and 164 transitions. [2024-06-27 19:05:39,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 208 transitions, 2260 flow [2024-06-27 19:05:39,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 208 transitions, 2187 flow, removed 28 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:39,764 INFO L231 Difference]: Finished difference. Result has 115 places, 169 transitions, 1760 flow [2024-06-27 19:05:39,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1760, PETRI_PLACES=115, PETRI_TRANSITIONS=169} [2024-06-27 19:05:39,765 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 62 predicate places. [2024-06-27 19:05:39,765 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 169 transitions, 1760 flow [2024-06-27 19:05:39,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 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 19:05:39,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:39,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:39,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:05:39,766 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:39,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:39,766 INFO L85 PathProgramCache]: Analyzing trace with hash 444357986, now seen corresponding path program 1 times [2024-06-27 19:05:39,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352477982] [2024-06-27 19:05:39,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:39,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:40,589 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 19:05:40,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:40,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352477982] [2024-06-27 19:05:40,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352477982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:40,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:40,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118018884] [2024-06-27 19:05:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:40,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:40,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:40,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:40,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:40,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 169 transitions, 1760 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:40,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:40,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:40,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:41,856 INFO L124 PetriNetUnfolderBase]: 5400/8476 cut-off events. [2024-06-27 19:05:41,856 INFO L125 PetriNetUnfolderBase]: For 51227/51227 co-relation queries the response was YES. [2024-06-27 19:05:41,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36202 conditions, 8476 events. 5400/8476 cut-off events. For 51227/51227 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 51168 event pairs, 2281 based on Foata normal form. 4/8220 useless extension candidates. Maximal degree in co-relation 36147. Up to 7601 conditions per place. [2024-06-27 19:05:41,909 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 182 selfloop transitions, 27 changer transitions 0/216 dead transitions. [2024-06-27 19:05:41,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 216 transitions, 2363 flow [2024-06-27 19:05:41,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 176 transitions. [2024-06-27 19:05:41,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-06-27 19:05:41,913 INFO L175 Difference]: Start difference. First operand has 115 places, 169 transitions, 1760 flow. Second operand 8 states and 176 transitions. [2024-06-27 19:05:41,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 216 transitions, 2363 flow [2024-06-27 19:05:41,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 216 transitions, 2276 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:41,959 INFO L231 Difference]: Finished difference. Result has 120 places, 172 transitions, 1780 flow [2024-06-27 19:05:41,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1780, PETRI_PLACES=120, PETRI_TRANSITIONS=172} [2024-06-27 19:05:41,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 67 predicate places. [2024-06-27 19:05:41,959 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 172 transitions, 1780 flow [2024-06-27 19:05:41,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:41,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:41,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:41,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:05:41,960 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:41,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:41,960 INFO L85 PathProgramCache]: Analyzing trace with hash -845723569, now seen corresponding path program 1 times [2024-06-27 19:05:41,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:41,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165762860] [2024-06-27 19:05:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:41,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:42,802 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 19:05:42,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165762860] [2024-06-27 19:05:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165762860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95204453] [2024-06-27 19:05:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:42,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:42,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:42,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:42,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:42,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:42,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 172 transitions, 1780 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 19:05:42,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:42,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:42,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:44,055 INFO L124 PetriNetUnfolderBase]: 5245/8221 cut-off events. [2024-06-27 19:05:44,056 INFO L125 PetriNetUnfolderBase]: For 62721/63016 co-relation queries the response was YES. [2024-06-27 19:05:44,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36896 conditions, 8221 events. 5245/8221 cut-off events. For 62721/63016 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 49828 event pairs, 1735 based on Foata normal form. 45/7816 useless extension candidates. Maximal degree in co-relation 36840. Up to 7118 conditions per place. [2024-06-27 19:05:44,115 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 159 selfloop transitions, 44 changer transitions 0/228 dead transitions. [2024-06-27 19:05:44,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 228 transitions, 2417 flow [2024-06-27 19:05:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:44,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2024-06-27 19:05:44,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-06-27 19:05:44,117 INFO L175 Difference]: Start difference. First operand has 120 places, 172 transitions, 1780 flow. Second operand 7 states and 175 transitions. [2024-06-27 19:05:44,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 228 transitions, 2417 flow [2024-06-27 19:05:44,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 228 transitions, 2338 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:44,167 INFO L231 Difference]: Finished difference. Result has 123 places, 182 transitions, 1906 flow [2024-06-27 19:05:44,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1906, PETRI_PLACES=123, PETRI_TRANSITIONS=182} [2024-06-27 19:05:44,168 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 70 predicate places. [2024-06-27 19:05:44,168 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 182 transitions, 1906 flow [2024-06-27 19:05:44,169 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 19:05:44,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:44,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:44,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:05:44,169 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:44,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:44,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1971739232, now seen corresponding path program 1 times [2024-06-27 19:05:44,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:44,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388636148] [2024-06-27 19:05:44,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:44,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:44,884 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 19:05:44,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:44,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388636148] [2024-06-27 19:05:44,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388636148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:44,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279489950] [2024-06-27 19:05:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:44,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:44,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:44,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:44,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 182 transitions, 1906 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:44,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:44,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:44,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:46,222 INFO L124 PetriNetUnfolderBase]: 5542/8698 cut-off events. [2024-06-27 19:05:46,222 INFO L125 PetriNetUnfolderBase]: For 65334/65334 co-relation queries the response was YES. [2024-06-27 19:05:46,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39370 conditions, 8698 events. 5542/8698 cut-off events. For 65334/65334 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 52715 event pairs, 2234 based on Foata normal form. 2/8431 useless extension candidates. Maximal degree in co-relation 39311. Up to 7743 conditions per place. [2024-06-27 19:05:46,291 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 180 selfloop transitions, 37 changer transitions 0/224 dead transitions. [2024-06-27 19:05:46,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 224 transitions, 2522 flow [2024-06-27 19:05:46,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:46,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:05:46,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 19:05:46,293 INFO L175 Difference]: Start difference. First operand has 123 places, 182 transitions, 1906 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:05:46,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 224 transitions, 2522 flow [2024-06-27 19:05:46,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 224 transitions, 2476 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:46,359 INFO L231 Difference]: Finished difference. Result has 130 places, 189 transitions, 2059 flow [2024-06-27 19:05:46,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2059, PETRI_PLACES=130, PETRI_TRANSITIONS=189} [2024-06-27 19:05:46,360 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-06-27 19:05:46,360 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 189 transitions, 2059 flow [2024-06-27 19:05:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:46,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:46,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:46,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:05:46,361 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:46,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1967270799, now seen corresponding path program 2 times [2024-06-27 19:05:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:46,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422975030] [2024-06-27 19:05:46,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:47,285 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 19:05:47,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422975030] [2024-06-27 19:05:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422975030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:47,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:47,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:47,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061523141] [2024-06-27 19:05:47,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:47,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:47,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:47,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:47,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:47,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:47,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 189 transitions, 2059 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 19:05:47,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:47,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:47,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:48,618 INFO L124 PetriNetUnfolderBase]: 5353/8411 cut-off events. [2024-06-27 19:05:48,619 INFO L125 PetriNetUnfolderBase]: For 78552/78840 co-relation queries the response was YES. [2024-06-27 19:05:48,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40096 conditions, 8411 events. 5353/8411 cut-off events. For 78552/78840 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 51349 event pairs, 1672 based on Foata normal form. 52/7994 useless extension candidates. Maximal degree in co-relation 40033. Up to 7078 conditions per place. [2024-06-27 19:05:48,698 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 158 selfloop transitions, 59 changer transitions 0/245 dead transitions. [2024-06-27 19:05:48,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 245 transitions, 2791 flow [2024-06-27 19:05:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:48,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-06-27 19:05:48,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5227963525835866 [2024-06-27 19:05:48,700 INFO L175 Difference]: Start difference. First operand has 130 places, 189 transitions, 2059 flow. Second operand 7 states and 172 transitions. [2024-06-27 19:05:48,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 245 transitions, 2791 flow [2024-06-27 19:05:48,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 245 transitions, 2739 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:48,793 INFO L231 Difference]: Finished difference. Result has 136 places, 199 transitions, 2296 flow [2024-06-27 19:05:48,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2296, PETRI_PLACES=136, PETRI_TRANSITIONS=199} [2024-06-27 19:05:48,793 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 83 predicate places. [2024-06-27 19:05:48,793 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 199 transitions, 2296 flow [2024-06-27 19:05:48,794 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 19:05:48,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:48,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:48,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:05:48,794 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:48,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:48,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1967061053, now seen corresponding path program 1 times [2024-06-27 19:05:48,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:48,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606675247] [2024-06-27 19:05:48,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:48,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:49,548 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 19:05:49,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606675247] [2024-06-27 19:05:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606675247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:49,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:49,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339183510] [2024-06-27 19:05:49,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:49,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:49,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:49,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:49,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 199 transitions, 2296 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:49,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:49,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:49,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:51,071 INFO L124 PetriNetUnfolderBase]: 5728/8954 cut-off events. [2024-06-27 19:05:51,071 INFO L125 PetriNetUnfolderBase]: For 85233/85236 co-relation queries the response was YES. [2024-06-27 19:05:51,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43292 conditions, 8954 events. 5728/8954 cut-off events. For 85233/85236 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 54209 event pairs, 2279 based on Foata normal form. 6/8690 useless extension candidates. Maximal degree in co-relation 43226. Up to 7991 conditions per place. [2024-06-27 19:05:51,124 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 206 selfloop transitions, 33 changer transitions 0/246 dead transitions. [2024-06-27 19:05:51,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 246 transitions, 2960 flow [2024-06-27 19:05:51,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:51,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 181 transitions. [2024-06-27 19:05:51,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48138297872340424 [2024-06-27 19:05:51,126 INFO L175 Difference]: Start difference. First operand has 136 places, 199 transitions, 2296 flow. Second operand 8 states and 181 transitions. [2024-06-27 19:05:51,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 246 transitions, 2960 flow [2024-06-27 19:05:51,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 246 transitions, 2890 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:51,203 INFO L231 Difference]: Finished difference. Result has 141 places, 203 transitions, 2363 flow [2024-06-27 19:05:51,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2226, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2363, PETRI_PLACES=141, PETRI_TRANSITIONS=203} [2024-06-27 19:05:51,204 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-06-27 19:05:51,204 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 203 transitions, 2363 flow [2024-06-27 19:05:51,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:51,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:51,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:51,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:05:51,205 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:51,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:51,205 INFO L85 PathProgramCache]: Analyzing trace with hash 172827651, now seen corresponding path program 2 times [2024-06-27 19:05:51,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:51,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556785082] [2024-06-27 19:05:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:51,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:51,903 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 19:05:51,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:51,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556785082] [2024-06-27 19:05:51,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556785082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:51,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:51,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:51,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077112254] [2024-06-27 19:05:51,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:51,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:51,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:51,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:51,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:51,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:51,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 203 transitions, 2363 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:51,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:51,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:51,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:53,465 INFO L124 PetriNetUnfolderBase]: 5770/9014 cut-off events. [2024-06-27 19:05:53,465 INFO L125 PetriNetUnfolderBase]: For 89597/89609 co-relation queries the response was YES. [2024-06-27 19:05:53,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43982 conditions, 9014 events. 5770/9014 cut-off events. For 89597/89609 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 54641 event pairs, 2192 based on Foata normal form. 8/8751 useless extension candidates. Maximal degree in co-relation 43914. Up to 7743 conditions per place. [2024-06-27 19:05:53,530 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 179 selfloop transitions, 67 changer transitions 0/253 dead transitions. [2024-06-27 19:05:53,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 253 transitions, 3150 flow [2024-06-27 19:05:53,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:53,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:53,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-27 19:05:53,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946808510638298 [2024-06-27 19:05:53,532 INFO L175 Difference]: Start difference. First operand has 141 places, 203 transitions, 2363 flow. Second operand 8 states and 186 transitions. [2024-06-27 19:05:53,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 253 transitions, 3150 flow [2024-06-27 19:05:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 253 transitions, 3063 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:53,616 INFO L231 Difference]: Finished difference. Result has 143 places, 207 transitions, 2481 flow [2024-06-27 19:05:53,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2276, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2481, PETRI_PLACES=143, PETRI_TRANSITIONS=207} [2024-06-27 19:05:53,616 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 90 predicate places. [2024-06-27 19:05:53,616 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 207 transitions, 2481 flow [2024-06-27 19:05:53,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:53,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:53,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:53,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:05:53,617 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:53,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:53,617 INFO L85 PathProgramCache]: Analyzing trace with hash 172819715, now seen corresponding path program 3 times [2024-06-27 19:05:53,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:53,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527937275] [2024-06-27 19:05:53,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:53,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:54,562 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 19:05:54,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:54,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527937275] [2024-06-27 19:05:54,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527937275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:54,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:54,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069730809] [2024-06-27 19:05:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:54,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:54,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:05:54,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 207 transitions, 2481 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 19:05:54,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:54,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:05:54,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:56,016 INFO L124 PetriNetUnfolderBase]: 5410/8322 cut-off events. [2024-06-27 19:05:56,017 INFO L125 PetriNetUnfolderBase]: For 99846/100121 co-relation queries the response was YES. [2024-06-27 19:05:56,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43068 conditions, 8322 events. 5410/8322 cut-off events. For 99846/100121 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 49477 event pairs, 1499 based on Foata normal form. 66/7988 useless extension candidates. Maximal degree in co-relation 42999. Up to 6973 conditions per place. [2024-06-27 19:05:56,081 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 155 selfloop transitions, 86 changer transitions 0/271 dead transitions. [2024-06-27 19:05:56,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 271 transitions, 3297 flow [2024-06-27 19:05:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 19:05:56,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 19:05:56,084 INFO L175 Difference]: Start difference. First operand has 143 places, 207 transitions, 2481 flow. Second operand 8 states and 199 transitions. [2024-06-27 19:05:56,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 271 transitions, 3297 flow [2024-06-27 19:05:56,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 271 transitions, 3129 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:56,191 INFO L231 Difference]: Finished difference. Result has 147 places, 218 transitions, 2713 flow [2024-06-27 19:05:56,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2313, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2713, PETRI_PLACES=147, PETRI_TRANSITIONS=218} [2024-06-27 19:05:56,191 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-06-27 19:05:56,191 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 218 transitions, 2713 flow [2024-06-27 19:05:56,192 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 19:05:56,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:56,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:56,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:05:56,192 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:56,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:56,192 INFO L85 PathProgramCache]: Analyzing trace with hash 880921567, now seen corresponding path program 3 times [2024-06-27 19:05:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:56,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982265174] [2024-06-27 19:05:56,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:56,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:56,972 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 19:05:56,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:56,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982265174] [2024-06-27 19:05:56,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982265174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:56,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:56,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:56,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25342320] [2024-06-27 19:05:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:56,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:56,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:57,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:57,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 218 transitions, 2713 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:57,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:57,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:57,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:58,316 INFO L124 PetriNetUnfolderBase]: 5773/9009 cut-off events. [2024-06-27 19:05:58,317 INFO L125 PetriNetUnfolderBase]: For 106125/106137 co-relation queries the response was YES. [2024-06-27 19:05:58,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46365 conditions, 9009 events. 5773/9009 cut-off events. For 106125/106137 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 54560 event pairs, 2167 based on Foata normal form. 8/8749 useless extension candidates. Maximal degree in co-relation 46293. Up to 7743 conditions per place. [2024-06-27 19:05:58,371 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 188 selfloop transitions, 73 changer transitions 0/268 dead transitions. [2024-06-27 19:05:58,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 268 transitions, 3538 flow [2024-06-27 19:05:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:58,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:58,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 19:05:58,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-27 19:05:58,374 INFO L175 Difference]: Start difference. First operand has 147 places, 218 transitions, 2713 flow. Second operand 8 states and 185 transitions. [2024-06-27 19:05:58,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 268 transitions, 3538 flow [2024-06-27 19:05:58,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 268 transitions, 3438 flow, removed 35 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:58,493 INFO L231 Difference]: Finished difference. Result has 153 places, 222 transitions, 2830 flow [2024-06-27 19:05:58,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2830, PETRI_PLACES=153, PETRI_TRANSITIONS=222} [2024-06-27 19:05:58,493 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-06-27 19:05:58,493 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 222 transitions, 2830 flow [2024-06-27 19:05:58,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 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 19:05:58,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:58,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:58,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:05:58,494 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:05:58,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:58,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1151231685, now seen corresponding path program 1 times [2024-06-27 19:05:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:58,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549356661] [2024-06-27 19:05:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:58,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:59,414 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 19:05:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549356661] [2024-06-27 19:05:59,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549356661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:59,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:59,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:59,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372167019] [2024-06-27 19:05:59,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:59,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:59,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:59,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:59,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:59,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:05:59,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 222 transitions, 2830 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:05:59,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:59,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:05:59,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:01,100 INFO L124 PetriNetUnfolderBase]: 5991/9361 cut-off events. [2024-06-27 19:06:01,100 INFO L125 PetriNetUnfolderBase]: For 111810/111812 co-relation queries the response was YES. [2024-06-27 19:06:01,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48521 conditions, 9361 events. 5991/9361 cut-off events. For 111810/111812 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 56576 event pairs, 1986 based on Foata normal form. 6/9089 useless extension candidates. Maximal degree in co-relation 48447. Up to 8219 conditions per place. [2024-06-27 19:06:01,159 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 262 selfloop transitions, 50 changer transitions 0/319 dead transitions. [2024-06-27 19:06:01,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 319 transitions, 4129 flow [2024-06-27 19:06:01,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-06-27 19:06:01,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-06-27 19:06:01,161 INFO L175 Difference]: Start difference. First operand has 153 places, 222 transitions, 2830 flow. Second operand 9 states and 214 transitions. [2024-06-27 19:06:01,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 319 transitions, 4129 flow [2024-06-27 19:06:01,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 319 transitions, 3939 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:06:01,291 INFO L231 Difference]: Finished difference. Result has 160 places, 257 transitions, 3270 flow [2024-06-27 19:06:01,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3270, PETRI_PLACES=160, PETRI_TRANSITIONS=257} [2024-06-27 19:06:01,291 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-06-27 19:06:01,291 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 257 transitions, 3270 flow [2024-06-27 19:06:01,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:01,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:01,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:06:01,292 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:01,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:01,292 INFO L85 PathProgramCache]: Analyzing trace with hash -447625433, now seen corresponding path program 2 times [2024-06-27 19:06:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:01,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197131725] [2024-06-27 19:06:01,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:01,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:02,216 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 19:06:02,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:02,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197131725] [2024-06-27 19:06:02,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197131725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:02,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:02,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:02,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504560296] [2024-06-27 19:06:02,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:02,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:02,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:02,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:02,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:02,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:02,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 257 transitions, 3270 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:02,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:02,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:02,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:03,993 INFO L124 PetriNetUnfolderBase]: 6043/9427 cut-off events. [2024-06-27 19:06:03,994 INFO L125 PetriNetUnfolderBase]: For 121358/121362 co-relation queries the response was YES. [2024-06-27 19:06:04,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50505 conditions, 9427 events. 6043/9427 cut-off events. For 121358/121362 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 56870 event pairs, 1888 based on Foata normal form. 8/9159 useless extension candidates. Maximal degree in co-relation 50426. Up to 8181 conditions per place. [2024-06-27 19:06:04,073 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 260 selfloop transitions, 56 changer transitions 0/323 dead transitions. [2024-06-27 19:06:04,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 323 transitions, 4255 flow [2024-06-27 19:06:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:04,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-06-27 19:06:04,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-06-27 19:06:04,074 INFO L175 Difference]: Start difference. First operand has 160 places, 257 transitions, 3270 flow. Second operand 8 states and 192 transitions. [2024-06-27 19:06:04,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 323 transitions, 4255 flow [2024-06-27 19:06:04,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 323 transitions, 4215 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-27 19:06:04,250 INFO L231 Difference]: Finished difference. Result has 169 places, 265 transitions, 3498 flow [2024-06-27 19:06:04,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3498, PETRI_PLACES=169, PETRI_TRANSITIONS=265} [2024-06-27 19:06:04,250 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-06-27 19:06:04,250 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 265 transitions, 3498 flow [2024-06-27 19:06:04,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:04,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:04,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:04,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:06:04,251 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:04,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:04,251 INFO L85 PathProgramCache]: Analyzing trace with hash -2132327979, now seen corresponding path program 3 times [2024-06-27 19:06:04,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:04,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023102479] [2024-06-27 19:06:04,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:04,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:05,276 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 19:06:05,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:05,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023102479] [2024-06-27 19:06:05,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023102479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:05,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:05,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:05,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302276764] [2024-06-27 19:06:05,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:05,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:05,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:05,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:05,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:05,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:05,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 265 transitions, 3498 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:05,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:05,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:05,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:07,171 INFO L124 PetriNetUnfolderBase]: 6183/9646 cut-off events. [2024-06-27 19:06:07,172 INFO L125 PetriNetUnfolderBase]: For 136871/136871 co-relation queries the response was YES. [2024-06-27 19:06:07,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53463 conditions, 9646 events. 6183/9646 cut-off events. For 136871/136871 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 58344 event pairs, 1881 based on Foata normal form. 4/9365 useless extension candidates. Maximal degree in co-relation 53379. Up to 8053 conditions per place. [2024-06-27 19:06:07,238 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 262 selfloop transitions, 74 changer transitions 0/343 dead transitions. [2024-06-27 19:06:07,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 343 transitions, 4817 flow [2024-06-27 19:06:07,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:07,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-06-27 19:06:07,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-06-27 19:06:07,240 INFO L175 Difference]: Start difference. First operand has 169 places, 265 transitions, 3498 flow. Second operand 8 states and 193 transitions. [2024-06-27 19:06:07,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 343 transitions, 4817 flow [2024-06-27 19:06:07,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 343 transitions, 4740 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:07,404 INFO L231 Difference]: Finished difference. Result has 177 places, 284 transitions, 3927 flow [2024-06-27 19:06:07,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3439, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3927, PETRI_PLACES=177, PETRI_TRANSITIONS=284} [2024-06-27 19:06:07,405 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-06-27 19:06:07,405 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 284 transitions, 3927 flow [2024-06-27 19:06:07,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:07,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:07,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:07,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:06:07,406 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:07,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:07,406 INFO L85 PathProgramCache]: Analyzing trace with hash -994372835, now seen corresponding path program 4 times [2024-06-27 19:06:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919927205] [2024-06-27 19:06:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:07,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:08,214 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 19:06:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:08,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919927205] [2024-06-27 19:06:08,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919927205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:08,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:08,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:08,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474669401] [2024-06-27 19:06:08,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:08,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:08,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:08,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:08,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:08,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:08,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 284 transitions, 3927 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:08,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:08,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:08,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:09,888 INFO L124 PetriNetUnfolderBase]: 6173/9620 cut-off events. [2024-06-27 19:06:09,889 INFO L125 PetriNetUnfolderBase]: For 141904/141904 co-relation queries the response was YES. [2024-06-27 19:06:09,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54571 conditions, 9620 events. 6173/9620 cut-off events. For 141904/141904 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 58089 event pairs, 1858 based on Foata normal form. 4/9343 useless extension candidates. Maximal degree in co-relation 54483. Up to 8045 conditions per place. [2024-06-27 19:06:09,975 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 259 selfloop transitions, 78 changer transitions 0/344 dead transitions. [2024-06-27 19:06:09,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 344 transitions, 4920 flow [2024-06-27 19:06:09,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:09,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-06-27 19:06:09,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5079787234042553 [2024-06-27 19:06:09,976 INFO L175 Difference]: Start difference. First operand has 177 places, 284 transitions, 3927 flow. Second operand 8 states and 191 transitions. [2024-06-27 19:06:09,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 344 transitions, 4920 flow [2024-06-27 19:06:10,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 344 transitions, 4824 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-27 19:06:10,288 INFO L231 Difference]: Finished difference. Result has 185 places, 287 transitions, 4077 flow [2024-06-27 19:06:10,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3839, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4077, PETRI_PLACES=185, PETRI_TRANSITIONS=287} [2024-06-27 19:06:10,289 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-06-27 19:06:10,289 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 287 transitions, 4077 flow [2024-06-27 19:06:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:10,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:10,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:06:10,290 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:10,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:10,291 INFO L85 PathProgramCache]: Analyzing trace with hash -994372587, now seen corresponding path program 1 times [2024-06-27 19:06:10,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:10,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800883453] [2024-06-27 19:06:10,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:10,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:10,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:11,207 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 19:06:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800883453] [2024-06-27 19:06:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800883453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:11,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:11,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851867812] [2024-06-27 19:06:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:11,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:11,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:11,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:11,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:11,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:11,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 287 transitions, 4077 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:11,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:11,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:11,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:12,891 INFO L124 PetriNetUnfolderBase]: 6411/9977 cut-off events. [2024-06-27 19:06:12,891 INFO L125 PetriNetUnfolderBase]: For 153786/153786 co-relation queries the response was YES. [2024-06-27 19:06:12,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57953 conditions, 9977 events. 6411/9977 cut-off events. For 153786/153786 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 60190 event pairs, 2266 based on Foata normal form. 2/9686 useless extension candidates. Maximal degree in co-relation 57861. Up to 8834 conditions per place. [2024-06-27 19:06:12,983 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 302 selfloop transitions, 69 changer transitions 0/378 dead transitions. [2024-06-27 19:06:12,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 378 transitions, 5904 flow [2024-06-27 19:06:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:12,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:12,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 193 transitions. [2024-06-27 19:06:12,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562647754137116 [2024-06-27 19:06:12,985 INFO L175 Difference]: Start difference. First operand has 185 places, 287 transitions, 4077 flow. Second operand 9 states and 193 transitions. [2024-06-27 19:06:12,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 378 transitions, 5904 flow [2024-06-27 19:06:13,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 378 transitions, 5784 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:13,278 INFO L231 Difference]: Finished difference. Result has 194 places, 332 transitions, 5098 flow [2024-06-27 19:06:13,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3977, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5098, PETRI_PLACES=194, PETRI_TRANSITIONS=332} [2024-06-27 19:06:13,279 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 141 predicate places. [2024-06-27 19:06:13,280 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 332 transitions, 5098 flow [2024-06-27 19:06:13,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:13,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:13,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:13,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:06:13,280 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:13,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:13,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1184796669, now seen corresponding path program 1 times [2024-06-27 19:06:13,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:13,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322552000] [2024-06-27 19:06:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:13,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:14,103 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 19:06:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:14,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322552000] [2024-06-27 19:06:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322552000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:14,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972683686] [2024-06-27 19:06:14,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:14,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:14,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:14,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:14,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 332 transitions, 5098 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:14,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:14,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:14,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:15,995 INFO L124 PetriNetUnfolderBase]: 6479/10078 cut-off events. [2024-06-27 19:06:15,995 INFO L125 PetriNetUnfolderBase]: For 163851/163857 co-relation queries the response was YES. [2024-06-27 19:06:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58982 conditions, 10078 events. 6479/10078 cut-off events. For 163851/163857 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 61001 event pairs, 2230 based on Foata normal form. 12/9796 useless extension candidates. Maximal degree in co-relation 58885. Up to 8796 conditions per place. [2024-06-27 19:06:16,095 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 317 selfloop transitions, 66 changer transitions 0/390 dead transitions. [2024-06-27 19:06:16,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 390 transitions, 6130 flow [2024-06-27 19:06:16,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:16,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:16,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 19:06:16,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-27 19:06:16,097 INFO L175 Difference]: Start difference. First operand has 194 places, 332 transitions, 5098 flow. Second operand 9 states and 203 transitions. [2024-06-27 19:06:16,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 390 transitions, 6130 flow [2024-06-27 19:06:16,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 390 transitions, 6080 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-27 19:06:16,423 INFO L231 Difference]: Finished difference. Result has 202 places, 335 transitions, 5245 flow [2024-06-27 19:06:16,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5245, PETRI_PLACES=202, PETRI_TRANSITIONS=335} [2024-06-27 19:06:16,424 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 149 predicate places. [2024-06-27 19:06:16,424 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 335 transitions, 5245 flow [2024-06-27 19:06:16,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:16,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:16,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:16,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:06:16,424 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:16,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:16,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1070726019, now seen corresponding path program 5 times [2024-06-27 19:06:16,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:16,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69905844] [2024-06-27 19:06:16,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:16,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:17,289 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 19:06:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69905844] [2024-06-27 19:06:17,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69905844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:17,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:17,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:17,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423751990] [2024-06-27 19:06:17,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:17,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:17,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:17,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:17,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:17,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:17,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 335 transitions, 5245 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:17,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:17,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:17,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:19,158 INFO L124 PetriNetUnfolderBase]: 6603/10089 cut-off events. [2024-06-27 19:06:19,159 INFO L125 PetriNetUnfolderBase]: For 179060/179072 co-relation queries the response was YES. [2024-06-27 19:06:19,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61201 conditions, 10089 events. 6603/10089 cut-off events. For 179060/179072 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 59772 event pairs, 1557 based on Foata normal form. 12/9851 useless extension candidates. Maximal degree in co-relation 61101. Up to 7626 conditions per place. [2024-06-27 19:06:19,263 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 273 selfloop transitions, 132 changer transitions 0/412 dead transitions. [2024-06-27 19:06:19,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 412 transitions, 6693 flow [2024-06-27 19:06:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:06:19,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:06:19,265 INFO L175 Difference]: Start difference. First operand has 202 places, 335 transitions, 5245 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:06:19,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 412 transitions, 6693 flow [2024-06-27 19:06:19,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 412 transitions, 6566 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:19,603 INFO L231 Difference]: Finished difference. Result has 208 places, 352 transitions, 5762 flow [2024-06-27 19:06:19,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5118, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5762, PETRI_PLACES=208, PETRI_TRANSITIONS=352} [2024-06-27 19:06:19,604 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-06-27 19:06:19,604 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 352 transitions, 5762 flow [2024-06-27 19:06:19,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:19,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:19,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:19,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:06:19,605 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:19,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1347791247, now seen corresponding path program 2 times [2024-06-27 19:06:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:19,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685174267] [2024-06-27 19:06:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:20,422 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 19:06:20,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:20,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685174267] [2024-06-27 19:06:20,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685174267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:20,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:20,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090471539] [2024-06-27 19:06:20,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:20,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:20,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:20,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:20,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:20,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:20,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 352 transitions, 5762 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:20,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:20,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:20,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:22,526 INFO L124 PetriNetUnfolderBase]: 6671/10376 cut-off events. [2024-06-27 19:06:22,526 INFO L125 PetriNetUnfolderBase]: For 207513/207528 co-relation queries the response was YES. [2024-06-27 19:06:22,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65641 conditions, 10376 events. 6671/10376 cut-off events. For 207513/207528 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 63330 event pairs, 2043 based on Foata normal form. 14/10084 useless extension candidates. Maximal degree in co-relation 65536. Up to 8915 conditions per place. [2024-06-27 19:06:22,619 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 299 selfloop transitions, 110 changer transitions 0/416 dead transitions. [2024-06-27 19:06:22,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 416 transitions, 6972 flow [2024-06-27 19:06:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-06-27 19:06:22,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799054373522459 [2024-06-27 19:06:22,620 INFO L175 Difference]: Start difference. First operand has 208 places, 352 transitions, 5762 flow. Second operand 9 states and 203 transitions. [2024-06-27 19:06:22,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 416 transitions, 6972 flow [2024-06-27 19:06:23,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 416 transitions, 6848 flow, removed 42 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:23,014 INFO L231 Difference]: Finished difference. Result has 217 places, 364 transitions, 6129 flow [2024-06-27 19:06:23,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5640, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6129, PETRI_PLACES=217, PETRI_TRANSITIONS=364} [2024-06-27 19:06:23,015 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-06-27 19:06:23,015 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 364 transitions, 6129 flow [2024-06-27 19:06:23,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:23,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:23,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:23,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:06:23,016 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:23,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1357910577, now seen corresponding path program 3 times [2024-06-27 19:06:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:23,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291113587] [2024-06-27 19:06:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:23,569 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 19:06:23,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:23,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291113587] [2024-06-27 19:06:23,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291113587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:23,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:23,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:23,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743959947] [2024-06-27 19:06:23,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:23,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:23,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:23,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:23,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:23,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:23,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 364 transitions, 6129 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:23,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:23,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:23,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:25,704 INFO L124 PetriNetUnfolderBase]: 6739/10473 cut-off events. [2024-06-27 19:06:25,704 INFO L125 PetriNetUnfolderBase]: For 220177/220192 co-relation queries the response was YES. [2024-06-27 19:06:25,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67595 conditions, 10473 events. 6739/10473 cut-off events. For 220177/220192 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 63830 event pairs, 2049 based on Foata normal form. 14/10182 useless extension candidates. Maximal degree in co-relation 67486. Up to 8816 conditions per place. [2024-06-27 19:06:25,793 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 276 selfloop transitions, 130 changer transitions 0/413 dead transitions. [2024-06-27 19:06:25,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 413 transitions, 7291 flow [2024-06-27 19:06:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-06-27 19:06:25,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-06-27 19:06:25,795 INFO L175 Difference]: Start difference. First operand has 217 places, 364 transitions, 6129 flow. Second operand 8 states and 185 transitions. [2024-06-27 19:06:25,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 413 transitions, 7291 flow [2024-06-27 19:06:26,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 413 transitions, 7076 flow, removed 45 selfloop flow, removed 4 redundant places. [2024-06-27 19:06:26,233 INFO L231 Difference]: Finished difference. Result has 221 places, 367 transitions, 6252 flow [2024-06-27 19:06:26,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5914, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6252, PETRI_PLACES=221, PETRI_TRANSITIONS=367} [2024-06-27 19:06:26,234 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-06-27 19:06:26,234 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 367 transitions, 6252 flow [2024-06-27 19:06:26,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:26,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:26,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:26,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:06:26,235 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:26,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1358266767, now seen corresponding path program 4 times [2024-06-27 19:06:26,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:26,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477163130] [2024-06-27 19:06:26,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:26,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:26,847 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 19:06:26,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:26,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477163130] [2024-06-27 19:06:26,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477163130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:26,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:26,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:26,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298669438] [2024-06-27 19:06:26,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:26,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:26,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:26,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:26,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:26,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 367 transitions, 6252 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:26,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:26,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:26,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:28,825 INFO L124 PetriNetUnfolderBase]: 6807/10576 cut-off events. [2024-06-27 19:06:28,825 INFO L125 PetriNetUnfolderBase]: For 236578/236593 co-relation queries the response was YES. [2024-06-27 19:06:28,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69155 conditions, 10576 events. 6807/10576 cut-off events. For 236578/236593 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 64457 event pairs, 1912 based on Foata normal form. 14/10284 useless extension candidates. Maximal degree in co-relation 69045. Up to 8526 conditions per place. [2024-06-27 19:06:28,940 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 277 selfloop transitions, 141 changer transitions 0/425 dead transitions. [2024-06-27 19:06:28,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 425 transitions, 7664 flow [2024-06-27 19:06:28,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:28,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:28,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-27 19:06:28,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-06-27 19:06:28,942 INFO L175 Difference]: Start difference. First operand has 221 places, 367 transitions, 6252 flow. Second operand 8 states and 187 transitions. [2024-06-27 19:06:28,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 425 transitions, 7664 flow [2024-06-27 19:06:29,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 425 transitions, 7308 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:29,601 INFO L231 Difference]: Finished difference. Result has 223 places, 376 transitions, 6387 flow [2024-06-27 19:06:29,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5896, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6387, PETRI_PLACES=223, PETRI_TRANSITIONS=376} [2024-06-27 19:06:29,602 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 170 predicate places. [2024-06-27 19:06:29,602 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 376 transitions, 6387 flow [2024-06-27 19:06:29,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:29,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:29,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:29,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:06:29,603 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:29,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:29,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1062451809, now seen corresponding path program 6 times [2024-06-27 19:06:29,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:29,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952835610] [2024-06-27 19:06:29,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:29,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:30,738 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 19:06:30,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:30,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952835610] [2024-06-27 19:06:30,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952835610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:30,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:30,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:30,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291560237] [2024-06-27 19:06:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:30,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:30,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:30,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:30,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:30,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 376 transitions, 6387 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:30,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:30,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:30,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:32,926 INFO L124 PetriNetUnfolderBase]: 6859/10473 cut-off events. [2024-06-27 19:06:32,927 INFO L125 PetriNetUnfolderBase]: For 248479/248491 co-relation queries the response was YES. [2024-06-27 19:06:33,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70640 conditions, 10473 events. 6859/10473 cut-off events. For 248479/248491 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 62246 event pairs, 1635 based on Foata normal form. 8/10227 useless extension candidates. Maximal degree in co-relation 70528. Up to 8507 conditions per place. [2024-06-27 19:06:33,051 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 321 selfloop transitions, 123 changer transitions 0/451 dead transitions. [2024-06-27 19:06:33,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 451 transitions, 7978 flow [2024-06-27 19:06:33,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:33,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:06:33,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:06:33,052 INFO L175 Difference]: Start difference. First operand has 223 places, 376 transitions, 6387 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:06:33,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 451 transitions, 7978 flow [2024-06-27 19:06:33,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 451 transitions, 7782 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:33,710 INFO L231 Difference]: Finished difference. Result has 231 places, 391 transitions, 6832 flow [2024-06-27 19:06:33,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6191, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6832, PETRI_PLACES=231, PETRI_TRANSITIONS=391} [2024-06-27 19:06:33,711 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 178 predicate places. [2024-06-27 19:06:33,711 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 391 transitions, 6832 flow [2024-06-27 19:06:33,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:33,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:33,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:33,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:06:33,711 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:33,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:33,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1062445299, now seen corresponding path program 7 times [2024-06-27 19:06:33,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:33,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24611680] [2024-06-27 19:06:33,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:33,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:34,525 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 19:06:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24611680] [2024-06-27 19:06:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24611680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:34,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:34,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967700462] [2024-06-27 19:06:34,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:34,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:34,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:34,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:34,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:34,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:34,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 391 transitions, 6832 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:34,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:34,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:34,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:36,669 INFO L124 PetriNetUnfolderBase]: 6849/10465 cut-off events. [2024-06-27 19:06:36,670 INFO L125 PetriNetUnfolderBase]: For 261400/261412 co-relation queries the response was YES. [2024-06-27 19:06:36,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72229 conditions, 10465 events. 6849/10465 cut-off events. For 261400/261412 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 62172 event pairs, 1652 based on Foata normal form. 8/10217 useless extension candidates. Maximal degree in co-relation 72112. Up to 7946 conditions per place. [2024-06-27 19:06:36,798 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 300 selfloop transitions, 144 changer transitions 0/451 dead transitions. [2024-06-27 19:06:36,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 451 transitions, 8231 flow [2024-06-27 19:06:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:36,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:06:36,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:06:36,800 INFO L175 Difference]: Start difference. First operand has 231 places, 391 transitions, 6832 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:06:36,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 451 transitions, 8231 flow [2024-06-27 19:06:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 451 transitions, 8071 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-06-27 19:06:37,446 INFO L231 Difference]: Finished difference. Result has 238 places, 395 transitions, 7082 flow [2024-06-27 19:06:37,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6698, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7082, PETRI_PLACES=238, PETRI_TRANSITIONS=395} [2024-06-27 19:06:37,446 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 185 predicate places. [2024-06-27 19:06:37,447 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 395 transitions, 7082 flow [2024-06-27 19:06:37,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:37,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:37,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:37,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:06:37,447 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:37,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1062691377, now seen corresponding path program 5 times [2024-06-27 19:06:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083517973] [2024-06-27 19:06:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:38,264 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 19:06:38,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:38,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083517973] [2024-06-27 19:06:38,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083517973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:38,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:38,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408695202] [2024-06-27 19:06:38,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:38,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:38,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:38,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 395 transitions, 7082 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:38,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:38,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:38,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:40,465 INFO L124 PetriNetUnfolderBase]: 6880/10685 cut-off events. [2024-06-27 19:06:40,466 INFO L125 PetriNetUnfolderBase]: For 270317/270332 co-relation queries the response was YES. [2024-06-27 19:06:40,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73582 conditions, 10685 events. 6880/10685 cut-off events. For 270317/270332 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 65268 event pairs, 2096 based on Foata normal form. 14/10391 useless extension candidates. Maximal degree in co-relation 73462. Up to 9218 conditions per place. [2024-06-27 19:06:40,583 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 339 selfloop transitions, 104 changer transitions 0/450 dead transitions. [2024-06-27 19:06:40,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 450 transitions, 8221 flow [2024-06-27 19:06:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 19:06:40,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 19:06:40,585 INFO L175 Difference]: Start difference. First operand has 238 places, 395 transitions, 7082 flow. Second operand 9 states and 204 transitions. [2024-06-27 19:06:40,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 450 transitions, 8221 flow [2024-06-27 19:06:41,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 450 transitions, 8054 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:41,191 INFO L231 Difference]: Finished difference. Result has 244 places, 398 transitions, 7188 flow [2024-06-27 19:06:41,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6915, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7188, PETRI_PLACES=244, PETRI_TRANSITIONS=398} [2024-06-27 19:06:41,192 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 191 predicate places. [2024-06-27 19:06:41,192 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 398 transitions, 7188 flow [2024-06-27 19:06:41,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 states have internal predecessors, (113), 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 19:06:41,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:41,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:41,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:06:41,193 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:41,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1444218419, now seen corresponding path program 2 times [2024-06-27 19:06:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095006530] [2024-06-27 19:06:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:41,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:41,913 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 19:06:41,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:41,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095006530] [2024-06-27 19:06:41,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095006530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:41,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:41,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:06:41,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811890880] [2024-06-27 19:06:41,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:41,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:06:41,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:41,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:06:41,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:06:41,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:41,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 398 transitions, 7188 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:41,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:41,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:41,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:44,041 INFO L124 PetriNetUnfolderBase]: 6875/10678 cut-off events. [2024-06-27 19:06:44,041 INFO L125 PetriNetUnfolderBase]: For 273607/273622 co-relation queries the response was YES. [2024-06-27 19:06:44,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73411 conditions, 10678 events. 6875/10678 cut-off events. For 273607/273622 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 65175 event pairs, 2075 based on Foata normal form. 8/10378 useless extension candidates. Maximal degree in co-relation 73290. Up to 9121 conditions per place. [2024-06-27 19:06:44,150 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 296 selfloop transitions, 130 changer transitions 0/433 dead transitions. [2024-06-27 19:06:44,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 433 transitions, 8176 flow [2024-06-27 19:06:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:06:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:06:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:06:44,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 19:06:44,152 INFO L175 Difference]: Start difference. First operand has 244 places, 398 transitions, 7188 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:06:44,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 433 transitions, 8176 flow [2024-06-27 19:06:44,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 433 transitions, 7982 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 19:06:44,818 INFO L231 Difference]: Finished difference. Result has 245 places, 398 transitions, 7297 flow [2024-06-27 19:06:44,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6994, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7297, PETRI_PLACES=245, PETRI_TRANSITIONS=398} [2024-06-27 19:06:44,818 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 192 predicate places. [2024-06-27 19:06:44,818 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 398 transitions, 7297 flow [2024-06-27 19:06:44,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:06:44,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:44,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:44,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:06:44,819 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:44,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:44,819 INFO L85 PathProgramCache]: Analyzing trace with hash 468780890, now seen corresponding path program 1 times [2024-06-27 19:06:44,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:44,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473143186] [2024-06-27 19:06:44,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:44,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:45,869 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 19:06:45,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:45,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473143186] [2024-06-27 19:06:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473143186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869940155] [2024-06-27 19:06:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:45,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:45,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:45,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:45,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:45,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:06:45,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 398 transitions, 7297 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:06:45,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:45,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:06:45,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:48,242 INFO L124 PetriNetUnfolderBase]: 6578/10291 cut-off events. [2024-06-27 19:06:48,242 INFO L125 PetriNetUnfolderBase]: For 291431/291703 co-relation queries the response was YES. [2024-06-27 19:06:48,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72123 conditions, 10291 events. 6578/10291 cut-off events. For 291431/291703 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 63316 event pairs, 1436 based on Foata normal form. 25/9802 useless extension candidates. Maximal degree in co-relation 72001. Up to 8606 conditions per place. [2024-06-27 19:06:48,355 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 299 selfloop transitions, 75 changer transitions 0/457 dead transitions. [2024-06-27 19:06:48,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 457 transitions, 8349 flow [2024-06-27 19:06:48,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:48,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:06:48,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:06:48,357 INFO L175 Difference]: Start difference. First operand has 245 places, 398 transitions, 7297 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:06:48,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 457 transitions, 8349 flow [2024-06-27 19:06:49,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 457 transitions, 8076 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:49,025 INFO L231 Difference]: Finished difference. Result has 247 places, 404 transitions, 7277 flow [2024-06-27 19:06:49,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7024, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7277, PETRI_PLACES=247, PETRI_TRANSITIONS=404} [2024-06-27 19:06:49,026 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 194 predicate places. [2024-06-27 19:06:49,026 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 404 transitions, 7277 flow [2024-06-27 19:06:49,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:06:49,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:49,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:06:49,027 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:49,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:49,027 INFO L85 PathProgramCache]: Analyzing trace with hash -877322164, now seen corresponding path program 2 times [2024-06-27 19:06:49,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:49,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075439574] [2024-06-27 19:06:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:50,148 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 19:06:50,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:50,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075439574] [2024-06-27 19:06:50,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075439574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:50,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:50,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:06:50,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934990147] [2024-06-27 19:06:50,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:50,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:06:50,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:50,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:06:50,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:06:50,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:06:50,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 404 transitions, 7277 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:06:50,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:50,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:06:50,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:52,542 INFO L124 PetriNetUnfolderBase]: 6642/10402 cut-off events. [2024-06-27 19:06:52,542 INFO L125 PetriNetUnfolderBase]: For 279115/279502 co-relation queries the response was YES. [2024-06-27 19:06:52,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73156 conditions, 10402 events. 6642/10402 cut-off events. For 279115/279502 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 64368 event pairs, 1713 based on Foata normal form. 41/9907 useless extension candidates. Maximal degree in co-relation 73034. Up to 8637 conditions per place. [2024-06-27 19:06:52,645 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 300 selfloop transitions, 78 changer transitions 0/461 dead transitions. [2024-06-27 19:06:52,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 461 transitions, 8343 flow [2024-06-27 19:06:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:06:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:06:52,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-06-27 19:06:52,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2024-06-27 19:06:52,649 INFO L175 Difference]: Start difference. First operand has 247 places, 404 transitions, 7277 flow. Second operand 8 states and 198 transitions. [2024-06-27 19:06:52,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 461 transitions, 8343 flow [2024-06-27 19:06:53,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 461 transitions, 8164 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:53,309 INFO L231 Difference]: Finished difference. Result has 250 places, 406 transitions, 7303 flow [2024-06-27 19:06:53,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7098, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7303, PETRI_PLACES=250, PETRI_TRANSITIONS=406} [2024-06-27 19:06:53,310 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 197 predicate places. [2024-06-27 19:06:53,310 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 406 transitions, 7303 flow [2024-06-27 19:06:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:06:53,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:53,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:53,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:06:53,311 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:53,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:53,311 INFO L85 PathProgramCache]: Analyzing trace with hash -877172062, now seen corresponding path program 1 times [2024-06-27 19:06:53,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:53,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656786900] [2024-06-27 19:06:53,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:53,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:53,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:54,389 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 19:06:54,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:54,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656786900] [2024-06-27 19:06:54,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656786900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:54,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:54,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:54,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361152035] [2024-06-27 19:06:54,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:54,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:54,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:54,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:54,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:54,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:54,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 406 transitions, 7303 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:06:54,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:54,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:54,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:56,794 INFO L124 PetriNetUnfolderBase]: 7103/10991 cut-off events. [2024-06-27 19:06:56,795 INFO L125 PetriNetUnfolderBase]: For 279528/279528 co-relation queries the response was YES. [2024-06-27 19:06:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76531 conditions, 10991 events. 7103/10991 cut-off events. For 279528/279528 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 66938 event pairs, 1905 based on Foata normal form. 4/10700 useless extension candidates. Maximal degree in co-relation 76408. Up to 9562 conditions per place. [2024-06-27 19:06:56,907 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 396 selfloop transitions, 74 changer transitions 0/477 dead transitions. [2024-06-27 19:06:56,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 477 transitions, 8704 flow [2024-06-27 19:06:56,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:06:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:06:56,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 19:06:56,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 19:06:56,908 INFO L175 Difference]: Start difference. First operand has 250 places, 406 transitions, 7303 flow. Second operand 9 states and 211 transitions. [2024-06-27 19:06:56,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 477 transitions, 8704 flow [2024-06-27 19:06:57,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 477 transitions, 8531 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:06:57,534 INFO L231 Difference]: Finished difference. Result has 256 places, 416 transitions, 7549 flow [2024-06-27 19:06:57,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7130, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7549, PETRI_PLACES=256, PETRI_TRANSITIONS=416} [2024-06-27 19:06:57,535 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-06-27 19:06:57,535 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 416 transitions, 7549 flow [2024-06-27 19:06:57,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:06:57,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:57,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:57,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:06:57,536 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:06:57,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:57,537 INFO L85 PathProgramCache]: Analyzing trace with hash -760777912, now seen corresponding path program 2 times [2024-06-27 19:06:57,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:57,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498428129] [2024-06-27 19:06:57,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:57,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:58,390 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 19:06:58,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:58,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498428129] [2024-06-27 19:06:58,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498428129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:58,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:58,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:06:58,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971083928] [2024-06-27 19:06:58,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:58,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:06:58,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:58,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:06:58,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:06:58,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:06:58,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 416 transitions, 7549 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 19:06:58,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:58,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:06:58,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:00,915 INFO L124 PetriNetUnfolderBase]: 7155/10870 cut-off events. [2024-06-27 19:07:00,915 INFO L125 PetriNetUnfolderBase]: For 289753/289765 co-relation queries the response was YES. [2024-06-27 19:07:00,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77651 conditions, 10870 events. 7155/10870 cut-off events. For 289753/289765 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 64594 event pairs, 1523 based on Foata normal form. 8/10633 useless extension candidates. Maximal degree in co-relation 77524. Up to 8411 conditions per place. [2024-06-27 19:07:01,026 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 300 selfloop transitions, 171 changer transitions 0/478 dead transitions. [2024-06-27 19:07:01,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 478 transitions, 9044 flow [2024-06-27 19:07:01,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:07:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:07:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-06-27 19:07:01,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-06-27 19:07:01,027 INFO L175 Difference]: Start difference. First operand has 256 places, 416 transitions, 7549 flow. Second operand 8 states and 197 transitions. [2024-06-27 19:07:01,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 478 transitions, 9044 flow [2024-06-27 19:07:01,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 478 transitions, 8884 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:01,708 INFO L231 Difference]: Finished difference. Result has 261 places, 420 transitions, 7889 flow [2024-06-27 19:07:01,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7389, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7889, PETRI_PLACES=261, PETRI_TRANSITIONS=420} [2024-06-27 19:07:01,718 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-06-27 19:07:01,719 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 420 transitions, 7889 flow [2024-06-27 19:07:01,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 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 19:07:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:01,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:07:01,719 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:01,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -2008086607, now seen corresponding path program 1 times [2024-06-27 19:07:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576814564] [2024-06-27 19:07:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:02,817 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 19:07:02,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:02,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576814564] [2024-06-27 19:07:02,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576814564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:02,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:02,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:02,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753052065] [2024-06-27 19:07:02,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:02,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:02,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:02,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:02,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 420 transitions, 7889 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:02,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:02,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:02,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:05,286 INFO L124 PetriNetUnfolderBase]: 7158/11090 cut-off events. [2024-06-27 19:07:05,286 INFO L125 PetriNetUnfolderBase]: For 304896/304896 co-relation queries the response was YES. [2024-06-27 19:07:05,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79512 conditions, 11090 events. 7158/11090 cut-off events. For 304896/304896 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 67925 event pairs, 2200 based on Foata normal form. 4/10791 useless extension candidates. Maximal degree in co-relation 79383. Up to 9635 conditions per place. [2024-06-27 19:07:05,429 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 382 selfloop transitions, 94 changer transitions 0/483 dead transitions. [2024-06-27 19:07:05,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 483 transitions, 9260 flow [2024-06-27 19:07:05,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:05,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:05,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-27 19:07:05,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-06-27 19:07:05,436 INFO L175 Difference]: Start difference. First operand has 261 places, 420 transitions, 7889 flow. Second operand 9 states and 204 transitions. [2024-06-27 19:07:05,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 483 transitions, 9260 flow [2024-06-27 19:07:06,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 483 transitions, 8869 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-27 19:07:06,226 INFO L231 Difference]: Finished difference. Result has 266 places, 431 transitions, 7959 flow [2024-06-27 19:07:06,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7520, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7959, PETRI_PLACES=266, PETRI_TRANSITIONS=431} [2024-06-27 19:07:06,227 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 213 predicate places. [2024-06-27 19:07:06,228 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 431 transitions, 7959 flow [2024-06-27 19:07:06,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:06,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:06,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:06,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:07:06,228 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:06,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:06,229 INFO L85 PathProgramCache]: Analyzing trace with hash -875306126, now seen corresponding path program 3 times [2024-06-27 19:07:06,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:06,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161552008] [2024-06-27 19:07:06,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:06,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:07,357 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 19:07:07,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161552008] [2024-06-27 19:07:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161552008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001252513] [2024-06-27 19:07:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:07,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:07,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:07,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:07:07,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 431 transitions, 7959 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 19:07:07,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:07,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:07:07,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:09,729 INFO L124 PetriNetUnfolderBase]: 6812/10677 cut-off events. [2024-06-27 19:07:09,729 INFO L125 PetriNetUnfolderBase]: For 318891/319269 co-relation queries the response was YES. [2024-06-27 19:07:09,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77353 conditions, 10677 events. 6812/10677 cut-off events. For 318891/319269 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 66437 event pairs, 1658 based on Foata normal form. 25/10166 useless extension candidates. Maximal degree in co-relation 77222. Up to 8650 conditions per place. [2024-06-27 19:07:09,867 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 312 selfloop transitions, 95 changer transitions 0/498 dead transitions. [2024-06-27 19:07:09,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 498 transitions, 9294 flow [2024-06-27 19:07:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:07:09,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:07:09,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-06-27 19:07:09,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-06-27 19:07:09,868 INFO L175 Difference]: Start difference. First operand has 266 places, 431 transitions, 7959 flow. Second operand 8 states and 199 transitions. [2024-06-27 19:07:09,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 498 transitions, 9294 flow [2024-06-27 19:07:10,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 498 transitions, 9139 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:10,705 INFO L231 Difference]: Finished difference. Result has 272 places, 443 transitions, 8290 flow [2024-06-27 19:07:10,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7804, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8290, PETRI_PLACES=272, PETRI_TRANSITIONS=443} [2024-06-27 19:07:10,711 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 219 predicate places. [2024-06-27 19:07:10,711 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 443 transitions, 8290 flow [2024-06-27 19:07:10,711 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 19:07:10,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:10,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:07:10,712 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:10,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash -875098364, now seen corresponding path program 3 times [2024-06-27 19:07:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269848795] [2024-06-27 19:07:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:10,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:11,852 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 19:07:11,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:11,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269848795] [2024-06-27 19:07:11,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269848795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:11,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:11,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:11,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389508698] [2024-06-27 19:07:11,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:11,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:11,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:11,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 443 transitions, 8290 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:11,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:11,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:11,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:14,462 INFO L124 PetriNetUnfolderBase]: 7439/11485 cut-off events. [2024-06-27 19:07:14,463 INFO L125 PetriNetUnfolderBase]: For 331001/331001 co-relation queries the response was YES. [2024-06-27 19:07:14,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83726 conditions, 11485 events. 7439/11485 cut-off events. For 331001/331001 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 70373 event pairs, 1829 based on Foata normal form. 4/11185 useless extension candidates. Maximal degree in co-relation 83592. Up to 9670 conditions per place. [2024-06-27 19:07:14,629 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 423 selfloop transitions, 109 changer transitions 0/539 dead transitions. [2024-06-27 19:07:14,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 539 transitions, 10384 flow [2024-06-27 19:07:14,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:14,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 19:07:14,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 19:07:14,638 INFO L175 Difference]: Start difference. First operand has 272 places, 443 transitions, 8290 flow. Second operand 9 states and 218 transitions. [2024-06-27 19:07:14,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 539 transitions, 10384 flow [2024-06-27 19:07:15,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 539 transitions, 10217 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:15,707 INFO L231 Difference]: Finished difference. Result has 281 places, 473 transitions, 9176 flow [2024-06-27 19:07:15,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8131, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9176, PETRI_PLACES=281, PETRI_TRANSITIONS=473} [2024-06-27 19:07:15,708 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 228 predicate places. [2024-06-27 19:07:15,710 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 473 transitions, 9176 flow [2024-06-27 19:07:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:15,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:15,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:15,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:07:15,711 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:15,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:15,711 INFO L85 PathProgramCache]: Analyzing trace with hash -875300174, now seen corresponding path program 4 times [2024-06-27 19:07:15,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:15,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664607740] [2024-06-27 19:07:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:15,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:15,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:16,867 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 19:07:16,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:16,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664607740] [2024-06-27 19:07:16,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664607740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:16,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:16,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:07:16,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297085288] [2024-06-27 19:07:16,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:16,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:07:16,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:16,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:07:16,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:07:16,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:16,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 473 transitions, 9176 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:16,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:16,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:16,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:19,588 INFO L124 PetriNetUnfolderBase]: 7491/11572 cut-off events. [2024-06-27 19:07:19,589 INFO L125 PetriNetUnfolderBase]: For 355750/355750 co-relation queries the response was YES. [2024-06-27 19:07:19,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86068 conditions, 11572 events. 7491/11572 cut-off events. For 355750/355750 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 70938 event pairs, 1874 based on Foata normal form. 4/11267 useless extension candidates. Maximal degree in co-relation 85929. Up to 9742 conditions per place. [2024-06-27 19:07:19,756 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 428 selfloop transitions, 107 changer transitions 0/542 dead transitions. [2024-06-27 19:07:19,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 542 transitions, 10703 flow [2024-06-27 19:07:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:19,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 19:07:19,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 19:07:19,757 INFO L175 Difference]: Start difference. First operand has 281 places, 473 transitions, 9176 flow. Second operand 9 states and 218 transitions. [2024-06-27 19:07:19,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 542 transitions, 10703 flow [2024-06-27 19:07:20,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 542 transitions, 10551 flow, removed 40 selfloop flow, removed 2 redundant places. [2024-06-27 19:07:20,931 INFO L231 Difference]: Finished difference. Result has 289 places, 478 transitions, 9409 flow [2024-06-27 19:07:20,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9024, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9409, PETRI_PLACES=289, PETRI_TRANSITIONS=478} [2024-06-27 19:07:20,932 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 236 predicate places. [2024-06-27 19:07:20,932 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 478 transitions, 9409 flow [2024-06-27 19:07:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 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 19:07:20,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:20,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:20,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:07:20,933 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:20,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:20,933 INFO L85 PathProgramCache]: Analyzing trace with hash 118811514, now seen corresponding path program 1 times [2024-06-27 19:07:20,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:20,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956349413] [2024-06-27 19:07:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:20,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:21,499 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 19:07:21,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:21,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956349413] [2024-06-27 19:07:21,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956349413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:21,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:21,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:21,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509836017] [2024-06-27 19:07:21,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:21,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:21,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:21,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:21,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:21,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:21,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 478 transitions, 9409 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:21,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:21,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:21,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:24,120 INFO L124 PetriNetUnfolderBase]: 7627/11796 cut-off events. [2024-06-27 19:07:24,120 INFO L125 PetriNetUnfolderBase]: For 381422/381422 co-relation queries the response was YES. [2024-06-27 19:07:24,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88352 conditions, 11796 events. 7627/11796 cut-off events. For 381422/381422 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 72704 event pairs, 2335 based on Foata normal form. 4/11479 useless extension candidates. Maximal degree in co-relation 88210. Up to 10398 conditions per place. [2024-06-27 19:07:24,272 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 461 selfloop transitions, 77 changer transitions 0/545 dead transitions. [2024-06-27 19:07:24,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 545 transitions, 11207 flow [2024-06-27 19:07:24,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:07:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:07:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-06-27 19:07:24,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-06-27 19:07:24,273 INFO L175 Difference]: Start difference. First operand has 289 places, 478 transitions, 9409 flow. Second operand 7 states and 163 transitions. [2024-06-27 19:07:24,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 545 transitions, 11207 flow [2024-06-27 19:07:25,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 545 transitions, 10999 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:25,476 INFO L231 Difference]: Finished difference. Result has 293 places, 498 transitions, 9742 flow [2024-06-27 19:07:25,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9201, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9742, PETRI_PLACES=293, PETRI_TRANSITIONS=498} [2024-06-27 19:07:25,477 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-06-27 19:07:25,477 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 498 transitions, 9742 flow [2024-06-27 19:07:25,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:25,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:25,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:07:25,478 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:25,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:25,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1423938590, now seen corresponding path program 4 times [2024-06-27 19:07:25,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813013465] [2024-06-27 19:07:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:26,766 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 19:07:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:26,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813013465] [2024-06-27 19:07:26,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813013465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:26,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:26,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:26,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900936730] [2024-06-27 19:07:26,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:26,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:26,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:26,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:26,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:26,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-06-27 19:07:26,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 498 transitions, 9742 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:07:26,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:26,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-06-27 19:07:26,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:29,383 INFO L124 PetriNetUnfolderBase]: 7136/11014 cut-off events. [2024-06-27 19:07:29,384 INFO L125 PetriNetUnfolderBase]: For 393468/393707 co-relation queries the response was YES. [2024-06-27 19:07:29,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85247 conditions, 11014 events. 7136/11014 cut-off events. For 393468/393707 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67719 event pairs, 1475 based on Foata normal form. 22/10574 useless extension candidates. Maximal degree in co-relation 85103. Up to 8670 conditions per place. [2024-06-27 19:07:29,534 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 314 selfloop transitions, 136 changer transitions 0/552 dead transitions. [2024-06-27 19:07:29,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 552 transitions, 10996 flow [2024-06-27 19:07:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:07:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:07:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-06-27 19:07:29,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-06-27 19:07:29,536 INFO L175 Difference]: Start difference. First operand has 293 places, 498 transitions, 9742 flow. Second operand 8 states and 195 transitions. [2024-06-27 19:07:29,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 552 transitions, 10996 flow [2024-06-27 19:07:30,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 552 transitions, 10904 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-06-27 19:07:30,749 INFO L231 Difference]: Finished difference. Result has 298 places, 500 transitions, 9978 flow [2024-06-27 19:07:30,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9650, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9978, PETRI_PLACES=298, PETRI_TRANSITIONS=500} [2024-06-27 19:07:30,750 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 245 predicate places. [2024-06-27 19:07:30,750 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 500 transitions, 9978 flow [2024-06-27 19:07:30,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 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 19:07:30,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:30,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:30,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:07:30,751 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:30,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:30,751 INFO L85 PathProgramCache]: Analyzing trace with hash 200339010, now seen corresponding path program 5 times [2024-06-27 19:07:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097966090] [2024-06-27 19:07:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:31,923 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 19:07:31,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:31,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097966090] [2024-06-27 19:07:31,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097966090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:31,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:31,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:31,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739820162] [2024-06-27 19:07:31,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:31,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:31,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:31,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:32,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:32,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 500 transitions, 9978 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:32,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:32,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:32,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:34,735 INFO L124 PetriNetUnfolderBase]: 7692/11692 cut-off events. [2024-06-27 19:07:34,735 INFO L125 PetriNetUnfolderBase]: For 399047/399050 co-relation queries the response was YES. [2024-06-27 19:07:34,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90392 conditions, 11692 events. 7692/11692 cut-off events. For 399047/399050 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 70346 event pairs, 1608 based on Foata normal form. 6/11428 useless extension candidates. Maximal degree in co-relation 90246. Up to 9545 conditions per place. [2024-06-27 19:07:34,901 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 406 selfloop transitions, 156 changer transitions 0/569 dead transitions. [2024-06-27 19:07:34,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 569 transitions, 11590 flow [2024-06-27 19:07:34,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 19:07:34,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 19:07:34,916 INFO L175 Difference]: Start difference. First operand has 298 places, 500 transitions, 9978 flow. Second operand 9 states and 218 transitions. [2024-06-27 19:07:34,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 569 transitions, 11590 flow [2024-06-27 19:07:36,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 569 transitions, 11292 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 19:07:36,243 INFO L231 Difference]: Finished difference. Result has 301 places, 504 transitions, 10102 flow [2024-06-27 19:07:36,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9680, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10102, PETRI_PLACES=301, PETRI_TRANSITIONS=504} [2024-06-27 19:07:36,244 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 248 predicate places. [2024-06-27 19:07:36,244 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 504 transitions, 10102 flow [2024-06-27 19:07:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:36,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:36,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:07:36,245 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:36,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1168419610, now seen corresponding path program 6 times [2024-06-27 19:07:36,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:36,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637423481] [2024-06-27 19:07:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:36,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:37,432 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 19:07:37,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:37,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637423481] [2024-06-27 19:07:37,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637423481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:37,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:37,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305939015] [2024-06-27 19:07:37,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:37,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:37,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:37,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:37,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:37,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:37,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 504 transitions, 10102 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:37,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:37,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:37,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:40,214 INFO L124 PetriNetUnfolderBase]: 7744/11749 cut-off events. [2024-06-27 19:07:40,214 INFO L125 PetriNetUnfolderBase]: For 410587/410590 co-relation queries the response was YES. [2024-06-27 19:07:40,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91560 conditions, 11749 events. 7744/11749 cut-off events. For 410587/410590 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 70515 event pairs, 1547 based on Foata normal form. 6/11490 useless extension candidates. Maximal degree in co-relation 91413. Up to 8922 conditions per place. [2024-06-27 19:07:40,383 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 367 selfloop transitions, 198 changer transitions 0/572 dead transitions. [2024-06-27 19:07:40,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 572 transitions, 11855 flow [2024-06-27 19:07:40,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:40,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:40,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-06-27 19:07:40,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-06-27 19:07:40,385 INFO L175 Difference]: Start difference. First operand has 301 places, 504 transitions, 10102 flow. Second operand 9 states and 220 transitions. [2024-06-27 19:07:40,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 572 transitions, 11855 flow [2024-06-27 19:07:41,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 572 transitions, 11480 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 19:07:41,718 INFO L231 Difference]: Finished difference. Result has 303 places, 508 transitions, 10235 flow [2024-06-27 19:07:41,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9727, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10235, PETRI_PLACES=303, PETRI_TRANSITIONS=508} [2024-06-27 19:07:41,719 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 250 predicate places. [2024-06-27 19:07:41,719 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 508 transitions, 10235 flow [2024-06-27 19:07:41,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:41,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:41,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:41,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:07:41,719 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:41,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:41,720 INFO L85 PathProgramCache]: Analyzing trace with hash 200137200, now seen corresponding path program 7 times [2024-06-27 19:07:41,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:41,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438978896] [2024-06-27 19:07:41,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:41,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:41,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:42,812 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 19:07:42,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:42,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438978896] [2024-06-27 19:07:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438978896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:42,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:42,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:07:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589214416] [2024-06-27 19:07:42,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:42,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:07:42,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:42,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:07:42,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:07:42,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:42,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 508 transitions, 10235 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:42,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:42,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:42,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:45,752 INFO L124 PetriNetUnfolderBase]: 7750/11802 cut-off events. [2024-06-27 19:07:45,752 INFO L125 PetriNetUnfolderBase]: For 428696/428699 co-relation queries the response was YES. [2024-06-27 19:07:45,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92305 conditions, 11802 events. 7750/11802 cut-off events. For 428696/428699 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 71342 event pairs, 1656 based on Foata normal form. 6/11528 useless extension candidates. Maximal degree in co-relation 92157. Up to 8929 conditions per place. [2024-06-27 19:07:45,912 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 375 selfloop transitions, 191 changer transitions 0/573 dead transitions. [2024-06-27 19:07:45,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 573 transitions, 11836 flow [2024-06-27 19:07:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:07:45,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:07:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 218 transitions. [2024-06-27 19:07:45,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2024-06-27 19:07:45,914 INFO L175 Difference]: Start difference. First operand has 303 places, 508 transitions, 10235 flow. Second operand 9 states and 218 transitions. [2024-06-27 19:07:45,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 573 transitions, 11836 flow [2024-06-27 19:07:47,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 573 transitions, 11334 flow, removed 51 selfloop flow, removed 7 redundant places. [2024-06-27 19:07:47,259 INFO L231 Difference]: Finished difference. Result has 305 places, 512 transitions, 10235 flow [2024-06-27 19:07:47,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9747, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10235, PETRI_PLACES=305, PETRI_TRANSITIONS=512} [2024-06-27 19:07:47,260 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-06-27 19:07:47,260 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 512 transitions, 10235 flow [2024-06-27 19:07:47,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 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 19:07:47,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:47,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:47,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:07:47,261 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:47,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 494179558, now seen corresponding path program 2 times [2024-06-27 19:07:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838461780] [2024-06-27 19:07:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:47,784 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 19:07:47,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:47,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838461780] [2024-06-27 19:07:47,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838461780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:47,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:47,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241126554] [2024-06-27 19:07:47,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:47,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:47,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:47,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:47,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:47,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 512 transitions, 10235 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:47,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:47,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:47,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:50,445 INFO L124 PetriNetUnfolderBase]: 7830/12117 cut-off events. [2024-06-27 19:07:50,445 INFO L125 PetriNetUnfolderBase]: For 442444/442444 co-relation queries the response was YES. [2024-06-27 19:07:50,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93247 conditions, 12117 events. 7830/12117 cut-off events. For 442444/442444 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 75052 event pairs, 2387 based on Foata normal form. 4/11786 useless extension candidates. Maximal degree in co-relation 93098. Up to 10625 conditions per place. [2024-06-27 19:07:50,622 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 470 selfloop transitions, 74 changer transitions 0/551 dead transitions. [2024-06-27 19:07:50,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 551 transitions, 11699 flow [2024-06-27 19:07:50,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:07:50,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:07:50,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-06-27 19:07:50,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-06-27 19:07:50,624 INFO L175 Difference]: Start difference. First operand has 305 places, 512 transitions, 10235 flow. Second operand 6 states and 143 transitions. [2024-06-27 19:07:50,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 551 transitions, 11699 flow [2024-06-27 19:07:52,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 551 transitions, 11384 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 19:07:52,114 INFO L231 Difference]: Finished difference. Result has 305 places, 515 transitions, 10130 flow [2024-06-27 19:07:52,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=9920, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10130, PETRI_PLACES=305, PETRI_TRANSITIONS=515} [2024-06-27 19:07:52,114 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 252 predicate places. [2024-06-27 19:07:52,115 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 515 transitions, 10130 flow [2024-06-27 19:07:52,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:52,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:52,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:52,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:07:52,116 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:52,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:52,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1487894946, now seen corresponding path program 3 times [2024-06-27 19:07:52,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:52,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210597931] [2024-06-27 19:07:52,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:52,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:52,760 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 19:07:52,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210597931] [2024-06-27 19:07:52,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210597931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:52,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:52,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:52,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949825834] [2024-06-27 19:07:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:52,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:52,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:52,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:52,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:52,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:52,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 515 transitions, 10130 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:52,816 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:52,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:52,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:07:55,323 INFO L124 PetriNetUnfolderBase]: 7858/12172 cut-off events. [2024-06-27 19:07:55,323 INFO L125 PetriNetUnfolderBase]: For 445685/445685 co-relation queries the response was YES. [2024-06-27 19:07:55,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92592 conditions, 12172 events. 7858/12172 cut-off events. For 445685/445685 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 75610 event pairs, 2412 based on Foata normal form. 4/11836 useless extension candidates. Maximal degree in co-relation 92442. Up to 10859 conditions per place. [2024-06-27 19:07:55,523 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 478 selfloop transitions, 67 changer transitions 0/552 dead transitions. [2024-06-27 19:07:55,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 552 transitions, 11584 flow [2024-06-27 19:07:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:07:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:07:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-06-27 19:07:55,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-06-27 19:07:55,525 INFO L175 Difference]: Start difference. First operand has 305 places, 515 transitions, 10130 flow. Second operand 5 states and 121 transitions. [2024-06-27 19:07:55,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 552 transitions, 11584 flow [2024-06-27 19:07:56,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 552 transitions, 11459 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-27 19:07:56,989 INFO L231 Difference]: Finished difference. Result has 306 places, 526 transitions, 10448 flow [2024-06-27 19:07:56,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10022, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10448, PETRI_PLACES=306, PETRI_TRANSITIONS=526} [2024-06-27 19:07:56,989 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 253 predicate places. [2024-06-27 19:07:56,990 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 526 transitions, 10448 flow [2024-06-27 19:07:56,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:56,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:07:56,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:07:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:07:56,991 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:07:56,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:07:56,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2097183023, now seen corresponding path program 1 times [2024-06-27 19:07:56,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:07:56,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139055165] [2024-06-27 19:07:56,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:07:56,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:07:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:07:57,528 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 19:07:57,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:07:57,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139055165] [2024-06-27 19:07:57,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139055165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:07:57,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:07:57,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:07:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377673348] [2024-06-27 19:07:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:07:57,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:07:57,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:07:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:07:57,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:07:57,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:07:57,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 526 transitions, 10448 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:07:57,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:07:57,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:07:57,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:00,156 INFO L124 PetriNetUnfolderBase]: 7972/12354 cut-off events. [2024-06-27 19:08:00,156 INFO L125 PetriNetUnfolderBase]: For 459867/459867 co-relation queries the response was YES. [2024-06-27 19:08:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94199 conditions, 12354 events. 7972/12354 cut-off events. For 459867/459867 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 77081 event pairs, 2478 based on Foata normal form. 3/12010 useless extension candidates. Maximal degree in co-relation 94049. Up to 11101 conditions per place. [2024-06-27 19:08:00,325 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 535 selfloop transitions, 33 changer transitions 0/575 dead transitions. [2024-06-27 19:08:00,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 575 transitions, 12140 flow [2024-06-27 19:08:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-06-27 19:08:00,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-06-27 19:08:00,326 INFO L175 Difference]: Start difference. First operand has 306 places, 526 transitions, 10448 flow. Second operand 7 states and 160 transitions. [2024-06-27 19:08:00,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 575 transitions, 12140 flow [2024-06-27 19:08:01,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 575 transitions, 12027 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:01,939 INFO L231 Difference]: Finished difference. Result has 310 places, 532 transitions, 10510 flow [2024-06-27 19:08:01,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10335, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10510, PETRI_PLACES=310, PETRI_TRANSITIONS=532} [2024-06-27 19:08:01,940 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-06-27 19:08:01,940 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 532 transitions, 10510 flow [2024-06-27 19:08:01,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:01,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:01,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:01,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:08:01,940 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:01,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2097302993, now seen corresponding path program 2 times [2024-06-27 19:08:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371442979] [2024-06-27 19:08:01,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:01,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:02,443 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 19:08:02,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:02,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371442979] [2024-06-27 19:08:02,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371442979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:02,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:02,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:02,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183168256] [2024-06-27 19:08:02,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:02,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:02,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:02,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:02,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:02,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 532 transitions, 10510 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:02,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:02,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:02,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:05,261 INFO L124 PetriNetUnfolderBase]: 8092/12531 cut-off events. [2024-06-27 19:08:05,262 INFO L125 PetriNetUnfolderBase]: For 477221/477221 co-relation queries the response was YES. [2024-06-27 19:08:05,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96366 conditions, 12531 events. 8092/12531 cut-off events. For 477221/477221 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78177 event pairs, 2486 based on Foata normal form. 3/12182 useless extension candidates. Maximal degree in co-relation 96215. Up to 11294 conditions per place. [2024-06-27 19:08:05,433 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 542 selfloop transitions, 33 changer transitions 0/582 dead transitions. [2024-06-27 19:08:05,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 582 transitions, 12150 flow [2024-06-27 19:08:05,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:08:05,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:08:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-06-27 19:08:05,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-06-27 19:08:05,434 INFO L175 Difference]: Start difference. First operand has 310 places, 532 transitions, 10510 flow. Second operand 7 states and 155 transitions. [2024-06-27 19:08:05,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 582 transitions, 12150 flow [2024-06-27 19:08:06,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 582 transitions, 12053 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:06,975 INFO L231 Difference]: Finished difference. Result has 314 places, 542 transitions, 10626 flow [2024-06-27 19:08:06,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10430, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10626, PETRI_PLACES=314, PETRI_TRANSITIONS=542} [2024-06-27 19:08:06,975 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 261 predicate places. [2024-06-27 19:08:06,975 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 542 transitions, 10626 flow [2024-06-27 19:08:06,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:06,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:06,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:06,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:08:06,976 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:06,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1191151343, now seen corresponding path program 3 times [2024-06-27 19:08:06,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:06,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517478562] [2024-06-27 19:08:06,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:06,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:07,428 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 19:08:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517478562] [2024-06-27 19:08:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517478562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:07,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:07,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782740013] [2024-06-27 19:08:07,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:07,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:07,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 542 transitions, 10626 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:07,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:07,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:07,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:10,154 INFO L124 PetriNetUnfolderBase]: 8083/12522 cut-off events. [2024-06-27 19:08:10,155 INFO L125 PetriNetUnfolderBase]: For 480777/480777 co-relation queries the response was YES. [2024-06-27 19:08:10,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96091 conditions, 12522 events. 8083/12522 cut-off events. For 480777/480777 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 78187 event pairs, 2485 based on Foata normal form. 3/12172 useless extension candidates. Maximal degree in co-relation 95938. Up to 11302 conditions per place. [2024-06-27 19:08:10,328 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 537 selfloop transitions, 32 changer transitions 0/576 dead transitions. [2024-06-27 19:08:10,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 576 transitions, 12042 flow [2024-06-27 19:08:10,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:08:10,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:08:10,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-27 19:08:10,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-06-27 19:08:10,329 INFO L175 Difference]: Start difference. First operand has 314 places, 542 transitions, 10626 flow. Second operand 6 states and 138 transitions. [2024-06-27 19:08:10,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 576 transitions, 12042 flow [2024-06-27 19:08:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 576 transitions, 11936 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-27 19:08:11,914 INFO L231 Difference]: Finished difference. Result has 316 places, 542 transitions, 10600 flow [2024-06-27 19:08:11,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10520, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10600, PETRI_PLACES=316, PETRI_TRANSITIONS=542} [2024-06-27 19:08:11,915 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-06-27 19:08:11,915 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 542 transitions, 10600 flow [2024-06-27 19:08:11,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:11,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:11,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:11,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:08:11,915 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:11,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:11,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1487901921, now seen corresponding path program 1 times [2024-06-27 19:08:11,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356644643] [2024-06-27 19:08:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:12,539 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 19:08:12,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:12,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356644643] [2024-06-27 19:08:12,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356644643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:12,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:12,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:08:12,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527909879] [2024-06-27 19:08:12,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:12,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:08:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:08:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:08:12,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:12,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 542 transitions, 10600 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:12,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:12,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:12,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:15,374 INFO L124 PetriNetUnfolderBase]: 8077/12508 cut-off events. [2024-06-27 19:08:15,374 INFO L125 PetriNetUnfolderBase]: For 486835/486835 co-relation queries the response was YES. [2024-06-27 19:08:15,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95818 conditions, 12508 events. 8077/12508 cut-off events. For 486835/486835 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 78034 event pairs, 2422 based on Foata normal form. 2/12159 useless extension candidates. Maximal degree in co-relation 95664. Up to 11243 conditions per place. [2024-06-27 19:08:15,563 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 515 selfloop transitions, 47 changer transitions 0/569 dead transitions. [2024-06-27 19:08:15,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 569 transitions, 11964 flow [2024-06-27 19:08:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:08:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:08:15,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-06-27 19:08:15,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4978723404255319 [2024-06-27 19:08:15,565 INFO L175 Difference]: Start difference. First operand has 316 places, 542 transitions, 10600 flow. Second operand 5 states and 117 transitions. [2024-06-27 19:08:15,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 569 transitions, 11964 flow [2024-06-27 19:08:17,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 569 transitions, 11888 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:08:17,156 INFO L231 Difference]: Finished difference. Result has 316 places, 545 transitions, 10714 flow [2024-06-27 19:08:17,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10524, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10714, PETRI_PLACES=316, PETRI_TRANSITIONS=545} [2024-06-27 19:08:17,156 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 263 predicate places. [2024-06-27 19:08:17,157 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 545 transitions, 10714 flow [2024-06-27 19:08:17,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 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 19:08:17,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:17,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:17,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:08:17,157 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:17,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1487911810, now seen corresponding path program 1 times [2024-06-27 19:08:17,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:17,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677634598] [2024-06-27 19:08:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:18,139 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 19:08:18,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:18,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677634598] [2024-06-27 19:08:18,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677634598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:18,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:18,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:08:18,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908436372] [2024-06-27 19:08:18,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:18,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:08:18,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:18,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:08:18,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:08:18,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:18,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 545 transitions, 10714 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 19:08:18,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:18,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:18,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:20,966 INFO L124 PetriNetUnfolderBase]: 8072/12498 cut-off events. [2024-06-27 19:08:20,967 INFO L125 PetriNetUnfolderBase]: For 497503/497503 co-relation queries the response was YES. [2024-06-27 19:08:21,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96739 conditions, 12498 events. 8072/12498 cut-off events. For 497503/497503 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 77706 event pairs, 2521 based on Foata normal form. 2/12150 useless extension candidates. Maximal degree in co-relation 96584. Up to 11350 conditions per place. [2024-06-27 19:08:21,149 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 539 selfloop transitions, 20 changer transitions 0/566 dead transitions. [2024-06-27 19:08:21,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 566 transitions, 12014 flow [2024-06-27 19:08:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:08:21,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:08:21,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-06-27 19:08:21,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4723404255319149 [2024-06-27 19:08:21,151 INFO L175 Difference]: Start difference. First operand has 316 places, 545 transitions, 10714 flow. Second operand 5 states and 111 transitions. [2024-06-27 19:08:21,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 566 transitions, 12014 flow [2024-06-27 19:08:22,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 566 transitions, 11936 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:22,619 INFO L231 Difference]: Finished difference. Result has 318 places, 547 transitions, 10719 flow [2024-06-27 19:08:22,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10636, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10719, PETRI_PLACES=318, PETRI_TRANSITIONS=547} [2024-06-27 19:08:22,620 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 265 predicate places. [2024-06-27 19:08:22,620 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 547 transitions, 10719 flow [2024-06-27 19:08:22,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 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 19:08:22,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:22,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:22,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:08:22,620 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:22,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:22,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1512201548, now seen corresponding path program 1 times [2024-06-27 19:08:22,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:22,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556144270] [2024-06-27 19:08:22,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:22,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:23,856 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 19:08:23,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:23,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556144270] [2024-06-27 19:08:23,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556144270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:23,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:23,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:08:23,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416709697] [2024-06-27 19:08:23,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:23,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:08:23,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:08:23,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:08:23,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:23,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 547 transitions, 10719 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 19:08:23,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:23,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:23,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:26,872 INFO L124 PetriNetUnfolderBase]: 8114/12555 cut-off events. [2024-06-27 19:08:26,873 INFO L125 PetriNetUnfolderBase]: For 503759/503759 co-relation queries the response was YES. [2024-06-27 19:08:26,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97605 conditions, 12555 events. 8114/12555 cut-off events. For 503759/503759 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 78192 event pairs, 1689 based on Foata normal form. 4/12208 useless extension candidates. Maximal degree in co-relation 97449. Up to 11086 conditions per place. [2024-06-27 19:08:27,056 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 540 selfloop transitions, 70 changer transitions 0/617 dead transitions. [2024-06-27 19:08:27,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 617 transitions, 12385 flow [2024-06-27 19:08:27,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-06-27 19:08:27,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-06-27 19:08:27,058 INFO L175 Difference]: Start difference. First operand has 318 places, 547 transitions, 10719 flow. Second operand 9 states and 212 transitions. [2024-06-27 19:08:27,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 617 transitions, 12385 flow [2024-06-27 19:08:28,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 617 transitions, 12322 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:28,672 INFO L231 Difference]: Finished difference. Result has 326 places, 555 transitions, 10954 flow [2024-06-27 19:08:28,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10656, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10954, PETRI_PLACES=326, PETRI_TRANSITIONS=555} [2024-06-27 19:08:28,673 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 273 predicate places. [2024-06-27 19:08:28,673 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 555 transitions, 10954 flow [2024-06-27 19:08:28,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 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 19:08:28,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:28,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:28,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:08:28,674 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:28,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1510294118, now seen corresponding path program 2 times [2024-06-27 19:08:28,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:28,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414265960] [2024-06-27 19:08:28,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:28,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:30,561 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 19:08:30,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:30,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414265960] [2024-06-27 19:08:30,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414265960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:30,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:30,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:08:30,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080629921] [2024-06-27 19:08:30,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:30,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:08:30,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:30,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:08:30,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:08:30,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:30,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 555 transitions, 10954 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:30,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:30,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:30,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:33,803 INFO L124 PetriNetUnfolderBase]: 8196/12649 cut-off events. [2024-06-27 19:08:33,803 INFO L125 PetriNetUnfolderBase]: For 523047/523047 co-relation queries the response was YES. [2024-06-27 19:08:33,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99765 conditions, 12649 events. 8196/12649 cut-off events. For 523047/523047 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 78610 event pairs, 1993 based on Foata normal form. 4/12310 useless extension candidates. Maximal degree in co-relation 99606. Up to 11097 conditions per place. [2024-06-27 19:08:33,978 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 543 selfloop transitions, 87 changer transitions 0/637 dead transitions. [2024-06-27 19:08:33,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 637 transitions, 13155 flow [2024-06-27 19:08:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-06-27 19:08:33,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-06-27 19:08:33,980 INFO L175 Difference]: Start difference. First operand has 326 places, 555 transitions, 10954 flow. Second operand 9 states and 210 transitions. [2024-06-27 19:08:33,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 637 transitions, 13155 flow [2024-06-27 19:08:35,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 637 transitions, 13039 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:35,710 INFO L231 Difference]: Finished difference. Result has 334 places, 579 transitions, 11845 flow [2024-06-27 19:08:35,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=10838, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11845, PETRI_PLACES=334, PETRI_TRANSITIONS=579} [2024-06-27 19:08:35,711 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 281 predicate places. [2024-06-27 19:08:35,711 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 579 transitions, 11845 flow [2024-06-27 19:08:35,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:35,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:35,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:35,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:08:35,712 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:35,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1510298768, now seen corresponding path program 3 times [2024-06-27 19:08:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:35,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59235508] [2024-06-27 19:08:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:37,572 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 19:08:37,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:37,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59235508] [2024-06-27 19:08:37,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59235508] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:37,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:37,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:08:37,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63859733] [2024-06-27 19:08:37,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:37,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:08:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:08:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:08:37,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:37,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 579 transitions, 11845 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:37,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:37,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:37,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:41,249 INFO L124 PetriNetUnfolderBase]: 8259/12742 cut-off events. [2024-06-27 19:08:41,249 INFO L125 PetriNetUnfolderBase]: For 552175/552175 co-relation queries the response was YES. [2024-06-27 19:08:41,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102028 conditions, 12742 events. 8259/12742 cut-off events. For 552175/552175 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 79286 event pairs, 1978 based on Foata normal form. 4/12403 useless extension candidates. Maximal degree in co-relation 101865. Up to 11084 conditions per place. [2024-06-27 19:08:41,755 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 547 selfloop transitions, 90 changer transitions 0/644 dead transitions. [2024-06-27 19:08:41,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 644 transitions, 13517 flow [2024-06-27 19:08:41,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-06-27 19:08:41,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-06-27 19:08:41,757 INFO L175 Difference]: Start difference. First operand has 334 places, 579 transitions, 11845 flow. Second operand 9 states and 211 transitions. [2024-06-27 19:08:41,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 644 transitions, 13517 flow [2024-06-27 19:08:43,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 644 transitions, 13200 flow, removed 140 selfloop flow, removed 3 redundant places. [2024-06-27 19:08:43,750 INFO L231 Difference]: Finished difference. Result has 341 places, 586 transitions, 11942 flow [2024-06-27 19:08:43,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11528, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11942, PETRI_PLACES=341, PETRI_TRANSITIONS=586} [2024-06-27 19:08:43,751 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 288 predicate places. [2024-06-27 19:08:43,751 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 586 transitions, 11942 flow [2024-06-27 19:08:43,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:43,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:43,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:43,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:08:43,752 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:43,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:43,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1422528654, now seen corresponding path program 1 times [2024-06-27 19:08:43,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:43,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212462872] [2024-06-27 19:08:43,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:43,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:45,108 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 19:08:45,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:45,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212462872] [2024-06-27 19:08:45,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212462872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:45,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:45,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:08:45,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488479733] [2024-06-27 19:08:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:45,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:08:45,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:08:45,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:08:45,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:45,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 586 transitions, 11942 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:45,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:45,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:45,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:49,258 INFO L124 PetriNetUnfolderBase]: 8459/13064 cut-off events. [2024-06-27 19:08:49,259 INFO L125 PetriNetUnfolderBase]: For 600734/600734 co-relation queries the response was YES. [2024-06-27 19:08:49,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104922 conditions, 13064 events. 8459/13064 cut-off events. For 600734/600734 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 81821 event pairs, 2012 based on Foata normal form. 20/12735 useless extension candidates. Maximal degree in co-relation 104756. Up to 11231 conditions per place. [2024-06-27 19:08:49,442 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 565 selfloop transitions, 90 changer transitions 0/662 dead transitions. [2024-06-27 19:08:49,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 662 transitions, 13616 flow [2024-06-27 19:08:49,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:08:49,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:08:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-06-27 19:08:49,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.502127659574468 [2024-06-27 19:08:49,443 INFO L175 Difference]: Start difference. First operand has 341 places, 586 transitions, 11942 flow. Second operand 10 states and 236 transitions. [2024-06-27 19:08:49,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 662 transitions, 13616 flow [2024-06-27 19:08:51,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 662 transitions, 13280 flow, removed 124 selfloop flow, removed 4 redundant places. [2024-06-27 19:08:51,734 INFO L231 Difference]: Finished difference. Result has 348 places, 591 transitions, 11916 flow [2024-06-27 19:08:51,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11608, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11916, PETRI_PLACES=348, PETRI_TRANSITIONS=591} [2024-06-27 19:08:51,735 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 295 predicate places. [2024-06-27 19:08:51,735 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 591 transitions, 11916 flow [2024-06-27 19:08:51,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:51,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:51,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:51,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:08:51,736 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:51,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:51,736 INFO L85 PathProgramCache]: Analyzing trace with hash -467920768, now seen corresponding path program 4 times [2024-06-27 19:08:51,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:51,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507656525] [2024-06-27 19:08:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:51,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:08:52,823 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 19:08:52,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:08:52,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507656525] [2024-06-27 19:08:52,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507656525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:08:52,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:08:52,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:08:52,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004848563] [2024-06-27 19:08:52,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:08:52,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:08:52,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:08:52,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:08:52,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:08:52,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:08:52,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 591 transitions, 11916 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:52,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:08:52,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:08:52,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:08:56,995 INFO L124 PetriNetUnfolderBase]: 8501/13102 cut-off events. [2024-06-27 19:08:56,995 INFO L125 PetriNetUnfolderBase]: For 590700/590700 co-relation queries the response was YES. [2024-06-27 19:08:57,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105572 conditions, 13102 events. 8501/13102 cut-off events. For 590700/590700 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 81848 event pairs, 1903 based on Foata normal form. 4/12764 useless extension candidates. Maximal degree in co-relation 105402. Up to 11019 conditions per place. [2024-06-27 19:08:57,160 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 501 selfloop transitions, 147 changer transitions 0/655 dead transitions. [2024-06-27 19:08:57,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 655 transitions, 13644 flow [2024-06-27 19:08:57,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:08:57,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:08:57,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 19:08:57,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 19:08:57,161 INFO L175 Difference]: Start difference. First operand has 348 places, 591 transitions, 11916 flow. Second operand 9 states and 213 transitions. [2024-06-27 19:08:57,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 655 transitions, 13644 flow [2024-06-27 19:08:58,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 655 transitions, 13422 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 19:08:58,967 INFO L231 Difference]: Finished difference. Result has 350 places, 593 transitions, 12060 flow [2024-06-27 19:08:58,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11694, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12060, PETRI_PLACES=350, PETRI_TRANSITIONS=593} [2024-06-27 19:08:58,968 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 297 predicate places. [2024-06-27 19:08:58,968 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 593 transitions, 12060 flow [2024-06-27 19:08:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:08:58,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:08:58,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:08:58,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:08:58,969 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:08:58,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:08:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2115948624, now seen corresponding path program 5 times [2024-06-27 19:08:58,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:08:58,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34331366] [2024-06-27 19:08:58,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:08:58,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:08:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:00,186 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 19:09:00,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:00,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34331366] [2024-06-27 19:09:00,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34331366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:00,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:00,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:09:00,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669705965] [2024-06-27 19:09:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:00,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:09:00,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:00,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:09:00,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:09:00,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:09:00,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 593 transitions, 12060 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:09:00,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:00,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:09:00,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:04,357 INFO L124 PetriNetUnfolderBase]: 8614/13269 cut-off events. [2024-06-27 19:09:04,357 INFO L125 PetriNetUnfolderBase]: For 620719/620719 co-relation queries the response was YES. [2024-06-27 19:09:04,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107890 conditions, 13269 events. 8614/13269 cut-off events. For 620719/620719 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 83010 event pairs, 1904 based on Foata normal form. 4/12931 useless extension candidates. Maximal degree in co-relation 107719. Up to 11206 conditions per place. [2024-06-27 19:09:04,549 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 540 selfloop transitions, 119 changer transitions 0/666 dead transitions. [2024-06-27 19:09:04,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 666 transitions, 14144 flow [2024-06-27 19:09:04,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:09:04,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:09:04,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-06-27 19:09:04,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-06-27 19:09:04,550 INFO L175 Difference]: Start difference. First operand has 350 places, 593 transitions, 12060 flow. Second operand 9 states and 219 transitions. [2024-06-27 19:09:04,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 666 transitions, 14144 flow [2024-06-27 19:09:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 666 transitions, 13811 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:06,753 INFO L231 Difference]: Finished difference. Result has 354 places, 600 transitions, 12192 flow [2024-06-27 19:09:06,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11765, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12192, PETRI_PLACES=354, PETRI_TRANSITIONS=600} [2024-06-27 19:09:06,754 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 301 predicate places. [2024-06-27 19:09:06,755 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 600 transitions, 12192 flow [2024-06-27 19:09:06,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:09:06,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:06,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:06,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:09:06,755 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:06,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2127948910, now seen corresponding path program 6 times [2024-06-27 19:09:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923029233] [2024-06-27 19:09:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:08,017 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 19:09:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923029233] [2024-06-27 19:09:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923029233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:08,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:08,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:09:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609063176] [2024-06-27 19:09:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:08,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:09:08,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:08,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:09:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:09:08,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:09:08,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 600 transitions, 12192 flow. Second operand has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:09:08,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:08,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:09:08,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:12,226 INFO L124 PetriNetUnfolderBase]: 8619/13288 cut-off events. [2024-06-27 19:09:12,227 INFO L125 PetriNetUnfolderBase]: For 629309/629309 co-relation queries the response was YES. [2024-06-27 19:09:12,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108268 conditions, 13288 events. 8619/13288 cut-off events. For 629309/629309 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 83205 event pairs, 1917 based on Foata normal form. 4/12946 useless extension candidates. Maximal degree in co-relation 108095. Up to 11186 conditions per place. [2024-06-27 19:09:12,396 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 504 selfloop transitions, 156 changer transitions 0/667 dead transitions. [2024-06-27 19:09:12,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 667 transitions, 14037 flow [2024-06-27 19:09:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:09:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:09:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-06-27 19:09:12,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-06-27 19:09:12,398 INFO L175 Difference]: Start difference. First operand has 354 places, 600 transitions, 12192 flow. Second operand 9 states and 213 transitions. [2024-06-27 19:09:12,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 667 transitions, 14037 flow [2024-06-27 19:09:14,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 667 transitions, 13839 flow, removed 43 selfloop flow, removed 4 redundant places. [2024-06-27 19:09:14,490 INFO L231 Difference]: Finished difference. Result has 359 places, 603 transitions, 12425 flow [2024-06-27 19:09:14,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12004, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12425, PETRI_PLACES=359, PETRI_TRANSITIONS=603} [2024-06-27 19:09:14,492 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 306 predicate places. [2024-06-27 19:09:14,492 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 603 transitions, 12425 flow [2024-06-27 19:09:14,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.25) internal successors, (135), 12 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 19:09:14,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:14,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:14,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:09:14,492 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:14,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:14,495 INFO L85 PathProgramCache]: Analyzing trace with hash -461245724, now seen corresponding path program 2 times [2024-06-27 19:09:14,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:14,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180175185] [2024-06-27 19:09:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:14,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:14,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:15,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:09:15,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:15,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180175185] [2024-06-27 19:09:15,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180175185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:15,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:15,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:09:15,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614042819] [2024-06-27 19:09:15,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:15,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:09:15,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:15,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:09:15,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:09:15,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:09:15,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 603 transitions, 12425 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:15,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:15,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:09:15,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:09:19,966 INFO L124 PetriNetUnfolderBase]: 9009/13882 cut-off events. [2024-06-27 19:09:19,966 INFO L125 PetriNetUnfolderBase]: For 707488/707500 co-relation queries the response was YES. [2024-06-27 19:09:20,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114749 conditions, 13882 events. 9009/13882 cut-off events. For 707488/707500 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 87470 event pairs, 1440 based on Foata normal form. 20/13544 useless extension candidates. Maximal degree in co-relation 114573. Up to 9495 conditions per place. [2024-06-27 19:09:20,179 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 424 selfloop transitions, 251 changer transitions 0/682 dead transitions. [2024-06-27 19:09:20,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 682 transitions, 14626 flow [2024-06-27 19:09:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:09:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:09:20,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-06-27 19:09:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-06-27 19:09:20,180 INFO L175 Difference]: Start difference. First operand has 359 places, 603 transitions, 12425 flow. Second operand 9 states and 226 transitions. [2024-06-27 19:09:20,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 682 transitions, 14626 flow [2024-06-27 19:09:22,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 682 transitions, 14338 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 19:09:22,459 INFO L231 Difference]: Finished difference. Result has 363 places, 607 transitions, 12833 flow [2024-06-27 19:09:22,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12137, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=248, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12833, PETRI_PLACES=363, PETRI_TRANSITIONS=607} [2024-06-27 19:09:22,460 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 310 predicate places. [2024-06-27 19:09:22,460 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 607 transitions, 12833 flow [2024-06-27 19:09:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:22,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:09:22,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:09:22,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:09:22,461 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-06-27 19:09:22,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:09:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1413315384, now seen corresponding path program 3 times [2024-06-27 19:09:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:09:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381787882] [2024-06-27 19:09:22,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:09:22,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:09:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:09:23,579 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 19:09:23,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:09:23,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381787882] [2024-06-27 19:09:23,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381787882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:09:23,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:09:23,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:09:23,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398660870] [2024-06-27 19:09:23,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:09:23,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:09:23,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:09:23,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:09:23,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:09:23,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-06-27 19:09:23,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 607 transitions, 12833 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:09:23,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:09:23,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-06-27 19:09:23,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand