./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:37:16,891 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:37:16,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:37:16,943 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:37:16,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:37:16,970 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:37:16,971 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:37:16,971 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:37:16,972 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:37:16,974 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:37:16,975 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:37:16,975 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:37:16,976 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:37:16,977 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:37:16,977 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:37:16,977 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:37:16,977 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:37:16,977 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:37:16,978 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:37:16,978 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:37:16,978 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:37:16,978 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:37:16,979 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:37:16,980 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:37:16,980 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:37:16,981 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:37:16,981 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:37:16,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:16,981 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:37:16,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:37:16,983 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:37:16,983 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:37:16,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:37:16,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:37:17,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:37:17,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:37:17,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:37:17,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:37:17,224 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:37:17,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:37:18,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:37:18,460 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:37:18,464 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:37:18,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9394351/3420b503e1f84335942b153c89de8347/FLAG2043b9e92 [2024-06-28 01:37:18,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b9394351/3420b503e1f84335942b153c89de8347 [2024-06-28 01:37:18,494 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:37:18,495 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:37:18,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:37:18,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:37:18,607 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:37:18,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:18,608 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:37:18,612 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:37:18,613 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:18" (1/2) ... [2024-06-28 01:37:18,614 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527fe4d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:18, skipping insertion in model container [2024-06-28 01:37:18,614 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:37:18" (1/2) ... [2024-06-28 01:37:18,615 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@643fd938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:37:18, skipping insertion in model container [2024-06-28 01:37:18,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:18" (2/2) ... [2024-06-28 01:37:18,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@527fe4d7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:18, skipping insertion in model container [2024-06-28 01:37:18,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:18" (2/2) ... [2024-06-28 01:37:18,616 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:37:18,668 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:37:18,670 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:37:18,670 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && (z == 0 || z == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:37:18,670 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:37:18,670 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-28 01:37:18,707 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:37:18,859 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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-28 01:37:19,056 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:19,065 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:37:19,095 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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:37:19,150 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:37:19,184 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:37:19,184 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19 WrapperNode [2024-06-28 01:37:19,185 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:37:19,185 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:19,186 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:37:19,186 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:37:19,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,239 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-28 01:37:19,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:37:19,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:37:19,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:37:19,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:37:19,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,249 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,258 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,285 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]. [2024-06-28 01:37:19,286 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,286 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,311 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,313 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,319 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:37:19,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:37:19,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:37:19,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:37:19,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (1/1) ... [2024-06-28 01:37:19,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:37:19,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:37:19,349 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) [2024-06-28 01:37:19,353 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 [2024-06-28 01:37:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:37:19,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:37:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:37:19,381 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:37:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:37:19,381 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:37:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:37:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:37:19,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:37:19,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:37:19,383 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:37:19,510 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:37:19,512 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:37:19,798 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:37:19,798 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:37:19,945 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:37:19,946 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:37:19,947 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:19 BoogieIcfgContainer [2024-06-28 01:37:19,947 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:37:19,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:37:19,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:37:19,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:37:19,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:37:18" (1/4) ... [2024-06-28 01:37:19,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468f9e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:37:19, skipping insertion in model container [2024-06-28 01:37:19,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:37:18" (2/4) ... [2024-06-28 01:37:19,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468f9e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:37:19, skipping insertion in model container [2024-06-28 01:37:19,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:37:19" (3/4) ... [2024-06-28 01:37:19,959 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7468f9e6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:37:19, skipping insertion in model container [2024-06-28 01:37:19,959 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:37:19" (4/4) ... [2024-06-28 01:37:19,960 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:37:19,974 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:37:19,974 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:37:19,975 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:37:20,002 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:37:20,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:37:20,046 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:37:20,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:37:20,050 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:37:20,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:37:20,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:37:20,063 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;@39f64587, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:37:20,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:37:20,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:37:20,067 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:37:20,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:37:20,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:20,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:37:20,068 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:20,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 313150133, now seen corresponding path program 1 times [2024-06-28 01:37:20,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:20,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520761283] [2024-06-28 01:37:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:20,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:20,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:20,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:20,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520761283] [2024-06-28 01:37:20,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520761283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:20,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:20,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:20,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928780713] [2024-06-28 01:37:20,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:20,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:20,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:37:20,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:20,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:37:20,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:21,222 INFO L124 PetriNetUnfolderBase]: 543/1069 cut-off events. [2024-06-28 01:37:21,222 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:37:21,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1069 events. 543/1069 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5921 event pairs, 424 based on Foata normal form. 43/1003 useless extension candidates. Maximal degree in co-relation 1978. Up to 892 conditions per place. [2024-06-28 01:37:21,232 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:37:21,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-28 01:37:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:37:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:37:21,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:37:21,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-28 01:37:21,244 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:37:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-28 01:37:21,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:21,250 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:37:21,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:37:21,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:37:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:37:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:21,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:21,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:21,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:37:21,255 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:21,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:21,256 INFO L85 PathProgramCache]: Analyzing trace with hash 289967898, now seen corresponding path program 1 times [2024-06-28 01:37:21,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:21,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609317536] [2024-06-28 01:37:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:21,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:21,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:21,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:21,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:21,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609317536] [2024-06-28 01:37:21,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609317536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:21,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:21,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:37:21,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056646752] [2024-06-28 01:37:21,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:37:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:37:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:37:21,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:37:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:21,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:21,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:37:21,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:21,944 INFO L124 PetriNetUnfolderBase]: 621/1091 cut-off events. [2024-06-28 01:37:21,944 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-28 01:37:21,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1091 events. 621/1091 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5521 event pairs, 273 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2356. Up to 997 conditions per place. [2024-06-28 01:37:21,951 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 42 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 01:37:21,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 248 flow [2024-06-28 01:37:21,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:37:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:37:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-28 01:37:21,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-28 01:37:21,955 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 95 transitions. [2024-06-28 01:37:21,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 248 flow [2024-06-28 01:37:21,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:37:21,958 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-28 01:37:21,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:37:21,959 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 01:37:21,960 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-28 01:37:21,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:21,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:21,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:21,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:37:21,961 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:21,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:21,965 INFO L85 PathProgramCache]: Analyzing trace with hash 399071120, now seen corresponding path program 1 times [2024-06-28 01:37:21,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:21,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456522146] [2024-06-28 01:37:21,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:21,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:22,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:22,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456522146] [2024-06-28 01:37:22,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456522146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:22,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:22,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:37:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84711180] [2024-06-28 01:37:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:37:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:37:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:37:22,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:37:22,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:22,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:37:22,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:22,611 INFO L124 PetriNetUnfolderBase]: 613/1171 cut-off events. [2024-06-28 01:37:22,612 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-28 01:37:22,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1171 events. 613/1171 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6449 event pairs, 197 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 2626. Up to 968 conditions per place. [2024-06-28 01:37:22,620 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-28 01:37:22,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 360 flow [2024-06-28 01:37:22,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:37:22,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:37:22,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-28 01:37:22,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-06-28 01:37:22,625 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 113 transitions. [2024-06-28 01:37:22,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 360 flow [2024-06-28 01:37:22,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 334 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:22,639 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 231 flow [2024-06-28 01:37:22,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-06-28 01:37:22,641 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:37:22,641 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 231 flow [2024-06-28 01:37:22,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:22,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:22,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:37:22,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:22,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:22,643 INFO L85 PathProgramCache]: Analyzing trace with hash 386992459, now seen corresponding path program 1 times [2024-06-28 01:37:22,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:22,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365830959] [2024-06-28 01:37:22,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:22,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:22,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:22,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365830959] [2024-06-28 01:37:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365830959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:37:22,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772751940] [2024-06-28 01:37:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:37:22,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:37:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:37:22,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-28 01:37:22,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:22,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-28 01:37:22,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:22,800 INFO L124 PetriNetUnfolderBase]: 191/559 cut-off events. [2024-06-28 01:37:22,801 INFO L125 PetriNetUnfolderBase]: For 288/314 co-relation queries the response was YES. [2024-06-28 01:37:22,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 559 events. 191/559 cut-off events. For 288/314 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3541 event pairs, 48 based on Foata normal form. 10/532 useless extension candidates. Maximal degree in co-relation 1125. Up to 286 conditions per place. [2024-06-28 01:37:22,805 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 01:37:22,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 270 flow [2024-06-28 01:37:22,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:37:22,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:37:22,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:37:22,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-06-28 01:37:22,806 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 231 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:37:22,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 270 flow [2024-06-28 01:37:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:37:22,811 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 198 flow [2024-06-28 01:37:22,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-28 01:37:22,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 01:37:22,813 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 198 flow [2024-06-28 01:37:22,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:22,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:22,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:22,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:37:22,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:22,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1657047827, now seen corresponding path program 1 times [2024-06-28 01:37:22,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:22,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770969130] [2024-06-28 01:37:22,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:22,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770969130] [2024-06-28 01:37:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770969130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:23,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:23,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:23,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378181517] [2024-06-28 01:37:23,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:23,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:23,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:23,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:23,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-28 01:37:23,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:23,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:23,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-28 01:37:23,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:23,921 INFO L124 PetriNetUnfolderBase]: 531/1016 cut-off events. [2024-06-28 01:37:23,922 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-06-28 01:37:23,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1016 events. 531/1016 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5404 event pairs, 130 based on Foata normal form. 4/977 useless extension candidates. Maximal degree in co-relation 2436. Up to 808 conditions per place. [2024-06-28 01:37:23,927 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-06-28 01:37:23,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 378 flow [2024-06-28 01:37:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-28 01:37:23,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2024-06-28 01:37:23,930 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 198 flow. Second operand 6 states and 125 transitions. [2024-06-28 01:37:23,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 378 flow [2024-06-28 01:37:23,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:23,934 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 219 flow [2024-06-28 01:37:23,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:37:23,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 01:37:23,938 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 219 flow [2024-06-28 01:37:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:23,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:23,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:37:23,940 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:23,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1762631065, now seen corresponding path program 1 times [2024-06-28 01:37:23,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:23,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469837397] [2024-06-28 01:37:23,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:23,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:24,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:24,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:24,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469837397] [2024-06-28 01:37:24,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469837397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:24,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:24,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:37:24,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291379533] [2024-06-28 01:37:24,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:24,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:37:24,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:24,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:37:24,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:37:24,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:37:24,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-06-28 01:37:24,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:24,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:37:24,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:24,682 INFO L124 PetriNetUnfolderBase]: 452/897 cut-off events. [2024-06-28 01:37:24,683 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-28 01:37:24,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 897 events. 452/897 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4702 event pairs, 186 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 2245. Up to 738 conditions per place. [2024-06-28 01:37:24,687 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-28 01:37:24,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 388 flow [2024-06-28 01:37:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:37:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:37:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 01:37:24,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:37:24,688 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 219 flow. Second operand 5 states and 91 transitions. [2024-06-28 01:37:24,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 388 flow [2024-06-28 01:37:24,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:24,692 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 248 flow [2024-06-28 01:37:24,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:37:24,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 01:37:24,695 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 248 flow [2024-06-28 01:37:24,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-06-28 01:37:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:24,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:37:24,695 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:24,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1193013464, now seen corresponding path program 1 times [2024-06-28 01:37:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:24,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963405197] [2024-06-28 01:37:24,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:24,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:25,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:25,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:25,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963405197] [2024-06-28 01:37:25,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963405197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:25,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:25,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:25,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249483476] [2024-06-28 01:37:25,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:25,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:25,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:25,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:25,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:25,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:25,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:25,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:25,458 INFO L124 PetriNetUnfolderBase]: 537/1034 cut-off events. [2024-06-28 01:37:25,459 INFO L125 PetriNetUnfolderBase]: For 1074/1074 co-relation queries the response was YES. [2024-06-28 01:37:25,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1034 events. 537/1034 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5390 event pairs, 223 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 2710. Up to 860 conditions per place. [2024-06-28 01:37:25,464 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-28 01:37:25,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 434 flow [2024-06-28 01:37:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:25,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-28 01:37:25,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:37:25,466 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 248 flow. Second operand 6 states and 104 transitions. [2024-06-28 01:37:25,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 434 flow [2024-06-28 01:37:25,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:25,468 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 274 flow [2024-06-28 01:37:25,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-28 01:37:25,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-28 01:37:25,469 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 274 flow [2024-06-28 01:37:25,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:25,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:25,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:37:25,470 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:25,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:25,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1989702136, now seen corresponding path program 1 times [2024-06-28 01:37:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:25,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744459644] [2024-06-28 01:37:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:25,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744459644] [2024-06-28 01:37:25,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744459644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:25,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:25,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:25,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827976692] [2024-06-28 01:37:25,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:25,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:25,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:25,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:25,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:25,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:26,193 INFO L124 PetriNetUnfolderBase]: 593/1135 cut-off events. [2024-06-28 01:37:26,193 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2024-06-28 01:37:26,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1135 events. 593/1135 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6043 event pairs, 241 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 3111. Up to 939 conditions per place. [2024-06-28 01:37:26,199 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 58 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-28 01:37:26,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 483 flow [2024-06-28 01:37:26,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:37:26,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:37:26,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 01:37:26,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:37:26,201 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 274 flow. Second operand 6 states and 105 transitions. [2024-06-28 01:37:26,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 483 flow [2024-06-28 01:37:26,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 464 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:26,204 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 321 flow [2024-06-28 01:37:26,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-28 01:37:26,204 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 01:37:26,204 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 321 flow [2024-06-28 01:37:26,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:26,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:26,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:37:26,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:26,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:26,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1449650506, now seen corresponding path program 2 times [2024-06-28 01:37:26,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:26,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122338799] [2024-06-28 01:37:26,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:26,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:26,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:26,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:26,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122338799] [2024-06-28 01:37:26,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122338799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:26,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:26,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:37:26,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733741018] [2024-06-28 01:37:26,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:26,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:37:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:26,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:37:26,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:37:26,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:26,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:26,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:26,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:26,953 INFO L124 PetriNetUnfolderBase]: 573/1091 cut-off events. [2024-06-28 01:37:26,953 INFO L125 PetriNetUnfolderBase]: For 2217/2217 co-relation queries the response was YES. [2024-06-28 01:37:26,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 1091 events. 573/1091 cut-off events. For 2217/2217 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5748 event pairs, 213 based on Foata normal form. 1/1053 useless extension candidates. Maximal degree in co-relation 3218. Up to 887 conditions per place. [2024-06-28 01:37:26,959 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 57 selfloop transitions, 15 changer transitions 0/80 dead transitions. [2024-06-28 01:37:26,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 557 flow [2024-06-28 01:37:26,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:26,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 117 transitions. [2024-06-28 01:37:26,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2024-06-28 01:37:26,962 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 321 flow. Second operand 7 states and 117 transitions. [2024-06-28 01:37:26,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 557 flow [2024-06-28 01:37:26,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 536 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:26,967 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 370 flow [2024-06-28 01:37:26,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=370, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2024-06-28 01:37:26,968 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 26 predicate places. [2024-06-28 01:37:26,968 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 370 flow [2024-06-28 01:37:26,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:26,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:26,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:37:26,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:26,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:26,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1671286618, now seen corresponding path program 1 times [2024-06-28 01:37:26,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:26,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219391765] [2024-06-28 01:37:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:26,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:27,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:27,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:27,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219391765] [2024-06-28 01:37:27,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219391765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:27,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:27,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:27,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747326980] [2024-06-28 01:37:27,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:27,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:27,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:27,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:27,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:27,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 370 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:27,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:27,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:27,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:27,755 INFO L124 PetriNetUnfolderBase]: 556/1066 cut-off events. [2024-06-28 01:37:27,756 INFO L125 PetriNetUnfolderBase]: For 2281/2281 co-relation queries the response was YES. [2024-06-28 01:37:27,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 1066 events. 556/1066 cut-off events. For 2281/2281 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5612 event pairs, 214 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 3272. Up to 877 conditions per place. [2024-06-28 01:37:27,762 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 70 selfloop transitions, 11 changer transitions 0/88 dead transitions. [2024-06-28 01:37:27,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 88 transitions, 619 flow [2024-06-28 01:37:27,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:27,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:37:27,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-28 01:37:27,763 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 370 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:37:27,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 88 transitions, 619 flow [2024-06-28 01:37:27,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 593 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:27,767 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 385 flow [2024-06-28 01:37:27,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-06-28 01:37:27,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 01:37:27,769 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 385 flow [2024-06-28 01:37:27,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:27,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:27,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:27,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:37:27,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:27,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash -448727940, now seen corresponding path program 1 times [2024-06-28 01:37:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:27,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944701309] [2024-06-28 01:37:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:27,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:28,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:28,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944701309] [2024-06-28 01:37:28,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944701309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:28,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:28,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:28,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862539858] [2024-06-28 01:37:28,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:28,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:28,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:28,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:28,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:28,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:28,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 385 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:28,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:28,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:28,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:28,595 INFO L124 PetriNetUnfolderBase]: 619/1181 cut-off events. [2024-06-28 01:37:28,595 INFO L125 PetriNetUnfolderBase]: For 3242/3245 co-relation queries the response was YES. [2024-06-28 01:37:28,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3746 conditions, 1181 events. 619/1181 cut-off events. For 3242/3245 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6328 event pairs, 189 based on Foata normal form. 5/1137 useless extension candidates. Maximal degree in co-relation 3714. Up to 937 conditions per place. [2024-06-28 01:37:28,602 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 65 selfloop transitions, 23 changer transitions 0/96 dead transitions. [2024-06-28 01:37:28,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 96 transitions, 668 flow [2024-06-28 01:37:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:28,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:28,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:37:28,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:37:28,604 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 385 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:37:28,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 96 transitions, 668 flow [2024-06-28 01:37:28,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 96 transitions, 643 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:28,609 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 465 flow [2024-06-28 01:37:28,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2024-06-28 01:37:28,609 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 33 predicate places. [2024-06-28 01:37:28,610 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 465 flow [2024-06-28 01:37:28,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:28,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:28,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:28,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:37:28,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:28,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:28,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1551225703, now seen corresponding path program 1 times [2024-06-28 01:37:28,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:28,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794463155] [2024-06-28 01:37:28,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:28,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:29,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:29,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794463155] [2024-06-28 01:37:29,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794463155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:29,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:29,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:29,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372314265] [2024-06-28 01:37:29,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:29,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:29,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:29,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:29,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:29,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:29,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:29,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:29,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:29,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:29,340 INFO L124 PetriNetUnfolderBase]: 676/1250 cut-off events. [2024-06-28 01:37:29,341 INFO L125 PetriNetUnfolderBase]: For 3942/3942 co-relation queries the response was YES. [2024-06-28 01:37:29,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 1250 events. 676/1250 cut-off events. For 3942/3942 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6500 event pairs, 204 based on Foata normal form. 1/1204 useless extension candidates. Maximal degree in co-relation 4276. Up to 1065 conditions per place. [2024-06-28 01:37:29,348 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 77 selfloop transitions, 13 changer transitions 0/96 dead transitions. [2024-06-28 01:37:29,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 96 transitions, 734 flow [2024-06-28 01:37:29,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:37:29,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-28 01:37:29,350 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 465 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:37:29,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 96 transitions, 734 flow [2024-06-28 01:37:29,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 696 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:29,358 INFO L231 Difference]: Finished difference. Result has 78 places, 73 transitions, 474 flow [2024-06-28 01:37:29,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=474, PETRI_PLACES=78, PETRI_TRANSITIONS=73} [2024-06-28 01:37:29,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-28 01:37:29,360 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 73 transitions, 474 flow [2024-06-28 01:37:29,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:29,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:29,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:29,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:37:29,360 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:29,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:29,361 INFO L85 PathProgramCache]: Analyzing trace with hash -448607040, now seen corresponding path program 2 times [2024-06-28 01:37:29,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:29,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885405658] [2024-06-28 01:37:29,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:29,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:29,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885405658] [2024-06-28 01:37:29,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885405658] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:29,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:29,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:29,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010585371] [2024-06-28 01:37:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:29,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:29,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 73 transitions, 474 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:29,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:29,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:29,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:30,235 INFO L124 PetriNetUnfolderBase]: 671/1236 cut-off events. [2024-06-28 01:37:30,236 INFO L125 PetriNetUnfolderBase]: For 4795/4798 co-relation queries the response was YES. [2024-06-28 01:37:30,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4450 conditions, 1236 events. 671/1236 cut-off events. For 4795/4798 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6443 event pairs, 177 based on Foata normal form. 5/1202 useless extension candidates. Maximal degree in co-relation 4415. Up to 966 conditions per place. [2024-06-28 01:37:30,243 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 27 changer transitions 0/107 dead transitions. [2024-06-28 01:37:30,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 846 flow [2024-06-28 01:37:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 01:37:30,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-28 01:37:30,244 INFO L175 Difference]: Start difference. First operand has 78 places, 73 transitions, 474 flow. Second operand 7 states and 128 transitions. [2024-06-28 01:37:30,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 846 flow [2024-06-28 01:37:30,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 107 transitions, 812 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:30,252 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 597 flow [2024-06-28 01:37:30,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=597, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2024-06-28 01:37:30,253 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-28 01:37:30,253 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 597 flow [2024-06-28 01:37:30,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:30,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:30,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:37:30,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:30,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash -270552960, now seen corresponding path program 3 times [2024-06-28 01:37:30,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:30,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358921827] [2024-06-28 01:37:30,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:30,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:30,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358921827] [2024-06-28 01:37:30,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358921827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:30,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:30,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:30,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809020803] [2024-06-28 01:37:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:30,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:30,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:30,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:30,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 597 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:30,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:30,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:30,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:30,999 INFO L124 PetriNetUnfolderBase]: 659/1258 cut-off events. [2024-06-28 01:37:30,999 INFO L125 PetriNetUnfolderBase]: For 6170/6172 co-relation queries the response was YES. [2024-06-28 01:37:31,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1258 events. 659/1258 cut-off events. For 6170/6172 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6796 event pairs, 169 based on Foata normal form. 4/1211 useless extension candidates. Maximal degree in co-relation 4695. Up to 912 conditions per place. [2024-06-28 01:37:31,006 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 73 selfloop transitions, 36 changer transitions 0/118 dead transitions. [2024-06-28 01:37:31,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 118 transitions, 1035 flow [2024-06-28 01:37:31,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:31,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:37:31,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 01:37:31,009 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 597 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:37:31,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 118 transitions, 1035 flow [2024-06-28 01:37:31,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 118 transitions, 977 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:31,016 INFO L231 Difference]: Finished difference. Result has 86 places, 95 transitions, 780 flow [2024-06-28 01:37:31,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=780, PETRI_PLACES=86, PETRI_TRANSITIONS=95} [2024-06-28 01:37:31,017 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-28 01:37:31,017 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 95 transitions, 780 flow [2024-06-28 01:37:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:31,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:31,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:37:31,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:31,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1989491095, now seen corresponding path program 2 times [2024-06-28 01:37:31,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236297433] [2024-06-28 01:37:31,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:31,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:31,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236297433] [2024-06-28 01:37:31,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236297433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:31,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:31,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:31,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248896628] [2024-06-28 01:37:31,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:31,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:31,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:31,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:31,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 95 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:31,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:31,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:31,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,850 INFO L124 PetriNetUnfolderBase]: 726/1334 cut-off events. [2024-06-28 01:37:31,850 INFO L125 PetriNetUnfolderBase]: For 7406/7406 co-relation queries the response was YES. [2024-06-28 01:37:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1334 events. 726/1334 cut-off events. For 7406/7406 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7011 event pairs, 180 based on Foata normal form. 1/1285 useless extension candidates. Maximal degree in co-relation 5405. Up to 1078 conditions per place. [2024-06-28 01:37:31,858 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 96 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2024-06-28 01:37:31,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 126 transitions, 1212 flow [2024-06-28 01:37:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:31,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:37:31,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-28 01:37:31,859 INFO L175 Difference]: Start difference. First operand has 86 places, 95 transitions, 780 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:37:31,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 126 transitions, 1212 flow [2024-06-28 01:37:31,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 126 transitions, 1148 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:31,869 INFO L231 Difference]: Finished difference. Result has 91 places, 99 transitions, 820 flow [2024-06-28 01:37:31,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=91, PETRI_TRANSITIONS=99} [2024-06-28 01:37:31,870 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 01:37:31,870 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 99 transitions, 820 flow [2024-06-28 01:37:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:31,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:31,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:31,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:37:31,871 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:31,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:31,871 INFO L85 PathProgramCache]: Analyzing trace with hash -270285833, now seen corresponding path program 3 times [2024-06-28 01:37:31,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:31,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431222424] [2024-06-28 01:37:31,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:31,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431222424] [2024-06-28 01:37:32,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431222424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:37:32,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659455603] [2024-06-28 01:37:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:32,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:37:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:37:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:37:32,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:32,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 99 transitions, 820 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:32,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:32,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:32,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:32,709 INFO L124 PetriNetUnfolderBase]: 724/1328 cut-off events. [2024-06-28 01:37:32,710 INFO L125 PetriNetUnfolderBase]: For 7992/7992 co-relation queries the response was YES. [2024-06-28 01:37:32,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5565 conditions, 1328 events. 724/1328 cut-off events. For 7992/7992 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6933 event pairs, 180 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 5523. Up to 1076 conditions per place. [2024-06-28 01:37:32,719 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 92 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2024-06-28 01:37:32,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 124 transitions, 1164 flow [2024-06-28 01:37:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:32,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 01:37:32,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-28 01:37:32,721 INFO L175 Difference]: Start difference. First operand has 91 places, 99 transitions, 820 flow. Second operand 7 states and 118 transitions. [2024-06-28 01:37:32,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 124 transitions, 1164 flow [2024-06-28 01:37:32,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 124 transitions, 1117 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:32,733 INFO L231 Difference]: Finished difference. Result has 95 places, 99 transitions, 830 flow [2024-06-28 01:37:32,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=830, PETRI_PLACES=95, PETRI_TRANSITIONS=99} [2024-06-28 01:37:32,734 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 54 predicate places. [2024-06-28 01:37:32,735 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 99 transitions, 830 flow [2024-06-28 01:37:32,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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) [2024-06-28 01:37:32,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:32,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:32,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:37:32,735 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:32,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:32,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1680765211, now seen corresponding path program 1 times [2024-06-28 01:37:32,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:32,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849721007] [2024-06-28 01:37:32,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:32,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:33,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:33,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:33,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849721007] [2024-06-28 01:37:33,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849721007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:33,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:33,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:33,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15588042] [2024-06-28 01:37:33,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:33,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:33,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:33,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:33,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:33,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:33,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 99 transitions, 830 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:37:33,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:33,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:33,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:33,987 INFO L124 PetriNetUnfolderBase]: 767/1428 cut-off events. [2024-06-28 01:37:33,987 INFO L125 PetriNetUnfolderBase]: For 8976/8983 co-relation queries the response was YES. [2024-06-28 01:37:33,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6123 conditions, 1428 events. 767/1428 cut-off events. For 8976/8983 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7680 event pairs, 186 based on Foata normal form. 4/1379 useless extension candidates. Maximal degree in co-relation 6079. Up to 1099 conditions per place. [2024-06-28 01:37:33,994 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 106 selfloop transitions, 38 changer transitions 0/155 dead transitions. [2024-06-28 01:37:33,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 155 transitions, 1473 flow [2024-06-28 01:37:33,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:33,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:33,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:37:33,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:37:33,996 INFO L175 Difference]: Start difference. First operand has 95 places, 99 transitions, 830 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:37:33,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 155 transitions, 1473 flow [2024-06-28 01:37:34,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 155 transitions, 1405 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:34,009 INFO L231 Difference]: Finished difference. Result has 99 places, 122 transitions, 1128 flow [2024-06-28 01:37:34,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1128, PETRI_PLACES=99, PETRI_TRANSITIONS=122} [2024-06-28 01:37:34,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 58 predicate places. [2024-06-28 01:37:34,010 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 122 transitions, 1128 flow [2024-06-28 01:37:34,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:37:34,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:34,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:34,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:37:34,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:34,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1025753947, now seen corresponding path program 2 times [2024-06-28 01:37:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957979750] [2024-06-28 01:37:34,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:34,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:34,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:34,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957979750] [2024-06-28 01:37:34,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957979750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:34,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:34,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:34,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587982714] [2024-06-28 01:37:34,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:34,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:34,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:34,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:34,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:34,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:34,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 122 transitions, 1128 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:37:34,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:34,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:34,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:35,219 INFO L124 PetriNetUnfolderBase]: 763/1414 cut-off events. [2024-06-28 01:37:35,219 INFO L125 PetriNetUnfolderBase]: For 9601/9604 co-relation queries the response was YES. [2024-06-28 01:37:35,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6294 conditions, 1414 events. 763/1414 cut-off events. For 9601/9604 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7554 event pairs, 189 based on Foata normal form. 4/1370 useless extension candidates. Maximal degree in co-relation 6247. Up to 1053 conditions per place. [2024-06-28 01:37:35,227 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 92 selfloop transitions, 44 changer transitions 0/147 dead transitions. [2024-06-28 01:37:35,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 147 transitions, 1512 flow [2024-06-28 01:37:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:37:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:37:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 01:37:35,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 01:37:35,229 INFO L175 Difference]: Start difference. First operand has 99 places, 122 transitions, 1128 flow. Second operand 7 states and 127 transitions. [2024-06-28 01:37:35,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 147 transitions, 1512 flow [2024-06-28 01:37:35,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 147 transitions, 1438 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-06-28 01:37:35,245 INFO L231 Difference]: Finished difference. Result has 103 places, 124 transitions, 1198 flow [2024-06-28 01:37:35,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1198, PETRI_PLACES=103, PETRI_TRANSITIONS=124} [2024-06-28 01:37:35,246 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-28 01:37:35,246 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 124 transitions, 1198 flow [2024-06-28 01:37:35,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 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) [2024-06-28 01:37:35,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:35,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:35,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:37:35,246 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:35,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:35,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1025662621, now seen corresponding path program 1 times [2024-06-28 01:37:35,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:35,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648295896] [2024-06-28 01:37:35,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:35,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:35,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:35,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648295896] [2024-06-28 01:37:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648295896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:35,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:35,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599774886] [2024-06-28 01:37:35,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:35,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:35,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:35,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:35,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 124 transitions, 1198 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:35,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:35,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:35,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:36,145 INFO L124 PetriNetUnfolderBase]: 831/1513 cut-off events. [2024-06-28 01:37:36,145 INFO L125 PetriNetUnfolderBase]: For 10942/10942 co-relation queries the response was YES. [2024-06-28 01:37:36,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 1513 events. 831/1513 cut-off events. For 10942/10942 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7989 event pairs, 202 based on Foata normal form. 2/1461 useless extension candidates. Maximal degree in co-relation 6746. Up to 1173 conditions per place. [2024-06-28 01:37:36,154 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-28 01:37:36,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 156 transitions, 1634 flow [2024-06-28 01:37:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:36,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:36,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:37:36,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:37:36,156 INFO L175 Difference]: Start difference. First operand has 103 places, 124 transitions, 1198 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:37:36,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 156 transitions, 1634 flow [2024-06-28 01:37:36,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 156 transitions, 1554 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:36,173 INFO L231 Difference]: Finished difference. Result has 106 places, 127 transitions, 1245 flow [2024-06-28 01:37:36,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1245, PETRI_PLACES=106, PETRI_TRANSITIONS=127} [2024-06-28 01:37:36,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-28 01:37:36,174 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 127 transitions, 1245 flow [2024-06-28 01:37:36,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:36,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:36,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:36,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:37:36,174 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:36,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:36,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1021907963, now seen corresponding path program 1 times [2024-06-28 01:37:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:36,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126963488] [2024-06-28 01:37:36,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:36,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:36,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:36,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:36,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126963488] [2024-06-28 01:37:36,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126963488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:36,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:36,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:36,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701397802] [2024-06-28 01:37:36,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:36,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:36,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:36,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:36,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:36,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:36,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 127 transitions, 1245 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:36,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:36,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:36,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:37,063 INFO L124 PetriNetUnfolderBase]: 844/1527 cut-off events. [2024-06-28 01:37:37,064 INFO L125 PetriNetUnfolderBase]: For 11519/11519 co-relation queries the response was YES. [2024-06-28 01:37:37,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7073 conditions, 1527 events. 844/1527 cut-off events. For 11519/11519 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8010 event pairs, 208 based on Foata normal form. 1/1476 useless extension candidates. Maximal degree in co-relation 7024. Up to 1300 conditions per place. [2024-06-28 01:37:37,073 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 133 selfloop transitions, 19 changer transitions 0/158 dead transitions. [2024-06-28 01:37:37,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 158 transitions, 1691 flow [2024-06-28 01:37:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:37:37,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:37:37,075 INFO L175 Difference]: Start difference. First operand has 106 places, 127 transitions, 1245 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:37:37,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 158 transitions, 1691 flow [2024-06-28 01:37:37,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 158 transitions, 1588 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:37,092 INFO L231 Difference]: Finished difference. Result has 108 places, 129 transitions, 1207 flow [2024-06-28 01:37:37,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1207, PETRI_PLACES=108, PETRI_TRANSITIONS=129} [2024-06-28 01:37:37,093 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 67 predicate places. [2024-06-28 01:37:37,093 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 129 transitions, 1207 flow [2024-06-28 01:37:37,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:37,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:37,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:37,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:37:37,093 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:37,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1021908211, now seen corresponding path program 2 times [2024-06-28 01:37:37,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:37,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321243883] [2024-06-28 01:37:37,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:37,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:37,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:37,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321243883] [2024-06-28 01:37:37,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321243883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:37,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:37,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:37,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375604250] [2024-06-28 01:37:37,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:37,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:37,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:37,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:37,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 129 transitions, 1207 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:37,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:37,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:37,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:37,986 INFO L124 PetriNetUnfolderBase]: 890/1602 cut-off events. [2024-06-28 01:37:37,986 INFO L125 PetriNetUnfolderBase]: For 12869/12869 co-relation queries the response was YES. [2024-06-28 01:37:37,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 1602 events. 890/1602 cut-off events. For 12869/12869 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8442 event pairs, 200 based on Foata normal form. 2/1549 useless extension candidates. Maximal degree in co-relation 7419. Up to 1134 conditions per place. [2024-06-28 01:37:37,994 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 57 changer transitions 0/166 dead transitions. [2024-06-28 01:37:37,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 166 transitions, 1766 flow [2024-06-28 01:37:37,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:37,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:37,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:37:37,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-28 01:37:37,996 INFO L175 Difference]: Start difference. First operand has 108 places, 129 transitions, 1207 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:37:37,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 166 transitions, 1766 flow [2024-06-28 01:37:38,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 166 transitions, 1714 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:38,014 INFO L231 Difference]: Finished difference. Result has 111 places, 138 transitions, 1405 flow [2024-06-28 01:37:38,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1405, PETRI_PLACES=111, PETRI_TRANSITIONS=138} [2024-06-28 01:37:38,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-28 01:37:38,015 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 138 transitions, 1405 flow [2024-06-28 01:37:38,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:38,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:38,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:37:38,015 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:38,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1021914721, now seen corresponding path program 3 times [2024-06-28 01:37:38,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:38,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248440167] [2024-06-28 01:37:38,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:38,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:38,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:38,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:38,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248440167] [2024-06-28 01:37:38,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248440167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:38,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:38,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415934496] [2024-06-28 01:37:38,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:38,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:38,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:38,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:38,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:38,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 138 transitions, 1405 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:38,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:38,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:38,938 INFO L124 PetriNetUnfolderBase]: 900/1608 cut-off events. [2024-06-28 01:37:38,938 INFO L125 PetriNetUnfolderBase]: For 14976/14976 co-relation queries the response was YES. [2024-06-28 01:37:38,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7964 conditions, 1608 events. 900/1608 cut-off events. For 14976/14976 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8461 event pairs, 207 based on Foata normal form. 2/1558 useless extension candidates. Maximal degree in co-relation 7912. Up to 1146 conditions per place. [2024-06-28 01:37:38,945 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 107 selfloop transitions, 56 changer transitions 0/169 dead transitions. [2024-06-28 01:37:38,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 169 transitions, 1914 flow [2024-06-28 01:37:38,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:38,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:37:38,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:37:38,947 INFO L175 Difference]: Start difference. First operand has 111 places, 138 transitions, 1405 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:37:38,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 169 transitions, 1914 flow [2024-06-28 01:37:38,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 169 transitions, 1812 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:38,968 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 1464 flow [2024-06-28 01:37:38,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2024-06-28 01:37:38,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-06-28 01:37:38,969 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 1464 flow [2024-06-28 01:37:38,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:38,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:38,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:38,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:37:38,970 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:38,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash 211372101, now seen corresponding path program 2 times [2024-06-28 01:37:38,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:38,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035055597] [2024-06-28 01:37:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:39,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:39,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035055597] [2024-06-28 01:37:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035055597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:39,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238105960] [2024-06-28 01:37:39,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:39,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:39,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:39,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:39,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 1464 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:39,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:39,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:39,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:39,880 INFO L124 PetriNetUnfolderBase]: 918/1622 cut-off events. [2024-06-28 01:37:39,880 INFO L125 PetriNetUnfolderBase]: For 15933/15933 co-relation queries the response was YES. [2024-06-28 01:37:39,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8245 conditions, 1622 events. 918/1622 cut-off events. For 15933/15933 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8472 event pairs, 192 based on Foata normal form. 1/1575 useless extension candidates. Maximal degree in co-relation 8191. Up to 1303 conditions per place. [2024-06-28 01:37:39,890 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 138 selfloop transitions, 36 changer transitions 0/180 dead transitions. [2024-06-28 01:37:39,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 180 transitions, 2082 flow [2024-06-28 01:37:39,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:39,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:37:39,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:37:39,891 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 1464 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:37:39,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 180 transitions, 2082 flow [2024-06-28 01:37:39,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 180 transitions, 1980 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:39,920 INFO L231 Difference]: Finished difference. Result has 119 places, 146 transitions, 1509 flow [2024-06-28 01:37:39,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1364, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1509, PETRI_PLACES=119, PETRI_TRANSITIONS=146} [2024-06-28 01:37:39,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-28 01:37:39,921 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 146 transitions, 1509 flow [2024-06-28 01:37:39,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:39,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:39,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:39,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:37:39,922 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:39,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1536405929, now seen corresponding path program 3 times [2024-06-28 01:37:39,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:39,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154869740] [2024-06-28 01:37:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:39,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154869740] [2024-06-28 01:37:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154869740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19254812] [2024-06-28 01:37:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:40,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:40,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:40,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 146 transitions, 1509 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:40,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:40,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:40,798 INFO L124 PetriNetUnfolderBase]: 931/1636 cut-off events. [2024-06-28 01:37:40,799 INFO L125 PetriNetUnfolderBase]: For 16993/16993 co-relation queries the response was YES. [2024-06-28 01:37:40,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8503 conditions, 1636 events. 931/1636 cut-off events. For 16993/16993 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8513 event pairs, 196 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 8447. Up to 1317 conditions per place. [2024-06-28 01:37:40,809 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 141 selfloop transitions, 35 changer transitions 0/182 dead transitions. [2024-06-28 01:37:40,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 182 transitions, 2109 flow [2024-06-28 01:37:40,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:40,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:40,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:37:40,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:37:40,811 INFO L175 Difference]: Start difference. First operand has 119 places, 146 transitions, 1509 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:37:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 182 transitions, 2109 flow [2024-06-28 01:37:40,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 182 transitions, 2034 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:40,843 INFO L231 Difference]: Finished difference. Result has 123 places, 148 transitions, 1539 flow [2024-06-28 01:37:40,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1539, PETRI_PLACES=123, PETRI_TRANSITIONS=148} [2024-06-28 01:37:40,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 01:37:40,843 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 148 transitions, 1539 flow [2024-06-28 01:37:40,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:40,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:40,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:40,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:37:40,844 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:40,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:40,844 INFO L85 PathProgramCache]: Analyzing trace with hash 202794463, now seen corresponding path program 4 times [2024-06-28 01:37:40,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:40,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242006358] [2024-06-28 01:37:40,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:40,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:41,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:41,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242006358] [2024-06-28 01:37:41,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242006358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:41,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:41,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:41,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477133990] [2024-06-28 01:37:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:41,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:41,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 148 transitions, 1539 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:41,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:41,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:41,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:41,731 INFO L124 PetriNetUnfolderBase]: 951/1702 cut-off events. [2024-06-28 01:37:41,732 INFO L125 PetriNetUnfolderBase]: For 17823/17823 co-relation queries the response was YES. [2024-06-28 01:37:41,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8761 conditions, 1702 events. 951/1702 cut-off events. For 17823/17823 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9145 event pairs, 194 based on Foata normal form. 2/1643 useless extension candidates. Maximal degree in co-relation 8703. Up to 1106 conditions per place. [2024-06-28 01:37:41,743 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 112 selfloop transitions, 76 changer transitions 0/194 dead transitions. [2024-06-28 01:37:41,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 194 transitions, 2325 flow [2024-06-28 01:37:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:41,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 01:37:41,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-28 01:37:41,749 INFO L175 Difference]: Start difference. First operand has 123 places, 148 transitions, 1539 flow. Second operand 8 states and 141 transitions. [2024-06-28 01:37:41,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 194 transitions, 2325 flow [2024-06-28 01:37:41,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 194 transitions, 2256 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:41,781 INFO L231 Difference]: Finished difference. Result has 128 places, 166 transitions, 1924 flow [2024-06-28 01:37:41,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1475, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1924, PETRI_PLACES=128, PETRI_TRANSITIONS=166} [2024-06-28 01:37:41,782 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 87 predicate places. [2024-06-28 01:37:41,782 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 166 transitions, 1924 flow [2024-06-28 01:37:41,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:41,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:41,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:41,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:37:41,783 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:41,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash 202800973, now seen corresponding path program 5 times [2024-06-28 01:37:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:41,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747260983] [2024-06-28 01:37:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:41,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:42,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:42,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:42,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747260983] [2024-06-28 01:37:42,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747260983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:42,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:42,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618446469] [2024-06-28 01:37:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:42,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:42,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:42,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 166 transitions, 1924 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:42,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:42,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:42,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:42,688 INFO L124 PetriNetUnfolderBase]: 973/1732 cut-off events. [2024-06-28 01:37:42,688 INFO L125 PetriNetUnfolderBase]: For 21103/21103 co-relation queries the response was YES. [2024-06-28 01:37:42,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9504 conditions, 1732 events. 973/1732 cut-off events. For 21103/21103 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9258 event pairs, 195 based on Foata normal form. 2/1674 useless extension candidates. Maximal degree in co-relation 9443. Up to 1125 conditions per place. [2024-06-28 01:37:42,698 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 80 changer transitions 0/201 dead transitions. [2024-06-28 01:37:42,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 201 transitions, 2619 flow [2024-06-28 01:37:42,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:42,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:37:42,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:37:42,702 INFO L175 Difference]: Start difference. First operand has 128 places, 166 transitions, 1924 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:37:42,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 201 transitions, 2619 flow [2024-06-28 01:37:42,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 201 transitions, 2469 flow, removed 62 selfloop flow, removed 2 redundant places. [2024-06-28 01:37:42,739 INFO L231 Difference]: Finished difference. Result has 135 places, 172 transitions, 2057 flow [2024-06-28 01:37:42,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2057, PETRI_PLACES=135, PETRI_TRANSITIONS=172} [2024-06-28 01:37:42,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-28 01:37:42,741 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 172 transitions, 2057 flow [2024-06-28 01:37:42,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:42,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:42,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:42,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:37:42,741 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:42,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 211075183, now seen corresponding path program 6 times [2024-06-28 01:37:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432444966] [2024-06-28 01:37:42,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:43,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:43,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432444966] [2024-06-28 01:37:43,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432444966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:43,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:43,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:43,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230230489] [2024-06-28 01:37:43,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:43,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:43,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:43,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:43,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 172 transitions, 2057 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:43,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:43,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:43,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:43,725 INFO L124 PetriNetUnfolderBase]: 969/1729 cut-off events. [2024-06-28 01:37:43,725 INFO L125 PetriNetUnfolderBase]: For 20781/20781 co-relation queries the response was YES. [2024-06-28 01:37:43,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9513 conditions, 1729 events. 969/1729 cut-off events. For 20781/20781 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9268 event pairs, 174 based on Foata normal form. 2/1671 useless extension candidates. Maximal degree in co-relation 9449. Up to 1122 conditions per place. [2024-06-28 01:37:43,735 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 105 selfloop transitions, 91 changer transitions 0/202 dead transitions. [2024-06-28 01:37:43,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 202 transitions, 2638 flow [2024-06-28 01:37:43,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:43,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:43,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:37:43,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-28 01:37:43,736 INFO L175 Difference]: Start difference. First operand has 135 places, 172 transitions, 2057 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:37:43,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 202 transitions, 2638 flow [2024-06-28 01:37:43,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 202 transitions, 2462 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:43,776 INFO L231 Difference]: Finished difference. Result has 140 places, 173 transitions, 2085 flow [2024-06-28 01:37:43,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2085, PETRI_PLACES=140, PETRI_TRANSITIONS=173} [2024-06-28 01:37:43,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-28 01:37:43,777 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 173 transitions, 2085 flow [2024-06-28 01:37:43,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:43,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:43,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:43,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:37:43,778 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:43,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:43,778 INFO L85 PathProgramCache]: Analyzing trace with hash 988142459, now seen corresponding path program 4 times [2024-06-28 01:37:43,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:43,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216839524] [2024-06-28 01:37:43,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:43,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216839524] [2024-06-28 01:37:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216839524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:44,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:37:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329811742] [2024-06-28 01:37:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:37:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:44,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:37:44,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:37:44,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:44,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 173 transitions, 2085 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:44,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:44,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:44,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:44,732 INFO L124 PetriNetUnfolderBase]: 967/1708 cut-off events. [2024-06-28 01:37:44,732 INFO L125 PetriNetUnfolderBase]: For 20819/20819 co-relation queries the response was YES. [2024-06-28 01:37:44,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9478 conditions, 1708 events. 967/1708 cut-off events. For 20819/20819 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9018 event pairs, 197 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 9413. Up to 1372 conditions per place. [2024-06-28 01:37:44,742 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 166 selfloop transitions, 38 changer transitions 0/210 dead transitions. [2024-06-28 01:37:44,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 210 transitions, 2734 flow [2024-06-28 01:37:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:44,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:44,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:37:44,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:37:44,743 INFO L175 Difference]: Start difference. First operand has 140 places, 173 transitions, 2085 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:37:44,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 210 transitions, 2734 flow [2024-06-28 01:37:44,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 210 transitions, 2547 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:44,788 INFO L231 Difference]: Finished difference. Result has 142 places, 174 transitions, 2007 flow [2024-06-28 01:37:44,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2007, PETRI_PLACES=142, PETRI_TRANSITIONS=174} [2024-06-28 01:37:44,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-28 01:37:44,788 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 174 transitions, 2007 flow [2024-06-28 01:37:44,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:44,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:44,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:44,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:37:44,789 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:44,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash 211383013, now seen corresponding path program 1 times [2024-06-28 01:37:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45372706] [2024-06-28 01:37:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:45,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45372706] [2024-06-28 01:37:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45372706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431521525] [2024-06-28 01:37:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:45,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:45,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:45,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 174 transitions, 2007 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:45,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:45,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:45,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:46,004 INFO L124 PetriNetUnfolderBase]: 965/1722 cut-off events. [2024-06-28 01:37:46,004 INFO L125 PetriNetUnfolderBase]: For 20942/20942 co-relation queries the response was YES. [2024-06-28 01:37:46,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1722 events. 965/1722 cut-off events. For 20942/20942 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 9195 event pairs, 216 based on Foata normal form. 1/1666 useless extension candidates. Maximal degree in co-relation 9217. Up to 1490 conditions per place. [2024-06-28 01:37:46,012 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 176 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-28 01:37:46,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 212 transitions, 2640 flow [2024-06-28 01:37:46,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:37:46,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:37:46,014 INFO L175 Difference]: Start difference. First operand has 142 places, 174 transitions, 2007 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:37:46,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 212 transitions, 2640 flow [2024-06-28 01:37:46,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 212 transitions, 2577 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:46,050 INFO L231 Difference]: Finished difference. Result has 148 places, 187 transitions, 2170 flow [2024-06-28 01:37:46,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1946, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2170, PETRI_PLACES=148, PETRI_TRANSITIONS=187} [2024-06-28 01:37:46,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-28 01:37:46,051 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 187 transitions, 2170 flow [2024-06-28 01:37:46,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:46,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:46,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:46,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:37:46,052 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:46,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:46,052 INFO L85 PathProgramCache]: Analyzing trace with hash 255014985, now seen corresponding path program 1 times [2024-06-28 01:37:46,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:46,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730045843] [2024-06-28 01:37:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:46,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:46,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:46,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:46,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730045843] [2024-06-28 01:37:46,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730045843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:46,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:46,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:46,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062341361] [2024-06-28 01:37:46,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:46,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:46,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:46,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:46,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:46,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 187 transitions, 2170 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:46,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:46,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:46,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:47,394 INFO L124 PetriNetUnfolderBase]: 911/1654 cut-off events. [2024-06-28 01:37:47,395 INFO L125 PetriNetUnfolderBase]: For 22818/22833 co-relation queries the response was YES. [2024-06-28 01:37:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9201 conditions, 1654 events. 911/1654 cut-off events. For 22818/22833 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9078 event pairs, 141 based on Foata normal form. 14/1613 useless extension candidates. Maximal degree in co-relation 9132. Up to 1255 conditions per place. [2024-06-28 01:37:47,405 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 156 selfloop transitions, 38 changer transitions 0/219 dead transitions. [2024-06-28 01:37:47,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 219 transitions, 2692 flow [2024-06-28 01:37:47,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:37:47,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:37:47,408 INFO L175 Difference]: Start difference. First operand has 148 places, 187 transitions, 2170 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:37:47,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 219 transitions, 2692 flow [2024-06-28 01:37:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 219 transitions, 2423 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:47,447 INFO L231 Difference]: Finished difference. Result has 151 places, 192 transitions, 2045 flow [2024-06-28 01:37:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2045, PETRI_PLACES=151, PETRI_TRANSITIONS=192} [2024-06-28 01:37:47,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 110 predicate places. [2024-06-28 01:37:47,448 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 192 transitions, 2045 flow [2024-06-28 01:37:47,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:47,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:47,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:47,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:37:47,448 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:47,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:47,449 INFO L85 PathProgramCache]: Analyzing trace with hash 255076520, now seen corresponding path program 1 times [2024-06-28 01:37:47,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295321930] [2024-06-28 01:37:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:47,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:48,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:48,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:48,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295321930] [2024-06-28 01:37:48,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295321930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:48,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:48,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:48,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058834808] [2024-06-28 01:37:48,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:48,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:48,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:48,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:48,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:48,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:48,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 192 transitions, 2045 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:48,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:48,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:48,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:48,762 INFO L124 PetriNetUnfolderBase]: 981/1749 cut-off events. [2024-06-28 01:37:48,762 INFO L125 PetriNetUnfolderBase]: For 22795/22795 co-relation queries the response was YES. [2024-06-28 01:37:48,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 1749 events. 981/1749 cut-off events. For 22795/22795 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9356 event pairs, 203 based on Foata normal form. 1/1694 useless extension candidates. Maximal degree in co-relation 9406. Up to 1358 conditions per place. [2024-06-28 01:37:48,772 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 165 selfloop transitions, 51 changer transitions 0/222 dead transitions. [2024-06-28 01:37:48,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 222 transitions, 2611 flow [2024-06-28 01:37:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:48,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:48,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:37:48,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:37:48,773 INFO L175 Difference]: Start difference. First operand has 151 places, 192 transitions, 2045 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:37:48,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 222 transitions, 2611 flow [2024-06-28 01:37:48,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 222 transitions, 2487 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:48,814 INFO L231 Difference]: Finished difference. Result has 154 places, 194 transitions, 2067 flow [2024-06-28 01:37:48,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2067, PETRI_PLACES=154, PETRI_TRANSITIONS=194} [2024-06-28 01:37:48,814 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 01:37:48,815 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 194 transitions, 2067 flow [2024-06-28 01:37:48,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:48,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:48,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:48,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:37:48,815 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:48,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:48,816 INFO L85 PathProgramCache]: Analyzing trace with hash 823639015, now seen corresponding path program 2 times [2024-06-28 01:37:48,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:48,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430750431] [2024-06-28 01:37:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:48,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:48,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:49,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430750431] [2024-06-28 01:37:49,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430750431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:49,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:49,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967459610] [2024-06-28 01:37:49,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:49,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:49,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:49,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:49,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:49,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 194 transitions, 2067 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:49,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:49,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:49,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:50,145 INFO L124 PetriNetUnfolderBase]: 922/1695 cut-off events. [2024-06-28 01:37:50,145 INFO L125 PetriNetUnfolderBase]: For 24760/24774 co-relation queries the response was YES. [2024-06-28 01:37:50,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9250 conditions, 1695 events. 922/1695 cut-off events. For 24760/24774 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9376 event pairs, 188 based on Foata normal form. 15/1652 useless extension candidates. Maximal degree in co-relation 9178. Up to 1236 conditions per place. [2024-06-28 01:37:50,156 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 151 selfloop transitions, 47 changer transitions 0/224 dead transitions. [2024-06-28 01:37:50,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 224 transitions, 2601 flow [2024-06-28 01:37:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:37:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:37:50,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:37:50,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:37:50,157 INFO L175 Difference]: Start difference. First operand has 154 places, 194 transitions, 2067 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:37:50,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 224 transitions, 2601 flow [2024-06-28 01:37:50,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 224 transitions, 2505 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:50,201 INFO L231 Difference]: Finished difference. Result has 156 places, 196 transitions, 2111 flow [2024-06-28 01:37:50,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2111, PETRI_PLACES=156, PETRI_TRANSITIONS=196} [2024-06-28 01:37:50,202 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-28 01:37:50,202 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 196 transitions, 2111 flow [2024-06-28 01:37:50,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:50,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:50,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:50,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:37:50,202 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:50,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:50,203 INFO L85 PathProgramCache]: Analyzing trace with hash 257907657, now seen corresponding path program 1 times [2024-06-28 01:37:50,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:50,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063241717] [2024-06-28 01:37:50,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:50,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063241717] [2024-06-28 01:37:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063241717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:50,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:50,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:50,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648417013] [2024-06-28 01:37:50,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:50,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:50,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:50,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:50,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:50,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 196 transitions, 2111 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:50,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:50,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:50,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:51,264 INFO L124 PetriNetUnfolderBase]: 1016/1804 cut-off events. [2024-06-28 01:37:51,264 INFO L125 PetriNetUnfolderBase]: For 26426/26426 co-relation queries the response was YES. [2024-06-28 01:37:51,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9924 conditions, 1804 events. 1016/1804 cut-off events. For 26426/26426 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9705 event pairs, 201 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 9851. Up to 1435 conditions per place. [2024-06-28 01:37:51,275 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 180 selfloop transitions, 47 changer transitions 0/233 dead transitions. [2024-06-28 01:37:51,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 233 transitions, 2745 flow [2024-06-28 01:37:51,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:51,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:37:51,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:37:51,276 INFO L175 Difference]: Start difference. First operand has 156 places, 196 transitions, 2111 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:37:51,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 233 transitions, 2745 flow [2024-06-28 01:37:51,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 233 transitions, 2627 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:51,320 INFO L231 Difference]: Finished difference. Result has 159 places, 199 transitions, 2141 flow [2024-06-28 01:37:51,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1993, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2141, PETRI_PLACES=159, PETRI_TRANSITIONS=199} [2024-06-28 01:37:51,321 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-28 01:37:51,321 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 199 transitions, 2141 flow [2024-06-28 01:37:51,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:51,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:51,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:37:51,322 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:51,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:51,322 INFO L85 PathProgramCache]: Analyzing trace with hash 884548863, now seen corresponding path program 2 times [2024-06-28 01:37:51,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:51,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950210570] [2024-06-28 01:37:51,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:51,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:51,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:51,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:51,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950210570] [2024-06-28 01:37:51,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950210570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:51,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:51,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:51,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659732417] [2024-06-28 01:37:51,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:51,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:51,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:51,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:51,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:51,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:51,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 199 transitions, 2141 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:51,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:51,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:51,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:52,297 INFO L124 PetriNetUnfolderBase]: 1086/1909 cut-off events. [2024-06-28 01:37:52,297 INFO L125 PetriNetUnfolderBase]: For 30268/30268 co-relation queries the response was YES. [2024-06-28 01:37:52,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 1909 events. 1086/1909 cut-off events. For 30268/30268 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10302 event pairs, 192 based on Foata normal form. 2/1854 useless extension candidates. Maximal degree in co-relation 10689. Up to 1323 conditions per place. [2024-06-28 01:37:52,309 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 166 selfloop transitions, 73 changer transitions 0/245 dead transitions. [2024-06-28 01:37:52,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 245 transitions, 3063 flow [2024-06-28 01:37:52,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:52,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:52,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:37:52,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:37:52,311 INFO L175 Difference]: Start difference. First operand has 159 places, 199 transitions, 2141 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:37:52,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 245 transitions, 3063 flow [2024-06-28 01:37:52,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 245 transitions, 2937 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:37:52,362 INFO L231 Difference]: Finished difference. Result has 162 places, 211 transitions, 2390 flow [2024-06-28 01:37:52,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2390, PETRI_PLACES=162, PETRI_TRANSITIONS=211} [2024-06-28 01:37:52,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 121 predicate places. [2024-06-28 01:37:52,363 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 211 transitions, 2390 flow [2024-06-28 01:37:52,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:52,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:52,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:52,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:37:52,363 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:52,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:52,364 INFO L85 PathProgramCache]: Analyzing trace with hash 884556582, now seen corresponding path program 1 times [2024-06-28 01:37:52,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:52,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999794193] [2024-06-28 01:37:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:52,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:52,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999794193] [2024-06-28 01:37:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999794193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:52,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:52,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:52,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529546682] [2024-06-28 01:37:52,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:52,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:52,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:52,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 211 transitions, 2390 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:52,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:52,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:52,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:53,421 INFO L124 PetriNetUnfolderBase]: 1142/2009 cut-off events. [2024-06-28 01:37:53,422 INFO L125 PetriNetUnfolderBase]: For 34256/34256 co-relation queries the response was YES. [2024-06-28 01:37:53,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11725 conditions, 2009 events. 1142/2009 cut-off events. For 34256/34256 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10934 event pairs, 340 based on Foata normal form. 1/1950 useless extension candidates. Maximal degree in co-relation 11649. Up to 1744 conditions per place. [2024-06-28 01:37:53,434 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 226 selfloop transitions, 30 changer transitions 0/262 dead transitions. [2024-06-28 01:37:53,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 262 transitions, 3334 flow [2024-06-28 01:37:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:37:53,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 01:37:53,436 INFO L175 Difference]: Start difference. First operand has 162 places, 211 transitions, 2390 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:37:53,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 262 transitions, 3334 flow [2024-06-28 01:37:53,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 262 transitions, 3193 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:53,494 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 2623 flow [2024-06-28 01:37:53,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2623, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2024-06-28 01:37:53,495 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 01:37:53,495 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 2623 flow [2024-06-28 01:37:53,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:53,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:53,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:53,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:37:53,495 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:53,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:53,496 INFO L85 PathProgramCache]: Analyzing trace with hash -444886792, now seen corresponding path program 2 times [2024-06-28 01:37:53,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:53,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006491450] [2024-06-28 01:37:53,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:53,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:53,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:53,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:53,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006491450] [2024-06-28 01:37:53,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006491450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:53,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:53,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:53,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273130090] [2024-06-28 01:37:53,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:53,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:53,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:54,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:54,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 2623 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:54,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:54,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:54,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:54,479 INFO L124 PetriNetUnfolderBase]: 1191/2100 cut-off events. [2024-06-28 01:37:54,479 INFO L125 PetriNetUnfolderBase]: For 36146/36146 co-relation queries the response was YES. [2024-06-28 01:37:54,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 2100 events. 1191/2100 cut-off events. For 36146/36146 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11616 event pairs, 348 based on Foata normal form. 1/2037 useless extension candidates. Maximal degree in co-relation 12420. Up to 1789 conditions per place. [2024-06-28 01:37:54,493 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 232 selfloop transitions, 46 changer transitions 0/284 dead transitions. [2024-06-28 01:37:54,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 284 transitions, 3641 flow [2024-06-28 01:37:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:37:54,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:37:54,494 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 2623 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:37:54,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 284 transitions, 3641 flow [2024-06-28 01:37:54,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 284 transitions, 3539 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 01:37:54,563 INFO L231 Difference]: Finished difference. Result has 182 places, 247 transitions, 2973 flow [2024-06-28 01:37:54,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2973, PETRI_PLACES=182, PETRI_TRANSITIONS=247} [2024-06-28 01:37:54,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-28 01:37:54,564 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 247 transitions, 2973 flow [2024-06-28 01:37:54,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:54,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:54,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:37:54,564 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:54,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 486406405, now seen corresponding path program 3 times [2024-06-28 01:37:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603953299] [2024-06-28 01:37:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:54,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:55,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:55,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603953299] [2024-06-28 01:37:55,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603953299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:55,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:55,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:55,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658354378] [2024-06-28 01:37:55,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:55,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:55,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:55,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:55,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:55,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:55,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 247 transitions, 2973 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:55,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:55,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:55,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:55,595 INFO L124 PetriNetUnfolderBase]: 1405/2420 cut-off events. [2024-06-28 01:37:55,595 INFO L125 PetriNetUnfolderBase]: For 40645/40645 co-relation queries the response was YES. [2024-06-28 01:37:55,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14662 conditions, 2420 events. 1405/2420 cut-off events. For 40645/40645 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13431 event pairs, 255 based on Foata normal form. 2/2358 useless extension candidates. Maximal degree in co-relation 14575. Up to 1798 conditions per place. [2024-06-28 01:37:55,612 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 235 selfloop transitions, 86 changer transitions 0/327 dead transitions. [2024-06-28 01:37:55,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 327 transitions, 4357 flow [2024-06-28 01:37:55,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:55,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:55,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:37:55,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-28 01:37:55,614 INFO L175 Difference]: Start difference. First operand has 182 places, 247 transitions, 2973 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:37:55,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 327 transitions, 4357 flow [2024-06-28 01:37:55,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 327 transitions, 4230 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:37:55,703 INFO L231 Difference]: Finished difference. Result has 188 places, 285 transitions, 3660 flow [2024-06-28 01:37:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2846, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3660, PETRI_PLACES=188, PETRI_TRANSITIONS=285} [2024-06-28 01:37:55,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:37:55,704 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 285 transitions, 3660 flow [2024-06-28 01:37:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:55,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:55,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:37:55,705 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:55,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:55,705 INFO L85 PathProgramCache]: Analyzing trace with hash 486191203, now seen corresponding path program 3 times [2024-06-28 01:37:55,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:55,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141768372] [2024-06-28 01:37:55,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:55,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:55,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:56,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:56,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141768372] [2024-06-28 01:37:56,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141768372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:56,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:56,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978555197] [2024-06-28 01:37:56,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:56,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:56,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:37:56,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 285 transitions, 3660 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:56,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:56,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:37:56,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:57,008 INFO L124 PetriNetUnfolderBase]: 1280/2278 cut-off events. [2024-06-28 01:37:57,009 INFO L125 PetriNetUnfolderBase]: For 45207/45373 co-relation queries the response was YES. [2024-06-28 01:37:57,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14554 conditions, 2278 events. 1280/2278 cut-off events. For 45207/45373 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13020 event pairs, 236 based on Foata normal form. 127/2330 useless extension candidates. Maximal degree in co-relation 14463. Up to 1748 conditions per place. [2024-06-28 01:37:57,025 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 58 changer transitions 0/322 dead transitions. [2024-06-28 01:37:57,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 322 transitions, 4423 flow [2024-06-28 01:37:57,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:57,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:37:57,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:37:57,026 INFO L175 Difference]: Start difference. First operand has 188 places, 285 transitions, 3660 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:37:57,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 322 transitions, 4423 flow [2024-06-28 01:37:57,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 322 transitions, 4278 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:57,119 INFO L231 Difference]: Finished difference. Result has 193 places, 288 transitions, 3719 flow [2024-06-28 01:37:57,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3515, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3719, PETRI_PLACES=193, PETRI_TRANSITIONS=288} [2024-06-28 01:37:57,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 01:37:57,120 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 288 transitions, 3719 flow [2024-06-28 01:37:57,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:37:57,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:57,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:37:57,120 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:57,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:57,120 INFO L85 PathProgramCache]: Analyzing trace with hash 486197155, now seen corresponding path program 4 times [2024-06-28 01:37:57,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:57,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561630021] [2024-06-28 01:37:57,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:57,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:57,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:57,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561630021] [2024-06-28 01:37:57,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561630021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:57,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:57,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:57,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136259005] [2024-06-28 01:37:57,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:57,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:57,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:57,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:57,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:57,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:57,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 288 transitions, 3719 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:57,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:57,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:57,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:58,199 INFO L124 PetriNetUnfolderBase]: 1430/2460 cut-off events. [2024-06-28 01:37:58,199 INFO L125 PetriNetUnfolderBase]: For 45681/45681 co-relation queries the response was YES. [2024-06-28 01:37:58,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15582 conditions, 2460 events. 1430/2460 cut-off events. For 45681/45681 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13697 event pairs, 277 based on Foata normal form. 2/2398 useless extension candidates. Maximal degree in co-relation 15489. Up to 1835 conditions per place. [2024-06-28 01:37:58,217 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 244 selfloop transitions, 82 changer transitions 0/332 dead transitions. [2024-06-28 01:37:58,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 332 transitions, 4670 flow [2024-06-28 01:37:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:37:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:37:58,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:37:58,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:37:58,218 INFO L175 Difference]: Start difference. First operand has 193 places, 288 transitions, 3719 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:37:58,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 332 transitions, 4670 flow [2024-06-28 01:37:58,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 332 transitions, 4525 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 01:37:58,327 INFO L231 Difference]: Finished difference. Result has 198 places, 292 transitions, 3847 flow [2024-06-28 01:37:58,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3847, PETRI_PLACES=198, PETRI_TRANSITIONS=292} [2024-06-28 01:37:58,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:37:58,327 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 292 transitions, 3847 flow [2024-06-28 01:37:58,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:58,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:58,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:58,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:37:58,328 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:58,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1614374367, now seen corresponding path program 5 times [2024-06-28 01:37:58,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:58,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105105216] [2024-06-28 01:37:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:58,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:58,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:58,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105105216] [2024-06-28 01:37:58,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105105216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:58,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:58,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:37:58,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865468290] [2024-06-28 01:37:58,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:58,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:37:58,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:58,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:37:58,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:37:58,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:37:58,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 292 transitions, 3847 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:58,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:58,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:37:58,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:59,430 INFO L124 PetriNetUnfolderBase]: 1426/2458 cut-off events. [2024-06-28 01:37:59,430 INFO L125 PetriNetUnfolderBase]: For 45131/45131 co-relation queries the response was YES. [2024-06-28 01:37:59,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15670 conditions, 2458 events. 1426/2458 cut-off events. For 45131/45131 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13790 event pairs, 196 based on Foata normal form. 2/2395 useless extension candidates. Maximal degree in co-relation 15575. Up to 1579 conditions per place. [2024-06-28 01:37:59,449 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 192 selfloop transitions, 127 changer transitions 0/325 dead transitions. [2024-06-28 01:37:59,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 325 transitions, 4691 flow [2024-06-28 01:37:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:37:59,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:37:59,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:37:59,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:37:59,450 INFO L175 Difference]: Start difference. First operand has 198 places, 292 transitions, 3847 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:37:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 325 transitions, 4691 flow [2024-06-28 01:37:59,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 325 transitions, 4539 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-28 01:37:59,578 INFO L231 Difference]: Finished difference. Result has 202 places, 292 transitions, 3962 flow [2024-06-28 01:37:59,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3962, PETRI_PLACES=202, PETRI_TRANSITIONS=292} [2024-06-28 01:37:59,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 01:37:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 292 transitions, 3962 flow [2024-06-28 01:37:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:37:59,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:59,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:59,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:37:59,580 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:59,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1614589569, now seen corresponding path program 4 times [2024-06-28 01:37:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:59,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377892130] [2024-06-28 01:37:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:00,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:00,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:00,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377892130] [2024-06-28 01:38:00,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377892130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:00,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:00,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:38:00,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681464274] [2024-06-28 01:38:00,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:00,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:38:00,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:00,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:38:00,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:38:00,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:00,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 292 transitions, 3962 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 01:38:00,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:00,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:00,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:00,781 INFO L124 PetriNetUnfolderBase]: 1297/2301 cut-off events. [2024-06-28 01:38:00,781 INFO L125 PetriNetUnfolderBase]: For 48691/48788 co-relation queries the response was YES. [2024-06-28 01:38:00,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15245 conditions, 2301 events. 1297/2301 cut-off events. For 48691/48788 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13192 event pairs, 189 based on Foata normal form. 72/2298 useless extension candidates. Maximal degree in co-relation 15149. Up to 1700 conditions per place. [2024-06-28 01:38:00,800 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 216 selfloop transitions, 70 changer transitions 0/321 dead transitions. [2024-06-28 01:38:00,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 321 transitions, 4686 flow [2024-06-28 01:38:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:00,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:38:00,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:38:00,802 INFO L175 Difference]: Start difference. First operand has 202 places, 292 transitions, 3962 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:38:00,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 321 transitions, 4686 flow [2024-06-28 01:38:00,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 321 transitions, 4449 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:00,927 INFO L231 Difference]: Finished difference. Result has 203 places, 294 transitions, 3923 flow [2024-06-28 01:38:00,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3923, PETRI_PLACES=203, PETRI_TRANSITIONS=294} [2024-06-28 01:38:00,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-28 01:38:00,928 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 294 transitions, 3923 flow [2024-06-28 01:38:00,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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) [2024-06-28 01:38:00,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:00,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:00,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:38:00,929 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:00,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:00,929 INFO L85 PathProgramCache]: Analyzing trace with hash 942655207, now seen corresponding path program 6 times [2024-06-28 01:38:00,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:00,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103194451] [2024-06-28 01:38:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:00,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:01,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:01,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:01,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103194451] [2024-06-28 01:38:01,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103194451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:01,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:01,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:01,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902321707] [2024-06-28 01:38:01,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:01,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:01,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:01,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:01,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:01,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:01,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 294 transitions, 3923 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:01,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:01,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:01,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:02,049 INFO L124 PetriNetUnfolderBase]: 1451/2498 cut-off events. [2024-06-28 01:38:02,049 INFO L125 PetriNetUnfolderBase]: For 48083/48083 co-relation queries the response was YES. [2024-06-28 01:38:02,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16053 conditions, 2498 events. 1451/2498 cut-off events. For 48083/48083 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14050 event pairs, 237 based on Foata normal form. 2/2435 useless extension candidates. Maximal degree in co-relation 15956. Up to 1616 conditions per place. [2024-06-28 01:38:02,067 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 206 selfloop transitions, 118 changer transitions 0/330 dead transitions. [2024-06-28 01:38:02,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 330 transitions, 4831 flow [2024-06-28 01:38:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:38:02,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-28 01:38:02,069 INFO L175 Difference]: Start difference. First operand has 203 places, 294 transitions, 3923 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:38:02,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 330 transitions, 4831 flow [2024-06-28 01:38:02,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 330 transitions, 4651 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:02,205 INFO L231 Difference]: Finished difference. Result has 206 places, 297 transitions, 4043 flow [2024-06-28 01:38:02,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3745, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4043, PETRI_PLACES=206, PETRI_TRANSITIONS=297} [2024-06-28 01:38:02,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-28 01:38:02,206 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 297 transitions, 4043 flow [2024-06-28 01:38:02,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:02,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:02,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:02,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:38:02,207 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:02,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:02,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2037398047, now seen corresponding path program 7 times [2024-06-28 01:38:02,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:02,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369524774] [2024-06-28 01:38:02,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:02,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:02,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:02,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:02,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369524774] [2024-06-28 01:38:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369524774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:02,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:02,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:02,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609764325] [2024-06-28 01:38:02,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:02,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:02,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:02,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:02,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:02,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:02,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 297 transitions, 4043 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:02,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:02,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:02,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:03,304 INFO L124 PetriNetUnfolderBase]: 1473/2526 cut-off events. [2024-06-28 01:38:03,304 INFO L125 PetriNetUnfolderBase]: For 47547/47547 co-relation queries the response was YES. [2024-06-28 01:38:03,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16366 conditions, 2526 events. 1473/2526 cut-off events. For 47547/47547 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14241 event pairs, 162 based on Foata normal form. 2/2461 useless extension candidates. Maximal degree in co-relation 16268. Up to 1404 conditions per place. [2024-06-28 01:38:03,323 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 172 selfloop transitions, 167 changer transitions 0/345 dead transitions. [2024-06-28 01:38:03,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 345 transitions, 5183 flow [2024-06-28 01:38:03,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:03,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:03,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:38:03,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-28 01:38:03,325 INFO L175 Difference]: Start difference. First operand has 206 places, 297 transitions, 4043 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:38:03,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 345 transitions, 5183 flow [2024-06-28 01:38:03,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 345 transitions, 4984 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:03,480 INFO L231 Difference]: Finished difference. Result has 210 places, 310 transitions, 4480 flow [2024-06-28 01:38:03,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3846, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4480, PETRI_PLACES=210, PETRI_TRANSITIONS=310} [2024-06-28 01:38:03,480 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-28 01:38:03,480 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 310 transitions, 4480 flow [2024-06-28 01:38:03,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:03,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:03,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:03,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:38:03,481 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:03,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:03,481 INFO L85 PathProgramCache]: Analyzing trace with hash -374745080, now seen corresponding path program 3 times [2024-06-28 01:38:03,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:03,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313886205] [2024-06-28 01:38:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:03,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:03,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:03,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313886205] [2024-06-28 01:38:03,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313886205] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:03,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:03,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:03,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166992958] [2024-06-28 01:38:03,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:03,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:03,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:03,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:03,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:04,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:04,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 310 transitions, 4480 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:04,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:04,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:04,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:04,583 INFO L124 PetriNetUnfolderBase]: 1506/2588 cut-off events. [2024-06-28 01:38:04,583 INFO L125 PetriNetUnfolderBase]: For 53174/53174 co-relation queries the response was YES. [2024-06-28 01:38:04,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17561 conditions, 2588 events. 1506/2588 cut-off events. For 53174/53174 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14710 event pairs, 345 based on Foata normal form. 1/2521 useless extension candidates. Maximal degree in co-relation 17461. Up to 2044 conditions per place. [2024-06-28 01:38:04,605 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 276 selfloop transitions, 84 changer transitions 0/366 dead transitions. [2024-06-28 01:38:04,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 366 transitions, 5928 flow [2024-06-28 01:38:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:04,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:04,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:38:04,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:38:04,606 INFO L175 Difference]: Start difference. First operand has 210 places, 310 transitions, 4480 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:38:04,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 366 transitions, 5928 flow [2024-06-28 01:38:04,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 366 transitions, 5611 flow, removed 80 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:04,774 INFO L231 Difference]: Finished difference. Result has 215 places, 316 transitions, 4512 flow [2024-06-28 01:38:04,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4208, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4512, PETRI_PLACES=215, PETRI_TRANSITIONS=316} [2024-06-28 01:38:04,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-28 01:38:04,774 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 316 transitions, 4512 flow [2024-06-28 01:38:04,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:04,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:04,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:04,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:38:04,778 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:04,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:04,778 INFO L85 PathProgramCache]: Analyzing trace with hash -640657841, now seen corresponding path program 5 times [2024-06-28 01:38:04,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:04,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957349626] [2024-06-28 01:38:04,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:04,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:05,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:05,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957349626] [2024-06-28 01:38:05,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957349626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:05,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:05,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073495455] [2024-06-28 01:38:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:05,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:05,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:38:05,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 316 transitions, 4512 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:38:05,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:05,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:38:05,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:06,100 INFO L124 PetriNetUnfolderBase]: 1350/2399 cut-off events. [2024-06-28 01:38:06,100 INFO L125 PetriNetUnfolderBase]: For 51748/51760 co-relation queries the response was YES. [2024-06-28 01:38:06,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16725 conditions, 2399 events. 1350/2399 cut-off events. For 51748/51760 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14123 event pairs, 156 based on Foata normal form. 2/2322 useless extension candidates. Maximal degree in co-relation 16623. Up to 1763 conditions per place. [2024-06-28 01:38:06,121 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 236 selfloop transitions, 73 changer transitions 0/344 dead transitions. [2024-06-28 01:38:06,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 344 transitions, 5286 flow [2024-06-28 01:38:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:38:06,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-28 01:38:06,123 INFO L175 Difference]: Start difference. First operand has 215 places, 316 transitions, 4512 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:38:06,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 344 transitions, 5286 flow [2024-06-28 01:38:06,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 344 transitions, 5153 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:06,294 INFO L231 Difference]: Finished difference. Result has 219 places, 318 transitions, 4580 flow [2024-06-28 01:38:06,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4580, PETRI_PLACES=219, PETRI_TRANSITIONS=318} [2024-06-28 01:38:06,294 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-28 01:38:06,295 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 318 transitions, 4580 flow [2024-06-28 01:38:06,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 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) [2024-06-28 01:38:06,295 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:06,295 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:06,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:38:06,295 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:06,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1991662719, now seen corresponding path program 8 times [2024-06-28 01:38:06,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558091405] [2024-06-28 01:38:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:06,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:06,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:06,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558091405] [2024-06-28 01:38:06,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558091405] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:06,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:06,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:06,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431652460] [2024-06-28 01:38:06,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:06,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:06,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:06,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:06,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:06,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 318 transitions, 4580 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:06,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:06,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:06,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:07,395 INFO L124 PetriNetUnfolderBase]: 1526/2616 cut-off events. [2024-06-28 01:38:07,396 INFO L125 PetriNetUnfolderBase]: For 53484/53484 co-relation queries the response was YES. [2024-06-28 01:38:07,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17804 conditions, 2616 events. 1526/2616 cut-off events. For 53484/53484 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14810 event pairs, 248 based on Foata normal form. 2/2548 useless extension candidates. Maximal degree in co-relation 17700. Up to 1472 conditions per place. [2024-06-28 01:38:07,416 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 206 selfloop transitions, 147 changer transitions 0/359 dead transitions. [2024-06-28 01:38:07,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 359 transitions, 5730 flow [2024-06-28 01:38:07,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:38:07,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:38:07,418 INFO L175 Difference]: Start difference. First operand has 219 places, 318 transitions, 4580 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:38:07,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 359 transitions, 5730 flow [2024-06-28 01:38:07,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 359 transitions, 5545 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:07,572 INFO L231 Difference]: Finished difference. Result has 223 places, 326 transitions, 4874 flow [2024-06-28 01:38:07,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4874, PETRI_PLACES=223, PETRI_TRANSITIONS=326} [2024-06-28 01:38:07,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-28 01:38:07,573 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 326 transitions, 4874 flow [2024-06-28 01:38:07,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:07,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:07,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:07,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:38:07,573 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:07,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:07,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1991871969, now seen corresponding path program 9 times [2024-06-28 01:38:07,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:07,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048477539] [2024-06-28 01:38:07,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:07,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048477539] [2024-06-28 01:38:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048477539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:08,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:08,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903644690] [2024-06-28 01:38:08,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:08,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:08,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:08,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:08,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 326 transitions, 4874 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:08,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:08,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:08,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:08,691 INFO L124 PetriNetUnfolderBase]: 1572/2685 cut-off events. [2024-06-28 01:38:08,691 INFO L125 PetriNetUnfolderBase]: For 58602/58602 co-relation queries the response was YES. [2024-06-28 01:38:08,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18761 conditions, 2685 events. 1572/2685 cut-off events. For 58602/58602 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15222 event pairs, 253 based on Foata normal form. 2/2617 useless extension candidates. Maximal degree in co-relation 18655. Up to 1511 conditions per place. [2024-06-28 01:38:08,714 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 213 selfloop transitions, 151 changer transitions 0/370 dead transitions. [2024-06-28 01:38:08,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 370 transitions, 6195 flow [2024-06-28 01:38:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:08,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 01:38:08,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-28 01:38:08,716 INFO L175 Difference]: Start difference. First operand has 223 places, 326 transitions, 4874 flow. Second operand 9 states and 163 transitions. [2024-06-28 01:38:08,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 370 transitions, 6195 flow [2024-06-28 01:38:08,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 370 transitions, 5700 flow, removed 82 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:08,970 INFO L231 Difference]: Finished difference. Result has 227 places, 335 transitions, 4908 flow [2024-06-28 01:38:08,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4908, PETRI_PLACES=227, PETRI_TRANSITIONS=335} [2024-06-28 01:38:08,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 01:38:08,970 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 335 transitions, 4908 flow [2024-06-28 01:38:08,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:08,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:08,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:38:08,971 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:08,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:08,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2046602257, now seen corresponding path program 10 times [2024-06-28 01:38:08,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:08,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868763193] [2024-06-28 01:38:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:08,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:09,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:09,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868763193] [2024-06-28 01:38:09,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868763193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:09,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:09,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:09,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60403699] [2024-06-28 01:38:09,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:09,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:09,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:09,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:09,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 335 transitions, 4908 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:09,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:09,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:09,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:10,126 INFO L124 PetriNetUnfolderBase]: 1592/2715 cut-off events. [2024-06-28 01:38:10,127 INFO L125 PetriNetUnfolderBase]: For 57836/57836 co-relation queries the response was YES. [2024-06-28 01:38:10,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18470 conditions, 2715 events. 1592/2715 cut-off events. For 57836/57836 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15500 event pairs, 177 based on Foata normal form. 2/2647 useless extension candidates. Maximal degree in co-relation 18363. Up to 1528 conditions per place. [2024-06-28 01:38:10,145 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 197 selfloop transitions, 168 changer transitions 0/371 dead transitions. [2024-06-28 01:38:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 371 transitions, 5996 flow [2024-06-28 01:38:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:10,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:38:10,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 01:38:10,147 INFO L175 Difference]: Start difference. First operand has 227 places, 335 transitions, 4908 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:38:10,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 371 transitions, 5996 flow [2024-06-28 01:38:10,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 371 transitions, 5702 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:10,329 INFO L231 Difference]: Finished difference. Result has 231 places, 338 transitions, 5008 flow [2024-06-28 01:38:10,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5008, PETRI_PLACES=231, PETRI_TRANSITIONS=338} [2024-06-28 01:38:10,329 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-28 01:38:10,329 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 338 transitions, 5008 flow [2024-06-28 01:38:10,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:10,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:10,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:10,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:38:10,330 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:10,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash -383942129, now seen corresponding path program 11 times [2024-06-28 01:38:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97542889] [2024-06-28 01:38:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:10,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:10,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:10,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97542889] [2024-06-28 01:38:10,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97542889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:10,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:10,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:10,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108442052] [2024-06-28 01:38:10,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:10,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:10,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:10,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:10,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:10,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:10,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 338 transitions, 5008 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:10,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:10,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:10,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:11,441 INFO L124 PetriNetUnfolderBase]: 1588/2712 cut-off events. [2024-06-28 01:38:11,441 INFO L125 PetriNetUnfolderBase]: For 57787/57787 co-relation queries the response was YES. [2024-06-28 01:38:11,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18473 conditions, 2712 events. 1588/2712 cut-off events. For 57787/57787 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15501 event pairs, 175 based on Foata normal form. 2/2643 useless extension candidates. Maximal degree in co-relation 18365. Up to 1525 conditions per place. [2024-06-28 01:38:11,463 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 199 selfloop transitions, 166 changer transitions 0/371 dead transitions. [2024-06-28 01:38:11,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 371 transitions, 5964 flow [2024-06-28 01:38:11,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:11,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:38:11,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-28 01:38:11,464 INFO L175 Difference]: Start difference. First operand has 231 places, 338 transitions, 5008 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:38:11,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 371 transitions, 5964 flow [2024-06-28 01:38:11,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 371 transitions, 5557 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:11,683 INFO L231 Difference]: Finished difference. Result has 233 places, 338 transitions, 4940 flow [2024-06-28 01:38:11,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4601, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4940, PETRI_PLACES=233, PETRI_TRANSITIONS=338} [2024-06-28 01:38:11,683 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 01:38:11,684 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 338 transitions, 4940 flow [2024-06-28 01:38:11,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:11,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:11,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:11,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:38:11,684 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:11,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:11,684 INFO L85 PathProgramCache]: Analyzing trace with hash -383941850, now seen corresponding path program 4 times [2024-06-28 01:38:11,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:11,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610510157] [2024-06-28 01:38:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:11,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:12,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:12,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:12,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610510157] [2024-06-28 01:38:12,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610510157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:12,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:12,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:12,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914925753] [2024-06-28 01:38:12,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:12,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:12,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:12,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:12,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:12,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:12,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 338 transitions, 4940 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:12,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:12,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:12,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:12,819 INFO L124 PetriNetUnfolderBase]: 1601/2734 cut-off events. [2024-06-28 01:38:12,820 INFO L125 PetriNetUnfolderBase]: For 59092/59092 co-relation queries the response was YES. [2024-06-28 01:38:12,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18530 conditions, 2734 events. 1601/2734 cut-off events. For 59092/59092 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15653 event pairs, 354 based on Foata normal form. 1/2666 useless extension candidates. Maximal degree in co-relation 18422. Up to 2181 conditions per place. [2024-06-28 01:38:12,845 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 305 selfloop transitions, 80 changer transitions 0/391 dead transitions. [2024-06-28 01:38:12,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 391 transitions, 6358 flow [2024-06-28 01:38:12,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:12,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:12,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:38:12,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:38:12,846 INFO L175 Difference]: Start difference. First operand has 233 places, 338 transitions, 4940 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:38:12,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 391 transitions, 6358 flow [2024-06-28 01:38:13,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 391 transitions, 5906 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:13,045 INFO L231 Difference]: Finished difference. Result has 234 places, 340 transitions, 4722 flow [2024-06-28 01:38:13,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4722, PETRI_PLACES=234, PETRI_TRANSITIONS=340} [2024-06-28 01:38:13,045 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-28 01:38:13,045 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 340 transitions, 4722 flow [2024-06-28 01:38:13,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:13,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:13,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:13,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:38:13,046 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:13,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:13,046 INFO L85 PathProgramCache]: Analyzing trace with hash -2037071338, now seen corresponding path program 5 times [2024-06-28 01:38:13,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:13,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011360030] [2024-06-28 01:38:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:13,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:13,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:13,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:13,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011360030] [2024-06-28 01:38:13,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011360030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:13,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:13,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:13,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328254605] [2024-06-28 01:38:13,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:13,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:13,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:13,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:13,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:13,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:13,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 340 transitions, 4722 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:13,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:13,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:13,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:14,392 INFO L124 PetriNetUnfolderBase]: 1599/2741 cut-off events. [2024-06-28 01:38:14,392 INFO L125 PetriNetUnfolderBase]: For 58825/58825 co-relation queries the response was YES. [2024-06-28 01:38:14,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17987 conditions, 2741 events. 1599/2741 cut-off events. For 58825/58825 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15689 event pairs, 473 based on Foata normal form. 1/2672 useless extension candidates. Maximal degree in co-relation 17878. Up to 2446 conditions per place. [2024-06-28 01:38:14,415 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 344 selfloop transitions, 25 changer transitions 0/375 dead transitions. [2024-06-28 01:38:14,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 375 transitions, 5630 flow [2024-06-28 01:38:14,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:38:14,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:38:14,417 INFO L175 Difference]: Start difference. First operand has 234 places, 340 transitions, 4722 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:38:14,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 375 transitions, 5630 flow [2024-06-28 01:38:14,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 375 transitions, 5470 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:14,605 INFO L231 Difference]: Finished difference. Result has 238 places, 340 transitions, 4618 flow [2024-06-28 01:38:14,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4562, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4618, PETRI_PLACES=238, PETRI_TRANSITIONS=340} [2024-06-28 01:38:14,606 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-28 01:38:14,606 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 340 transitions, 4618 flow [2024-06-28 01:38:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:14,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:14,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:38:14,607 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:14,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1991872248, now seen corresponding path program 6 times [2024-06-28 01:38:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:14,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697058810] [2024-06-28 01:38:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697058810] [2024-06-28 01:38:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697058810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259864381] [2024-06-28 01:38:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:15,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:15,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:15,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 340 transitions, 4618 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:15,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:15,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:15,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:15,722 INFO L124 PetriNetUnfolderBase]: 1597/2735 cut-off events. [2024-06-28 01:38:15,722 INFO L125 PetriNetUnfolderBase]: For 57489/57489 co-relation queries the response was YES. [2024-06-28 01:38:15,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17622 conditions, 2735 events. 1597/2735 cut-off events. For 57489/57489 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15703 event pairs, 363 based on Foata normal form. 1/2664 useless extension candidates. Maximal degree in co-relation 17512. Up to 2177 conditions per place. [2024-06-28 01:38:15,745 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 309 selfloop transitions, 74 changer transitions 0/389 dead transitions. [2024-06-28 01:38:15,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 389 transitions, 5784 flow [2024-06-28 01:38:15,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:15,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:38:15,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-28 01:38:15,746 INFO L175 Difference]: Start difference. First operand has 238 places, 340 transitions, 4618 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:38:15,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 389 transitions, 5784 flow [2024-06-28 01:38:15,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 389 transitions, 5558 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-28 01:38:15,953 INFO L231 Difference]: Finished difference. Result has 235 places, 340 transitions, 4546 flow [2024-06-28 01:38:15,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4392, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4546, PETRI_PLACES=235, PETRI_TRANSITIONS=340} [2024-06-28 01:38:15,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 01:38:15,954 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 340 transitions, 4546 flow [2024-06-28 01:38:15,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:15,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:15,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:15,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:38:15,954 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:15,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1991864529, now seen corresponding path program 12 times [2024-06-28 01:38:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:15,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402397187] [2024-06-28 01:38:15,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:15,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:16,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:16,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402397187] [2024-06-28 01:38:16,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402397187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:16,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:16,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:38:16,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851948366] [2024-06-28 01:38:16,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:16,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:38:16,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:16,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:38:16,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:38:16,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:16,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 340 transitions, 4546 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:16,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:16,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:16,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:17,039 INFO L124 PetriNetUnfolderBase]: 1593/2724 cut-off events. [2024-06-28 01:38:17,039 INFO L125 PetriNetUnfolderBase]: For 56712/56712 co-relation queries the response was YES. [2024-06-28 01:38:17,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17500 conditions, 2724 events. 1593/2724 cut-off events. For 56712/56712 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15515 event pairs, 251 based on Foata normal form. 2/2653 useless extension candidates. Maximal degree in co-relation 17391. Up to 1536 conditions per place. [2024-06-28 01:38:17,062 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 214 selfloop transitions, 153 changer transitions 0/373 dead transitions. [2024-06-28 01:38:17,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 373 transitions, 5514 flow [2024-06-28 01:38:17,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-28 01:38:17,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:38:17,063 INFO L175 Difference]: Start difference. First operand has 235 places, 340 transitions, 4546 flow. Second operand 9 states and 162 transitions. [2024-06-28 01:38:17,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 373 transitions, 5514 flow [2024-06-28 01:38:17,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 373 transitions, 5242 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:17,234 INFO L231 Difference]: Finished difference. Result has 235 places, 340 transitions, 4586 flow [2024-06-28 01:38:17,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4274, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4586, PETRI_PLACES=235, PETRI_TRANSITIONS=340} [2024-06-28 01:38:17,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 01:38:17,234 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 340 transitions, 4586 flow [2024-06-28 01:38:17,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 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) [2024-06-28 01:38:17,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:17,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:17,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:38:17,235 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:17,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2037059434, now seen corresponding path program 1 times [2024-06-28 01:38:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:17,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603825566] [2024-06-28 01:38:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:17,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:17,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:17,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:17,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:17,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603825566] [2024-06-28 01:38:17,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603825566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:17,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:17,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:17,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061262904] [2024-06-28 01:38:17,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:17,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:18,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:18,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 340 transitions, 4586 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:18,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:18,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:18,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:18,607 INFO L124 PetriNetUnfolderBase]: 1590/2721 cut-off events. [2024-06-28 01:38:18,607 INFO L125 PetriNetUnfolderBase]: For 57430/57430 co-relation queries the response was YES. [2024-06-28 01:38:18,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17573 conditions, 2721 events. 1590/2721 cut-off events. For 57430/57430 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 15479 event pairs, 472 based on Foata normal form. 2/2656 useless extension candidates. Maximal degree in co-relation 17463. Up to 2426 conditions per place. [2024-06-28 01:38:18,629 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 333 selfloop transitions, 33 changer transitions 0/372 dead transitions. [2024-06-28 01:38:18,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 372 transitions, 5486 flow [2024-06-28 01:38:18,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:18,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:18,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:38:18,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:38:18,630 INFO L175 Difference]: Start difference. First operand has 235 places, 340 transitions, 4586 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:38:18,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 372 transitions, 5486 flow [2024-06-28 01:38:18,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 372 transitions, 5166 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:18,812 INFO L231 Difference]: Finished difference. Result has 238 places, 342 transitions, 4385 flow [2024-06-28 01:38:18,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4266, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4385, PETRI_PLACES=238, PETRI_TRANSITIONS=342} [2024-06-28 01:38:18,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 197 predicate places. [2024-06-28 01:38:18,813 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 342 transitions, 4385 flow [2024-06-28 01:38:18,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:18,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:18,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:18,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:38:18,813 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:18,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1715775969, now seen corresponding path program 1 times [2024-06-28 01:38:18,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:18,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563826390] [2024-06-28 01:38:18,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:18,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563826390] [2024-06-28 01:38:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563826390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:18,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:38:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592648936] [2024-06-28 01:38:18,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:38:18,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:38:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:38:18,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:38:18,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 342 transitions, 4385 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2024-06-28 01:38:18,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:18,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:38:18,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:19,352 INFO L124 PetriNetUnfolderBase]: 1182/2261 cut-off events. [2024-06-28 01:38:19,353 INFO L125 PetriNetUnfolderBase]: For 47224/47678 co-relation queries the response was YES. [2024-06-28 01:38:19,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12822 conditions, 2261 events. 1182/2261 cut-off events. For 47224/47678 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14503 event pairs, 151 based on Foata normal form. 203/2349 useless extension candidates. Maximal degree in co-relation 12712. Up to 738 conditions per place. [2024-06-28 01:38:19,372 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 89 selfloop transitions, 25 changer transitions 115/403 dead transitions. [2024-06-28 01:38:19,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 403 transitions, 5195 flow [2024-06-28 01:38:19,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:38:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:38:19,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-28 01:38:19,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-06-28 01:38:19,374 INFO L175 Difference]: Start difference. First operand has 238 places, 342 transitions, 4385 flow. Second operand 8 states and 178 transitions. [2024-06-28 01:38:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 403 transitions, 5195 flow [2024-06-28 01:38:19,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 403 transitions, 5092 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:19,529 INFO L231 Difference]: Finished difference. Result has 242 places, 271 transitions, 3543 flow [2024-06-28 01:38:19,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4282, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3543, PETRI_PLACES=242, PETRI_TRANSITIONS=271} [2024-06-28 01:38:19,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 201 predicate places. [2024-06-28 01:38:19,530 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 271 transitions, 3543 flow [2024-06-28 01:38:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 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) [2024-06-28 01:38:19,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:19,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:19,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:38:19,531 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:19,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:19,531 INFO L85 PathProgramCache]: Analyzing trace with hash -870585572, now seen corresponding path program 1 times [2024-06-28 01:38:19,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:19,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410444435] [2024-06-28 01:38:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:19,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:20,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:20,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:20,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410444435] [2024-06-28 01:38:20,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410444435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:20,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:20,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:20,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225963921] [2024-06-28 01:38:20,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:20,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:20,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:20,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:20,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:20,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:20,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 271 transitions, 3543 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:20,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:20,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:20,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:20,934 INFO L124 PetriNetUnfolderBase]: 1465/2497 cut-off events. [2024-06-28 01:38:20,934 INFO L125 PetriNetUnfolderBase]: For 54560/54560 co-relation queries the response was YES. [2024-06-28 01:38:20,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16303 conditions, 2497 events. 1465/2497 cut-off events. For 54560/54560 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13746 event pairs, 305 based on Foata normal form. 2/2498 useless extension candidates. Maximal degree in co-relation 16188. Up to 2167 conditions per place. [2024-06-28 01:38:20,958 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 268 selfloop transitions, 43 changer transitions 0/317 dead transitions. [2024-06-28 01:38:20,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 317 transitions, 4457 flow [2024-06-28 01:38:20,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:20,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:38:20,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:38:20,959 INFO L175 Difference]: Start difference. First operand has 242 places, 271 transitions, 3543 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:38:20,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 317 transitions, 4457 flow [2024-06-28 01:38:21,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 317 transitions, 4247 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-28 01:38:21,220 INFO L231 Difference]: Finished difference. Result has 237 places, 282 transitions, 3626 flow [2024-06-28 01:38:21,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3343, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3626, PETRI_PLACES=237, PETRI_TRANSITIONS=282} [2024-06-28 01:38:21,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 01:38:21,221 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 282 transitions, 3626 flow [2024-06-28 01:38:21,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:21,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:21,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:21,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:38:21,221 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:21,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:21,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1156952766, now seen corresponding path program 2 times [2024-06-28 01:38:21,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:21,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696255214] [2024-06-28 01:38:21,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:21,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696255214] [2024-06-28 01:38:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696255214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:21,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489111400] [2024-06-28 01:38:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:21,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:21,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:21,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 282 transitions, 3626 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:21,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:21,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:21,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:22,690 INFO L124 PetriNetUnfolderBase]: 1511/2584 cut-off events. [2024-06-28 01:38:22,691 INFO L125 PetriNetUnfolderBase]: For 54143/54143 co-relation queries the response was YES. [2024-06-28 01:38:22,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16293 conditions, 2584 events. 1511/2584 cut-off events. For 54143/54143 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14507 event pairs, 409 based on Foata normal form. 2/2540 useless extension candidates. Maximal degree in co-relation 16184. Up to 2250 conditions per place. [2024-06-28 01:38:22,709 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 41 changer transitions 0/326 dead transitions. [2024-06-28 01:38:22,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 326 transitions, 4487 flow [2024-06-28 01:38:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:38:22,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:38:22,710 INFO L175 Difference]: Start difference. First operand has 237 places, 282 transitions, 3626 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:38:22,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 326 transitions, 4487 flow [2024-06-28 01:38:22,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 326 transitions, 4428 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:22,885 INFO L231 Difference]: Finished difference. Result has 246 places, 289 transitions, 3765 flow [2024-06-28 01:38:22,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3569, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3765, PETRI_PLACES=246, PETRI_TRANSITIONS=289} [2024-06-28 01:38:22,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-28 01:38:22,886 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 289 transitions, 3765 flow [2024-06-28 01:38:22,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:22,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:22,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:22,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:38:22,886 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:22,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:22,886 INFO L85 PathProgramCache]: Analyzing trace with hash -196358482, now seen corresponding path program 3 times [2024-06-28 01:38:22,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:22,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791930996] [2024-06-28 01:38:22,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:22,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:23,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:23,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:23,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791930996] [2024-06-28 01:38:23,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791930996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:23,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:23,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:23,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931487768] [2024-06-28 01:38:23,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:23,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:23,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 289 transitions, 3765 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:23,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:23,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:23,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:24,295 INFO L124 PetriNetUnfolderBase]: 1573/2700 cut-off events. [2024-06-28 01:38:24,295 INFO L125 PetriNetUnfolderBase]: For 57673/57673 co-relation queries the response was YES. [2024-06-28 01:38:24,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 2700 events. 1573/2700 cut-off events. For 57673/57673 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15402 event pairs, 342 based on Foata normal form. 2/2656 useless extension candidates. Maximal degree in co-relation 16989. Up to 2292 conditions per place. [2024-06-28 01:38:24,319 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 281 selfloop transitions, 56 changer transitions 0/343 dead transitions. [2024-06-28 01:38:24,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 343 transitions, 4862 flow [2024-06-28 01:38:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:38:24,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:38:24,320 INFO L175 Difference]: Start difference. First operand has 246 places, 289 transitions, 3765 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:38:24,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 343 transitions, 4862 flow [2024-06-28 01:38:24,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 343 transitions, 4732 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:24,569 INFO L231 Difference]: Finished difference. Result has 253 places, 309 transitions, 4111 flow [2024-06-28 01:38:24,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4111, PETRI_PLACES=253, PETRI_TRANSITIONS=309} [2024-06-28 01:38:24,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-28 01:38:24,570 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 309 transitions, 4111 flow [2024-06-28 01:38:24,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:24,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:24,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:38:24,570 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:24,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash -924462996, now seen corresponding path program 4 times [2024-06-28 01:38:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064367644] [2024-06-28 01:38:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:24,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:25,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:25,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064367644] [2024-06-28 01:38:25,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064367644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:25,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:25,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:25,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302811837] [2024-06-28 01:38:25,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:25,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:25,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:25,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:25,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:25,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:25,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 309 transitions, 4111 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:25,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:25,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:25,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:26,013 INFO L124 PetriNetUnfolderBase]: 1601/2750 cut-off events. [2024-06-28 01:38:26,014 INFO L125 PetriNetUnfolderBase]: For 59796/59796 co-relation queries the response was YES. [2024-06-28 01:38:26,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17795 conditions, 2750 events. 1601/2750 cut-off events. For 59796/59796 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15786 event pairs, 409 based on Foata normal form. 2/2706 useless extension candidates. Maximal degree in co-relation 17679. Up to 2363 conditions per place. [2024-06-28 01:38:26,035 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 282 selfloop transitions, 63 changer transitions 0/351 dead transitions. [2024-06-28 01:38:26,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 351 transitions, 5108 flow [2024-06-28 01:38:26,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:26,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:26,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:38:26,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:38:26,037 INFO L175 Difference]: Start difference. First operand has 253 places, 309 transitions, 4111 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:38:26,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 351 transitions, 5108 flow [2024-06-28 01:38:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 351 transitions, 5064 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-28 01:38:26,275 INFO L231 Difference]: Finished difference. Result has 262 places, 317 transitions, 4392 flow [2024-06-28 01:38:26,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4073, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4392, PETRI_PLACES=262, PETRI_TRANSITIONS=317} [2024-06-28 01:38:26,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-28 01:38:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 317 transitions, 4392 flow [2024-06-28 01:38:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:26,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:26,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:26,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:38:26,276 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:26,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -924134520, now seen corresponding path program 1 times [2024-06-28 01:38:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537251680] [2024-06-28 01:38:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:26,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:26,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537251680] [2024-06-28 01:38:26,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537251680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:26,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:26,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:26,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794670106] [2024-06-28 01:38:26,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:26,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:26,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:26,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:26,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:27,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:27,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 317 transitions, 4392 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:27,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:27,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:27,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:27,703 INFO L124 PetriNetUnfolderBase]: 1631/2798 cut-off events. [2024-06-28 01:38:27,704 INFO L125 PetriNetUnfolderBase]: For 61759/61759 co-relation queries the response was YES. [2024-06-28 01:38:27,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18387 conditions, 2798 events. 1631/2798 cut-off events. For 61759/61759 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 16077 event pairs, 415 based on Foata normal form. 1/2753 useless extension candidates. Maximal degree in co-relation 18268. Up to 2412 conditions per place. [2024-06-28 01:38:27,723 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 284 selfloop transitions, 67 changer transitions 0/357 dead transitions. [2024-06-28 01:38:27,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 357 transitions, 5350 flow [2024-06-28 01:38:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:27,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:27,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:38:27,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:38:27,724 INFO L175 Difference]: Start difference. First operand has 262 places, 317 transitions, 4392 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:38:27,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 357 transitions, 5350 flow [2024-06-28 01:38:27,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 357 transitions, 5242 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:27,969 INFO L231 Difference]: Finished difference. Result has 267 places, 323 transitions, 4546 flow [2024-06-28 01:38:27,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4284, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4546, PETRI_PLACES=267, PETRI_TRANSITIONS=323} [2024-06-28 01:38:27,969 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-28 01:38:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 323 transitions, 4546 flow [2024-06-28 01:38:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:27,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:27,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:27,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:38:27,970 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:27,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash -924294666, now seen corresponding path program 5 times [2024-06-28 01:38:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:27,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911695526] [2024-06-28 01:38:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:27,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:28,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911695526] [2024-06-28 01:38:28,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911695526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:28,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:28,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:28,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129556192] [2024-06-28 01:38:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:28,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:28,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 323 transitions, 4546 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:28,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:28,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:29,380 INFO L124 PetriNetUnfolderBase]: 1657/2839 cut-off events. [2024-06-28 01:38:29,380 INFO L125 PetriNetUnfolderBase]: For 64252/64252 co-relation queries the response was YES. [2024-06-28 01:38:29,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18649 conditions, 2839 events. 1657/2839 cut-off events. For 64252/64252 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 16417 event pairs, 413 based on Foata normal form. 2/2795 useless extension candidates. Maximal degree in co-relation 18529. Up to 2402 conditions per place. [2024-06-28 01:38:29,406 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 292 selfloop transitions, 61 changer transitions 0/359 dead transitions. [2024-06-28 01:38:29,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 359 transitions, 5421 flow [2024-06-28 01:38:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:29,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:38:29,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:38:29,407 INFO L175 Difference]: Start difference. First operand has 267 places, 323 transitions, 4546 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:38:29,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 359 transitions, 5421 flow [2024-06-28 01:38:29,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 359 transitions, 5273 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:29,724 INFO L231 Difference]: Finished difference. Result has 270 places, 325 transitions, 4560 flow [2024-06-28 01:38:29,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4398, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4560, PETRI_PLACES=270, PETRI_TRANSITIONS=325} [2024-06-28 01:38:29,725 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-28 01:38:29,725 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 325 transitions, 4560 flow [2024-06-28 01:38:29,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:29,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:29,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:29,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:38:29,726 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:29,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:29,727 INFO L85 PathProgramCache]: Analyzing trace with hash 476829356, now seen corresponding path program 1 times [2024-06-28 01:38:29,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:29,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650834824] [2024-06-28 01:38:29,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:29,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650834824] [2024-06-28 01:38:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650834824] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:30,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:30,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:30,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208995754] [2024-06-28 01:38:30,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:30,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:30,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:30,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:30,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:30,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:30,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 325 transitions, 4560 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:30,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:30,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:30,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:30,965 INFO L124 PetriNetUnfolderBase]: 1677/2868 cut-off events. [2024-06-28 01:38:30,965 INFO L125 PetriNetUnfolderBase]: For 65540/65540 co-relation queries the response was YES. [2024-06-28 01:38:30,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18904 conditions, 2868 events. 1677/2868 cut-off events. For 65540/65540 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16559 event pairs, 362 based on Foata normal form. 2/2824 useless extension candidates. Maximal degree in co-relation 18782. Up to 2498 conditions per place. [2024-06-28 01:38:30,994 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 303 selfloop transitions, 58 changer transitions 0/367 dead transitions. [2024-06-28 01:38:30,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 367 transitions, 5520 flow [2024-06-28 01:38:30,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:30,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:30,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:38:30,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:38:30,996 INFO L175 Difference]: Start difference. First operand has 270 places, 325 transitions, 4560 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:38:30,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 367 transitions, 5520 flow [2024-06-28 01:38:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 367 transitions, 5414 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:38:31,299 INFO L231 Difference]: Finished difference. Result has 275 places, 328 transitions, 4642 flow [2024-06-28 01:38:31,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4642, PETRI_PLACES=275, PETRI_TRANSITIONS=328} [2024-06-28 01:38:31,300 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-28 01:38:31,300 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 328 transitions, 4642 flow [2024-06-28 01:38:31,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:31,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:31,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:31,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:38:31,300 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:31,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:31,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1353564512, now seen corresponding path program 6 times [2024-06-28 01:38:31,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:31,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124591452] [2024-06-28 01:38:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:31,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124591452] [2024-06-28 01:38:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124591452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:32,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:32,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937208457] [2024-06-28 01:38:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:32,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:32,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:32,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:32,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:32,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 328 transitions, 4642 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:32,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:32,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:32,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:33,001 INFO L124 PetriNetUnfolderBase]: 1759/3016 cut-off events. [2024-06-28 01:38:33,002 INFO L125 PetriNetUnfolderBase]: For 69696/69696 co-relation queries the response was YES. [2024-06-28 01:38:33,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19775 conditions, 3016 events. 1759/3016 cut-off events. For 69696/69696 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17752 event pairs, 450 based on Foata normal form. 2/2972 useless extension candidates. Maximal degree in co-relation 19652. Up to 2617 conditions per place. [2024-06-28 01:38:33,031 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 320 selfloop transitions, 56 changer transitions 0/382 dead transitions. [2024-06-28 01:38:33,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 382 transitions, 5738 flow [2024-06-28 01:38:33,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:33,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:38:33,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:38:33,032 INFO L175 Difference]: Start difference. First operand has 275 places, 328 transitions, 4642 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:38:33,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 382 transitions, 5738 flow [2024-06-28 01:38:33,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 382 transitions, 5568 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:33,365 INFO L231 Difference]: Finished difference. Result has 279 places, 342 transitions, 4805 flow [2024-06-28 01:38:33,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4480, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4805, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2024-06-28 01:38:33,366 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 01:38:33,366 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 4805 flow [2024-06-28 01:38:33,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:33,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:33,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:33,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:38:33,367 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:33,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:33,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1502290404, now seen corresponding path program 7 times [2024-06-28 01:38:33,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:33,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175869776] [2024-06-28 01:38:33,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:33,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:34,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175869776] [2024-06-28 01:38:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175869776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909361215] [2024-06-28 01:38:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:34,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:34,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:34,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:34,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:34,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:34,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 4805 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:34,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:34,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:34,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:34,955 INFO L124 PetriNetUnfolderBase]: 1846/3170 cut-off events. [2024-06-28 01:38:34,956 INFO L125 PetriNetUnfolderBase]: For 76022/76022 co-relation queries the response was YES. [2024-06-28 01:38:34,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20918 conditions, 3170 events. 1846/3170 cut-off events. For 76022/76022 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19030 event pairs, 481 based on Foata normal form. 2/3126 useless extension candidates. Maximal degree in co-relation 20792. Up to 2688 conditions per place. [2024-06-28 01:38:34,986 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 329 selfloop transitions, 61 changer transitions 0/396 dead transitions. [2024-06-28 01:38:34,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 396 transitions, 6112 flow [2024-06-28 01:38:34,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:34,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:34,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:38:34,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:38:34,987 INFO L175 Difference]: Start difference. First operand has 279 places, 342 transitions, 4805 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:38:34,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 396 transitions, 6112 flow [2024-06-28 01:38:35,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 396 transitions, 6025 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:38:35,350 INFO L231 Difference]: Finished difference. Result has 286 places, 355 transitions, 5122 flow [2024-06-28 01:38:35,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4718, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5122, PETRI_PLACES=286, PETRI_TRANSITIONS=355} [2024-06-28 01:38:35,350 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 01:38:35,350 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 355 transitions, 5122 flow [2024-06-28 01:38:35,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:35,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:35,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:35,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:38:35,351 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:35,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:35,351 INFO L85 PathProgramCache]: Analyzing trace with hash -304938612, now seen corresponding path program 8 times [2024-06-28 01:38:35,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:35,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652327488] [2024-06-28 01:38:35,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:35,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:36,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:36,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652327488] [2024-06-28 01:38:36,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652327488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:36,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:36,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:36,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266148017] [2024-06-28 01:38:36,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:36,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:36,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:36,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:36,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:36,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 355 transitions, 5122 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:36,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:36,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:36,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:36,942 INFO L124 PetriNetUnfolderBase]: 1843/3165 cut-off events. [2024-06-28 01:38:36,942 INFO L125 PetriNetUnfolderBase]: For 75548/75548 co-relation queries the response was YES. [2024-06-28 01:38:36,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21034 conditions, 3165 events. 1843/3165 cut-off events. For 75548/75548 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 18979 event pairs, 487 based on Foata normal form. 2/3121 useless extension candidates. Maximal degree in co-relation 20905. Up to 2758 conditions per place. [2024-06-28 01:38:36,975 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 328 selfloop transitions, 61 changer transitions 0/395 dead transitions. [2024-06-28 01:38:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 395 transitions, 6094 flow [2024-06-28 01:38:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:38:36,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:38:36,977 INFO L175 Difference]: Start difference. First operand has 286 places, 355 transitions, 5122 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:38:36,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 395 transitions, 6094 flow [2024-06-28 01:38:37,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 395 transitions, 6020 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:37,371 INFO L231 Difference]: Finished difference. Result has 292 places, 355 transitions, 5179 flow [2024-06-28 01:38:37,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5179, PETRI_PLACES=292, PETRI_TRANSITIONS=355} [2024-06-28 01:38:37,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 01:38:37,372 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 355 transitions, 5179 flow [2024-06-28 01:38:37,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:37,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:37,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:37,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:38:37,373 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:37,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:37,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1502285568, now seen corresponding path program 2 times [2024-06-28 01:38:37,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:37,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522789036] [2024-06-28 01:38:37,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:37,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:37,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:38,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:38,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522789036] [2024-06-28 01:38:38,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522789036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:38,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:38,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:38,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047312222] [2024-06-28 01:38:38,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:38,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:38,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:38,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:38,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:38,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 355 transitions, 5179 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:38,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:38,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:38,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:38,957 INFO L124 PetriNetUnfolderBase]: 1863/3195 cut-off events. [2024-06-28 01:38:38,957 INFO L125 PetriNetUnfolderBase]: For 73700/73700 co-relation queries the response was YES. [2024-06-28 01:38:38,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21281 conditions, 3195 events. 1863/3195 cut-off events. For 73700/73700 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19161 event pairs, 491 based on Foata normal form. 1/3150 useless extension candidates. Maximal degree in co-relation 21150. Up to 2779 conditions per place. [2024-06-28 01:38:38,986 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 328 selfloop transitions, 70 changer transitions 0/404 dead transitions. [2024-06-28 01:38:38,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 404 transitions, 6342 flow [2024-06-28 01:38:38,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:38,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:38:38,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:38:38,996 INFO L175 Difference]: Start difference. First operand has 292 places, 355 transitions, 5179 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:38:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 404 transitions, 6342 flow [2024-06-28 01:38:39,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 404 transitions, 6191 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:39,391 INFO L231 Difference]: Finished difference. Result has 295 places, 364 transitions, 5375 flow [2024-06-28 01:38:39,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5046, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5375, PETRI_PLACES=295, PETRI_TRANSITIONS=364} [2024-06-28 01:38:39,392 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 254 predicate places. [2024-06-28 01:38:39,392 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 364 transitions, 5375 flow [2024-06-28 01:38:39,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:39,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:39,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:38:39,392 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1414520290, now seen corresponding path program 2 times [2024-06-28 01:38:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:39,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442687107] [2024-06-28 01:38:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:39,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:39,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442687107] [2024-06-28 01:38:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442687107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295970171] [2024-06-28 01:38:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:39,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:39,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:39,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:39,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 364 transitions, 5375 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:39,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:39,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:40,812 INFO L124 PetriNetUnfolderBase]: 1895/3243 cut-off events. [2024-06-28 01:38:40,812 INFO L125 PetriNetUnfolderBase]: For 77451/77451 co-relation queries the response was YES. [2024-06-28 01:38:40,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 3243 events. 1895/3243 cut-off events. For 77451/77451 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19516 event pairs, 509 based on Foata normal form. 2/3199 useless extension candidates. Maximal degree in co-relation 21539. Up to 2841 conditions per place. [2024-06-28 01:38:40,846 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 341 selfloop transitions, 66 changer transitions 0/413 dead transitions. [2024-06-28 01:38:40,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 413 transitions, 6480 flow [2024-06-28 01:38:40,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:40,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:38:40,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:38:40,847 INFO L175 Difference]: Start difference. First operand has 295 places, 364 transitions, 5375 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:38:40,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 413 transitions, 6480 flow [2024-06-28 01:38:41,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 413 transitions, 6352 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:41,369 INFO L231 Difference]: Finished difference. Result has 299 places, 374 transitions, 5529 flow [2024-06-28 01:38:41,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5247, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5529, PETRI_PLACES=299, PETRI_TRANSITIONS=374} [2024-06-28 01:38:41,369 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 01:38:41,369 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 374 transitions, 5529 flow [2024-06-28 01:38:41,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:41,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:41,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:38:41,370 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:41,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:41,370 INFO L85 PathProgramCache]: Analyzing trace with hash 445979416, now seen corresponding path program 9 times [2024-06-28 01:38:41,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:41,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109543257] [2024-06-28 01:38:41,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:41,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:42,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:42,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109543257] [2024-06-28 01:38:42,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109543257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:42,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:42,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:42,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171967151] [2024-06-28 01:38:42,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:42,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:42,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:42,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:42,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:42,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:42,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 374 transitions, 5529 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:42,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:42,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:42,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:42,989 INFO L124 PetriNetUnfolderBase]: 1908/3266 cut-off events. [2024-06-28 01:38:42,990 INFO L125 PetriNetUnfolderBase]: For 80665/80665 co-relation queries the response was YES. [2024-06-28 01:38:43,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22053 conditions, 3266 events. 1908/3266 cut-off events. For 80665/80665 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 19612 event pairs, 429 based on Foata normal form. 2/3221 useless extension candidates. Maximal degree in co-relation 21919. Up to 2726 conditions per place. [2024-06-28 01:38:43,024 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 322 selfloop transitions, 83 changer transitions 0/411 dead transitions. [2024-06-28 01:38:43,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 411 transitions, 6534 flow [2024-06-28 01:38:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:43,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:43,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:38:43,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:38:43,041 INFO L175 Difference]: Start difference. First operand has 299 places, 374 transitions, 5529 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:38:43,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 411 transitions, 6534 flow [2024-06-28 01:38:43,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 411 transitions, 6414 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-06-28 01:38:43,479 INFO L231 Difference]: Finished difference. Result has 305 places, 375 transitions, 5606 flow [2024-06-28 01:38:43,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5409, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5606, PETRI_PLACES=305, PETRI_TRANSITIONS=375} [2024-06-28 01:38:43,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 01:38:43,479 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 375 transitions, 5606 flow [2024-06-28 01:38:43,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:43,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:43,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:43,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:38:43,480 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:43,480 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash -2101499576, now seen corresponding path program 3 times [2024-06-28 01:38:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604764579] [2024-06-28 01:38:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:43,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:44,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604764579] [2024-06-28 01:38:44,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604764579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:44,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:44,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:44,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381797359] [2024-06-28 01:38:44,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:44,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:44,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:44,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:44,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:44,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:44,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 375 transitions, 5606 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:44,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:44,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:44,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:44,909 INFO L124 PetriNetUnfolderBase]: 2038/3461 cut-off events. [2024-06-28 01:38:44,909 INFO L125 PetriNetUnfolderBase]: For 101048/101048 co-relation queries the response was YES. [2024-06-28 01:38:44,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24070 conditions, 3461 events. 2038/3461 cut-off events. For 101048/101048 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 20919 event pairs, 393 based on Foata normal form. 2/3416 useless extension candidates. Maximal degree in co-relation 23935. Up to 2483 conditions per place. [2024-06-28 01:38:44,944 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 314 selfloop transitions, 114 changer transitions 0/434 dead transitions. [2024-06-28 01:38:44,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 434 transitions, 7192 flow [2024-06-28 01:38:44,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:44,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:38:44,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:38:44,946 INFO L175 Difference]: Start difference. First operand has 305 places, 375 transitions, 5606 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:38:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 434 transitions, 7192 flow [2024-06-28 01:38:45,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 434 transitions, 6982 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:45,402 INFO L231 Difference]: Finished difference. Result has 309 places, 388 transitions, 5970 flow [2024-06-28 01:38:45,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5396, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5970, PETRI_PLACES=309, PETRI_TRANSITIONS=388} [2024-06-28 01:38:45,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 01:38:45,402 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 388 transitions, 5970 flow [2024-06-28 01:38:45,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:45,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:45,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:38:45,403 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:45,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2101268936, now seen corresponding path program 4 times [2024-06-28 01:38:45,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:45,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563849388] [2024-06-28 01:38:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:45,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:45,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:45,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563849388] [2024-06-28 01:38:45,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563849388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:45,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:45,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:45,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572088111] [2024-06-28 01:38:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:45,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:45,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:45,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:45,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 388 transitions, 5970 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:45,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:45,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:46,817 INFO L124 PetriNetUnfolderBase]: 2058/3491 cut-off events. [2024-06-28 01:38:46,817 INFO L125 PetriNetUnfolderBase]: For 105878/105878 co-relation queries the response was YES. [2024-06-28 01:38:46,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24889 conditions, 3491 events. 2058/3491 cut-off events. For 105878/105878 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21124 event pairs, 387 based on Foata normal form. 2/3446 useless extension candidates. Maximal degree in co-relation 24751. Up to 2490 conditions per place. [2024-06-28 01:38:46,856 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 307 selfloop transitions, 124 changer transitions 0/437 dead transitions. [2024-06-28 01:38:46,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 437 transitions, 7400 flow [2024-06-28 01:38:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:46,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:38:46,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:38:46,857 INFO L175 Difference]: Start difference. First operand has 309 places, 388 transitions, 5970 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:38:46,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 437 transitions, 7400 flow [2024-06-28 01:38:47,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 437 transitions, 7190 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:47,404 INFO L231 Difference]: Finished difference. Result has 313 places, 391 transitions, 6096 flow [2024-06-28 01:38:47,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5770, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6096, PETRI_PLACES=313, PETRI_TRANSITIONS=391} [2024-06-28 01:38:47,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:38:47,405 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 391 transitions, 6096 flow [2024-06-28 01:38:47,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:47,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:47,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:47,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:38:47,405 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:47,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:47,405 INFO L85 PathProgramCache]: Analyzing trace with hash -2101260256, now seen corresponding path program 1 times [2024-06-28 01:38:47,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:47,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901722144] [2024-06-28 01:38:47,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:47,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:48,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:48,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:48,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901722144] [2024-06-28 01:38:48,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901722144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:48,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:48,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:48,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655801417] [2024-06-28 01:38:48,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:48,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:48,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:48,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:48,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:48,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:48,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 391 transitions, 6096 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:48,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:48,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:48,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:49,015 INFO L124 PetriNetUnfolderBase]: 2054/3486 cut-off events. [2024-06-28 01:38:49,015 INFO L125 PetriNetUnfolderBase]: For 102278/102278 co-relation queries the response was YES. [2024-06-28 01:38:49,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24871 conditions, 3486 events. 2054/3486 cut-off events. For 102278/102278 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 21060 event pairs, 391 based on Foata normal form. 3/3442 useless extension candidates. Maximal degree in co-relation 24731. Up to 2510 conditions per place. [2024-06-28 01:38:49,052 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 297 selfloop transitions, 138 changer transitions 0/441 dead transitions. [2024-06-28 01:38:49,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 441 transitions, 7478 flow [2024-06-28 01:38:49,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:38:49,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:38:49,057 INFO L175 Difference]: Start difference. First operand has 313 places, 391 transitions, 6096 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:38:49,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 441 transitions, 7478 flow [2024-06-28 01:38:49,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 441 transitions, 7185 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:49,582 INFO L231 Difference]: Finished difference. Result has 317 places, 399 transitions, 6325 flow [2024-06-28 01:38:49,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5824, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6325, PETRI_PLACES=317, PETRI_TRANSITIONS=399} [2024-06-28 01:38:49,582 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 276 predicate places. [2024-06-28 01:38:49,582 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 399 transitions, 6325 flow [2024-06-28 01:38:49,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:49,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:49,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:49,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:38:49,583 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:49,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:49,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2101260566, now seen corresponding path program 5 times [2024-06-28 01:38:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:49,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92522273] [2024-06-28 01:38:49,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:49,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:49,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:50,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:50,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92522273] [2024-06-28 01:38:50,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92522273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:50,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:50,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:50,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252023488] [2024-06-28 01:38:50,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:50,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:50,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:50,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:50,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:50,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:50,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 399 transitions, 6325 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:50,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:50,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:50,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:51,042 INFO L124 PetriNetUnfolderBase]: 2046/3474 cut-off events. [2024-06-28 01:38:51,042 INFO L125 PetriNetUnfolderBase]: For 97937/97937 co-relation queries the response was YES. [2024-06-28 01:38:51,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24791 conditions, 3474 events. 2046/3474 cut-off events. For 97937/97937 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21008 event pairs, 388 based on Foata normal form. 4/3431 useless extension candidates. Maximal degree in co-relation 24649. Up to 2485 conditions per place. [2024-06-28 01:38:51,072 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 299 selfloop transitions, 136 changer transitions 0/441 dead transitions. [2024-06-28 01:38:51,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 441 transitions, 7525 flow [2024-06-28 01:38:51,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:51,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:38:51,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:38:51,074 INFO L175 Difference]: Start difference. First operand has 317 places, 399 transitions, 6325 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:38:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 441 transitions, 7525 flow [2024-06-28 01:38:51,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 441 transitions, 7141 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-28 01:38:51,611 INFO L231 Difference]: Finished difference. Result has 320 places, 399 transitions, 6225 flow [2024-06-28 01:38:51,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5941, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6225, PETRI_PLACES=320, PETRI_TRANSITIONS=399} [2024-06-28 01:38:51,612 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 01:38:51,612 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 399 transitions, 6225 flow [2024-06-28 01:38:51,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:51,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:51,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:51,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:38:51,613 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:51,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:51,613 INFO L85 PathProgramCache]: Analyzing trace with hash -910588468, now seen corresponding path program 10 times [2024-06-28 01:38:51,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:51,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037804555] [2024-06-28 01:38:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:52,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:52,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037804555] [2024-06-28 01:38:52,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037804555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:52,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:52,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:52,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037794500] [2024-06-28 01:38:52,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:52,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:52,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 399 transitions, 6225 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:52,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:52,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:52,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:53,419 INFO L124 PetriNetUnfolderBase]: 2059/3497 cut-off events. [2024-06-28 01:38:53,420 INFO L125 PetriNetUnfolderBase]: For 99787/99787 co-relation queries the response was YES. [2024-06-28 01:38:53,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24805 conditions, 3497 events. 2059/3497 cut-off events. For 99787/99787 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21084 event pairs, 472 based on Foata normal form. 2/3452 useless extension candidates. Maximal degree in co-relation 24662. Up to 2957 conditions per place. [2024-06-28 01:38:53,456 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 354 selfloop transitions, 76 changer transitions 0/436 dead transitions. [2024-06-28 01:38:53,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 436 transitions, 7282 flow [2024-06-28 01:38:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:53,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:53,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:38:53,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:38:53,457 INFO L175 Difference]: Start difference. First operand has 320 places, 399 transitions, 6225 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:38:53,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 436 transitions, 7282 flow [2024-06-28 01:38:54,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 436 transitions, 7028 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:54,033 INFO L231 Difference]: Finished difference. Result has 321 places, 400 transitions, 6156 flow [2024-06-28 01:38:54,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5971, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6156, PETRI_PLACES=321, PETRI_TRANSITIONS=400} [2024-06-28 01:38:54,033 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 01:38:54,033 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 400 transitions, 6156 flow [2024-06-28 01:38:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:54,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:54,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:38:54,034 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:54,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -910593118, now seen corresponding path program 11 times [2024-06-28 01:38:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190496554] [2024-06-28 01:38:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:54,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:54,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:54,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190496554] [2024-06-28 01:38:54,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190496554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:54,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:54,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:54,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537116275] [2024-06-28 01:38:54,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:54,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:54,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:54,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:54,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:54,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:54,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 400 transitions, 6156 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:54,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:54,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:54,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:55,709 INFO L124 PetriNetUnfolderBase]: 2072/3520 cut-off events. [2024-06-28 01:38:55,709 INFO L125 PetriNetUnfolderBase]: For 102183/102183 co-relation queries the response was YES. [2024-06-28 01:38:55,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24844 conditions, 3520 events. 2072/3520 cut-off events. For 102183/102183 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 21288 event pairs, 471 based on Foata normal form. 2/3475 useless extension candidates. Maximal degree in co-relation 24700. Up to 2921 conditions per place. [2024-06-28 01:38:55,746 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 353 selfloop transitions, 78 changer transitions 0/437 dead transitions. [2024-06-28 01:38:55,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 437 transitions, 7215 flow [2024-06-28 01:38:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:38:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:38:55,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:38:55,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:38:55,747 INFO L175 Difference]: Start difference. First operand has 321 places, 400 transitions, 6156 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:38:55,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 437 transitions, 7215 flow [2024-06-28 01:38:56,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 437 transitions, 7083 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:56,276 INFO L231 Difference]: Finished difference. Result has 324 places, 401 transitions, 6215 flow [2024-06-28 01:38:56,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6024, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6215, PETRI_PLACES=324, PETRI_TRANSITIONS=401} [2024-06-28 01:38:56,277 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 01:38:56,277 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 401 transitions, 6215 flow [2024-06-28 01:38:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:56,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:56,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:56,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:38:56,277 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:56,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:56,278 INFO L85 PathProgramCache]: Analyzing trace with hash -910408544, now seen corresponding path program 6 times [2024-06-28 01:38:56,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:56,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639863540] [2024-06-28 01:38:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:56,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639863540] [2024-06-28 01:38:56,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639863540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:56,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:56,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213956021] [2024-06-28 01:38:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:56,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:56,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:56,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:56,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 401 transitions, 6215 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:56,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:56,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:56,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:57,639 INFO L124 PetriNetUnfolderBase]: 2081/3533 cut-off events. [2024-06-28 01:38:57,639 INFO L125 PetriNetUnfolderBase]: For 101582/101582 co-relation queries the response was YES. [2024-06-28 01:38:57,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24924 conditions, 3533 events. 2081/3533 cut-off events. For 101582/101582 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 21370 event pairs, 489 based on Foata normal form. 2/3488 useless extension candidates. Maximal degree in co-relation 24779. Up to 2537 conditions per place. [2024-06-28 01:38:57,675 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 322 selfloop transitions, 118 changer transitions 0/446 dead transitions. [2024-06-28 01:38:57,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 446 transitions, 7507 flow [2024-06-28 01:38:57,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:57,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:38:57,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:38:57,676 INFO L175 Difference]: Start difference. First operand has 324 places, 401 transitions, 6215 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:38:57,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 446 transitions, 7507 flow [2024-06-28 01:38:58,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 446 transitions, 7369 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:38:58,214 INFO L231 Difference]: Finished difference. Result has 328 places, 404 transitions, 6397 flow [2024-06-28 01:38:58,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6077, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6397, PETRI_PLACES=328, PETRI_TRANSITIONS=404} [2024-06-28 01:38:58,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-28 01:38:58,215 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 404 transitions, 6397 flow [2024-06-28 01:38:58,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:58,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:58,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:58,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:38:58,215 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:58,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash -684468426, now seen corresponding path program 12 times [2024-06-28 01:38:58,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:58,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146592476] [2024-06-28 01:38:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:58,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:58,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:58,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:58,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146592476] [2024-06-28 01:38:58,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146592476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:58,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:58,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:38:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103875166] [2024-06-28 01:38:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:38:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:38:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:38:59,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:38:59,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 404 transitions, 6397 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:38:59,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:59,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:38:59,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:59,947 INFO L124 PetriNetUnfolderBase]: 2094/3558 cut-off events. [2024-06-28 01:38:59,947 INFO L125 PetriNetUnfolderBase]: For 104871/104871 co-relation queries the response was YES. [2024-06-28 01:38:59,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25249 conditions, 3558 events. 2094/3558 cut-off events. For 104871/104871 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 21656 event pairs, 471 based on Foata normal form. 2/3514 useless extension candidates. Maximal degree in co-relation 25103. Up to 2928 conditions per place. [2024-06-28 01:38:59,986 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 358 selfloop transitions, 71 changer transitions 0/435 dead transitions. [2024-06-28 01:38:59,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 435 transitions, 7410 flow [2024-06-28 01:38:59,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:38:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:38:59,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 01:38:59,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:38:59,987 INFO L175 Difference]: Start difference. First operand has 328 places, 404 transitions, 6397 flow. Second operand 9 states and 144 transitions. [2024-06-28 01:38:59,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 435 transitions, 7410 flow [2024-06-28 01:39:00,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 435 transitions, 7152 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:00,624 INFO L231 Difference]: Finished difference. Result has 328 places, 405 transitions, 6330 flow [2024-06-28 01:39:00,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6139, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6330, PETRI_PLACES=328, PETRI_TRANSITIONS=405} [2024-06-28 01:39:00,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-28 01:39:00,625 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 405 transitions, 6330 flow [2024-06-28 01:39:00,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:00,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:00,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:00,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:39:00,625 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:00,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:00,626 INFO L85 PathProgramCache]: Analyzing trace with hash -236992680, now seen corresponding path program 13 times [2024-06-28 01:39:00,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:00,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289760192] [2024-06-28 01:39:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:00,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:01,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:01,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289760192] [2024-06-28 01:39:01,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289760192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:01,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:01,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899053126] [2024-06-28 01:39:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:01,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:01,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:01,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:01,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:01,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 405 transitions, 6330 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:01,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:01,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:01,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:02,346 INFO L124 PetriNetUnfolderBase]: 2123/3612 cut-off events. [2024-06-28 01:39:02,346 INFO L125 PetriNetUnfolderBase]: For 113531/113531 co-relation queries the response was YES. [2024-06-28 01:39:02,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25738 conditions, 3612 events. 2123/3612 cut-off events. For 113531/113531 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22147 event pairs, 488 based on Foata normal form. 2/3568 useless extension candidates. Maximal degree in co-relation 25591. Up to 2845 conditions per place. [2024-06-28 01:39:02,379 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 353 selfloop transitions, 80 changer transitions 0/439 dead transitions. [2024-06-28 01:39:02,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 439 transitions, 7540 flow [2024-06-28 01:39:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:02,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:39:02,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:39:02,380 INFO L175 Difference]: Start difference. First operand has 328 places, 405 transitions, 6330 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:39:02,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 439 transitions, 7540 flow [2024-06-28 01:39:03,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 439 transitions, 7360 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:03,014 INFO L231 Difference]: Finished difference. Result has 330 places, 407 transitions, 6394 flow [2024-06-28 01:39:03,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6168, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6394, PETRI_PLACES=330, PETRI_TRANSITIONS=407} [2024-06-28 01:39:03,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-28 01:39:03,015 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 407 transitions, 6394 flow [2024-06-28 01:39:03,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:03,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:03,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:03,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:39:03,015 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:03,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:03,015 INFO L85 PathProgramCache]: Analyzing trace with hash -236987844, now seen corresponding path program 3 times [2024-06-28 01:39:03,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:03,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932514066] [2024-06-28 01:39:03,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:03,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:03,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932514066] [2024-06-28 01:39:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932514066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:03,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:03,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77205983] [2024-06-28 01:39:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:03,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:03,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:03,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:03,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:03,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 407 transitions, 6394 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:03,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:03,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:03,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:04,776 INFO L124 PetriNetUnfolderBase]: 2121/3615 cut-off events. [2024-06-28 01:39:04,776 INFO L125 PetriNetUnfolderBase]: For 102005/102005 co-relation queries the response was YES. [2024-06-28 01:39:04,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25568 conditions, 3615 events. 2121/3615 cut-off events. For 102005/102005 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22178 event pairs, 489 based on Foata normal form. 1/3570 useless extension candidates. Maximal degree in co-relation 25420. Up to 2992 conditions per place. [2024-06-28 01:39:04,819 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 102 changer transitions 0/442 dead transitions. [2024-06-28 01:39:04,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 442 transitions, 7494 flow [2024-06-28 01:39:04,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:04,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:39:04,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:39:04,820 INFO L175 Difference]: Start difference. First operand has 330 places, 407 transitions, 6394 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:39:04,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 442 transitions, 7494 flow [2024-06-28 01:39:05,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 442 transitions, 7342 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:05,553 INFO L231 Difference]: Finished difference. Result has 334 places, 411 transitions, 6578 flow [2024-06-28 01:39:05,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6252, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6578, PETRI_PLACES=334, PETRI_TRANSITIONS=411} [2024-06-28 01:39:05,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-28 01:39:05,554 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 411 transitions, 6578 flow [2024-06-28 01:39:05,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:05,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:05,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:05,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:39:05,555 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:05,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:05,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2092987050, now seen corresponding path program 14 times [2024-06-28 01:39:05,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:05,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248043101] [2024-06-28 01:39:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:05,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:06,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:06,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248043101] [2024-06-28 01:39:06,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248043101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:06,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:06,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:06,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707236223] [2024-06-28 01:39:06,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:06,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:06,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:06,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:06,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:06,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:06,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 411 transitions, 6578 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:06,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:06,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:06,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:07,359 INFO L124 PetriNetUnfolderBase]: 2118/3606 cut-off events. [2024-06-28 01:39:07,359 INFO L125 PetriNetUnfolderBase]: For 100368/100368 co-relation queries the response was YES. [2024-06-28 01:39:07,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25679 conditions, 3606 events. 2118/3606 cut-off events. For 100368/100368 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 22080 event pairs, 495 based on Foata normal form. 2/3562 useless extension candidates. Maximal degree in co-relation 25529. Up to 3005 conditions per place. [2024-06-28 01:39:07,400 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 355 selfloop transitions, 81 changer transitions 0/442 dead transitions. [2024-06-28 01:39:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 442 transitions, 7590 flow [2024-06-28 01:39:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:07,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:39:07,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 01:39:07,402 INFO L175 Difference]: Start difference. First operand has 334 places, 411 transitions, 6578 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:39:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 442 transitions, 7590 flow [2024-06-28 01:39:08,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 442 transitions, 7413 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:08,071 INFO L231 Difference]: Finished difference. Result has 337 places, 411 transitions, 6580 flow [2024-06-28 01:39:08,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6401, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6580, PETRI_PLACES=337, PETRI_TRANSITIONS=411} [2024-06-28 01:39:08,071 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 01:39:08,072 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 411 transitions, 6580 flow [2024-06-28 01:39:08,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:08,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:08,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:08,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:39:08,072 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:08,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:08,072 INFO L85 PathProgramCache]: Analyzing trace with hash -2114214782, now seen corresponding path program 7 times [2024-06-28 01:39:08,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:08,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298323550] [2024-06-28 01:39:08,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:08,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:08,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298323550] [2024-06-28 01:39:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298323550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:08,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560452332] [2024-06-28 01:39:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:08,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:08,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 411 transitions, 6580 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:08,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:08,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:08,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:09,575 INFO L124 PetriNetUnfolderBase]: 2138/3633 cut-off events. [2024-06-28 01:39:09,575 INFO L125 PetriNetUnfolderBase]: For 97424/97424 co-relation queries the response was YES. [2024-06-28 01:39:09,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25928 conditions, 3633 events. 2138/3633 cut-off events. For 97424/97424 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22277 event pairs, 431 based on Foata normal form. 2/3589 useless extension candidates. Maximal degree in co-relation 25777. Up to 3054 conditions per place. [2024-06-28 01:39:09,617 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 357 selfloop transitions, 87 changer transitions 0/450 dead transitions. [2024-06-28 01:39:09,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 450 transitions, 7720 flow [2024-06-28 01:39:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:09,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:39:09,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:39:09,625 INFO L175 Difference]: Start difference. First operand has 337 places, 411 transitions, 6580 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:39:09,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 450 transitions, 7720 flow [2024-06-28 01:39:10,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 450 transitions, 7566 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:10,180 INFO L231 Difference]: Finished difference. Result has 339 places, 414 transitions, 6706 flow [2024-06-28 01:39:10,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6426, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6706, PETRI_PLACES=339, PETRI_TRANSITIONS=414} [2024-06-28 01:39:10,180 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 01:39:10,180 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 414 transitions, 6706 flow [2024-06-28 01:39:10,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:10,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:10,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:10,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:39:10,181 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:10,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1487337194, now seen corresponding path program 15 times [2024-06-28 01:39:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899907614] [2024-06-28 01:39:10,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:10,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:10,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:10,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899907614] [2024-06-28 01:39:10,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899907614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:10,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:10,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195275705] [2024-06-28 01:39:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:10,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:10,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:10,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:10,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:10,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:10,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 414 transitions, 6706 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:10,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:10,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:10,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:11,871 INFO L124 PetriNetUnfolderBase]: 2151/3652 cut-off events. [2024-06-28 01:39:11,871 INFO L125 PetriNetUnfolderBase]: For 102129/102129 co-relation queries the response was YES. [2024-06-28 01:39:11,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26272 conditions, 3652 events. 2151/3652 cut-off events. For 102129/102129 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 22328 event pairs, 386 based on Foata normal form. 2/3607 useless extension candidates. Maximal degree in co-relation 26121. Up to 2950 conditions per place. [2024-06-28 01:39:11,915 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 351 selfloop transitions, 89 changer transitions 0/446 dead transitions. [2024-06-28 01:39:11,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 446 transitions, 7763 flow [2024-06-28 01:39:11,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:11,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:39:11,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:39:11,917 INFO L175 Difference]: Start difference. First operand has 339 places, 414 transitions, 6706 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:39:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 446 transitions, 7763 flow [2024-06-28 01:39:12,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 446 transitions, 7547 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:12,597 INFO L231 Difference]: Finished difference. Result has 340 places, 415 transitions, 6703 flow [2024-06-28 01:39:12,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6490, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6703, PETRI_PLACES=340, PETRI_TRANSITIONS=415} [2024-06-28 01:39:12,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 01:39:12,597 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 415 transitions, 6703 flow [2024-06-28 01:39:12,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:12,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:12,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:12,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:39:12,598 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:12,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1487332544, now seen corresponding path program 16 times [2024-06-28 01:39:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024334779] [2024-06-28 01:39:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:12,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:13,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:13,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:13,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024334779] [2024-06-28 01:39:13,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024334779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:13,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:13,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:13,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152403816] [2024-06-28 01:39:13,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:13,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:13,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:13,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:13,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:13,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:13,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 415 transitions, 6703 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:13,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:13,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:13,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:14,272 INFO L124 PetriNetUnfolderBase]: 2180/3703 cut-off events. [2024-06-28 01:39:14,272 INFO L125 PetriNetUnfolderBase]: For 110554/110554 co-relation queries the response was YES. [2024-06-28 01:39:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26817 conditions, 3703 events. 2180/3703 cut-off events. For 110554/110554 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 22766 event pairs, 383 based on Foata normal form. 2/3658 useless extension candidates. Maximal degree in co-relation 26665. Up to 2880 conditions per place. [2024-06-28 01:39:14,309 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 350 selfloop transitions, 93 changer transitions 0/449 dead transitions. [2024-06-28 01:39:14,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 449 transitions, 7931 flow [2024-06-28 01:39:14,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:39:14,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:39:14,310 INFO L175 Difference]: Start difference. First operand has 340 places, 415 transitions, 6703 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:39:14,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 449 transitions, 7931 flow [2024-06-28 01:39:14,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 449 transitions, 7725 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:14,930 INFO L231 Difference]: Finished difference. Result has 342 places, 417 transitions, 6751 flow [2024-06-28 01:39:14,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6503, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6751, PETRI_PLACES=342, PETRI_TRANSITIONS=417} [2024-06-28 01:39:14,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:39:14,931 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 417 transitions, 6751 flow [2024-06-28 01:39:14,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:14,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:14,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:39:14,931 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:14,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1644956560, now seen corresponding path program 8 times [2024-06-28 01:39:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644104949] [2024-06-28 01:39:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:15,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644104949] [2024-06-28 01:39:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644104949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:15,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:15,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512384458] [2024-06-28 01:39:15,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:15,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:15,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:15,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:15,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 417 transitions, 6751 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:15,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:15,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:15,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:16,447 INFO L124 PetriNetUnfolderBase]: 2300/3883 cut-off events. [2024-06-28 01:39:16,447 INFO L125 PetriNetUnfolderBase]: For 132413/132413 co-relation queries the response was YES. [2024-06-28 01:39:16,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28817 conditions, 3883 events. 2300/3883 cut-off events. For 132413/132413 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23927 event pairs, 462 based on Foata normal form. 2/3838 useless extension candidates. Maximal degree in co-relation 28664. Up to 2436 conditions per place. [2024-06-28 01:39:16,493 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 309 selfloop transitions, 154 changer transitions 0/469 dead transitions. [2024-06-28 01:39:16,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 469 transitions, 8451 flow [2024-06-28 01:39:16,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:16,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:39:16,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:39:16,494 INFO L175 Difference]: Start difference. First operand has 342 places, 417 transitions, 6751 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:39:16,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 469 transitions, 8451 flow [2024-06-28 01:39:17,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 469 transitions, 8307 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:17,226 INFO L231 Difference]: Finished difference. Result has 349 places, 429 transitions, 7379 flow [2024-06-28 01:39:17,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6607, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7379, PETRI_PLACES=349, PETRI_TRANSITIONS=429} [2024-06-28 01:39:17,226 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 01:39:17,226 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 429 transitions, 7379 flow [2024-06-28 01:39:17,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:17,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:17,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:17,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:39:17,227 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:17,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1493766284, now seen corresponding path program 17 times [2024-06-28 01:39:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:17,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305018677] [2024-06-28 01:39:17,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:18,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:18,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305018677] [2024-06-28 01:39:18,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305018677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:18,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:18,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716506550] [2024-06-28 01:39:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:18,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:18,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:18,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:18,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:18,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 429 transitions, 7379 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:18,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:18,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:18,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:19,064 INFO L124 PetriNetUnfolderBase]: 2297/3878 cut-off events. [2024-06-28 01:39:19,064 INFO L125 PetriNetUnfolderBase]: For 132156/132156 co-relation queries the response was YES. [2024-06-28 01:39:19,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29852 conditions, 3878 events. 2297/3878 cut-off events. For 132156/132156 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23885 event pairs, 396 based on Foata normal form. 2/3833 useless extension candidates. Maximal degree in co-relation 29695. Up to 3176 conditions per place. [2024-06-28 01:39:19,113 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 356 selfloop transitions, 98 changer transitions 0/460 dead transitions. [2024-06-28 01:39:19,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 460 transitions, 8437 flow [2024-06-28 01:39:19,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:19,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:39:19,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:39:19,114 INFO L175 Difference]: Start difference. First operand has 349 places, 429 transitions, 7379 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:39:19,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 460 transitions, 8437 flow [2024-06-28 01:39:19,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 460 transitions, 8276 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:19,979 INFO L231 Difference]: Finished difference. Result has 353 places, 429 transitions, 7420 flow [2024-06-28 01:39:19,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7420, PETRI_PLACES=353, PETRI_TRANSITIONS=429} [2024-06-28 01:39:19,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-28 01:39:19,980 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 429 transitions, 7420 flow [2024-06-28 01:39:19,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:19,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:19,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:19,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:39:19,980 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:19,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:19,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1648586894, now seen corresponding path program 9 times [2024-06-28 01:39:19,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:19,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880051875] [2024-06-28 01:39:19,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:19,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:20,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:20,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880051875] [2024-06-28 01:39:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880051875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:20,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:20,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:20,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347745291] [2024-06-28 01:39:20,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:20,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:20,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:20,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:20,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:20,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:20,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 429 transitions, 7420 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:20,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:20,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:20,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:21,558 INFO L124 PetriNetUnfolderBase]: 2317/3908 cut-off events. [2024-06-28 01:39:21,558 INFO L125 PetriNetUnfolderBase]: For 130846/130846 co-relation queries the response was YES. [2024-06-28 01:39:21,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30153 conditions, 3908 events. 2317/3908 cut-off events. For 130846/130846 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24193 event pairs, 346 based on Foata normal form. 2/3863 useless extension candidates. Maximal degree in co-relation 29994. Up to 2438 conditions per place. [2024-06-28 01:39:21,601 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 302 selfloop transitions, 164 changer transitions 0/472 dead transitions. [2024-06-28 01:39:21,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 472 transitions, 8939 flow [2024-06-28 01:39:21,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:21,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:21,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:39:21,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:39:21,603 INFO L175 Difference]: Start difference. First operand has 353 places, 429 transitions, 7420 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:39:21,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 472 transitions, 8939 flow [2024-06-28 01:39:22,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 472 transitions, 8733 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:22,463 INFO L231 Difference]: Finished difference. Result has 355 places, 432 transitions, 7644 flow [2024-06-28 01:39:22,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7214, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7644, PETRI_PLACES=355, PETRI_TRANSITIONS=432} [2024-06-28 01:39:22,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-28 01:39:22,463 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 432 transitions, 7644 flow [2024-06-28 01:39:22,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:22,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:22,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:22,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:39:22,464 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:22,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:22,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1494003868, now seen corresponding path program 10 times [2024-06-28 01:39:22,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:22,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359141059] [2024-06-28 01:39:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:22,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:22,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:22,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:22,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359141059] [2024-06-28 01:39:22,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359141059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:22,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:22,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:22,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199853911] [2024-06-28 01:39:22,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:22,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:22,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:22,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:23,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:23,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 432 transitions, 7644 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:23,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:23,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:23,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:24,084 INFO L124 PetriNetUnfolderBase]: 2337/3938 cut-off events. [2024-06-28 01:39:24,085 INFO L125 PetriNetUnfolderBase]: For 136539/136539 co-relation queries the response was YES. [2024-06-28 01:39:24,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30792 conditions, 3938 events. 2337/3938 cut-off events. For 136539/136539 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 24370 event pairs, 336 based on Foata normal form. 2/3893 useless extension candidates. Maximal degree in co-relation 30632. Up to 2445 conditions per place. [2024-06-28 01:39:24,134 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 293 selfloop transitions, 176 changer transitions 0/475 dead transitions. [2024-06-28 01:39:24,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 475 transitions, 9179 flow [2024-06-28 01:39:24,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:24,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:39:24,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:39:24,135 INFO L175 Difference]: Start difference. First operand has 355 places, 432 transitions, 7644 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:39:24,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 475 transitions, 9179 flow [2024-06-28 01:39:24,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 475 transitions, 8802 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:24,978 INFO L231 Difference]: Finished difference. Result has 357 places, 435 transitions, 7727 flow [2024-06-28 01:39:24,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7276, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7727, PETRI_PLACES=357, PETRI_TRANSITIONS=435} [2024-06-28 01:39:24,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 01:39:24,979 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 435 transitions, 7727 flow [2024-06-28 01:39:24,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:24,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:24,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:24,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:39:24,980 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:24,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:24,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1154110620, now seen corresponding path program 11 times [2024-06-28 01:39:24,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:24,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410018801] [2024-06-28 01:39:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:24,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:25,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410018801] [2024-06-28 01:39:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410018801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:25,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717050853] [2024-06-28 01:39:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:25,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:25,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:25,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:25,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:25,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 435 transitions, 7727 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:25,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:25,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:26,546 INFO L124 PetriNetUnfolderBase]: 2331/3930 cut-off events. [2024-06-28 01:39:26,546 INFO L125 PetriNetUnfolderBase]: For 132276/132276 co-relation queries the response was YES. [2024-06-28 01:39:26,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30404 conditions, 3930 events. 2331/3930 cut-off events. For 132276/132276 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 24335 event pairs, 334 based on Foata normal form. 4/3887 useless extension candidates. Maximal degree in co-relation 30244. Up to 2444 conditions per place. [2024-06-28 01:39:26,591 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 281 selfloop transitions, 187 changer transitions 0/474 dead transitions. [2024-06-28 01:39:26,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 474 transitions, 9022 flow [2024-06-28 01:39:26,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:26,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:39:26,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:39:26,592 INFO L175 Difference]: Start difference. First operand has 357 places, 435 transitions, 7727 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:39:26,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 474 transitions, 9022 flow [2024-06-28 01:39:27,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 474 transitions, 8608 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:27,420 INFO L231 Difference]: Finished difference. Result has 359 places, 435 transitions, 7707 flow [2024-06-28 01:39:27,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7315, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7707, PETRI_PLACES=359, PETRI_TRANSITIONS=435} [2024-06-28 01:39:27,420 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-28 01:39:27,420 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 435 transitions, 7707 flow [2024-06-28 01:39:27,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:27,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:27,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:27,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:39:27,421 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:27,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:27,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1648826214, now seen corresponding path program 2 times [2024-06-28 01:39:27,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:27,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329732397] [2024-06-28 01:39:27,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:27,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329732397] [2024-06-28 01:39:28,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329732397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:28,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:28,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:28,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880889357] [2024-06-28 01:39:28,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:28,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:28,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:28,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 435 transitions, 7707 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:28,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:28,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:28,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:29,192 INFO L124 PetriNetUnfolderBase]: 2324/3919 cut-off events. [2024-06-28 01:39:29,192 INFO L125 PetriNetUnfolderBase]: For 119801/119801 co-relation queries the response was YES. [2024-06-28 01:39:29,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29997 conditions, 3919 events. 2324/3919 cut-off events. For 119801/119801 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 24234 event pairs, 336 based on Foata normal form. 3/3875 useless extension candidates. Maximal degree in co-relation 29837. Up to 2475 conditions per place. [2024-06-28 01:39:29,238 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 277 selfloop transitions, 196 changer transitions 0/479 dead transitions. [2024-06-28 01:39:29,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 479 transitions, 9135 flow [2024-06-28 01:39:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:39:29,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:39:29,240 INFO L175 Difference]: Start difference. First operand has 359 places, 435 transitions, 7707 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:39:29,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 479 transitions, 9135 flow [2024-06-28 01:39:30,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 479 transitions, 8761 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:39:30,019 INFO L231 Difference]: Finished difference. Result has 361 places, 442 transitions, 7987 flow [2024-06-28 01:39:30,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7354, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7987, PETRI_PLACES=361, PETRI_TRANSITIONS=442} [2024-06-28 01:39:30,019 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 01:39:30,020 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 442 transitions, 7987 flow [2024-06-28 01:39:30,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:30,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:30,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:30,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:39:30,020 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:30,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1265180046, now seen corresponding path program 12 times [2024-06-28 01:39:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706631027] [2024-06-28 01:39:30,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:30,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:30,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:30,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706631027] [2024-06-28 01:39:30,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706631027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:30,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:30,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:30,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155417665] [2024-06-28 01:39:30,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:30,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:30,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:30,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:30,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:30,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:30,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 442 transitions, 7987 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:30,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:30,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:30,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:31,647 INFO L124 PetriNetUnfolderBase]: 2490/4169 cut-off events. [2024-06-28 01:39:31,647 INFO L125 PetriNetUnfolderBase]: For 156455/156455 co-relation queries the response was YES. [2024-06-28 01:39:31,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33363 conditions, 4169 events. 2490/4169 cut-off events. For 156455/156455 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 25893 event pairs, 275 based on Foata normal form. 4/4123 useless extension candidates. Maximal degree in co-relation 33202. Up to 2021 conditions per place. [2024-06-28 01:39:31,698 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 282 selfloop transitions, 220 changer transitions 0/508 dead transitions. [2024-06-28 01:39:31,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 508 transitions, 10149 flow [2024-06-28 01:39:31,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:31,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:31,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:39:31,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-28 01:39:31,699 INFO L175 Difference]: Start difference. First operand has 361 places, 442 transitions, 7987 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:39:31,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 508 transitions, 10149 flow [2024-06-28 01:39:32,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 508 transitions, 9787 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:32,853 INFO L231 Difference]: Finished difference. Result has 365 places, 457 transitions, 8441 flow [2024-06-28 01:39:32,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7625, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8441, PETRI_PLACES=365, PETRI_TRANSITIONS=457} [2024-06-28 01:39:32,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 01:39:32,854 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 457 transitions, 8441 flow [2024-06-28 01:39:32,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:32,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:32,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:32,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:39:32,854 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:32,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:32,855 INFO L85 PathProgramCache]: Analyzing trace with hash 990749832, now seen corresponding path program 3 times [2024-06-28 01:39:32,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:32,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100548252] [2024-06-28 01:39:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:32,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:33,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:33,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100548252] [2024-06-28 01:39:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100548252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:33,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913585588] [2024-06-28 01:39:33,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:33,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:33,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:33,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 457 transitions, 8441 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:33,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:33,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:33,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:34,663 INFO L124 PetriNetUnfolderBase]: 2484/4160 cut-off events. [2024-06-28 01:39:34,663 INFO L125 PetriNetUnfolderBase]: For 151671/151671 co-relation queries the response was YES. [2024-06-28 01:39:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33581 conditions, 4160 events. 2484/4160 cut-off events. For 151671/151671 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 25798 event pairs, 262 based on Foata normal form. 3/4113 useless extension candidates. Maximal degree in co-relation 33418. Up to 2360 conditions per place. [2024-06-28 01:39:34,711 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 282 selfloop transitions, 229 changer transitions 0/517 dead transitions. [2024-06-28 01:39:34,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 517 transitions, 10602 flow [2024-06-28 01:39:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:34,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-28 01:39:34,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4810810810810811 [2024-06-28 01:39:34,712 INFO L175 Difference]: Start difference. First operand has 365 places, 457 transitions, 8441 flow. Second operand 10 states and 178 transitions. [2024-06-28 01:39:34,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 517 transitions, 10602 flow [2024-06-28 01:39:35,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 517 transitions, 10173 flow, removed 141 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:35,794 INFO L231 Difference]: Finished difference. Result has 374 places, 473 transitions, 9084 flow [2024-06-28 01:39:35,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8132, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9084, PETRI_PLACES=374, PETRI_TRANSITIONS=473} [2024-06-28 01:39:35,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-28 01:39:35,795 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 473 transitions, 9084 flow [2024-06-28 01:39:35,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:35,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:35,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:35,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:39:35,796 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:35,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:35,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1275299686, now seen corresponding path program 4 times [2024-06-28 01:39:35,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:35,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890943353] [2024-06-28 01:39:35,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:35,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:36,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890943353] [2024-06-28 01:39:36,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890943353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:36,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:36,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093049701] [2024-06-28 01:39:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:36,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:36,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:36,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:36,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 473 transitions, 9084 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:36,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:36,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:36,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:37,813 INFO L124 PetriNetUnfolderBase]: 2516/4218 cut-off events. [2024-06-28 01:39:37,813 INFO L125 PetriNetUnfolderBase]: For 163205/163205 co-relation queries the response was YES. [2024-06-28 01:39:37,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34792 conditions, 4218 events. 2516/4218 cut-off events. For 163205/163205 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 26196 event pairs, 866 based on Foata normal form. 3/4174 useless extension candidates. Maximal degree in co-relation 34624. Up to 3936 conditions per place. [2024-06-28 01:39:37,870 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 472 selfloop transitions, 33 changer transitions 0/511 dead transitions. [2024-06-28 01:39:37,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 511 transitions, 10547 flow [2024-06-28 01:39:37,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:37,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:37,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 01:39:37,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:39:37,871 INFO L175 Difference]: Start difference. First operand has 374 places, 473 transitions, 9084 flow. Second operand 10 states and 160 transitions. [2024-06-28 01:39:37,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 511 transitions, 10547 flow [2024-06-28 01:39:39,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 511 transitions, 10322 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 01:39:39,019 INFO L231 Difference]: Finished difference. Result has 380 places, 477 transitions, 9037 flow [2024-06-28 01:39:39,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8859, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9037, PETRI_PLACES=380, PETRI_TRANSITIONS=477} [2024-06-28 01:39:39,020 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 339 predicate places. [2024-06-28 01:39:39,020 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 477 transitions, 9037 flow [2024-06-28 01:39:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:39,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:39,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:39:39,020 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:39,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1265171676, now seen corresponding path program 13 times [2024-06-28 01:39:39,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:39,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877728420] [2024-06-28 01:39:39,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:39,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:39,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:39,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877728420] [2024-06-28 01:39:39,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877728420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:39,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:39,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:39,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016604315] [2024-06-28 01:39:39,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:39,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:39,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:39,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:39,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:39,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:39,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 477 transitions, 9037 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:39,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:39,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:39,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:40,749 INFO L124 PetriNetUnfolderBase]: 2510/4199 cut-off events. [2024-06-28 01:39:40,750 INFO L125 PetriNetUnfolderBase]: For 145431/145431 co-relation queries the response was YES. [2024-06-28 01:39:40,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34374 conditions, 4199 events. 2510/4199 cut-off events. For 145431/145431 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 26068 event pairs, 262 based on Foata normal form. 2/4151 useless extension candidates. Maximal degree in co-relation 34204. Up to 2039 conditions per place. [2024-06-28 01:39:40,799 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 280 selfloop transitions, 241 changer transitions 0/527 dead transitions. [2024-06-28 01:39:40,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 527 transitions, 10969 flow [2024-06-28 01:39:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:40,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:39:40,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:39:40,800 INFO L175 Difference]: Start difference. First operand has 380 places, 477 transitions, 9037 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:39:40,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 527 transitions, 10969 flow [2024-06-28 01:39:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 527 transitions, 10712 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-28 01:39:42,010 INFO L231 Difference]: Finished difference. Result has 384 places, 485 transitions, 9530 flow [2024-06-28 01:39:42,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8821, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9530, PETRI_PLACES=384, PETRI_TRANSITIONS=485} [2024-06-28 01:39:42,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-28 01:39:42,011 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 485 transitions, 9530 flow [2024-06-28 01:39:42,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:42,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:42,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:42,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:39:42,011 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:42,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:42,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1618253004, now seen corresponding path program 18 times [2024-06-28 01:39:42,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:42,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541455377] [2024-06-28 01:39:42,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:42,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:42,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541455377] [2024-06-28 01:39:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541455377] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402979609] [2024-06-28 01:39:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:42,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:42,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 485 transitions, 9530 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:42,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:42,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:42,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:44,009 INFO L124 PetriNetUnfolderBase]: 2523/4222 cut-off events. [2024-06-28 01:39:44,009 INFO L125 PetriNetUnfolderBase]: For 153337/153337 co-relation queries the response was YES. [2024-06-28 01:39:44,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35443 conditions, 4222 events. 2523/4222 cut-off events. For 153337/153337 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 26232 event pairs, 330 based on Foata normal form. 2/4174 useless extension candidates. Maximal degree in co-relation 35270. Up to 3409 conditions per place. [2024-06-28 01:39:44,051 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 416 selfloop transitions, 95 changer transitions 0/517 dead transitions. [2024-06-28 01:39:44,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 517 transitions, 10741 flow [2024-06-28 01:39:44,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:44,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:39:44,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:39:44,054 INFO L175 Difference]: Start difference. First operand has 384 places, 485 transitions, 9530 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:39:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 517 transitions, 10741 flow [2024-06-28 01:39:45,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 517 transitions, 10295 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:39:45,147 INFO L231 Difference]: Finished difference. Result has 387 places, 486 transitions, 9309 flow [2024-06-28 01:39:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9084, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9309, PETRI_PLACES=387, PETRI_TRANSITIONS=486} [2024-06-28 01:39:45,148 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 346 predicate places. [2024-06-28 01:39:45,148 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 486 transitions, 9309 flow [2024-06-28 01:39:45,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:45,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:45,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:45,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:39:45,148 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:45,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 979834222, now seen corresponding path program 19 times [2024-06-28 01:39:45,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:45,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122556782] [2024-06-28 01:39:45,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:45,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:45,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:45,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:45,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122556782] [2024-06-28 01:39:45,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122556782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:45,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:45,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:45,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022883067] [2024-06-28 01:39:45,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:45,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:45,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:45,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:45,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 486 transitions, 9309 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:45,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:45,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:45,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:47,007 INFO L124 PetriNetUnfolderBase]: 2536/4245 cut-off events. [2024-06-28 01:39:47,007 INFO L125 PetriNetUnfolderBase]: For 152924/152924 co-relation queries the response was YES. [2024-06-28 01:39:47,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35055 conditions, 4245 events. 2536/4245 cut-off events. For 152924/152924 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26492 event pairs, 281 based on Foata normal form. 2/4197 useless extension candidates. Maximal degree in co-relation 34881. Up to 3432 conditions per place. [2024-06-28 01:39:47,063 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 400 selfloop transitions, 111 changer transitions 0/517 dead transitions. [2024-06-28 01:39:47,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 517 transitions, 10518 flow [2024-06-28 01:39:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:39:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:39:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:39:47,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:39:47,064 INFO L175 Difference]: Start difference. First operand has 387 places, 486 transitions, 9309 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:39:47,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 517 transitions, 10518 flow [2024-06-28 01:39:48,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 517 transitions, 10304 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:48,264 INFO L231 Difference]: Finished difference. Result has 389 places, 487 transitions, 9354 flow [2024-06-28 01:39:48,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9095, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9354, PETRI_PLACES=389, PETRI_TRANSITIONS=487} [2024-06-28 01:39:48,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-28 01:39:48,265 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 487 transitions, 9354 flow [2024-06-28 01:39:48,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:48,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:48,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:48,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:39:48,265 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:48,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash 979841166, now seen corresponding path program 14 times [2024-06-28 01:39:48,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:48,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784747274] [2024-06-28 01:39:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:48,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:48,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:48,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:48,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784747274] [2024-06-28 01:39:48,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784747274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:48,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:48,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:48,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628792085] [2024-06-28 01:39:48,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:48,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:48,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:48,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:48,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:48,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:48,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 487 transitions, 9354 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:48,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:48,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:48,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:50,064 INFO L124 PetriNetUnfolderBase]: 2642/4404 cut-off events. [2024-06-28 01:39:50,065 INFO L125 PetriNetUnfolderBase]: For 179403/179403 co-relation queries the response was YES. [2024-06-28 01:39:50,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37097 conditions, 4404 events. 2642/4404 cut-off events. For 179403/179403 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27548 event pairs, 300 based on Foata normal form. 2/4356 useless extension candidates. Maximal degree in co-relation 36922. Up to 2148 conditions per place. [2024-06-28 01:39:50,124 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 302 selfloop transitions, 236 changer transitions 0/544 dead transitions. [2024-06-28 01:39:50,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 544 transitions, 11584 flow [2024-06-28 01:39:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:50,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:50,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:39:50,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:39:50,125 INFO L175 Difference]: Start difference. First operand has 389 places, 487 transitions, 9354 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:39:50,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 544 transitions, 11584 flow [2024-06-28 01:39:51,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 544 transitions, 11336 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:51,370 INFO L231 Difference]: Finished difference. Result has 394 places, 502 transitions, 10093 flow [2024-06-28 01:39:51,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9106, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10093, PETRI_PLACES=394, PETRI_TRANSITIONS=502} [2024-06-28 01:39:51,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 01:39:51,371 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 502 transitions, 10093 flow [2024-06-28 01:39:51,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:51,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:51,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:51,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:39:51,371 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:51,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:51,372 INFO L85 PathProgramCache]: Analyzing trace with hash 980071806, now seen corresponding path program 15 times [2024-06-28 01:39:51,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:51,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775531130] [2024-06-28 01:39:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:51,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:51,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:51,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775531130] [2024-06-28 01:39:51,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775531130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:51,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:51,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677722800] [2024-06-28 01:39:51,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:51,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:51,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:51,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:51,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 502 transitions, 10093 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:51,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:51,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:51,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:53,187 INFO L124 PetriNetUnfolderBase]: 2662/4434 cut-off events. [2024-06-28 01:39:53,188 INFO L125 PetriNetUnfolderBase]: For 189498/189498 co-relation queries the response was YES. [2024-06-28 01:39:53,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38312 conditions, 4434 events. 2662/4434 cut-off events. For 189498/189498 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 27740 event pairs, 316 based on Foata normal form. 2/4386 useless extension candidates. Maximal degree in co-relation 38134. Up to 2155 conditions per place. [2024-06-28 01:39:53,247 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 315 selfloop transitions, 227 changer transitions 0/548 dead transitions. [2024-06-28 01:39:53,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 548 transitions, 12192 flow [2024-06-28 01:39:53,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:53,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:53,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:39:53,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:39:53,248 INFO L175 Difference]: Start difference. First operand has 394 places, 502 transitions, 10093 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:39:53,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 548 transitions, 12192 flow [2024-06-28 01:39:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 548 transitions, 11794 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-28 01:39:54,527 INFO L231 Difference]: Finished difference. Result has 399 places, 505 transitions, 10264 flow [2024-06-28 01:39:54,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9715, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10264, PETRI_PLACES=399, PETRI_TRANSITIONS=505} [2024-06-28 01:39:54,528 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 01:39:54,528 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 505 transitions, 10264 flow [2024-06-28 01:39:54,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:54,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:54,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:39:54,528 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:54,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1840144308, now seen corresponding path program 5 times [2024-06-28 01:39:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:54,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493018625] [2024-06-28 01:39:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:55,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:55,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493018625] [2024-06-28 01:39:55,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493018625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:55,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:55,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:55,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830026872] [2024-06-28 01:39:55,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:55,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:55,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:55,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:55,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 505 transitions, 10264 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:55,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:55,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:55,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:56,563 INFO L124 PetriNetUnfolderBase]: 2658/4429 cut-off events. [2024-06-28 01:39:56,564 INFO L125 PetriNetUnfolderBase]: For 184858/184858 co-relation queries the response was YES. [2024-06-28 01:39:56,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37834 conditions, 4429 events. 2658/4429 cut-off events. For 184858/184858 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27728 event pairs, 300 based on Foata normal form. 3/4382 useless extension candidates. Maximal degree in co-relation 37655. Up to 2579 conditions per place. [2024-06-28 01:39:56,621 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 320 selfloop transitions, 223 changer transitions 0/549 dead transitions. [2024-06-28 01:39:56,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 549 transitions, 12178 flow [2024-06-28 01:39:56,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:56,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:56,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:39:56,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:39:56,622 INFO L175 Difference]: Start difference. First operand has 399 places, 505 transitions, 10264 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:39:56,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 549 transitions, 12178 flow [2024-06-28 01:39:57,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 549 transitions, 11563 flow, removed 75 selfloop flow, removed 7 redundant places. [2024-06-28 01:39:57,960 INFO L231 Difference]: Finished difference. Result has 402 places, 507 transitions, 10186 flow [2024-06-28 01:39:57,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9671, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10186, PETRI_PLACES=402, PETRI_TRANSITIONS=507} [2024-06-28 01:39:57,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-28 01:39:57,961 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 507 transitions, 10186 flow [2024-06-28 01:39:57,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:57,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:39:57,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:39:57,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:39:57,961 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:39:57,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:39:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1840143998, now seen corresponding path program 16 times [2024-06-28 01:39:57,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:39:57,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642218219] [2024-06-28 01:39:57,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:39:57,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:39:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:39:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:39:58,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:39:58,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642218219] [2024-06-28 01:39:58,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642218219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:39:58,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:39:58,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:39:58,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991332337] [2024-06-28 01:39:58,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:39:58,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:39:58,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:39:58,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:39:58,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:39:58,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:39:58,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 507 transitions, 10186 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:39:58,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:39:58,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:39:58,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:59,782 INFO L124 PetriNetUnfolderBase]: 2648/4413 cut-off events. [2024-06-28 01:39:59,782 INFO L125 PetriNetUnfolderBase]: For 177717/177717 co-relation queries the response was YES. [2024-06-28 01:39:59,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37160 conditions, 4413 events. 2648/4413 cut-off events. For 177717/177717 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27588 event pairs, 315 based on Foata normal form. 4/4367 useless extension candidates. Maximal degree in co-relation 36980. Up to 2147 conditions per place. [2024-06-28 01:39:59,833 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 313 selfloop transitions, 228 changer transitions 0/547 dead transitions. [2024-06-28 01:39:59,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 547 transitions, 11827 flow [2024-06-28 01:39:59,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:39:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:39:59,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-28 01:39:59,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:39:59,835 INFO L175 Difference]: Start difference. First operand has 402 places, 507 transitions, 10186 flow. Second operand 10 states and 182 transitions. [2024-06-28 01:39:59,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 547 transitions, 11827 flow [2024-06-28 01:40:01,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 547 transitions, 11372 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:01,096 INFO L231 Difference]: Finished difference. Result has 406 places, 507 transitions, 10198 flow [2024-06-28 01:40:01,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9731, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10198, PETRI_PLACES=406, PETRI_TRANSITIONS=507} [2024-06-28 01:40:01,097 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 01:40:01,097 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 507 transitions, 10198 flow [2024-06-28 01:40:01,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:01,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:01,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:01,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:40:01,098 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:01,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1275299376, now seen corresponding path program 17 times [2024-06-28 01:40:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:01,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641412621] [2024-06-28 01:40:01,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:01,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:01,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:01,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641412621] [2024-06-28 01:40:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641412621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238244534] [2024-06-28 01:40:01,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:01,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:01,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:01,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:01,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:01,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:01,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 507 transitions, 10198 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:01,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:01,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:01,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:03,162 INFO L124 PetriNetUnfolderBase]: 2640/4410 cut-off events. [2024-06-28 01:40:03,162 INFO L125 PetriNetUnfolderBase]: For 180785/180785 co-relation queries the response was YES. [2024-06-28 01:40:03,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36666 conditions, 4410 events. 2640/4410 cut-off events. For 180785/180785 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27576 event pairs, 876 based on Foata normal form. 4/4367 useless extension candidates. Maximal degree in co-relation 36485. Up to 4089 conditions per place. [2024-06-28 01:40:03,211 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 492 selfloop transitions, 41 changer transitions 0/539 dead transitions. [2024-06-28 01:40:03,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 539 transitions, 11598 flow [2024-06-28 01:40:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:03,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:40:03,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:40:03,213 INFO L175 Difference]: Start difference. First operand has 406 places, 507 transitions, 10198 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:40:03,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 539 transitions, 11598 flow [2024-06-28 01:40:04,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 539 transitions, 11001 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:04,402 INFO L231 Difference]: Finished difference. Result has 408 places, 507 transitions, 9694 flow [2024-06-28 01:40:04,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9601, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9694, PETRI_PLACES=408, PETRI_TRANSITIONS=507} [2024-06-28 01:40:04,404 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 367 predicate places. [2024-06-28 01:40:04,404 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 507 transitions, 9694 flow [2024-06-28 01:40:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:04,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:04,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:04,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:40:04,404 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:04,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1275655876, now seen corresponding path program 6 times [2024-06-28 01:40:04,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:04,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777213710] [2024-06-28 01:40:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:04,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:05,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:05,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:05,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777213710] [2024-06-28 01:40:05,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777213710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:05,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:05,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:05,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945274637] [2024-06-28 01:40:05,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:05,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:05,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:05,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:05,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 507 transitions, 9694 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:05,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:05,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:05,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:06,457 INFO L124 PetriNetUnfolderBase]: 2636/4403 cut-off events. [2024-06-28 01:40:06,457 INFO L125 PetriNetUnfolderBase]: For 160165/160165 co-relation queries the response was YES. [2024-06-28 01:40:06,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35514 conditions, 4403 events. 2636/4403 cut-off events. For 160165/160165 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27527 event pairs, 876 based on Foata normal form. 1/4357 useless extension candidates. Maximal degree in co-relation 35332. Up to 4108 conditions per place. [2024-06-28 01:40:06,518 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 496 selfloop transitions, 41 changer transitions 0/543 dead transitions. [2024-06-28 01:40:06,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 543 transitions, 11000 flow [2024-06-28 01:40:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:06,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:40:06,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-28 01:40:06,519 INFO L175 Difference]: Start difference. First operand has 408 places, 507 transitions, 9694 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:40:06,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 543 transitions, 11000 flow [2024-06-28 01:40:07,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 543 transitions, 10833 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:07,770 INFO L231 Difference]: Finished difference. Result has 411 places, 508 transitions, 9655 flow [2024-06-28 01:40:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9546, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9655, PETRI_PLACES=411, PETRI_TRANSITIONS=508} [2024-06-28 01:40:07,771 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 370 predicate places. [2024-06-28 01:40:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 508 transitions, 9655 flow [2024-06-28 01:40:07,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:07,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:07,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:40:07,772 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1618259948, now seen corresponding path program 18 times [2024-06-28 01:40:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:07,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757483194] [2024-06-28 01:40:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:07,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:08,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:08,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:08,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757483194] [2024-06-28 01:40:08,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757483194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:08,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:08,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:08,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567243687] [2024-06-28 01:40:08,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:08,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:08,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:08,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:08,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:08,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 508 transitions, 9655 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:08,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:08,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:08,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:09,646 INFO L124 PetriNetUnfolderBase]: 2704/4496 cut-off events. [2024-06-28 01:40:09,647 INFO L125 PetriNetUnfolderBase]: For 177761/177761 co-relation queries the response was YES. [2024-06-28 01:40:09,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36800 conditions, 4496 events. 2704/4496 cut-off events. For 177761/177761 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 28023 event pairs, 495 based on Foata normal form. 2/4448 useless extension candidates. Maximal degree in co-relation 36617. Up to 2174 conditions per place. [2024-06-28 01:40:09,704 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 218 changer transitions 0/558 dead transitions. [2024-06-28 01:40:09,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 558 transitions, 11783 flow [2024-06-28 01:40:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:09,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:40:09,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-28 01:40:09,707 INFO L175 Difference]: Start difference. First operand has 411 places, 508 transitions, 9655 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:40:09,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 558 transitions, 11783 flow [2024-06-28 01:40:10,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 558 transitions, 11691 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:10,795 INFO L231 Difference]: Finished difference. Result has 413 places, 519 transitions, 10361 flow [2024-06-28 01:40:10,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9563, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10361, PETRI_PLACES=413, PETRI_TRANSITIONS=519} [2024-06-28 01:40:10,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 01:40:10,796 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 519 transitions, 10361 flow [2024-06-28 01:40:10,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:10,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:10,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:40:10,796 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:10,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1618490588, now seen corresponding path program 19 times [2024-06-28 01:40:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562694785] [2024-06-28 01:40:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:10,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:11,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:11,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562694785] [2024-06-28 01:40:11,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562694785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:11,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:11,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:11,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176320451] [2024-06-28 01:40:11,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:11,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:11,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:11,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:11,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:11,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:11,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 519 transitions, 10361 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:11,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:11,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:11,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:12,631 INFO L124 PetriNetUnfolderBase]: 2724/4526 cut-off events. [2024-06-28 01:40:12,631 INFO L125 PetriNetUnfolderBase]: For 189868/189868 co-relation queries the response was YES. [2024-06-28 01:40:12,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38085 conditions, 4526 events. 2724/4526 cut-off events. For 189868/189868 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 28266 event pairs, 489 based on Foata normal form. 2/4478 useless extension candidates. Maximal degree in co-relation 37900. Up to 2181 conditions per place. [2024-06-28 01:40:12,690 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 221 changer transitions 0/561 dead transitions. [2024-06-28 01:40:12,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 561 transitions, 12284 flow [2024-06-28 01:40:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:12,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:40:12,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:40:12,691 INFO L175 Difference]: Start difference. First operand has 413 places, 519 transitions, 10361 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:40:12,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 561 transitions, 12284 flow [2024-06-28 01:40:13,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 561 transitions, 11474 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:13,979 INFO L231 Difference]: Finished difference. Result has 415 places, 522 transitions, 10112 flow [2024-06-28 01:40:13,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9573, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10112, PETRI_PLACES=415, PETRI_TRANSITIONS=522} [2024-06-28 01:40:13,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-28 01:40:13,979 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 522 transitions, 10112 flow [2024-06-28 01:40:13,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:13,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:13,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:13,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:40:13,980 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:13,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1618499268, now seen corresponding path program 7 times [2024-06-28 01:40:13,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:13,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349057109] [2024-06-28 01:40:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:13,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:14,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:14,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349057109] [2024-06-28 01:40:14,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349057109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:14,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:14,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:14,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695178428] [2024-06-28 01:40:14,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:14,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:14,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:14,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:14,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 522 transitions, 10112 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:14,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:14,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:14,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:16,077 INFO L124 PetriNetUnfolderBase]: 2720/4521 cut-off events. [2024-06-28 01:40:16,077 INFO L125 PetriNetUnfolderBase]: For 175108/175108 co-relation queries the response was YES. [2024-06-28 01:40:16,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36822 conditions, 4521 events. 2720/4521 cut-off events. For 175108/175108 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 28211 event pairs, 464 based on Foata normal form. 3/4474 useless extension candidates. Maximal degree in co-relation 36637. Up to 2623 conditions per place. [2024-06-28 01:40:16,127 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 337 selfloop transitions, 218 changer transitions 0/561 dead transitions. [2024-06-28 01:40:16,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 561 transitions, 11787 flow [2024-06-28 01:40:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-28 01:40:16,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:40:16,129 INFO L175 Difference]: Start difference. First operand has 415 places, 522 transitions, 10112 flow. Second operand 10 states and 180 transitions. [2024-06-28 01:40:16,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 561 transitions, 11787 flow [2024-06-28 01:40:17,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 561 transitions, 11149 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:17,320 INFO L231 Difference]: Finished difference. Result has 417 places, 523 transitions, 9954 flow [2024-06-28 01:40:17,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9477, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9954, PETRI_PLACES=417, PETRI_TRANSITIONS=523} [2024-06-28 01:40:17,320 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 01:40:17,320 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 523 transitions, 9954 flow [2024-06-28 01:40:17,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:17,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:17,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:17,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:40:17,321 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:17,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1618498958, now seen corresponding path program 20 times [2024-06-28 01:40:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:17,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158462385] [2024-06-28 01:40:17,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:17,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:17,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:17,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158462385] [2024-06-28 01:40:17,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158462385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:17,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:17,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:17,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138828044] [2024-06-28 01:40:17,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:17,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:17,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:17,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:17,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:17,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:17,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 523 transitions, 9954 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:17,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:17,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:17,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:19,166 INFO L124 PetriNetUnfolderBase]: 2712/4509 cut-off events. [2024-06-28 01:40:19,167 INFO L125 PetriNetUnfolderBase]: For 164909/164909 co-relation queries the response was YES. [2024-06-28 01:40:19,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36197 conditions, 4509 events. 2712/4509 cut-off events. For 164909/164909 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 28142 event pairs, 488 based on Foata normal form. 4/4463 useless extension candidates. Maximal degree in co-relation 36011. Up to 2176 conditions per place. [2024-06-28 01:40:19,228 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 332 selfloop transitions, 223 changer transitions 0/561 dead transitions. [2024-06-28 01:40:19,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 561 transitions, 11602 flow [2024-06-28 01:40:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:19,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:19,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-28 01:40:19,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-28 01:40:19,229 INFO L175 Difference]: Start difference. First operand has 417 places, 523 transitions, 9954 flow. Second operand 10 states and 183 transitions. [2024-06-28 01:40:19,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 561 transitions, 11602 flow [2024-06-28 01:40:20,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 561 transitions, 10719 flow, removed 91 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:20,377 INFO L231 Difference]: Finished difference. Result has 418 places, 523 transitions, 9528 flow [2024-06-28 01:40:20,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9071, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9528, PETRI_PLACES=418, PETRI_TRANSITIONS=523} [2024-06-28 01:40:20,377 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 01:40:20,377 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 523 transitions, 9528 flow [2024-06-28 01:40:20,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:20,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:20,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:20,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:40:20,377 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:20,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:20,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1611823914, now seen corresponding path program 20 times [2024-06-28 01:40:20,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:20,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308556727] [2024-06-28 01:40:20,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:20,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:21,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:21,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308556727] [2024-06-28 01:40:21,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308556727] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:21,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:21,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828487301] [2024-06-28 01:40:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:21,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:21,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 523 transitions, 9528 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:21,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:21,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:21,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:22,338 INFO L124 PetriNetUnfolderBase]: 2725/4532 cut-off events. [2024-06-28 01:40:22,338 INFO L125 PetriNetUnfolderBase]: For 149832/149832 co-relation queries the response was YES. [2024-06-28 01:40:22,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35832 conditions, 4532 events. 2725/4532 cut-off events. For 149832/149832 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28345 event pairs, 343 based on Foata normal form. 2/4484 useless extension candidates. Maximal degree in co-relation 35645. Up to 3719 conditions per place. [2024-06-28 01:40:22,398 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 451 selfloop transitions, 97 changer transitions 0/554 dead transitions. [2024-06-28 01:40:22,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 554 transitions, 10813 flow [2024-06-28 01:40:22,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:40:22,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:40:22,399 INFO L175 Difference]: Start difference. First operand has 418 places, 523 transitions, 9528 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:40:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 554 transitions, 10813 flow [2024-06-28 01:40:23,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 554 transitions, 10365 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:23,672 INFO L231 Difference]: Finished difference. Result has 418 places, 524 transitions, 9313 flow [2024-06-28 01:40:23,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9080, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9313, PETRI_PLACES=418, PETRI_TRANSITIONS=524} [2024-06-28 01:40:23,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 377 predicate places. [2024-06-28 01:40:23,673 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 524 transitions, 9313 flow [2024-06-28 01:40:23,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:23,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:23,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:23,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:40:23,673 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:23,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:23,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1611819264, now seen corresponding path program 21 times [2024-06-28 01:40:23,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:23,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396369429] [2024-06-28 01:40:23,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:23,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:24,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396369429] [2024-06-28 01:40:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396369429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:24,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:24,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:24,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885727175] [2024-06-28 01:40:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:24,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:24,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:24,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:24,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:24,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:24,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 524 transitions, 9313 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:24,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:24,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:24,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:25,673 INFO L124 PetriNetUnfolderBase]: 2723/4530 cut-off events. [2024-06-28 01:40:25,673 INFO L125 PetriNetUnfolderBase]: For 143296/143296 co-relation queries the response was YES. [2024-06-28 01:40:25,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35212 conditions, 4530 events. 2723/4530 cut-off events. For 143296/143296 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28349 event pairs, 338 based on Foata normal form. 2/4482 useless extension candidates. Maximal degree in co-relation 35024. Up to 3640 conditions per place. [2024-06-28 01:40:25,725 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 449 selfloop transitions, 100 changer transitions 0/555 dead transitions. [2024-06-28 01:40:25,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 555 transitions, 10600 flow [2024-06-28 01:40:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:40:25,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:40:25,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:40:25,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:40:25,726 INFO L175 Difference]: Start difference. First operand has 418 places, 524 transitions, 9313 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:40:25,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 555 transitions, 10600 flow [2024-06-28 01:40:26,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 555 transitions, 10378 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:26,893 INFO L231 Difference]: Finished difference. Result has 420 places, 525 transitions, 9332 flow [2024-06-28 01:40:26,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9091, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9332, PETRI_PLACES=420, PETRI_TRANSITIONS=525} [2024-06-28 01:40:26,894 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 01:40:26,894 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 525 transitions, 9332 flow [2024-06-28 01:40:26,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:26,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:26,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:26,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:40:26,894 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:26,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:26,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1612003838, now seen corresponding path program 21 times [2024-06-28 01:40:26,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:26,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655095466] [2024-06-28 01:40:26,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:26,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655095466] [2024-06-28 01:40:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655095466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:40:27,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849587022] [2024-06-28 01:40:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:40:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:40:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:40:27,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:27,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 525 transitions, 9332 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:27,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:27,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:27,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:28,690 INFO L124 PetriNetUnfolderBase]: 2717/4520 cut-off events. [2024-06-28 01:40:28,690 INFO L125 PetriNetUnfolderBase]: For 138183/138183 co-relation queries the response was YES. [2024-06-28 01:40:28,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34879 conditions, 4520 events. 2717/4520 cut-off events. For 138183/138183 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 28266 event pairs, 492 based on Foata normal form. 2/4472 useless extension candidates. Maximal degree in co-relation 34690. Up to 2193 conditions per place. [2024-06-28 01:40:28,752 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 312 selfloop transitions, 246 changer transitions 0/564 dead transitions. [2024-06-28 01:40:28,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 564 transitions, 10883 flow [2024-06-28 01:40:28,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:40:28,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:40:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-28 01:40:28,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-28 01:40:28,754 INFO L175 Difference]: Start difference. First operand has 420 places, 525 transitions, 9332 flow. Second operand 10 states and 181 transitions. [2024-06-28 01:40:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 564 transitions, 10883 flow [2024-06-28 01:40:29,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 564 transitions, 10533 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:29,896 INFO L231 Difference]: Finished difference. Result has 423 places, 527 transitions, 9547 flow [2024-06-28 01:40:29,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9026, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9547, PETRI_PLACES=423, PETRI_TRANSITIONS=527} [2024-06-28 01:40:29,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-28 01:40:29,897 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 527 transitions, 9547 flow [2024-06-28 01:40:29,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 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) [2024-06-28 01:40:29,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:29,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:40:29,898 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:29,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1169338712, now seen corresponding path program 1 times [2024-06-28 01:40:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:29,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226113751] [2024-06-28 01:40:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:29,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:30,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:30,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226113751] [2024-06-28 01:40:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226113751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64856535] [2024-06-28 01:40:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:30,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:30,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:30,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:30,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 527 transitions, 9547 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:30,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:30,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:30,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:31,889 INFO L124 PetriNetUnfolderBase]: 2736/4559 cut-off events. [2024-06-28 01:40:31,890 INFO L125 PetriNetUnfolderBase]: For 140805/140805 co-relation queries the response was YES. [2024-06-28 01:40:31,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35376 conditions, 4559 events. 2736/4559 cut-off events. For 140805/140805 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28555 event pairs, 728 based on Foata normal form. 2/4515 useless extension candidates. Maximal degree in co-relation 35186. Up to 4135 conditions per place. [2024-06-28 01:40:31,947 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 501 selfloop transitions, 65 changer transitions 0/572 dead transitions. [2024-06-28 01:40:31,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 572 transitions, 10940 flow [2024-06-28 01:40:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:31,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:40:31,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:40:31,948 INFO L175 Difference]: Start difference. First operand has 423 places, 527 transitions, 9547 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:40:31,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 572 transitions, 10940 flow [2024-06-28 01:40:33,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 572 transitions, 10513 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-28 01:40:33,154 INFO L231 Difference]: Finished difference. Result has 429 places, 533 transitions, 9383 flow [2024-06-28 01:40:33,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9120, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9383, PETRI_PLACES=429, PETRI_TRANSITIONS=533} [2024-06-28 01:40:33,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 01:40:33,155 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 533 transitions, 9383 flow [2024-06-28 01:40:33,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:33,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:33,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:40:33,155 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:33,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash 965879050, now seen corresponding path program 2 times [2024-06-28 01:40:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:33,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134521490] [2024-06-28 01:40:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:33,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:33,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134521490] [2024-06-28 01:40:33,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134521490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:33,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:33,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:33,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091206140] [2024-06-28 01:40:33,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:33,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:33,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:33,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:33,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:33,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:33,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 533 transitions, 9383 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:33,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:33,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:33,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:35,132 INFO L124 PetriNetUnfolderBase]: 2760/4601 cut-off events. [2024-06-28 01:40:35,132 INFO L125 PetriNetUnfolderBase]: For 140968/140968 co-relation queries the response was YES. [2024-06-28 01:40:35,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35067 conditions, 4601 events. 2760/4601 cut-off events. For 140968/140968 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 28829 event pairs, 629 based on Foata normal form. 2/4557 useless extension candidates. Maximal degree in co-relation 34874. Up to 4103 conditions per place. [2024-06-28 01:40:35,191 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 499 selfloop transitions, 71 changer transitions 0/576 dead transitions. [2024-06-28 01:40:35,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 576 transitions, 10793 flow [2024-06-28 01:40:35,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:35,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:40:35,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:40:35,193 INFO L175 Difference]: Start difference. First operand has 429 places, 533 transitions, 9383 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:40:35,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 576 transitions, 10793 flow [2024-06-28 01:40:36,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 576 transitions, 10594 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:40:36,388 INFO L231 Difference]: Finished difference. Result has 434 places, 537 transitions, 9453 flow [2024-06-28 01:40:36,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9232, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9453, PETRI_PLACES=434, PETRI_TRANSITIONS=537} [2024-06-28 01:40:36,389 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 01:40:36,389 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 537 transitions, 9453 flow [2024-06-28 01:40:36,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:36,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:36,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:36,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:40:36,389 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:36,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:36,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1406419858, now seen corresponding path program 3 times [2024-06-28 01:40:36,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:36,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650972715] [2024-06-28 01:40:36,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:36,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:37,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:37,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650972715] [2024-06-28 01:40:37,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650972715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:37,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:37,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:37,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976126890] [2024-06-28 01:40:37,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:37,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:37,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:37,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:37,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 537 transitions, 9453 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:37,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:37,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:37,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:38,682 INFO L124 PetriNetUnfolderBase]: 2793/4659 cut-off events. [2024-06-28 01:40:38,682 INFO L125 PetriNetUnfolderBase]: For 151140/151140 co-relation queries the response was YES. [2024-06-28 01:40:38,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35678 conditions, 4659 events. 2793/4659 cut-off events. For 151140/151140 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 29400 event pairs, 691 based on Foata normal form. 2/4615 useless extension candidates. Maximal degree in co-relation 35484. Up to 4114 conditions per place. [2024-06-28 01:40:38,734 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 492 selfloop transitions, 83 changer transitions 0/581 dead transitions. [2024-06-28 01:40:38,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 581 transitions, 11079 flow [2024-06-28 01:40:38,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:38,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:40:38,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:40:38,735 INFO L175 Difference]: Start difference. First operand has 434 places, 537 transitions, 9453 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:40:38,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 581 transitions, 11079 flow [2024-06-28 01:40:40,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 581 transitions, 10898 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:40,095 INFO L231 Difference]: Finished difference. Result has 436 places, 541 transitions, 9566 flow [2024-06-28 01:40:40,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9272, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9566, PETRI_PLACES=436, PETRI_TRANSITIONS=541} [2024-06-28 01:40:40,096 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 01:40:40,096 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 541 transitions, 9566 flow [2024-06-28 01:40:40,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:40,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:40,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:40:40,096 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:40,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:40,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1416614735, now seen corresponding path program 1 times [2024-06-28 01:40:40,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:40,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082187514] [2024-06-28 01:40:40,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:40,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:40,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:40,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:40,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082187514] [2024-06-28 01:40:40,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082187514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:40,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:40,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:40,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006805498] [2024-06-28 01:40:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:40,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:40,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:40,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 541 transitions, 9566 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:40,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:40,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:40,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:42,138 INFO L124 PetriNetUnfolderBase]: 2803/4679 cut-off events. [2024-06-28 01:40:42,138 INFO L125 PetriNetUnfolderBase]: For 149990/149990 co-relation queries the response was YES. [2024-06-28 01:40:42,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35931 conditions, 4679 events. 2803/4679 cut-off events. For 149990/149990 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 29493 event pairs, 711 based on Foata normal form. 1/4634 useless extension candidates. Maximal degree in co-relation 35736. Up to 4214 conditions per place. [2024-06-28 01:40:42,203 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 489 selfloop transitions, 88 changer transitions 0/583 dead transitions. [2024-06-28 01:40:42,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 583 transitions, 11004 flow [2024-06-28 01:40:42,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:40:42,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:40:42,204 INFO L175 Difference]: Start difference. First operand has 436 places, 541 transitions, 9566 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:40:42,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 583 transitions, 11004 flow [2024-06-28 01:40:43,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 583 transitions, 10807 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:43,578 INFO L231 Difference]: Finished difference. Result has 439 places, 544 transitions, 9672 flow [2024-06-28 01:40:43,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9369, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9672, PETRI_PLACES=439, PETRI_TRANSITIONS=544} [2024-06-28 01:40:43,578 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 398 predicate places. [2024-06-28 01:40:43,578 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 544 transitions, 9672 flow [2024-06-28 01:40:43,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:43,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:43,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:43,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:40:43,579 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:43,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1416608008, now seen corresponding path program 4 times [2024-06-28 01:40:43,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698635598] [2024-06-28 01:40:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:44,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:44,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698635598] [2024-06-28 01:40:44,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698635598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:44,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:44,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978419107] [2024-06-28 01:40:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:44,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:44,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:44,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:44,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 544 transitions, 9672 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:44,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:44,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:44,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:45,681 INFO L124 PetriNetUnfolderBase]: 2800/4673 cut-off events. [2024-06-28 01:40:45,681 INFO L125 PetriNetUnfolderBase]: For 147898/147898 co-relation queries the response was YES. [2024-06-28 01:40:45,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35841 conditions, 4673 events. 2800/4673 cut-off events. For 147898/147898 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 29515 event pairs, 714 based on Foata normal form. 2/4629 useless extension candidates. Maximal degree in co-relation 35644. Up to 4228 conditions per place. [2024-06-28 01:40:45,747 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 496 selfloop transitions, 81 changer transitions 0/583 dead transitions. [2024-06-28 01:40:45,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 583 transitions, 11002 flow [2024-06-28 01:40:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:45,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:40:45,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:40:45,748 INFO L175 Difference]: Start difference. First operand has 439 places, 544 transitions, 9672 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:40:45,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 583 transitions, 11002 flow [2024-06-28 01:40:47,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 583 transitions, 10783 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:40:47,192 INFO L231 Difference]: Finished difference. Result has 442 places, 544 transitions, 9623 flow [2024-06-28 01:40:47,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9453, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9623, PETRI_PLACES=442, PETRI_TRANSITIONS=544} [2024-06-28 01:40:47,192 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-28 01:40:47,192 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 544 transitions, 9623 flow [2024-06-28 01:40:47,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:47,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:47,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:47,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:40:47,193 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:47,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1411638088, now seen corresponding path program 5 times [2024-06-28 01:40:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:47,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241716705] [2024-06-28 01:40:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:47,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:47,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:47,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241716705] [2024-06-28 01:40:47,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241716705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:47,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:47,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257218455] [2024-06-28 01:40:47,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:47,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:48,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:48,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 544 transitions, 9623 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:48,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:48,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:48,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:49,357 INFO L124 PetriNetUnfolderBase]: 2815/4692 cut-off events. [2024-06-28 01:40:49,357 INFO L125 PetriNetUnfolderBase]: For 152306/152306 co-relation queries the response was YES. [2024-06-28 01:40:49,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35930 conditions, 4692 events. 2815/4692 cut-off events. For 152306/152306 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 29629 event pairs, 690 based on Foata normal form. 2/4648 useless extension candidates. Maximal degree in co-relation 35732. Up to 4051 conditions per place. [2024-06-28 01:40:49,421 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 498 selfloop transitions, 81 changer transitions 0/585 dead transitions. [2024-06-28 01:40:49,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 585 transitions, 11015 flow [2024-06-28 01:40:49,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:49,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:40:49,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:40:49,422 INFO L175 Difference]: Start difference. First operand has 442 places, 544 transitions, 9623 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:40:49,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 585 transitions, 11015 flow [2024-06-28 01:40:50,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 585 transitions, 10843 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:40:50,836 INFO L231 Difference]: Finished difference. Result has 443 places, 546 transitions, 9685 flow [2024-06-28 01:40:50,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9451, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9685, PETRI_PLACES=443, PETRI_TRANSITIONS=546} [2024-06-28 01:40:50,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-28 01:40:50,837 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 546 transitions, 9685 flow [2024-06-28 01:40:50,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:50,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:50,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:50,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:40:50,837 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:50,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:50,838 INFO L85 PathProgramCache]: Analyzing trace with hash 614653214, now seen corresponding path program 6 times [2024-06-28 01:40:50,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:50,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121018968] [2024-06-28 01:40:50,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:50,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:51,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121018968] [2024-06-28 01:40:51,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121018968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:51,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:51,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:51,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133746248] [2024-06-28 01:40:51,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:51,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:51,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:51,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:51,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 546 transitions, 9685 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:51,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:51,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:51,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:53,179 INFO L124 PetriNetUnfolderBase]: 2848/4742 cut-off events. [2024-06-28 01:40:53,179 INFO L125 PetriNetUnfolderBase]: For 153701/153701 co-relation queries the response was YES. [2024-06-28 01:40:53,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36298 conditions, 4742 events. 2848/4742 cut-off events. For 153701/153701 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 29926 event pairs, 760 based on Foata normal form. 2/4698 useless extension candidates. Maximal degree in co-relation 36099. Up to 4288 conditions per place. [2024-06-28 01:40:53,236 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 523 selfloop transitions, 64 changer transitions 0/593 dead transitions. [2024-06-28 01:40:53,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 593 transitions, 11125 flow [2024-06-28 01:40:53,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:53,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:40:53,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:40:53,238 INFO L175 Difference]: Start difference. First operand has 443 places, 546 transitions, 9685 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:40:53,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 593 transitions, 11125 flow [2024-06-28 01:40:54,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 593 transitions, 10905 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:54,573 INFO L231 Difference]: Finished difference. Result has 445 places, 552 transitions, 9711 flow [2024-06-28 01:40:54,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9469, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9711, PETRI_PLACES=445, PETRI_TRANSITIONS=552} [2024-06-28 01:40:54,573 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 01:40:54,573 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 552 transitions, 9711 flow [2024-06-28 01:40:54,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:54,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:54,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:54,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:40:54,574 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:54,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:54,574 INFO L85 PathProgramCache]: Analyzing trace with hash 673783544, now seen corresponding path program 7 times [2024-06-28 01:40:54,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:54,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787497118] [2024-06-28 01:40:54,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:54,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:55,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:55,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:55,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787497118] [2024-06-28 01:40:55,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787497118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:55,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:55,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:55,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442940033] [2024-06-28 01:40:55,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:55,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:55,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:55,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 552 transitions, 9711 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:55,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:55,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:55,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:40:56,740 INFO L124 PetriNetUnfolderBase]: 2904/4837 cut-off events. [2024-06-28 01:40:56,740 INFO L125 PetriNetUnfolderBase]: For 166072/166072 co-relation queries the response was YES. [2024-06-28 01:40:56,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37152 conditions, 4837 events. 2904/4837 cut-off events. For 166072/166072 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 30703 event pairs, 758 based on Foata normal form. 2/4793 useless extension candidates. Maximal degree in co-relation 36952. Up to 4306 conditions per place. [2024-06-28 01:40:56,805 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 522 selfloop transitions, 81 changer transitions 0/609 dead transitions. [2024-06-28 01:40:56,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 609 transitions, 11696 flow [2024-06-28 01:40:56,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:40:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:40:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:40:56,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:40:56,807 INFO L175 Difference]: Start difference. First operand has 445 places, 552 transitions, 9711 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:40:56,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 609 transitions, 11696 flow [2024-06-28 01:40:58,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 609 transitions, 11524 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-28 01:40:58,363 INFO L231 Difference]: Finished difference. Result has 451 places, 569 transitions, 10182 flow [2024-06-28 01:40:58,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9539, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10182, PETRI_PLACES=451, PETRI_TRANSITIONS=569} [2024-06-28 01:40:58,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 01:40:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 569 transitions, 10182 flow [2024-06-28 01:40:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:58,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:40:58,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:40:58,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:40:58,365 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:40:58,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:40:58,365 INFO L85 PathProgramCache]: Analyzing trace with hash 673789341, now seen corresponding path program 2 times [2024-06-28 01:40:58,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:40:58,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137447353] [2024-06-28 01:40:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:40:58,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:40:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:40:59,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:40:59,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:40:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137447353] [2024-06-28 01:40:59,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137447353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:40:59,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:40:59,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:40:59,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280068983] [2024-06-28 01:40:59,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:40:59,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:40:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:40:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:40:59,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:40:59,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:40:59,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 569 transitions, 10182 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:40:59,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:40:59,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:40:59,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:00,629 INFO L124 PetriNetUnfolderBase]: 2911/4847 cut-off events. [2024-06-28 01:41:00,629 INFO L125 PetriNetUnfolderBase]: For 160101/160101 co-relation queries the response was YES. [2024-06-28 01:41:00,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37469 conditions, 4847 events. 2911/4847 cut-off events. For 160101/160101 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 30789 event pairs, 780 based on Foata normal form. 1/4802 useless extension candidates. Maximal degree in co-relation 37264. Up to 4376 conditions per place. [2024-06-28 01:41:00,698 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 520 selfloop transitions, 88 changer transitions 0/614 dead transitions. [2024-06-28 01:41:00,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 614 transitions, 11756 flow [2024-06-28 01:41:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:41:00,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:41:00,699 INFO L175 Difference]: Start difference. First operand has 451 places, 569 transitions, 10182 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:41:00,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 614 transitions, 11756 flow [2024-06-28 01:41:02,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 614 transitions, 11583 flow, removed 74 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:02,482 INFO L231 Difference]: Finished difference. Result has 459 places, 575 transitions, 10398 flow [2024-06-28 01:41:02,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10039, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10398, PETRI_PLACES=459, PETRI_TRANSITIONS=575} [2024-06-28 01:41:02,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-28 01:41:02,482 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 575 transitions, 10398 flow [2024-06-28 01:41:02,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:02,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:02,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:02,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:41:02,483 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:02,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 673789124, now seen corresponding path program 8 times [2024-06-28 01:41:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435823144] [2024-06-28 01:41:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:02,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:03,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435823144] [2024-06-28 01:41:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435823144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:03,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:03,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:03,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993106354] [2024-06-28 01:41:03,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:03,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:03,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:03,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:03,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:03,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:03,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 575 transitions, 10398 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:03,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:03,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:03,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:04,789 INFO L124 PetriNetUnfolderBase]: 2911/4847 cut-off events. [2024-06-28 01:41:04,789 INFO L125 PetriNetUnfolderBase]: For 158581/158581 co-relation queries the response was YES. [2024-06-28 01:41:04,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37406 conditions, 4847 events. 2911/4847 cut-off events. For 158581/158581 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30759 event pairs, 779 based on Foata normal form. 2/4803 useless extension candidates. Maximal degree in co-relation 37199. Up to 4391 conditions per place. [2024-06-28 01:41:04,858 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 528 selfloop transitions, 82 changer transitions 0/616 dead transitions. [2024-06-28 01:41:04,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 616 transitions, 11866 flow [2024-06-28 01:41:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:04,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:04,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:41:04,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:41:04,859 INFO L175 Difference]: Start difference. First operand has 459 places, 575 transitions, 10398 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:41:04,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 616 transitions, 11866 flow [2024-06-28 01:41:06,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 616 transitions, 11651 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:06,239 INFO L231 Difference]: Finished difference. Result has 461 places, 577 transitions, 10438 flow [2024-06-28 01:41:06,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10183, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10438, PETRI_PLACES=461, PETRI_TRANSITIONS=577} [2024-06-28 01:41:06,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-28 01:41:06,240 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 577 transitions, 10438 flow [2024-06-28 01:41:06,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:06,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:06,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:41:06,241 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:06,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1713318722, now seen corresponding path program 9 times [2024-06-28 01:41:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:06,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432362874] [2024-06-28 01:41:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:06,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:06,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432362874] [2024-06-28 01:41:06,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432362874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:06,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:06,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:06,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803041417] [2024-06-28 01:41:06,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:06,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:06,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:06,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:06,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:07,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:07,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 577 transitions, 10438 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:07,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:07,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:07,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:08,522 INFO L124 PetriNetUnfolderBase]: 2938/4892 cut-off events. [2024-06-28 01:41:08,522 INFO L125 PetriNetUnfolderBase]: For 167052/167052 co-relation queries the response was YES. [2024-06-28 01:41:08,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37730 conditions, 4892 events. 2938/4892 cut-off events. For 167052/167052 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 31111 event pairs, 770 based on Foata normal form. 2/4848 useless extension candidates. Maximal degree in co-relation 37522. Up to 4237 conditions per place. [2024-06-28 01:41:08,587 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 529 selfloop transitions, 87 changer transitions 0/622 dead transitions. [2024-06-28 01:41:08,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 622 transitions, 12004 flow [2024-06-28 01:41:08,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:08,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:08,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:41:08,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:41:08,588 INFO L175 Difference]: Start difference. First operand has 461 places, 577 transitions, 10438 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:41:08,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 622 transitions, 12004 flow [2024-06-28 01:41:09,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 622 transitions, 11787 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:09,875 INFO L231 Difference]: Finished difference. Result has 463 places, 583 transitions, 10575 flow [2024-06-28 01:41:09,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10221, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10575, PETRI_PLACES=463, PETRI_TRANSITIONS=583} [2024-06-28 01:41:09,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-28 01:41:09,876 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 583 transitions, 10575 flow [2024-06-28 01:41:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:09,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:09,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:09,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:41:09,877 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:09,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash 741165460, now seen corresponding path program 10 times [2024-06-28 01:41:09,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578069282] [2024-06-28 01:41:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578069282] [2024-06-28 01:41:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578069282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:10,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:10,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539498626] [2024-06-28 01:41:10,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:10,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:10,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:10,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:10,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 583 transitions, 10575 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:10,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:10,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:10,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:12,257 INFO L124 PetriNetUnfolderBase]: 2953/4918 cut-off events. [2024-06-28 01:41:12,257 INFO L125 PetriNetUnfolderBase]: For 170441/170441 co-relation queries the response was YES. [2024-06-28 01:41:12,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38046 conditions, 4918 events. 2953/4918 cut-off events. For 170441/170441 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 31196 event pairs, 728 based on Foata normal form. 2/4873 useless extension candidates. Maximal degree in co-relation 37837. Up to 4205 conditions per place. [2024-06-28 01:41:12,321 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 511 selfloop transitions, 108 changer transitions 0/625 dead transitions. [2024-06-28 01:41:12,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 625 transitions, 12085 flow [2024-06-28 01:41:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:12,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:12,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:41:12,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:41:12,323 INFO L175 Difference]: Start difference. First operand has 463 places, 583 transitions, 10575 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:41:12,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 625 transitions, 12085 flow [2024-06-28 01:41:13,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 625 transitions, 11859 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:13,608 INFO L231 Difference]: Finished difference. Result has 467 places, 585 transitions, 10656 flow [2024-06-28 01:41:13,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10353, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10656, PETRI_PLACES=467, PETRI_TRANSITIONS=585} [2024-06-28 01:41:13,608 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-28 01:41:13,609 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 585 transitions, 10656 flow [2024-06-28 01:41:13,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:13,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:13,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:13,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:41:13,609 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:13,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash -921492808, now seen corresponding path program 11 times [2024-06-28 01:41:13,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:13,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496888897] [2024-06-28 01:41:13,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:13,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:14,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:14,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496888897] [2024-06-28 01:41:14,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496888897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:14,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:14,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:14,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778440697] [2024-06-28 01:41:14,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:14,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:14,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:14,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:14,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:14,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:14,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 585 transitions, 10656 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:14,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:14,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:14,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:16,010 INFO L124 PetriNetUnfolderBase]: 2968/4942 cut-off events. [2024-06-28 01:41:16,010 INFO L125 PetriNetUnfolderBase]: For 172281/172281 co-relation queries the response was YES. [2024-06-28 01:41:16,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38413 conditions, 4942 events. 2968/4942 cut-off events. For 172281/172281 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 31402 event pairs, 726 based on Foata normal form. 2/4897 useless extension candidates. Maximal degree in co-relation 38202. Up to 4189 conditions per place. [2024-06-28 01:41:16,068 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 511 selfloop transitions, 110 changer transitions 0/627 dead transitions. [2024-06-28 01:41:16,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 627 transitions, 12168 flow [2024-06-28 01:41:16,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:16,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:41:16,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:41:16,069 INFO L175 Difference]: Start difference. First operand has 467 places, 585 transitions, 10656 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:41:16,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 627 transitions, 12168 flow [2024-06-28 01:41:17,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 627 transitions, 11881 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:17,448 INFO L231 Difference]: Finished difference. Result has 469 places, 587 transitions, 10680 flow [2024-06-28 01:41:17,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10680, PETRI_PLACES=469, PETRI_TRANSITIONS=587} [2024-06-28 01:41:17,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-28 01:41:17,449 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 587 transitions, 10680 flow [2024-06-28 01:41:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:17,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:17,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:17,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:41:17,450 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:17,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:17,450 INFO L85 PathProgramCache]: Analyzing trace with hash -921636958, now seen corresponding path program 12 times [2024-06-28 01:41:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68610004] [2024-06-28 01:41:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:18,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68610004] [2024-06-28 01:41:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68610004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:18,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848108448] [2024-06-28 01:41:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:18,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:18,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:18,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:18,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:18,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 587 transitions, 10680 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:18,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:18,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:18,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:19,751 INFO L124 PetriNetUnfolderBase]: 3001/4997 cut-off events. [2024-06-28 01:41:19,751 INFO L125 PetriNetUnfolderBase]: For 187636/187636 co-relation queries the response was YES. [2024-06-28 01:41:19,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39094 conditions, 4997 events. 3001/4997 cut-off events. For 187636/187636 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 31823 event pairs, 727 based on Foata normal form. 2/4952 useless extension candidates. Maximal degree in co-relation 38882. Up to 4126 conditions per place. [2024-06-28 01:41:19,826 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 512 selfloop transitions, 114 changer transitions 0/632 dead transitions. [2024-06-28 01:41:19,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 632 transitions, 12498 flow [2024-06-28 01:41:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-28 01:41:19,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:41:19,827 INFO L175 Difference]: Start difference. First operand has 469 places, 587 transitions, 10680 flow. Second operand 11 states and 187 transitions. [2024-06-28 01:41:19,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 632 transitions, 12498 flow [2024-06-28 01:41:21,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 632 transitions, 12203 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:21,453 INFO L231 Difference]: Finished difference. Result has 471 places, 591 transitions, 10794 flow [2024-06-28 01:41:21,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10385, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10794, PETRI_PLACES=471, PETRI_TRANSITIONS=591} [2024-06-28 01:41:21,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-28 01:41:21,454 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 591 transitions, 10794 flow [2024-06-28 01:41:21,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:21,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:21,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:21,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:41:21,454 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:21,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash -714833788, now seen corresponding path program 13 times [2024-06-28 01:41:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:21,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456263595] [2024-06-28 01:41:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:21,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:22,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:22,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456263595] [2024-06-28 01:41:22,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456263595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:22,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:41:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781190331] [2024-06-28 01:41:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:41:22,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:41:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:41:22,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:22,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 591 transitions, 10794 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:41:22,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:22,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:22,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:23,666 INFO L124 PetriNetUnfolderBase]: 3016/5022 cut-off events. [2024-06-28 01:41:23,667 INFO L125 PetriNetUnfolderBase]: For 186934/186934 co-relation queries the response was YES. [2024-06-28 01:41:23,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39292 conditions, 5022 events. 3016/5022 cut-off events. For 186934/186934 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 32050 event pairs, 702 based on Foata normal form. 2/4977 useless extension candidates. Maximal degree in co-relation 39079. Up to 4310 conditions per place. [2024-06-28 01:41:23,735 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 503 selfloop transitions, 124 changer transitions 0/633 dead transitions. [2024-06-28 01:41:23,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 633 transitions, 12328 flow [2024-06-28 01:41:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:23,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:23,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:41:23,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:41:23,736 INFO L175 Difference]: Start difference. First operand has 471 places, 591 transitions, 10794 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:41:23,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 633 transitions, 12328 flow [2024-06-28 01:41:25,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 633 transitions, 12061 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:25,467 INFO L231 Difference]: Finished difference. Result has 475 places, 593 transitions, 10874 flow [2024-06-28 01:41:25,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10551, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10874, PETRI_PLACES=475, PETRI_TRANSITIONS=593} [2024-06-28 01:41:25,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-28 01:41:25,468 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 593 transitions, 10874 flow [2024-06-28 01:41:25,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:41:25,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:25,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:25,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:41:25,468 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:25,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:25,469 INFO L85 PathProgramCache]: Analyzing trace with hash -714556741, now seen corresponding path program 1 times [2024-06-28 01:41:25,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:25,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118457683] [2024-06-28 01:41:25,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:26,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:26,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118457683] [2024-06-28 01:41:26,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118457683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:26,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:26,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:26,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579643870] [2024-06-28 01:41:26,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:26,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:26,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:26,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:26,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:26,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:26,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 593 transitions, 10874 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:26,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:26,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:26,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:27,998 INFO L124 PetriNetUnfolderBase]: 3096/5162 cut-off events. [2024-06-28 01:41:27,998 INFO L125 PetriNetUnfolderBase]: For 241849/241849 co-relation queries the response was YES. [2024-06-28 01:41:28,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40452 conditions, 5162 events. 3096/5162 cut-off events. For 241849/241849 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 33258 event pairs, 698 based on Foata normal form. 12/5127 useless extension candidates. Maximal degree in co-relation 40237. Up to 4028 conditions per place. [2024-06-28 01:41:28,073 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 478 selfloop transitions, 160 changer transitions 0/644 dead transitions. [2024-06-28 01:41:28,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 644 transitions, 12506 flow [2024-06-28 01:41:28,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:41:28,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:41:28,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:41:28,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 01:41:28,076 INFO L175 Difference]: Start difference. First operand has 475 places, 593 transitions, 10874 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:41:28,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 644 transitions, 12506 flow [2024-06-28 01:41:29,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 644 transitions, 12203 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:29,631 INFO L231 Difference]: Finished difference. Result has 478 places, 595 transitions, 11001 flow [2024-06-28 01:41:29,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10571, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11001, PETRI_PLACES=478, PETRI_TRANSITIONS=595} [2024-06-28 01:41:29,631 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 437 predicate places. [2024-06-28 01:41:29,632 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 595 transitions, 11001 flow [2024-06-28 01:41:29,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:29,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:29,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:41:29,632 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:29,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:29,632 INFO L85 PathProgramCache]: Analyzing trace with hash -722185438, now seen corresponding path program 14 times [2024-06-28 01:41:29,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:29,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192505636] [2024-06-28 01:41:29,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:29,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:30,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:30,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192505636] [2024-06-28 01:41:30,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192505636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:30,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:30,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:30,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123239601] [2024-06-28 01:41:30,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:30,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:30,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:30,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 595 transitions, 11001 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:30,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:30,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:30,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:32,038 INFO L124 PetriNetUnfolderBase]: 3111/5187 cut-off events. [2024-06-28 01:41:32,039 INFO L125 PetriNetUnfolderBase]: For 196472/196472 co-relation queries the response was YES. [2024-06-28 01:41:32,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40817 conditions, 5187 events. 3111/5187 cut-off events. For 196472/196472 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 33412 event pairs, 755 based on Foata normal form. 2/5142 useless extension candidates. Maximal degree in co-relation 40601. Up to 4475 conditions per place. [2024-06-28 01:41:32,116 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 515 selfloop transitions, 116 changer transitions 0/637 dead transitions. [2024-06-28 01:41:32,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 637 transitions, 12523 flow [2024-06-28 01:41:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:41:32,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:41:32,118 INFO L175 Difference]: Start difference. First operand has 478 places, 595 transitions, 11001 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:41:32,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 637 transitions, 12523 flow [2024-06-28 01:41:33,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 637 transitions, 12131 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 01:41:33,957 INFO L231 Difference]: Finished difference. Result has 479 places, 597 transitions, 10920 flow [2024-06-28 01:41:33,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10609, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10920, PETRI_PLACES=479, PETRI_TRANSITIONS=597} [2024-06-28 01:41:33,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 438 predicate places. [2024-06-28 01:41:33,957 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 597 transitions, 10920 flow [2024-06-28 01:41:33,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:33,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:33,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:33,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:41:33,957 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:33,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:33,958 INFO L85 PathProgramCache]: Analyzing trace with hash -722191018, now seen corresponding path program 15 times [2024-06-28 01:41:33,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:33,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585801110] [2024-06-28 01:41:33,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:33,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:34,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585801110] [2024-06-28 01:41:34,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585801110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42926221] [2024-06-28 01:41:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:34,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:34,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:34,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 597 transitions, 10920 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:36,382 INFO L124 PetriNetUnfolderBase]: 3108/5182 cut-off events. [2024-06-28 01:41:36,382 INFO L125 PetriNetUnfolderBase]: For 181650/181650 co-relation queries the response was YES. [2024-06-28 01:41:36,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39976 conditions, 5182 events. 3108/5182 cut-off events. For 181650/181650 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 33416 event pairs, 746 based on Foata normal form. 2/5137 useless extension candidates. Maximal degree in co-relation 39759. Up to 4411 conditions per place. [2024-06-28 01:41:36,461 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 511 selfloop transitions, 120 changer transitions 0/637 dead transitions. [2024-06-28 01:41:36,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 637 transitions, 12370 flow [2024-06-28 01:41:36,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:41:36,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:41:36,462 INFO L175 Difference]: Start difference. First operand has 479 places, 597 transitions, 10920 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:41:36,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 637 transitions, 12370 flow [2024-06-28 01:41:38,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 637 transitions, 12091 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:41:38,201 INFO L231 Difference]: Finished difference. Result has 482 places, 597 transitions, 10886 flow [2024-06-28 01:41:38,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10641, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10886, PETRI_PLACES=482, PETRI_TRANSITIONS=597} [2024-06-28 01:41:38,201 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-28 01:41:38,201 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 597 transitions, 10886 flow [2024-06-28 01:41:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:38,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:38,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:38,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:41:38,202 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:38,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:38,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1263972004, now seen corresponding path program 16 times [2024-06-28 01:41:38,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:38,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607723088] [2024-06-28 01:41:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:38,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:38,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607723088] [2024-06-28 01:41:38,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607723088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:38,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:38,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931671378] [2024-06-28 01:41:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:38,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:38,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:38,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 597 transitions, 10886 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:38,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:38,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:38,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:40,501 INFO L124 PetriNetUnfolderBase]: 3130/5226 cut-off events. [2024-06-28 01:41:40,501 INFO L125 PetriNetUnfolderBase]: For 186464/186464 co-relation queries the response was YES. [2024-06-28 01:41:40,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40219 conditions, 5226 events. 3130/5226 cut-off events. For 186464/186464 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 33882 event pairs, 763 based on Foata normal form. 2/5182 useless extension candidates. Maximal degree in co-relation 40001. Up to 4481 conditions per place. [2024-06-28 01:41:40,574 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 545 selfloop transitions, 89 changer transitions 0/640 dead transitions. [2024-06-28 01:41:40,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 640 transitions, 12462 flow [2024-06-28 01:41:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:41:40,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:41:40,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:41:40,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 01:41:40,575 INFO L175 Difference]: Start difference. First operand has 482 places, 597 transitions, 10886 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:41:40,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 640 transitions, 12462 flow [2024-06-28 01:41:42,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 640 transitions, 12188 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 01:41:42,254 INFO L231 Difference]: Finished difference. Result has 484 places, 605 transitions, 11015 flow [2024-06-28 01:41:42,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10612, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=11015, PETRI_PLACES=484, PETRI_TRANSITIONS=605} [2024-06-28 01:41:42,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 01:41:42,254 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 605 transitions, 11015 flow [2024-06-28 01:41:42,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:42,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:42,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:42,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:41:42,254 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:42,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:42,255 INFO L85 PathProgramCache]: Analyzing trace with hash 457946622, now seen corresponding path program 17 times [2024-06-28 01:41:42,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:42,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770543227] [2024-06-28 01:41:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:42,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:42,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:43,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770543227] [2024-06-28 01:41:43,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770543227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:43,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:43,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858654840] [2024-06-28 01:41:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:43,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:43,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:43,163 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:43,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 605 transitions, 11015 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:43,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:43,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:43,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:44,933 INFO L124 PetriNetUnfolderBase]: 3411/5700 cut-off events. [2024-06-28 01:41:44,933 INFO L125 PetriNetUnfolderBase]: For 214614/214614 co-relation queries the response was YES. [2024-06-28 01:41:44,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45546 conditions, 5700 events. 3411/5700 cut-off events. For 214614/214614 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 37885 event pairs, 826 based on Foata normal form. 2/5652 useless extension candidates. Maximal degree in co-relation 45325. Up to 4891 conditions per place. [2024-06-28 01:41:45,011 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 607 selfloop transitions, 117 changer transitions 0/730 dead transitions. [2024-06-28 01:41:45,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 730 transitions, 15352 flow [2024-06-28 01:41:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:41:45,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:41:45,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:41:45,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:41:45,012 INFO L175 Difference]: Start difference. First operand has 484 places, 605 transitions, 11015 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:41:45,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 730 transitions, 15352 flow [2024-06-28 01:41:47,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 730 transitions, 15075 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:47,114 INFO L231 Difference]: Finished difference. Result has 493 places, 673 transitions, 13207 flow [2024-06-28 01:41:47,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10790, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13207, PETRI_PLACES=493, PETRI_TRANSITIONS=673} [2024-06-28 01:41:47,114 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 01:41:47,114 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 673 transitions, 13207 flow [2024-06-28 01:41:47,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:47,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:47,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:41:47,115 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:47,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 458096352, now seen corresponding path program 18 times [2024-06-28 01:41:47,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:47,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149850330] [2024-06-28 01:41:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:47,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149850330] [2024-06-28 01:41:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149850330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:47,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993327128] [2024-06-28 01:41:47,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:47,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:47,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:47,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:47,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:47,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:47,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 673 transitions, 13207 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:47,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:47,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:47,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:49,663 INFO L124 PetriNetUnfolderBase]: 3429/5741 cut-off events. [2024-06-28 01:41:49,663 INFO L125 PetriNetUnfolderBase]: For 214379/214379 co-relation queries the response was YES. [2024-06-28 01:41:49,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46303 conditions, 5741 events. 3429/5741 cut-off events. For 214379/214379 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 38230 event pairs, 876 based on Foata normal form. 2/5697 useless extension candidates. Maximal degree in co-relation 46077. Up to 4865 conditions per place. [2024-06-28 01:41:49,746 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 539 selfloop transitions, 168 changer transitions 0/713 dead transitions. [2024-06-28 01:41:49,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 713 transitions, 14975 flow [2024-06-28 01:41:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:41:49,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:41:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:41:49,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:41:49,748 INFO L175 Difference]: Start difference. First operand has 493 places, 673 transitions, 13207 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:41:49,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 713 transitions, 14975 flow [2024-06-28 01:41:51,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 713 transitions, 14809 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:51,836 INFO L231 Difference]: Finished difference. Result has 500 places, 677 transitions, 13607 flow [2024-06-28 01:41:51,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13061, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=673, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13607, PETRI_PLACES=500, PETRI_TRANSITIONS=677} [2024-06-28 01:41:51,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-28 01:41:51,837 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 677 transitions, 13607 flow [2024-06-28 01:41:51,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:51,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:51,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:41:51,837 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:51,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,838 INFO L85 PathProgramCache]: Analyzing trace with hash 458090772, now seen corresponding path program 19 times [2024-06-28 01:41:51,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425907874] [2024-06-28 01:41:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:52,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:52,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:52,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425907874] [2024-06-28 01:41:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425907874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:52,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278574107] [2024-06-28 01:41:52,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:52,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:52,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:52,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:52,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:52,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 677 transitions, 13607 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:52,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:52,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:52,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:54,564 INFO L124 PetriNetUnfolderBase]: 3437/5752 cut-off events. [2024-06-28 01:41:54,564 INFO L125 PetriNetUnfolderBase]: For 205803/205803 co-relation queries the response was YES. [2024-06-28 01:41:54,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46828 conditions, 5752 events. 3437/5752 cut-off events. For 205803/205803 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 38366 event pairs, 811 based on Foata normal form. 2/5708 useless extension candidates. Maximal degree in co-relation 46600. Up to 4667 conditions per place. [2024-06-28 01:41:54,648 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 563 selfloop transitions, 157 changer transitions 0/726 dead transitions. [2024-06-28 01:41:54,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 726 transitions, 15598 flow [2024-06-28 01:41:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:41:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:41:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:41:54,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:41:54,649 INFO L175 Difference]: Start difference. First operand has 500 places, 677 transitions, 13607 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:41:54,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 726 transitions, 15598 flow [2024-06-28 01:41:56,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 726 transitions, 14993 flow, removed 137 selfloop flow, removed 9 redundant places. [2024-06-28 01:41:56,719 INFO L231 Difference]: Finished difference. Result has 504 places, 688 transitions, 13818 flow [2024-06-28 01:41:56,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13119, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13818, PETRI_PLACES=504, PETRI_TRANSITIONS=688} [2024-06-28 01:41:56,720 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 463 predicate places. [2024-06-28 01:41:56,720 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 688 transitions, 13818 flow [2024-06-28 01:41:56,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:56,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:56,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:56,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:41:56,720 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:56,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 458096569, now seen corresponding path program 3 times [2024-06-28 01:41:56,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84443740] [2024-06-28 01:41:56,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:56,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:56,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84443740] [2024-06-28 01:41:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84443740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:57,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:57,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:41:57,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817065360] [2024-06-28 01:41:57,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:57,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:41:57,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:57,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:41:57,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:41:57,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:41:57,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 688 transitions, 13818 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:41:57,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:57,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:41:57,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:59,382 INFO L124 PetriNetUnfolderBase]: 3434/5752 cut-off events. [2024-06-28 01:41:59,382 INFO L125 PetriNetUnfolderBase]: For 193295/193295 co-relation queries the response was YES. [2024-06-28 01:41:59,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46836 conditions, 5752 events. 3434/5752 cut-off events. For 193295/193295 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 38362 event pairs, 877 based on Foata normal form. 1/5707 useless extension candidates. Maximal degree in co-relation 46605. Up to 4843 conditions per place. [2024-06-28 01:41:59,470 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 539 selfloop transitions, 183 changer transitions 0/728 dead transitions. [2024-06-28 01:41:59,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 728 transitions, 15562 flow [2024-06-28 01:41:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:41:59,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:41:59,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:41:59,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:41:59,471 INFO L175 Difference]: Start difference. First operand has 504 places, 688 transitions, 13818 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:41:59,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 728 transitions, 15562 flow [2024-06-28 01:42:01,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 728 transitions, 15310 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:01,633 INFO L231 Difference]: Finished difference. Result has 508 places, 692 transitions, 14116 flow [2024-06-28 01:42:01,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13586, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14116, PETRI_PLACES=508, PETRI_TRANSITIONS=692} [2024-06-28 01:42:01,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-28 01:42:01,633 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 692 transitions, 14116 flow [2024-06-28 01:42:01,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:01,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:42:01,634 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:01,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:01,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1137180000, now seen corresponding path program 20 times [2024-06-28 01:42:01,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:01,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181324795] [2024-06-28 01:42:01,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:01,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:02,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181324795] [2024-06-28 01:42:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181324795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:02,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:02,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:02,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415407367] [2024-06-28 01:42:02,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:02,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:02,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:02,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:02,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:02,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:02,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 692 transitions, 14116 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:02,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:02,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:02,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:04,374 INFO L124 PetriNetUnfolderBase]: 3449/5765 cut-off events. [2024-06-28 01:42:04,374 INFO L125 PetriNetUnfolderBase]: For 211951/211951 co-relation queries the response was YES. [2024-06-28 01:42:04,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47399 conditions, 5765 events. 3449/5765 cut-off events. For 211951/211951 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 38386 event pairs, 751 based on Foata normal form. 2/5720 useless extension candidates. Maximal degree in co-relation 47168. Up to 4643 conditions per place. [2024-06-28 01:42:04,462 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 541 selfloop transitions, 183 changer transitions 0/730 dead transitions. [2024-06-28 01:42:04,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 730 transitions, 15838 flow [2024-06-28 01:42:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:04,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:04,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:42:04,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:42:04,463 INFO L175 Difference]: Start difference. First operand has 508 places, 692 transitions, 14116 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:42:04,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 730 transitions, 15838 flow [2024-06-28 01:42:06,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 730 transitions, 15538 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:06,472 INFO L231 Difference]: Finished difference. Result has 511 places, 694 transitions, 14290 flow [2024-06-28 01:42:06,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13816, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14290, PETRI_PLACES=511, PETRI_TRANSITIONS=694} [2024-06-28 01:42:06,473 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-28 01:42:06,473 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 694 transitions, 14290 flow [2024-06-28 01:42:06,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:06,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:42:06,474 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:06,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:06,474 INFO L85 PathProgramCache]: Analyzing trace with hash -1137185580, now seen corresponding path program 21 times [2024-06-28 01:42:06,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:06,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833438978] [2024-06-28 01:42:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:06,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:07,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:07,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:07,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833438978] [2024-06-28 01:42:07,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833438978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:07,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:07,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:07,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554554298] [2024-06-28 01:42:07,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:07,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:07,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:07,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:07,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:07,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:07,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 694 transitions, 14290 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:07,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:07,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:07,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:09,168 INFO L124 PetriNetUnfolderBase]: 3464/5790 cut-off events. [2024-06-28 01:42:09,169 INFO L125 PetriNetUnfolderBase]: For 215813/215813 co-relation queries the response was YES. [2024-06-28 01:42:09,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47817 conditions, 5790 events. 3464/5790 cut-off events. For 215813/215813 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 38622 event pairs, 738 based on Foata normal form. 2/5745 useless extension candidates. Maximal degree in co-relation 47585. Up to 4586 conditions per place. [2024-06-28 01:42:09,254 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 539 selfloop transitions, 187 changer transitions 0/732 dead transitions. [2024-06-28 01:42:09,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 732 transitions, 16018 flow [2024-06-28 01:42:09,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:09,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:42:09,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:42:09,256 INFO L175 Difference]: Start difference. First operand has 511 places, 694 transitions, 14290 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:42:09,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 732 transitions, 16018 flow [2024-06-28 01:42:11,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 732 transitions, 15504 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:11,266 INFO L231 Difference]: Finished difference. Result has 512 places, 696 transitions, 14262 flow [2024-06-28 01:42:11,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13780, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14262, PETRI_PLACES=512, PETRI_TRANSITIONS=696} [2024-06-28 01:42:11,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-28 01:42:11,267 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 696 transitions, 14262 flow [2024-06-28 01:42:11,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:11,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:11,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:11,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:42:11,267 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:11,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash -344871154, now seen corresponding path program 22 times [2024-06-28 01:42:11,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:11,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721820469] [2024-06-28 01:42:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:11,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:11,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721820469] [2024-06-28 01:42:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721820469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614342037] [2024-06-28 01:42:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:12,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:12,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 696 transitions, 14262 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:12,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:12,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:12,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:13,954 INFO L124 PetriNetUnfolderBase]: 3479/5815 cut-off events. [2024-06-28 01:42:13,954 INFO L125 PetriNetUnfolderBase]: For 206165/206165 co-relation queries the response was YES. [2024-06-28 01:42:14,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47884 conditions, 5815 events. 3479/5815 cut-off events. For 206165/206165 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 38919 event pairs, 663 based on Foata normal form. 2/5770 useless extension candidates. Maximal degree in co-relation 47651. Up to 4693 conditions per place. [2024-06-28 01:42:14,044 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 523 selfloop transitions, 205 changer transitions 0/734 dead transitions. [2024-06-28 01:42:14,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 734 transitions, 15996 flow [2024-06-28 01:42:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:14,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:42:14,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:42:14,045 INFO L175 Difference]: Start difference. First operand has 512 places, 696 transitions, 14262 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:42:14,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 734 transitions, 15996 flow [2024-06-28 01:42:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 512 places, 734 transitions, 15527 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:16,278 INFO L231 Difference]: Finished difference. Result has 513 places, 698 transitions, 14315 flow [2024-06-28 01:42:16,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13797, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14315, PETRI_PLACES=513, PETRI_TRANSITIONS=698} [2024-06-28 01:42:16,278 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 472 predicate places. [2024-06-28 01:42:16,279 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 698 transitions, 14315 flow [2024-06-28 01:42:16,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:16,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:16,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:42:16,279 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:16,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash -937878210, now seen corresponding path program 23 times [2024-06-28 01:42:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908404164] [2024-06-28 01:42:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:17,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:17,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:17,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908404164] [2024-06-28 01:42:17,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908404164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:17,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043766398] [2024-06-28 01:42:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:17,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:17,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 698 transitions, 14315 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:17,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:17,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:17,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:19,048 INFO L124 PetriNetUnfolderBase]: 3494/5840 cut-off events. [2024-06-28 01:42:19,049 INFO L125 PetriNetUnfolderBase]: For 203164/203164 co-relation queries the response was YES. [2024-06-28 01:42:19,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48154 conditions, 5840 events. 3494/5840 cut-off events. For 203164/203164 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 39056 event pairs, 668 based on Foata normal form. 2/5795 useless extension candidates. Maximal degree in co-relation 47921. Up to 4718 conditions per place. [2024-06-28 01:42:19,137 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 536 selfloop transitions, 194 changer transitions 0/736 dead transitions. [2024-06-28 01:42:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 736 transitions, 16053 flow [2024-06-28 01:42:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:19,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:42:19,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:42:19,138 INFO L175 Difference]: Start difference. First operand has 513 places, 698 transitions, 14315 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:42:19,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 736 transitions, 16053 flow [2024-06-28 01:42:21,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 736 transitions, 15642 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:21,449 INFO L231 Difference]: Finished difference. Result has 514 places, 700 transitions, 14404 flow [2024-06-28 01:42:21,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=13904, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14404, PETRI_PLACES=514, PETRI_TRANSITIONS=700} [2024-06-28 01:42:21,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-28 01:42:21,449 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 700 transitions, 14404 flow [2024-06-28 01:42:21,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:21,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:21,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:21,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:42:21,450 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:21,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:21,450 INFO L85 PathProgramCache]: Analyzing trace with hash -352228384, now seen corresponding path program 24 times [2024-06-28 01:42:21,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:21,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085641085] [2024-06-28 01:42:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:21,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:22,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:22,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:22,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085641085] [2024-06-28 01:42:22,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085641085] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:22,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:22,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:22,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635078355] [2024-06-28 01:42:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:22,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:22,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:22,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:22,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:22,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:22,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 700 transitions, 14404 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:22,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:22,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:22,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:24,118 INFO L124 PetriNetUnfolderBase]: 3509/5865 cut-off events. [2024-06-28 01:42:24,118 INFO L125 PetriNetUnfolderBase]: For 206615/206615 co-relation queries the response was YES. [2024-06-28 01:42:24,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48328 conditions, 5865 events. 3509/5865 cut-off events. For 206615/206615 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 39313 event pairs, 667 based on Foata normal form. 2/5820 useless extension candidates. Maximal degree in co-relation 48096. Up to 4625 conditions per place. [2024-06-28 01:42:24,209 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 530 selfloop transitions, 202 changer transitions 0/738 dead transitions. [2024-06-28 01:42:24,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 738 transitions, 16148 flow [2024-06-28 01:42:24,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:24,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:24,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:42:24,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:42:24,211 INFO L175 Difference]: Start difference. First operand has 514 places, 700 transitions, 14404 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:42:24,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 738 transitions, 16148 flow [2024-06-28 01:42:26,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 738 transitions, 15780 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:26,599 INFO L231 Difference]: Finished difference. Result has 516 places, 702 transitions, 14556 flow [2024-06-28 01:42:26,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14036, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14556, PETRI_PLACES=516, PETRI_TRANSITIONS=702} [2024-06-28 01:42:26,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 475 predicate places. [2024-06-28 01:42:26,600 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 702 transitions, 14556 flow [2024-06-28 01:42:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:26,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:26,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:26,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:42:26,600 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:26,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:26,600 INFO L85 PathProgramCache]: Analyzing trace with hash -930249513, now seen corresponding path program 2 times [2024-06-28 01:42:26,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:26,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897487985] [2024-06-28 01:42:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:26,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:26,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:27,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:27,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897487985] [2024-06-28 01:42:27,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897487985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:27,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:27,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:27,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827231414] [2024-06-28 01:42:27,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:27,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:27,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:27,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:27,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:27,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:27,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 702 transitions, 14556 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:27,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:27,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:27,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:29,361 INFO L124 PetriNetUnfolderBase]: 3589/6005 cut-off events. [2024-06-28 01:42:29,362 INFO L125 PetriNetUnfolderBase]: For 270641/270641 co-relation queries the response was YES. [2024-06-28 01:42:29,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49467 conditions, 6005 events. 3589/6005 cut-off events. For 270641/270641 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 40429 event pairs, 650 based on Foata normal form. 12/5970 useless extension candidates. Maximal degree in co-relation 49235. Up to 4107 conditions per place. [2024-06-28 01:42:29,452 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 477 selfloop transitions, 266 changer transitions 0/749 dead transitions. [2024-06-28 01:42:29,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 749 transitions, 16398 flow [2024-06-28 01:42:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:42:29,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:42:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:42:29,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:42:29,453 INFO L175 Difference]: Start difference. First operand has 516 places, 702 transitions, 14556 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:42:29,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 749 transitions, 16398 flow [2024-06-28 01:42:31,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 749 transitions, 15899 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:31,333 INFO L231 Difference]: Finished difference. Result has 518 places, 704 transitions, 14715 flow [2024-06-28 01:42:31,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14057, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=264, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14715, PETRI_PLACES=518, PETRI_TRANSITIONS=704} [2024-06-28 01:42:31,333 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 477 predicate places. [2024-06-28 01:42:31,333 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 704 transitions, 14715 flow [2024-06-28 01:42:31,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:31,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:31,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:31,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:42:31,334 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:31,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:31,334 INFO L85 PathProgramCache]: Analyzing trace with hash -551674324, now seen corresponding path program 25 times [2024-06-28 01:42:31,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:31,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590839862] [2024-06-28 01:42:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:31,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:31,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:32,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:32,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590839862] [2024-06-28 01:42:32,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590839862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:32,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:32,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:32,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897312595] [2024-06-28 01:42:32,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:32,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:32,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:32,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:32,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:32,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 704 transitions, 14715 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:32,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:32,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:32,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:34,060 INFO L124 PetriNetUnfolderBase]: 3604/6030 cut-off events. [2024-06-28 01:42:34,060 INFO L125 PetriNetUnfolderBase]: For 229761/229761 co-relation queries the response was YES. [2024-06-28 01:42:34,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50031 conditions, 6030 events. 3604/6030 cut-off events. For 229761/229761 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 40528 event pairs, 766 based on Foata normal form. 2/5985 useless extension candidates. Maximal degree in co-relation 49799. Up to 4544 conditions per place. [2024-06-28 01:42:34,152 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 533 selfloop transitions, 203 changer transitions 0/742 dead transitions. [2024-06-28 01:42:34,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 742 transitions, 16471 flow [2024-06-28 01:42:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:34,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:34,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:42:34,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:42:34,153 INFO L175 Difference]: Start difference. First operand has 518 places, 704 transitions, 14715 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:42:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 742 transitions, 16471 flow [2024-06-28 01:42:36,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 742 transitions, 15941 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:36,288 INFO L231 Difference]: Finished difference. Result has 520 places, 706 transitions, 14713 flow [2024-06-28 01:42:36,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14187, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14713, PETRI_PLACES=520, PETRI_TRANSITIONS=706} [2024-06-28 01:42:36,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 479 predicate places. [2024-06-28 01:42:36,288 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 706 transitions, 14713 flow [2024-06-28 01:42:36,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:36,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:36,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:36,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:42:36,289 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:36,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:36,289 INFO L85 PathProgramCache]: Analyzing trace with hash 40202760, now seen corresponding path program 26 times [2024-06-28 01:42:36,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:36,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71745569] [2024-06-28 01:42:36,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:36,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:36,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71745569] [2024-06-28 01:42:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71745569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:36,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:36,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712995675] [2024-06-28 01:42:36,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:36,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:36,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:36,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:36,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:37,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:37,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 706 transitions, 14713 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:42:37,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:37,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:37,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:38,886 INFO L124 PetriNetUnfolderBase]: 3619/6056 cut-off events. [2024-06-28 01:42:38,886 INFO L125 PetriNetUnfolderBase]: For 220590/220590 co-relation queries the response was YES. [2024-06-28 01:42:38,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49732 conditions, 6056 events. 3619/6056 cut-off events. For 220590/220590 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 40792 event pairs, 580 based on Foata normal form. 2/6007 useless extension candidates. Maximal degree in co-relation 49499. Up to 4656 conditions per place. [2024-06-28 01:42:38,982 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 531 selfloop transitions, 207 changer transitions 0/744 dead transitions. [2024-06-28 01:42:38,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 744 transitions, 16489 flow [2024-06-28 01:42:38,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:38,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:38,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:42:38,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:42:38,983 INFO L175 Difference]: Start difference. First operand has 520 places, 706 transitions, 14713 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:42:38,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 744 transitions, 16489 flow [2024-06-28 01:42:41,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 744 transitions, 15984 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:41,238 INFO L231 Difference]: Finished difference. Result has 521 places, 708 transitions, 14743 flow [2024-06-28 01:42:41,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14208, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14743, PETRI_PLACES=521, PETRI_TRANSITIONS=708} [2024-06-28 01:42:41,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-28 01:42:41,239 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 708 transitions, 14743 flow [2024-06-28 01:42:41,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:42:41,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:41,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:41,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:42:41,239 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:41,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:41,240 INFO L85 PathProgramCache]: Analyzing trace with hash 40197180, now seen corresponding path program 27 times [2024-06-28 01:42:41,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:41,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325331458] [2024-06-28 01:42:41,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:41,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:41,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325331458] [2024-06-28 01:42:41,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325331458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:41,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:41,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476468258] [2024-06-28 01:42:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:41,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:41,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:41,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:41,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:41,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 708 transitions, 14743 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:42:41,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:41,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:41,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:43,910 INFO L124 PetriNetUnfolderBase]: 3652/6110 cut-off events. [2024-06-28 01:42:43,911 INFO L125 PetriNetUnfolderBase]: For 236990/236990 co-relation queries the response was YES. [2024-06-28 01:42:43,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50490 conditions, 6110 events. 3652/6110 cut-off events. For 236990/236990 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 41209 event pairs, 582 based on Foata normal form. 2/6062 useless extension candidates. Maximal degree in co-relation 50257. Up to 4649 conditions per place. [2024-06-28 01:42:44,004 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 532 selfloop transitions, 211 changer transitions 0/749 dead transitions. [2024-06-28 01:42:44,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 749 transitions, 16863 flow [2024-06-28 01:42:44,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:42:44,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-28 01:42:44,006 INFO L175 Difference]: Start difference. First operand has 521 places, 708 transitions, 14743 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:42:44,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 749 transitions, 16863 flow [2024-06-28 01:42:46,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 749 transitions, 16344 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:46,089 INFO L231 Difference]: Finished difference. Result has 523 places, 712 transitions, 14887 flow [2024-06-28 01:42:46,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14224, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=708, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14887, PETRI_PLACES=523, PETRI_TRANSITIONS=712} [2024-06-28 01:42:46,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 482 predicate places. [2024-06-28 01:42:46,090 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 712 transitions, 14887 flow [2024-06-28 01:42:46,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 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) [2024-06-28 01:42:46,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:46,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:46,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:42:46,090 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:46,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1366405536, now seen corresponding path program 28 times [2024-06-28 01:42:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:46,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803893939] [2024-06-28 01:42:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:46,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:46,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:46,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803893939] [2024-06-28 01:42:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803893939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:46,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:46,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746127806] [2024-06-28 01:42:46,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:46,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:46,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:46,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:46,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:46,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:46,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 712 transitions, 14887 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:46,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:46,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:46,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:48,747 INFO L124 PetriNetUnfolderBase]: 3649/6105 cut-off events. [2024-06-28 01:42:48,747 INFO L125 PetriNetUnfolderBase]: For 225286/225286 co-relation queries the response was YES. [2024-06-28 01:42:48,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50054 conditions, 6105 events. 3649/6105 cut-off events. For 225286/225286 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 41144 event pairs, 581 based on Foata normal form. 2/6057 useless extension candidates. Maximal degree in co-relation 49820. Up to 4706 conditions per place. [2024-06-28 01:42:48,845 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 534 selfloop transitions, 208 changer transitions 0/748 dead transitions. [2024-06-28 01:42:48,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 748 transitions, 16559 flow [2024-06-28 01:42:48,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:48,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:48,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:42:48,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:42:48,846 INFO L175 Difference]: Start difference. First operand has 523 places, 712 transitions, 14887 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:42:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 748 transitions, 16559 flow [2024-06-28 01:42:51,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 748 transitions, 16097 flow, removed 109 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:51,177 INFO L231 Difference]: Finished difference. Result has 527 places, 712 transitions, 14846 flow [2024-06-28 01:42:51,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14425, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14846, PETRI_PLACES=527, PETRI_TRANSITIONS=712} [2024-06-28 01:42:51,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 486 predicate places. [2024-06-28 01:42:51,178 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 712 transitions, 14846 flow [2024-06-28 01:42:51,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:51,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:51,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:51,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:42:51,178 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:51,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:51,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1366128489, now seen corresponding path program 3 times [2024-06-28 01:42:51,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:51,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928955841] [2024-06-28 01:42:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:51,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:51,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:51,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:51,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928955841] [2024-06-28 01:42:51,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928955841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:51,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:51,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:51,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911194009] [2024-06-28 01:42:51,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:51,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:51,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:52,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:52,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 712 transitions, 14846 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:52,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:52,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:52,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:54,071 INFO L124 PetriNetUnfolderBase]: 3729/6245 cut-off events. [2024-06-28 01:42:54,071 INFO L125 PetriNetUnfolderBase]: For 288942/288942 co-relation queries the response was YES. [2024-06-28 01:42:54,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51345 conditions, 6245 events. 3729/6245 cut-off events. For 288942/288942 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 42281 event pairs, 681 based on Foata normal form. 12/6207 useless extension candidates. Maximal degree in co-relation 51109. Up to 4050 conditions per place. [2024-06-28 01:42:54,173 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 475 selfloop transitions, 278 changer transitions 0/759 dead transitions. [2024-06-28 01:42:54,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 759 transitions, 16724 flow [2024-06-28 01:42:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:42:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:42:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-28 01:42:54,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-28 01:42:54,175 INFO L175 Difference]: Start difference. First operand has 527 places, 712 transitions, 14846 flow. Second operand 11 states and 197 transitions. [2024-06-28 01:42:54,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 759 transitions, 16724 flow [2024-06-28 01:42:56,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 759 transitions, 16297 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:56,754 INFO L231 Difference]: Finished difference. Result has 529 places, 714 transitions, 15103 flow [2024-06-28 01:42:56,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14419, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15103, PETRI_PLACES=529, PETRI_TRANSITIONS=714} [2024-06-28 01:42:56,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-28 01:42:56,754 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 714 transitions, 15103 flow [2024-06-28 01:42:56,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:56,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:56,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:56,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:42:56,755 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:56,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:56,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1573058976, now seen corresponding path program 29 times [2024-06-28 01:42:56,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:56,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868695148] [2024-06-28 01:42:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:56,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868695148] [2024-06-28 01:42:57,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868695148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:57,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:57,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:42:57,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817552188] [2024-06-28 01:42:57,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:57,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:42:57,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:57,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:42:57,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:42:57,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:42:57,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 714 transitions, 15103 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:42:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:42:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:59,611 INFO L124 PetriNetUnfolderBase]: 3744/6270 cut-off events. [2024-06-28 01:42:59,611 INFO L125 PetriNetUnfolderBase]: For 237681/237681 co-relation queries the response was YES. [2024-06-28 01:42:59,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52068 conditions, 6270 events. 3744/6270 cut-off events. For 237681/237681 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 42476 event pairs, 600 based on Foata normal form. 2/6222 useless extension candidates. Maximal degree in co-relation 51831. Up to 4871 conditions per place. [2024-06-28 01:42:59,713 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 532 selfloop transitions, 213 changer transitions 0/751 dead transitions. [2024-06-28 01:42:59,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 751 transitions, 16899 flow [2024-06-28 01:42:59,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:59,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:59,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:42:59,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:42:59,714 INFO L175 Difference]: Start difference. First operand has 529 places, 714 transitions, 15103 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:42:59,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 751 transitions, 16899 flow [2024-06-28 01:43:02,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 751 transitions, 16253 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:02,219 INFO L231 Difference]: Finished difference. Result has 530 places, 716 transitions, 15014 flow [2024-06-28 01:43:02,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14457, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15014, PETRI_PLACES=530, PETRI_TRANSITIONS=716} [2024-06-28 01:43:02,220 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-28 01:43:02,220 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 716 transitions, 15014 flow [2024-06-28 01:43:02,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:02,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:02,220 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:02,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:43:02,220 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:02,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:02,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1573064556, now seen corresponding path program 30 times [2024-06-28 01:43:02,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:02,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935923891] [2024-06-28 01:43:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935923891] [2024-06-28 01:43:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935923891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:02,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343679011] [2024-06-28 01:43:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:02,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:02,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:03,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:03,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 716 transitions, 15014 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:03,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:03,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:05,145 INFO L124 PetriNetUnfolderBase]: 3759/6295 cut-off events. [2024-06-28 01:43:05,145 INFO L125 PetriNetUnfolderBase]: For 235616/235616 co-relation queries the response was YES. [2024-06-28 01:43:05,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51705 conditions, 6295 events. 3759/6295 cut-off events. For 235616/235616 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 42677 event pairs, 600 based on Foata normal form. 2/6247 useless extension candidates. Maximal degree in co-relation 51467. Up to 4855 conditions per place. [2024-06-28 01:43:05,249 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 532 selfloop transitions, 215 changer transitions 0/753 dead transitions. [2024-06-28 01:43:05,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 753 transitions, 16816 flow [2024-06-28 01:43:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:05,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:05,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:43:05,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:43:05,250 INFO L175 Difference]: Start difference. First operand has 530 places, 716 transitions, 15014 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:43:05,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 753 transitions, 16816 flow [2024-06-28 01:43:07,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 753 transitions, 16275 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:07,607 INFO L231 Difference]: Finished difference. Result has 532 places, 718 transitions, 15038 flow [2024-06-28 01:43:07,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15038, PETRI_PLACES=532, PETRI_TRANSITIONS=718} [2024-06-28 01:43:07,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 491 predicate places. [2024-06-28 01:43:07,608 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 718 transitions, 15038 flow [2024-06-28 01:43:07,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:07,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:07,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:43:07,608 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:07,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1573208706, now seen corresponding path program 31 times [2024-06-28 01:43:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:07,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142657827] [2024-06-28 01:43:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:08,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:08,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:08,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142657827] [2024-06-28 01:43:08,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142657827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:08,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:08,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:08,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251027672] [2024-06-28 01:43:08,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:08,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:08,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:08,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:08,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 718 transitions, 15038 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:08,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:08,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:08,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:10,452 INFO L124 PetriNetUnfolderBase]: 3777/6319 cut-off events. [2024-06-28 01:43:10,452 INFO L125 PetriNetUnfolderBase]: For 241355/241355 co-relation queries the response was YES. [2024-06-28 01:43:10,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52009 conditions, 6319 events. 3777/6319 cut-off events. For 241355/241355 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 42840 event pairs, 606 based on Foata normal form. 2/6273 useless extension candidates. Maximal degree in co-relation 51770. Up to 4685 conditions per place. [2024-06-28 01:43:10,553 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 527 selfloop transitions, 225 changer transitions 0/758 dead transitions. [2024-06-28 01:43:10,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 758 transitions, 17208 flow [2024-06-28 01:43:10,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:43:10,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:43:10,554 INFO L175 Difference]: Start difference. First operand has 532 places, 718 transitions, 15038 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:43:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 758 transitions, 17208 flow [2024-06-28 01:43:13,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 758 transitions, 16659 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:13,342 INFO L231 Difference]: Finished difference. Result has 534 places, 722 transitions, 15208 flow [2024-06-28 01:43:13,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14489, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15208, PETRI_PLACES=534, PETRI_TRANSITIONS=722} [2024-06-28 01:43:13,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 493 predicate places. [2024-06-28 01:43:13,343 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 722 transitions, 15208 flow [2024-06-28 01:43:13,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:13,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:13,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:43:13,344 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:13,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash 317448702, now seen corresponding path program 32 times [2024-06-28 01:43:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:13,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973607432] [2024-06-28 01:43:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:13,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:13,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:14,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:14,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:14,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973607432] [2024-06-28 01:43:14,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973607432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:14,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:14,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:14,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275506944] [2024-06-28 01:43:14,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:14,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:14,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:14,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:14,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:14,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 722 transitions, 15208 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:14,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:14,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:14,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:16,399 INFO L124 PetriNetUnfolderBase]: 3792/6344 cut-off events. [2024-06-28 01:43:16,399 INFO L125 PetriNetUnfolderBase]: For 236340/236340 co-relation queries the response was YES. [2024-06-28 01:43:16,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52230 conditions, 6344 events. 3792/6344 cut-off events. For 236340/236340 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 43138 event pairs, 477 based on Foata normal form. 2/6298 useless extension candidates. Maximal degree in co-relation 51990. Up to 4951 conditions per place. [2024-06-28 01:43:16,484 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 529 selfloop transitions, 225 changer transitions 0/760 dead transitions. [2024-06-28 01:43:16,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 760 transitions, 17038 flow [2024-06-28 01:43:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:16,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:43:16,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:43:16,485 INFO L175 Difference]: Start difference. First operand has 534 places, 722 transitions, 15208 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:43:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 760 transitions, 17038 flow [2024-06-28 01:43:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 760 transitions, 16588 flow, removed 97 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:19,168 INFO L231 Difference]: Finished difference. Result has 538 places, 724 transitions, 15351 flow [2024-06-28 01:43:19,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14790, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15351, PETRI_PLACES=538, PETRI_TRANSITIONS=724} [2024-06-28 01:43:19,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-28 01:43:19,169 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 724 transitions, 15351 flow [2024-06-28 01:43:19,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:19,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:19,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:19,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:43:19,169 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:19,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:19,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1528463389, now seen corresponding path program 4 times [2024-06-28 01:43:19,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:19,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466984277] [2024-06-28 01:43:19,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:19,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:19,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466984277] [2024-06-28 01:43:19,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466984277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:19,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302584688] [2024-06-28 01:43:19,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:19,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:20,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:20,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 724 transitions, 15351 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:20,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:20,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:20,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:22,127 INFO L124 PetriNetUnfolderBase]: 3872/6484 cut-off events. [2024-06-28 01:43:22,128 INFO L125 PetriNetUnfolderBase]: For 305042/305042 co-relation queries the response was YES. [2024-06-28 01:43:22,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53678 conditions, 6484 events. 3872/6484 cut-off events. For 305042/305042 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 44251 event pairs, 512 based on Foata normal form. 12/6448 useless extension candidates. Maximal degree in co-relation 53436. Up to 4305 conditions per place. [2024-06-28 01:43:22,223 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 471 selfloop transitions, 294 changer transitions 0/771 dead transitions. [2024-06-28 01:43:22,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 771 transitions, 17261 flow [2024-06-28 01:43:22,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:43:22,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-28 01:43:22,224 INFO L175 Difference]: Start difference. First operand has 538 places, 724 transitions, 15351 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:43:22,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 771 transitions, 17261 flow [2024-06-28 01:43:24,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 771 transitions, 16720 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:24,907 INFO L231 Difference]: Finished difference. Result has 541 places, 726 transitions, 15534 flow [2024-06-28 01:43:24,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14810, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15534, PETRI_PLACES=541, PETRI_TRANSITIONS=726} [2024-06-28 01:43:24,908 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 500 predicate places. [2024-06-28 01:43:24,908 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 726 transitions, 15534 flow [2024-06-28 01:43:24,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:24,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:24,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:24,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:43:24,909 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:24,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:24,909 INFO L85 PathProgramCache]: Analyzing trace with hash 310097052, now seen corresponding path program 33 times [2024-06-28 01:43:24,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:24,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219915399] [2024-06-28 01:43:24,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:24,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:25,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219915399] [2024-06-28 01:43:25,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219915399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:25,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:25,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232931064] [2024-06-28 01:43:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:25,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:25,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:25,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:25,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:25,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 726 transitions, 15534 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:25,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:25,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:25,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:27,979 INFO L124 PetriNetUnfolderBase]: 3887/6509 cut-off events. [2024-06-28 01:43:27,980 INFO L125 PetriNetUnfolderBase]: For 245409/245409 co-relation queries the response was YES. [2024-06-28 01:43:28,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54150 conditions, 6509 events. 3887/6509 cut-off events. For 245409/245409 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 44506 event pairs, 487 based on Foata normal form. 2/6463 useless extension candidates. Maximal degree in co-relation 53907. Up to 5116 conditions per place. [2024-06-28 01:43:28,083 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 530 selfloop transitions, 227 changer transitions 0/763 dead transitions. [2024-06-28 01:43:28,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 763 transitions, 17338 flow [2024-06-28 01:43:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:28,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:28,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:43:28,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:28,084 INFO L175 Difference]: Start difference. First operand has 541 places, 726 transitions, 15534 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:43:28,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 763 transitions, 17338 flow [2024-06-28 01:43:31,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 763 transitions, 16652 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:31,130 INFO L231 Difference]: Finished difference. Result has 542 places, 728 transitions, 15417 flow [2024-06-28 01:43:31,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14848, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15417, PETRI_PLACES=542, PETRI_TRANSITIONS=728} [2024-06-28 01:43:31,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-28 01:43:31,131 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 728 transitions, 15417 flow [2024-06-28 01:43:31,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:31,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:43:31,131 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:31,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,131 INFO L85 PathProgramCache]: Analyzing trace with hash 310091472, now seen corresponding path program 34 times [2024-06-28 01:43:31,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836407850] [2024-06-28 01:43:31,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:31,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:31,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836407850] [2024-06-28 01:43:31,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836407850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:31,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:31,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469437922] [2024-06-28 01:43:31,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:31,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:31,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:31,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:31,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:31,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:31,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 728 transitions, 15417 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:31,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:31,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:31,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:34,056 INFO L124 PetriNetUnfolderBase]: 3902/6534 cut-off events. [2024-06-28 01:43:34,056 INFO L125 PetriNetUnfolderBase]: For 239677/239677 co-relation queries the response was YES. [2024-06-28 01:43:34,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53683 conditions, 6534 events. 3902/6534 cut-off events. For 239677/239677 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 44691 event pairs, 502 based on Foata normal form. 2/6488 useless extension candidates. Maximal degree in co-relation 53439. Up to 5061 conditions per place. [2024-06-28 01:43:34,161 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 527 selfloop transitions, 233 changer transitions 0/766 dead transitions. [2024-06-28 01:43:34,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 766 transitions, 17463 flow [2024-06-28 01:43:34,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-28 01:43:34,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-28 01:43:34,163 INFO L175 Difference]: Start difference. First operand has 542 places, 728 transitions, 15417 flow. Second operand 10 states and 171 transitions. [2024-06-28 01:43:34,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 766 transitions, 17463 flow [2024-06-28 01:43:36,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 766 transitions, 16914 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:36,878 INFO L231 Difference]: Finished difference. Result has 544 places, 730 transitions, 15449 flow [2024-06-28 01:43:36,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14868, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15449, PETRI_PLACES=544, PETRI_TRANSITIONS=730} [2024-06-28 01:43:36,878 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-28 01:43:36,878 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 730 transitions, 15449 flow [2024-06-28 01:43:36,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:36,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:36,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:36,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:43:36,879 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:36,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash 565610080, now seen corresponding path program 35 times [2024-06-28 01:43:36,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:36,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574186044] [2024-06-28 01:43:36,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:36,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:37,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:37,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574186044] [2024-06-28 01:43:37,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574186044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:37,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:37,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:37,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556253885] [2024-06-28 01:43:37,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:37,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:37,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:37,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:37,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:37,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:37,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 730 transitions, 15449 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:37,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:37,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:37,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:39,741 INFO L124 PetriNetUnfolderBase]: 3899/6529 cut-off events. [2024-06-28 01:43:39,741 INFO L125 PetriNetUnfolderBase]: For 225532/225532 co-relation queries the response was YES. [2024-06-28 01:43:39,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53227 conditions, 6529 events. 3899/6529 cut-off events. For 225532/225532 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 44700 event pairs, 501 based on Foata normal form. 2/6483 useless extension candidates. Maximal degree in co-relation 52982. Up to 5136 conditions per place. [2024-06-28 01:43:39,854 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 512 selfloop transitions, 247 changer transitions 0/765 dead transitions. [2024-06-28 01:43:39,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 765 transitions, 17151 flow [2024-06-28 01:43:39,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:39,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:39,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:43:39,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:43:39,855 INFO L175 Difference]: Start difference. First operand has 544 places, 730 transitions, 15449 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:43:39,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 765 transitions, 17151 flow [2024-06-28 01:43:42,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 765 transitions, 16309 flow, removed 97 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:42,973 INFO L231 Difference]: Finished difference. Result has 545 places, 730 transitions, 15106 flow [2024-06-28 01:43:42,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14607, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=15106, PETRI_PLACES=545, PETRI_TRANSITIONS=730} [2024-06-28 01:43:42,974 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 504 predicate places. [2024-06-28 01:43:42,974 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 730 transitions, 15106 flow [2024-06-28 01:43:42,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:42,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:42,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:43:42,975 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:42,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,975 INFO L85 PathProgramCache]: Analyzing trace with hash 647286183, now seen corresponding path program 5 times [2024-06-28 01:43:42,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557959346] [2024-06-28 01:43:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:43,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:43,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557959346] [2024-06-28 01:43:43,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557959346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:43,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:43,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:43,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887021843] [2024-06-28 01:43:43,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:43,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:43,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:43,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:43,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:43,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:43,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 730 transitions, 15106 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:43,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:43,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:43,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,319 INFO L124 PetriNetUnfolderBase]: 3979/6669 cut-off events. [2024-06-28 01:43:46,319 INFO L125 PetriNetUnfolderBase]: For 299297/299297 co-relation queries the response was YES. [2024-06-28 01:43:46,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53480 conditions, 6669 events. 3979/6669 cut-off events. For 299297/299297 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 45769 event pairs, 496 based on Foata normal form. 12/6633 useless extension candidates. Maximal degree in co-relation 53235. Up to 4500 conditions per place. [2024-06-28 01:43:46,409 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 456 selfloop transitions, 315 changer transitions 0/777 dead transitions. [2024-06-28 01:43:46,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 777 transitions, 17032 flow [2024-06-28 01:43:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:46,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:46,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:43:46,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:43:46,411 INFO L175 Difference]: Start difference. First operand has 545 places, 730 transitions, 15106 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:43:46,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 777 transitions, 17032 flow [2024-06-28 01:43:49,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 777 transitions, 16520 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:49,152 INFO L231 Difference]: Finished difference. Result has 547 places, 732 transitions, 15364 flow [2024-06-28 01:43:49,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14594, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15364, PETRI_PLACES=547, PETRI_TRANSITIONS=732} [2024-06-28 01:43:49,153 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 506 predicate places. [2024-06-28 01:43:49,153 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 732 transitions, 15364 flow [2024-06-28 01:43:49,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:49,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:49,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:49,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:43:49,153 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:49,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 879586357, now seen corresponding path program 6 times [2024-06-28 01:43:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:49,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246770395] [2024-06-28 01:43:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:49,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:49,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246770395] [2024-06-28 01:43:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246770395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:49,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:49,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912450638] [2024-06-28 01:43:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:49,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:49,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:50,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:50,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 732 transitions, 15364 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:50,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:50,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:52,507 INFO L124 PetriNetUnfolderBase]: 4059/6818 cut-off events. [2024-06-28 01:43:52,508 INFO L125 PetriNetUnfolderBase]: For 337124/337124 co-relation queries the response was YES. [2024-06-28 01:43:52,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55071 conditions, 6818 events. 4059/6818 cut-off events. For 337124/337124 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 47067 event pairs, 1440 based on Foata normal form. 12/6785 useless extension candidates. Maximal degree in co-relation 54825. Up to 6408 conditions per place. [2024-06-28 01:43:52,624 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 731 selfloop transitions, 37 changer transitions 0/774 dead transitions. [2024-06-28 01:43:52,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 774 transitions, 17268 flow [2024-06-28 01:43:52,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:52,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:52,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:43:52,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:43:52,625 INFO L175 Difference]: Start difference. First operand has 547 places, 732 transitions, 15364 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:43:52,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 774 transitions, 17268 flow [2024-06-28 01:43:55,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 774 transitions, 16536 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:55,684 INFO L231 Difference]: Finished difference. Result has 549 places, 734 transitions, 14850 flow [2024-06-28 01:43:55,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14632, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=732, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=695, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14850, PETRI_PLACES=549, PETRI_TRANSITIONS=734} [2024-06-28 01:43:55,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 508 predicate places. [2024-06-28 01:43:55,684 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 734 transitions, 14850 flow [2024-06-28 01:43:55,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:55,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:55,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:55,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:43:55,685 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:55,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:55,685 INFO L85 PathProgramCache]: Analyzing trace with hash 890628247, now seen corresponding path program 7 times [2024-06-28 01:43:55,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:55,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372264746] [2024-06-28 01:43:55,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:55,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:56,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:56,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:56,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372264746] [2024-06-28 01:43:56,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372264746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:56,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:56,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:56,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488499110] [2024-06-28 01:43:56,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:56,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:56,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:56,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:56,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 734 transitions, 14850 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:43:56,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:56,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:56,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,871 INFO L124 PetriNetUnfolderBase]: 4074/6843 cut-off events. [2024-06-28 01:43:58,871 INFO L125 PetriNetUnfolderBase]: For 258033/258033 co-relation queries the response was YES. [2024-06-28 01:43:58,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53799 conditions, 6843 events. 4074/6843 cut-off events. For 258033/258033 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 47283 event pairs, 1450 based on Foata normal form. 2/6800 useless extension candidates. Maximal degree in co-relation 53552. Up to 6534 conditions per place. [2024-06-28 01:43:58,987 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 727 selfloop transitions, 43 changer transitions 0/776 dead transitions. [2024-06-28 01:43:58,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 776 transitions, 16748 flow [2024-06-28 01:43:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:43:58,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:43:58,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:43:58,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-28 01:43:58,989 INFO L175 Difference]: Start difference. First operand has 549 places, 734 transitions, 14850 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:43:58,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 776 transitions, 16748 flow [2024-06-28 01:44:01,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 776 transitions, 16568 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:01,958 INFO L231 Difference]: Finished difference. Result has 552 places, 736 transitions, 14903 flow [2024-06-28 01:44:01,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14670, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14903, PETRI_PLACES=552, PETRI_TRANSITIONS=736} [2024-06-28 01:44:01,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 511 predicate places. [2024-06-28 01:44:01,959 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 736 transitions, 14903 flow [2024-06-28 01:44:01,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:44:01,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:01,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:01,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:44:01,959 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:01,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash 891014197, now seen corresponding path program 8 times [2024-06-28 01:44:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:01,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806585165] [2024-06-28 01:44:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:01,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:02,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:02,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806585165] [2024-06-28 01:44:02,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806585165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:02,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:02,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932647491] [2024-06-28 01:44:02,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:02,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:02,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:02,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:02,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:02,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:02,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 736 transitions, 14903 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:44:02,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:02,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:02,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:05,197 INFO L124 PetriNetUnfolderBase]: 4071/6838 cut-off events. [2024-06-28 01:44:05,197 INFO L125 PetriNetUnfolderBase]: For 234457/234457 co-relation queries the response was YES. [2024-06-28 01:44:05,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52980 conditions, 6838 events. 4071/6838 cut-off events. For 234457/234457 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 47229 event pairs, 1437 based on Foata normal form. 2/6795 useless extension candidates. Maximal degree in co-relation 52732. Up to 6350 conditions per place. [2024-06-28 01:44:05,308 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 729 selfloop transitions, 48 changer transitions 0/783 dead transitions. [2024-06-28 01:44:05,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 783 transitions, 16859 flow [2024-06-28 01:44:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:05,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 01:44:05,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-28 01:44:05,309 INFO L175 Difference]: Start difference. First operand has 552 places, 736 transitions, 14903 flow. Second operand 12 states and 195 transitions. [2024-06-28 01:44:05,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 783 transitions, 16859 flow [2024-06-28 01:44:08,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 783 transitions, 16642 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:08,014 INFO L231 Difference]: Finished difference. Result has 554 places, 738 transitions, 14933 flow [2024-06-28 01:44:08,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14686, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14933, PETRI_PLACES=554, PETRI_TRANSITIONS=738} [2024-06-28 01:44:08,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 513 predicate places. [2024-06-28 01:44:08,015 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 738 transitions, 14933 flow [2024-06-28 01:44:08,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 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) [2024-06-28 01:44:08,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:08,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:08,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:44:08,015 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:08,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 278113037, now seen corresponding path program 1 times [2024-06-28 01:44:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062390860] [2024-06-28 01:44:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:08,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:08,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062390860] [2024-06-28 01:44:08,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062390860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:08,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:08,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:08,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392221994] [2024-06-28 01:44:08,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:08,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:08,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:08,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:08,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:08,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:08,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 738 transitions, 14933 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:08,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:08,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:11,072 INFO L124 PetriNetUnfolderBase]: 4086/6858 cut-off events. [2024-06-28 01:44:11,072 INFO L125 PetriNetUnfolderBase]: For 229459/229459 co-relation queries the response was YES. [2024-06-28 01:44:11,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53050 conditions, 6858 events. 4086/6858 cut-off events. For 229459/229459 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 47055 event pairs, 1112 based on Foata normal form. 2/6816 useless extension candidates. Maximal degree in co-relation 52801. Up to 6301 conditions per place. [2024-06-28 01:44:11,187 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 689 selfloop transitions, 89 changer transitions 0/784 dead transitions. [2024-06-28 01:44:11,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 784 transitions, 16799 flow [2024-06-28 01:44:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:11,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-28 01:44:11,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-28 01:44:11,189 INFO L175 Difference]: Start difference. First operand has 554 places, 738 transitions, 14933 flow. Second operand 12 states and 191 transitions. [2024-06-28 01:44:11,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 784 transitions, 16799 flow [2024-06-28 01:44:14,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 784 transitions, 16568 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:14,234 INFO L231 Difference]: Finished difference. Result has 556 places, 740 transitions, 15015 flow [2024-06-28 01:44:14,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14702, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15015, PETRI_PLACES=556, PETRI_TRANSITIONS=740} [2024-06-28 01:44:14,235 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-28 01:44:14,235 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 740 transitions, 15015 flow [2024-06-28 01:44:14,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:14,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:14,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:44:14,235 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:14,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:14,235 INFO L85 PathProgramCache]: Analyzing trace with hash -40034671, now seen corresponding path program 2 times [2024-06-28 01:44:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:14,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105887137] [2024-06-28 01:44:14,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:14,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105887137] [2024-06-28 01:44:14,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105887137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:14,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640469411] [2024-06-28 01:44:14,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:14,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:14,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:15,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:15,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 740 transitions, 15015 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:15,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:15,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:15,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,322 INFO L124 PetriNetUnfolderBase]: 4110/6896 cut-off events. [2024-06-28 01:44:17,322 INFO L125 PetriNetUnfolderBase]: For 231383/231383 co-relation queries the response was YES. [2024-06-28 01:44:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53443 conditions, 6896 events. 4110/6896 cut-off events. For 231383/231383 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 47606 event pairs, 1242 based on Foata normal form. 2/6854 useless extension candidates. Maximal degree in co-relation 53193. Up to 6402 conditions per place. [2024-06-28 01:44:17,441 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 695 selfloop transitions, 87 changer transitions 0/788 dead transitions. [2024-06-28 01:44:17,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 788 transitions, 17024 flow [2024-06-28 01:44:17,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:17,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-28 01:44:17,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346846846846847 [2024-06-28 01:44:17,442 INFO L175 Difference]: Start difference. First operand has 556 places, 740 transitions, 15015 flow. Second operand 12 states and 193 transitions. [2024-06-28 01:44:17,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 788 transitions, 17024 flow [2024-06-28 01:44:20,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 788 transitions, 16607 flow, removed 120 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:20,765 INFO L231 Difference]: Finished difference. Result has 558 places, 744 transitions, 15049 flow [2024-06-28 01:44:20,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14722, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15049, PETRI_PLACES=558, PETRI_TRANSITIONS=744} [2024-06-28 01:44:20,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 517 predicate places. [2024-06-28 01:44:20,766 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 744 transitions, 15049 flow [2024-06-28 01:44:20,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:44:20,767 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:20,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,767 INFO L85 PathProgramCache]: Analyzing trace with hash 644875681, now seen corresponding path program 3 times [2024-06-28 01:44:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43937118] [2024-06-28 01:44:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:21,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43937118] [2024-06-28 01:44:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43937118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:21,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412379798] [2024-06-28 01:44:21,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:21,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:21,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:21,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:21,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 744 transitions, 15049 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:21,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:23,876 INFO L124 PetriNetUnfolderBase]: 4143/6953 cut-off events. [2024-06-28 01:44:23,876 INFO L125 PetriNetUnfolderBase]: For 254965/254965 co-relation queries the response was YES. [2024-06-28 01:44:23,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54046 conditions, 6953 events. 4143/6953 cut-off events. For 254965/254965 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 48114 event pairs, 1147 based on Foata normal form. 2/6911 useless extension candidates. Maximal degree in co-relation 53795. Up to 5970 conditions per place. [2024-06-28 01:44:23,990 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 664 selfloop transitions, 123 changer transitions 0/793 dead transitions. [2024-06-28 01:44:23,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 793 transitions, 17335 flow [2024-06-28 01:44:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:23,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:44:23,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-28 01:44:23,991 INFO L175 Difference]: Start difference. First operand has 558 places, 744 transitions, 15049 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:44:23,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 793 transitions, 17335 flow [2024-06-28 01:44:27,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 793 transitions, 17054 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:27,248 INFO L231 Difference]: Finished difference. Result has 561 places, 748 transitions, 15289 flow [2024-06-28 01:44:27,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14768, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15289, PETRI_PLACES=561, PETRI_TRANSITIONS=748} [2024-06-28 01:44:27,249 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 520 predicate places. [2024-06-28 01:44:27,249 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 748 transitions, 15289 flow [2024-06-28 01:44:27,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:27,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:27,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:44:27,250 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:27,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1896952313, now seen corresponding path program 4 times [2024-06-28 01:44:27,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:27,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288281782] [2024-06-28 01:44:27,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:27,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:27,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288281782] [2024-06-28 01:44:27,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288281782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:27,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:27,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897539640] [2024-06-28 01:44:27,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:27,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:28,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:28,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 748 transitions, 15289 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:28,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:28,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:28,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:30,375 INFO L124 PetriNetUnfolderBase]: 4158/6980 cut-off events. [2024-06-28 01:44:30,375 INFO L125 PetriNetUnfolderBase]: For 254187/254187 co-relation queries the response was YES. [2024-06-28 01:44:30,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54370 conditions, 6980 events. 4158/6980 cut-off events. For 254187/254187 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 48361 event pairs, 1152 based on Foata normal form. 2/6938 useless extension candidates. Maximal degree in co-relation 54118. Up to 6164 conditions per place. [2024-06-28 01:44:30,492 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 667 selfloop transitions, 122 changer transitions 0/795 dead transitions. [2024-06-28 01:44:30,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 795 transitions, 17455 flow [2024-06-28 01:44:30,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:30,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:44:30,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-28 01:44:30,494 INFO L175 Difference]: Start difference. First operand has 561 places, 748 transitions, 15289 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:44:30,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 795 transitions, 17455 flow [2024-06-28 01:44:33,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 795 transitions, 17118 flow, removed 92 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:33,954 INFO L231 Difference]: Finished difference. Result has 564 places, 750 transitions, 15339 flow [2024-06-28 01:44:33,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14980, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15339, PETRI_PLACES=564, PETRI_TRANSITIONS=750} [2024-06-28 01:44:33,955 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 523 predicate places. [2024-06-28 01:44:33,955 INFO L495 AbstractCegarLoop]: Abstraction has has 564 places, 750 transitions, 15339 flow [2024-06-28 01:44:33,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:33,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:33,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:44:33,956 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:33,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:33,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1896772823, now seen corresponding path program 5 times [2024-06-28 01:44:33,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:33,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299312708] [2024-06-28 01:44:33,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:33,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299312708] [2024-06-28 01:44:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299312708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:34,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:34,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114775420] [2024-06-28 01:44:34,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:34,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:34,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:34,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:34,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 750 transitions, 15339 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:34,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:34,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,242 INFO L124 PetriNetUnfolderBase]: 4173/7011 cut-off events. [2024-06-28 01:44:37,242 INFO L125 PetriNetUnfolderBase]: For 252832/252832 co-relation queries the response was YES. [2024-06-28 01:44:37,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54514 conditions, 7011 events. 4173/7011 cut-off events. For 252832/252832 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 48569 event pairs, 1229 based on Foata normal form. 2/6969 useless extension candidates. Maximal degree in co-relation 54260. Up to 6445 conditions per place. [2024-06-28 01:44:37,368 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 673 selfloop transitions, 117 changer transitions 0/796 dead transitions. [2024-06-28 01:44:37,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 796 transitions, 17235 flow [2024-06-28 01:44:37,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:37,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:44:37,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-28 01:44:37,369 INFO L175 Difference]: Start difference. First operand has 564 places, 750 transitions, 15339 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:44:37,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 796 transitions, 17235 flow [2024-06-28 01:44:40,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 796 transitions, 16882 flow, removed 50 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:40,779 INFO L231 Difference]: Finished difference. Result has 566 places, 752 transitions, 15344 flow [2024-06-28 01:44:40,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14990, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15344, PETRI_PLACES=566, PETRI_TRANSITIONS=752} [2024-06-28 01:44:40,779 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 525 predicate places. [2024-06-28 01:44:40,779 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 752 transitions, 15344 flow [2024-06-28 01:44:40,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:40,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:40,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:44:40,780 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:40,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 564545115, now seen corresponding path program 6 times [2024-06-28 01:44:40,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:40,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870800537] [2024-06-28 01:44:40,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:40,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:41,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:41,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870800537] [2024-06-28 01:44:41,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870800537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:41,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:41,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:41,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711475845] [2024-06-28 01:44:41,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:41,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:41,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:41,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:41,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:41,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:41,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 752 transitions, 15344 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:41,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:41,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,999 INFO L124 PetriNetUnfolderBase]: 4170/7004 cut-off events. [2024-06-28 01:44:43,999 INFO L125 PetriNetUnfolderBase]: For 235838/235838 co-relation queries the response was YES. [2024-06-28 01:44:44,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54037 conditions, 7004 events. 4170/7004 cut-off events. For 235838/235838 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 48550 event pairs, 1207 based on Foata normal form. 2/6962 useless extension candidates. Maximal degree in co-relation 53782. Up to 6356 conditions per place. [2024-06-28 01:44:44,124 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 671 selfloop transitions, 119 changer transitions 0/796 dead transitions. [2024-06-28 01:44:44,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 796 transitions, 17126 flow [2024-06-28 01:44:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-28 01:44:44,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:44:44,125 INFO L175 Difference]: Start difference. First operand has 566 places, 752 transitions, 15344 flow. Second operand 12 states and 198 transitions. [2024-06-28 01:44:44,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 796 transitions, 17126 flow [2024-06-28 01:44:47,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 796 transitions, 16724 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:47,853 INFO L231 Difference]: Finished difference. Result has 569 places, 752 transitions, 15187 flow [2024-06-28 01:44:47,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14942, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15187, PETRI_PLACES=569, PETRI_TRANSITIONS=752} [2024-06-28 01:44:47,854 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 528 predicate places. [2024-06-28 01:44:47,854 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 752 transitions, 15187 flow [2024-06-28 01:44:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:44:47,855 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:47,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1473750277, now seen corresponding path program 7 times [2024-06-28 01:44:47,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523010558] [2024-06-28 01:44:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:48,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:48,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:48,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523010558] [2024-06-28 01:44:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523010558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:48,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:48,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236412114] [2024-06-28 01:44:48,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:48,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:48,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:48,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:48,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:48,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 752 transitions, 15187 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:48,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:48,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,007 INFO L124 PetriNetUnfolderBase]: 4203/7049 cut-off events. [2024-06-28 01:44:51,007 INFO L125 PetriNetUnfolderBase]: For 241670/241670 co-relation queries the response was YES. [2024-06-28 01:44:51,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54206 conditions, 7049 events. 4203/7049 cut-off events. For 241670/241670 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 48770 event pairs, 1299 based on Foata normal form. 2/7007 useless extension candidates. Maximal degree in co-relation 53950. Up to 6521 conditions per place. [2024-06-28 01:44:51,127 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 710 selfloop transitions, 86 changer transitions 0/802 dead transitions. [2024-06-28 01:44:51,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 802 transitions, 17122 flow [2024-06-28 01:44:51,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:51,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:51,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-28 01:44:51,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:44:51,134 INFO L175 Difference]: Start difference. First operand has 569 places, 752 transitions, 15187 flow. Second operand 12 states and 192 transitions. [2024-06-28 01:44:51,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 802 transitions, 17122 flow [2024-06-28 01:44:54,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 802 transitions, 16846 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 01:44:54,741 INFO L231 Difference]: Finished difference. Result has 570 places, 758 transitions, 15267 flow [2024-06-28 01:44:54,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14911, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=752, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=666, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15267, PETRI_PLACES=570, PETRI_TRANSITIONS=758} [2024-06-28 01:44:54,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 529 predicate places. [2024-06-28 01:44:54,742 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 758 transitions, 15267 flow [2024-06-28 01:44:54,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:54,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:54,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:44:54,742 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:54,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:54,742 INFO L85 PathProgramCache]: Analyzing trace with hash -592013573, now seen corresponding path program 8 times [2024-06-28 01:44:54,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:54,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050935156] [2024-06-28 01:44:54,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:55,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:55,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:55,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050935156] [2024-06-28 01:44:55,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050935156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:55,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:55,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:55,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812860545] [2024-06-28 01:44:55,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:55,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:44:55,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:55,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:44:55,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:44:55,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:55,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 758 transitions, 15267 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:55,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:55,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:58,168 INFO L124 PetriNetUnfolderBase]: 4272/7164 cut-off events. [2024-06-28 01:44:58,168 INFO L125 PetriNetUnfolderBase]: For 270481/270481 co-relation queries the response was YES. [2024-06-28 01:44:58,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55384 conditions, 7164 events. 4272/7164 cut-off events. For 270481/270481 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 49777 event pairs, 1275 based on Foata normal form. 2/7122 useless extension candidates. Maximal degree in co-relation 55127. Up to 6140 conditions per place. [2024-06-28 01:44:58,287 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 677 selfloop transitions, 132 changer transitions 0/815 dead transitions. [2024-06-28 01:44:58,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 815 transitions, 17661 flow [2024-06-28 01:44:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-28 01:44:58,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-28 01:44:58,288 INFO L175 Difference]: Start difference. First operand has 570 places, 758 transitions, 15267 flow. Second operand 12 states and 201 transitions. [2024-06-28 01:44:58,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 815 transitions, 17661 flow [2024-06-28 01:45:01,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 815 transitions, 17375 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:01,931 INFO L231 Difference]: Finished difference. Result has 573 places, 770 transitions, 15643 flow [2024-06-28 01:45:01,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14981, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15643, PETRI_PLACES=573, PETRI_TRANSITIONS=770} [2024-06-28 01:45:01,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 532 predicate places. [2024-06-28 01:45:01,932 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 770 transitions, 15643 flow [2024-06-28 01:45:01,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:01,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:45:01,932 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:01,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash -587544923, now seen corresponding path program 9 times [2024-06-28 01:45:01,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:01,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869874505] [2024-06-28 01:45:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:01,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:02,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:02,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:02,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869874505] [2024-06-28 01:45:02,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869874505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:02,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:02,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:02,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274989065] [2024-06-28 01:45:02,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:02,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:02,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:02,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:02,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:02,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:02,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 770 transitions, 15643 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:02,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:02,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:05,348 INFO L124 PetriNetUnfolderBase]: 4287/7189 cut-off events. [2024-06-28 01:45:05,348 INFO L125 PetriNetUnfolderBase]: For 271259/271259 co-relation queries the response was YES. [2024-06-28 01:45:05,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55879 conditions, 7189 events. 4287/7189 cut-off events. For 271259/271259 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 50018 event pairs, 1270 based on Foata normal form. 2/7147 useless extension candidates. Maximal degree in co-relation 55620. Up to 6343 conditions per place. [2024-06-28 01:45:05,473 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 679 selfloop transitions, 132 changer transitions 0/817 dead transitions. [2024-06-28 01:45:05,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 817 transitions, 17871 flow [2024-06-28 01:45:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:05,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:05,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-28 01:45:05,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:45:05,474 INFO L175 Difference]: Start difference. First operand has 573 places, 770 transitions, 15643 flow. Second operand 12 states and 200 transitions. [2024-06-28 01:45:05,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 817 transitions, 17871 flow [2024-06-28 01:45:09,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 817 transitions, 17547 flow, removed 94 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:09,237 INFO L231 Difference]: Finished difference. Result has 577 places, 772 transitions, 15740 flow [2024-06-28 01:45:09,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15347, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15740, PETRI_PLACES=577, PETRI_TRANSITIONS=772} [2024-06-28 01:45:09,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 536 predicate places. [2024-06-28 01:45:09,238 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 772 transitions, 15740 flow [2024-06-28 01:45:09,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:09,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:09,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:45:09,238 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:09,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1978554529, now seen corresponding path program 10 times [2024-06-28 01:45:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269915426] [2024-06-28 01:45:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269915426] [2024-06-28 01:45:10,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269915426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:10,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271670161] [2024-06-28 01:45:10,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:10,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:10,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:10,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 772 transitions, 15740 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:10,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:12,489 INFO L124 PetriNetUnfolderBase]: 4302/7214 cut-off events. [2024-06-28 01:45:12,489 INFO L125 PetriNetUnfolderBase]: For 269237/269237 co-relation queries the response was YES. [2024-06-28 01:45:12,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56095 conditions, 7214 events. 4302/7214 cut-off events. For 269237/269237 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 50082 event pairs, 1338 based on Foata normal form. 2/7172 useless extension candidates. Maximal degree in co-relation 55834. Up to 6624 conditions per place. [2024-06-28 01:45:12,610 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 693 selfloop transitions, 119 changer transitions 0/818 dead transitions. [2024-06-28 01:45:12,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 818 transitions, 17688 flow [2024-06-28 01:45:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:45:12,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:45:12,611 INFO L175 Difference]: Start difference. First operand has 577 places, 772 transitions, 15740 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:45:12,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 818 transitions, 17688 flow [2024-06-28 01:45:16,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 818 transitions, 17260 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:16,815 INFO L231 Difference]: Finished difference. Result has 579 places, 774 transitions, 15686 flow [2024-06-28 01:45:16,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15316, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=772, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15686, PETRI_PLACES=579, PETRI_TRANSITIONS=774} [2024-06-28 01:45:16,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 538 predicate places. [2024-06-28 01:45:16,815 INFO L495 AbstractCegarLoop]: Abstraction has has 579 places, 774 transitions, 15686 flow [2024-06-28 01:45:16,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:16,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:45:16,815 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:16,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -587371943, now seen corresponding path program 11 times [2024-06-28 01:45:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102890663] [2024-06-28 01:45:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:17,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:17,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:17,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102890663] [2024-06-28 01:45:17,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102890663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:17,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:17,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:17,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637747405] [2024-06-28 01:45:17,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:17,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:17,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:17,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:17,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:17,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 579 places, 774 transitions, 15686 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:17,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:17,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:20,526 INFO L124 PetriNetUnfolderBase]: 4299/7209 cut-off events. [2024-06-28 01:45:20,526 INFO L125 PetriNetUnfolderBase]: For 249966/249966 co-relation queries the response was YES. [2024-06-28 01:45:20,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55538 conditions, 7209 events. 4299/7209 cut-off events. For 249966/249966 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 50073 event pairs, 1315 based on Foata normal form. 2/7167 useless extension candidates. Maximal degree in co-relation 55276. Up to 6520 conditions per place. [2024-06-28 01:45:20,622 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 687 selfloop transitions, 125 changer transitions 0/818 dead transitions. [2024-06-28 01:45:20,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 818 transitions, 17510 flow [2024-06-28 01:45:20,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:20,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-28 01:45:20,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436936936936937 [2024-06-28 01:45:20,624 INFO L175 Difference]: Start difference. First operand has 579 places, 774 transitions, 15686 flow. Second operand 12 states and 197 transitions. [2024-06-28 01:45:20,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 818 transitions, 17510 flow [2024-06-28 01:45:24,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 818 transitions, 17100 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:24,194 INFO L231 Difference]: Finished difference. Result has 582 places, 774 transitions, 15537 flow [2024-06-28 01:45:24,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15276, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15537, PETRI_PLACES=582, PETRI_TRANSITIONS=774} [2024-06-28 01:45:24,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 541 predicate places. [2024-06-28 01:45:24,195 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 774 transitions, 15537 flow [2024-06-28 01:45:24,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:24,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:24,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:45:24,196 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:24,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:24,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1498675207, now seen corresponding path program 12 times [2024-06-28 01:45:24,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:24,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482595823] [2024-06-28 01:45:24,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:24,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:24,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482595823] [2024-06-28 01:45:24,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482595823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:24,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:24,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:24,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907920377] [2024-06-28 01:45:24,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:24,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:24,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:24,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:25,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:25,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 774 transitions, 15537 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:25,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,636 INFO L124 PetriNetUnfolderBase]: 4314/7234 cut-off events. [2024-06-28 01:45:27,636 INFO L125 PetriNetUnfolderBase]: For 257034/257034 co-relation queries the response was YES. [2024-06-28 01:45:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55581 conditions, 7234 events. 4314/7234 cut-off events. For 257034/257034 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 50127 event pairs, 1273 based on Foata normal form. 2/7191 useless extension candidates. Maximal degree in co-relation 55318. Up to 6049 conditions per place. [2024-06-28 01:45:27,747 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 648 selfloop transitions, 167 changer transitions 0/821 dead transitions. [2024-06-28 01:45:27,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 821 transitions, 17527 flow [2024-06-28 01:45:27,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:27,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:27,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:45:27,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:45:27,748 INFO L175 Difference]: Start difference. First operand has 582 places, 774 transitions, 15537 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:45:27,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 821 transitions, 17527 flow [2024-06-28 01:45:31,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 821 transitions, 17205 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-28 01:45:31,372 INFO L231 Difference]: Finished difference. Result has 582 places, 776 transitions, 15700 flow [2024-06-28 01:45:31,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15215, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15700, PETRI_PLACES=582, PETRI_TRANSITIONS=776} [2024-06-28 01:45:31,372 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 541 predicate places. [2024-06-28 01:45:31,372 INFO L495 AbstractCegarLoop]: Abstraction has has 582 places, 776 transitions, 15700 flow [2024-06-28 01:45:31,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:31,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:31,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:45:31,373 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1501294473, now seen corresponding path program 13 times [2024-06-28 01:45:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500862041] [2024-06-28 01:45:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:32,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:32,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:32,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500862041] [2024-06-28 01:45:32,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500862041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:32,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454968989] [2024-06-28 01:45:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:32,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:32,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:32,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:32,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:32,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:32,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 776 transitions, 15700 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:32,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:32,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:34,813 INFO L124 PetriNetUnfolderBase]: 4329/7260 cut-off events. [2024-06-28 01:45:34,813 INFO L125 PetriNetUnfolderBase]: For 266310/266310 co-relation queries the response was YES. [2024-06-28 01:45:34,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56041 conditions, 7260 events. 4329/7260 cut-off events. For 266310/266310 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 50301 event pairs, 1264 based on Foata normal form. 2/7217 useless extension candidates. Maximal degree in co-relation 55778. Up to 6033 conditions per place. [2024-06-28 01:45:34,932 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 647 selfloop transitions, 170 changer transitions 0/823 dead transitions. [2024-06-28 01:45:34,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 823 transitions, 17696 flow [2024-06-28 01:45:34,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:34,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-28 01:45:34,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:45:34,934 INFO L175 Difference]: Start difference. First operand has 582 places, 776 transitions, 15700 flow. Second operand 12 states and 207 transitions. [2024-06-28 01:45:34,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 823 transitions, 17696 flow [2024-06-28 01:45:38,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 823 transitions, 17230 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:38,526 INFO L231 Difference]: Finished difference. Result has 585 places, 778 transitions, 15729 flow [2024-06-28 01:45:38,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15234, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15729, PETRI_PLACES=585, PETRI_TRANSITIONS=778} [2024-06-28 01:45:38,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 544 predicate places. [2024-06-28 01:45:38,527 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 778 transitions, 15729 flow [2024-06-28 01:45:38,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:38,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:38,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:38,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:45:38,527 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:38,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:38,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1498495717, now seen corresponding path program 14 times [2024-06-28 01:45:38,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:38,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378037804] [2024-06-28 01:45:38,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:38,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378037804] [2024-06-28 01:45:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378037804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:39,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:39,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560385002] [2024-06-28 01:45:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:39,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:39,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:39,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:39,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:39,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 778 transitions, 15729 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:39,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:39,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:41,957 INFO L124 PetriNetUnfolderBase]: 4344/7285 cut-off events. [2024-06-28 01:45:41,958 INFO L125 PetriNetUnfolderBase]: For 269961/269961 co-relation queries the response was YES. [2024-06-28 01:45:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56223 conditions, 7285 events. 4344/7285 cut-off events. For 269961/269961 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 50560 event pairs, 1258 based on Foata normal form. 2/7242 useless extension candidates. Maximal degree in co-relation 55959. Up to 5994 conditions per place. [2024-06-28 01:45:42,080 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 646 selfloop transitions, 173 changer transitions 0/825 dead transitions. [2024-06-28 01:45:42,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 825 transitions, 17731 flow [2024-06-28 01:45:42,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:42,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:42,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:45:42,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:45:42,081 INFO L175 Difference]: Start difference. First operand has 585 places, 778 transitions, 15729 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:45:42,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 825 transitions, 17731 flow [2024-06-28 01:45:46,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 825 transitions, 17252 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:46,191 INFO L231 Difference]: Finished difference. Result has 587 places, 780 transitions, 15755 flow [2024-06-28 01:45:46,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15250, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=605, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15755, PETRI_PLACES=587, PETRI_TRANSITIONS=780} [2024-06-28 01:45:46,191 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 546 predicate places. [2024-06-28 01:45:46,191 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 780 transitions, 15755 flow [2024-06-28 01:45:46,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:46,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:46,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:45:46,192 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:46,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1494027067, now seen corresponding path program 15 times [2024-06-28 01:45:46,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:46,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711479779] [2024-06-28 01:45:46,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:46,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:46,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:46,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:46,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711479779] [2024-06-28 01:45:46,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711479779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:46,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:46,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:46,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224428002] [2024-06-28 01:45:46,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:46,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:46,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:46,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:46,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:47,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:47,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 780 transitions, 15755 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:47,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:47,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:47,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:49,456 INFO L124 PetriNetUnfolderBase]: 4455/7478 cut-off events. [2024-06-28 01:45:49,456 INFO L125 PetriNetUnfolderBase]: For 399230/399230 co-relation queries the response was YES. [2024-06-28 01:45:49,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59532 conditions, 7478 events. 4455/7478 cut-off events. For 399230/399230 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 52206 event pairs, 1287 based on Foata normal form. 2/7435 useless extension candidates. Maximal degree in co-relation 59267. Up to 5819 conditions per place. [2024-06-28 01:45:49,585 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 647 selfloop transitions, 181 changer transitions 0/834 dead transitions. [2024-06-28 01:45:49,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 834 transitions, 18241 flow [2024-06-28 01:45:49,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 01:45:49,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4752252252252252 [2024-06-28 01:45:49,587 INFO L175 Difference]: Start difference. First operand has 587 places, 780 transitions, 15755 flow. Second operand 12 states and 211 transitions. [2024-06-28 01:45:49,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 834 transitions, 18241 flow [2024-06-28 01:45:53,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 834 transitions, 17749 flow, removed 73 selfloop flow, removed 11 redundant places. [2024-06-28 01:45:54,002 INFO L231 Difference]: Finished difference. Result has 588 places, 784 transitions, 15942 flow [2024-06-28 01:45:54,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15263, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15942, PETRI_PLACES=588, PETRI_TRANSITIONS=784} [2024-06-28 01:45:54,002 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 547 predicate places. [2024-06-28 01:45:54,002 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 784 transitions, 15942 flow [2024-06-28 01:45:54,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:54,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:54,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:54,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:45:54,003 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:54,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:54,003 INFO L85 PathProgramCache]: Analyzing trace with hash -685002745, now seen corresponding path program 16 times [2024-06-28 01:45:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:54,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268979246] [2024-06-28 01:45:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:54,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:54,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:54,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268979246] [2024-06-28 01:45:54,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268979246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:54,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:54,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:54,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980250461] [2024-06-28 01:45:54,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:54,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:54,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:54,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:54,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:54,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:54,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 784 transitions, 15942 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:54,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:54,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:54,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:57,260 INFO L124 PetriNetUnfolderBase]: 4470/7503 cut-off events. [2024-06-28 01:45:57,260 INFO L125 PetriNetUnfolderBase]: For 392434/392434 co-relation queries the response was YES. [2024-06-28 01:45:57,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59741 conditions, 7503 events. 4470/7503 cut-off events. For 392434/392434 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 52524 event pairs, 1249 based on Foata normal form. 2/7460 useless extension candidates. Maximal degree in co-relation 59475. Up to 6317 conditions per place. [2024-06-28 01:45:57,390 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 644 selfloop transitions, 181 changer transitions 0/831 dead transitions. [2024-06-28 01:45:57,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 831 transitions, 17968 flow [2024-06-28 01:45:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-28 01:45:57,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572072072072072 [2024-06-28 01:45:57,391 INFO L175 Difference]: Start difference. First operand has 588 places, 784 transitions, 15942 flow. Second operand 12 states and 203 transitions. [2024-06-28 01:45:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 831 transitions, 17968 flow [2024-06-28 01:46:02,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 831 transitions, 17541 flow, removed 107 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:02,801 INFO L231 Difference]: Finished difference. Result has 592 places, 786 transitions, 16044 flow [2024-06-28 01:46:02,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15547, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16044, PETRI_PLACES=592, PETRI_TRANSITIONS=786} [2024-06-28 01:46:02,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 551 predicate places. [2024-06-28 01:46:02,801 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 786 transitions, 16044 flow [2024-06-28 01:46:02,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:02,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:02,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:02,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:46:02,802 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:02,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:02,802 INFO L85 PathProgramCache]: Analyzing trace with hash -685009255, now seen corresponding path program 17 times [2024-06-28 01:46:02,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:02,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993403948] [2024-06-28 01:46:02,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:02,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:03,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:03,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:03,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993403948] [2024-06-28 01:46:03,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993403948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:03,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:03,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:03,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272684225] [2024-06-28 01:46:03,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:03,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:03,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:03,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:03,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 786 transitions, 16044 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:03,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:03,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:03,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:06,251 INFO L124 PetriNetUnfolderBase]: 4503/7558 cut-off events. [2024-06-28 01:46:06,251 INFO L125 PetriNetUnfolderBase]: For 407852/407852 co-relation queries the response was YES. [2024-06-28 01:46:06,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60633 conditions, 7558 events. 4503/7558 cut-off events. For 407852/407852 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 52941 event pairs, 1223 based on Foata normal form. 2/7515 useless extension candidates. Maximal degree in co-relation 60365. Up to 6167 conditions per place. [2024-06-28 01:46:06,376 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 648 selfloop transitions, 186 changer transitions 0/840 dead transitions. [2024-06-28 01:46:06,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 840 transitions, 18502 flow [2024-06-28 01:46:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:06,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:46:06,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:46:06,390 INFO L175 Difference]: Start difference. First operand has 592 places, 786 transitions, 16044 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:46:06,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 840 transitions, 18502 flow [2024-06-28 01:46:11,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 840 transitions, 18025 flow, removed 59 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:11,145 INFO L231 Difference]: Finished difference. Result has 594 places, 790 transitions, 16208 flow [2024-06-28 01:46:11,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15567, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16208, PETRI_PLACES=594, PETRI_TRANSITIONS=790} [2024-06-28 01:46:11,145 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 553 predicate places. [2024-06-28 01:46:11,145 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 790 transitions, 16208 flow [2024-06-28 01:46:11,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:11,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:11,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:46:11,145 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:11,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -912903895, now seen corresponding path program 18 times [2024-06-28 01:46:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:11,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137145089] [2024-06-28 01:46:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:11,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:11,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:11,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:11,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137145089] [2024-06-28 01:46:11,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137145089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:11,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:11,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:11,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153488953] [2024-06-28 01:46:11,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:11,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:12,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:12,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 790 transitions, 16208 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:12,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:12,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:12,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:14,629 INFO L124 PetriNetUnfolderBase]: 4518/7583 cut-off events. [2024-06-28 01:46:14,629 INFO L125 PetriNetUnfolderBase]: For 413041/413041 co-relation queries the response was YES. [2024-06-28 01:46:14,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60831 conditions, 7583 events. 4518/7583 cut-off events. For 413041/413041 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 53128 event pairs, 1268 based on Foata normal form. 2/7540 useless extension candidates. Maximal degree in co-relation 60562. Up to 6397 conditions per place. [2024-06-28 01:46:14,761 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 657 selfloop transitions, 174 changer transitions 0/837 dead transitions. [2024-06-28 01:46:14,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 837 transitions, 18222 flow [2024-06-28 01:46:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:14,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-28 01:46:14,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4617117117117117 [2024-06-28 01:46:14,763 INFO L175 Difference]: Start difference. First operand has 594 places, 790 transitions, 16208 flow. Second operand 12 states and 205 transitions. [2024-06-28 01:46:14,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 837 transitions, 18222 flow [2024-06-28 01:46:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 837 transitions, 17858 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:19,868 INFO L231 Difference]: Finished difference. Result has 598 places, 792 transitions, 16335 flow [2024-06-28 01:46:19,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15844, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16335, PETRI_PLACES=598, PETRI_TRANSITIONS=792} [2024-06-28 01:46:19,868 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 557 predicate places. [2024-06-28 01:46:19,868 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 792 transitions, 16335 flow [2024-06-28 01:46:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:19,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:19,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:46:19,869 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:19,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:19,869 INFO L85 PathProgramCache]: Analyzing trace with hash -912910405, now seen corresponding path program 19 times [2024-06-28 01:46:19,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793516123] [2024-06-28 01:46:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:19,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:20,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:20,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:20,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793516123] [2024-06-28 01:46:20,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793516123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:20,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:20,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:20,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201310806] [2024-06-28 01:46:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:20,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:20,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:20,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:20,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:20,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:20,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 792 transitions, 16335 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:20,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:20,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:20,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:23,102 INFO L124 PetriNetUnfolderBase]: 4533/7608 cut-off events. [2024-06-28 01:46:23,102 INFO L125 PetriNetUnfolderBase]: For 418571/418571 co-relation queries the response was YES. [2024-06-28 01:46:23,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61284 conditions, 7608 events. 4533/7608 cut-off events. For 418571/418571 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 53374 event pairs, 1266 based on Foata normal form. 2/7565 useless extension candidates. Maximal degree in co-relation 61013. Up to 6381 conditions per place. [2024-06-28 01:46:23,230 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 656 selfloop transitions, 177 changer transitions 0/839 dead transitions. [2024-06-28 01:46:23,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 839 transitions, 18355 flow [2024-06-28 01:46:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:23,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:46:23,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:46:23,231 INFO L175 Difference]: Start difference. First operand has 598 places, 792 transitions, 16335 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:46:23,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 839 transitions, 18355 flow [2024-06-28 01:46:28,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 839 transitions, 17884 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:28,639 INFO L231 Difference]: Finished difference. Result has 600 places, 794 transitions, 16365 flow [2024-06-28 01:46:28,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15864, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=615, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16365, PETRI_PLACES=600, PETRI_TRANSITIONS=794} [2024-06-28 01:46:28,639 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 559 predicate places. [2024-06-28 01:46:28,640 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 794 transitions, 16365 flow [2024-06-28 01:46:28,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:28,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:28,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:46:28,640 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:28,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:28,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1074734625, now seen corresponding path program 20 times [2024-06-28 01:46:28,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:28,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82757714] [2024-06-28 01:46:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:29,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:29,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:29,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82757714] [2024-06-28 01:46:29,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82757714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:29,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:29,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:29,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460577316] [2024-06-28 01:46:29,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:29,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:29,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:29,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:29,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:29,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 794 transitions, 16365 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:29,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:29,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:29,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:32,023 INFO L124 PetriNetUnfolderBase]: 4517/7580 cut-off events. [2024-06-28 01:46:32,023 INFO L125 PetriNetUnfolderBase]: For 399231/399231 co-relation queries the response was YES. [2024-06-28 01:46:32,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59292 conditions, 7580 events. 4517/7580 cut-off events. For 399231/399231 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 53079 event pairs, 1239 based on Foata normal form. 12/7547 useless extension candidates. Maximal degree in co-relation 59020. Up to 6274 conditions per place. [2024-06-28 01:46:32,154 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 641 selfloop transitions, 196 changer transitions 0/843 dead transitions. [2024-06-28 01:46:32,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 843 transitions, 18295 flow [2024-06-28 01:46:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-28 01:46:32,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:46:32,155 INFO L175 Difference]: Start difference. First operand has 600 places, 794 transitions, 16365 flow. Second operand 12 states and 206 transitions. [2024-06-28 01:46:32,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 843 transitions, 18295 flow [2024-06-28 01:46:36,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 843 transitions, 17728 flow, removed 108 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:36,640 INFO L231 Difference]: Finished difference. Result has 602 places, 794 transitions, 16197 flow [2024-06-28 01:46:36,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15798, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16197, PETRI_PLACES=602, PETRI_TRANSITIONS=794} [2024-06-28 01:46:36,640 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 561 predicate places. [2024-06-28 01:46:36,641 INFO L495 AbstractCegarLoop]: Abstraction has has 602 places, 794 transitions, 16197 flow [2024-06-28 01:46:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:36,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:36,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:36,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:46:36,641 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:36,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash -673795301, now seen corresponding path program 1 times [2024-06-28 01:46:36,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:36,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503605889] [2024-06-28 01:46:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:36,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:37,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:37,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503605889] [2024-06-28 01:46:37,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503605889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:37,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:37,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:37,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420259360] [2024-06-28 01:46:37,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:37,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:37,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:37,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:37,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:37,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 794 transitions, 16197 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:37,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:37,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:37,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:39,894 INFO L124 PetriNetUnfolderBase]: 4612/7753 cut-off events. [2024-06-28 01:46:39,894 INFO L125 PetriNetUnfolderBase]: For 427504/427504 co-relation queries the response was YES. [2024-06-28 01:46:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61049 conditions, 7753 events. 4612/7753 cut-off events. For 427504/427504 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 54594 event pairs, 1226 based on Foata normal form. 8/7716 useless extension candidates. Maximal degree in co-relation 60776. Up to 5962 conditions per place. [2024-06-28 01:46:40,038 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 644 selfloop transitions, 200 changer transitions 0/850 dead transitions. [2024-06-28 01:46:40,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 850 transitions, 18719 flow [2024-06-28 01:46:40,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-28 01:46:40,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:46:40,039 INFO L175 Difference]: Start difference. First operand has 602 places, 794 transitions, 16197 flow. Second operand 12 states and 208 transitions. [2024-06-28 01:46:40,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 850 transitions, 18719 flow [2024-06-28 01:46:45,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 850 transitions, 18313 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:46:45,785 INFO L231 Difference]: Finished difference. Result has 603 places, 796 transitions, 16409 flow [2024-06-28 01:46:45,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15791, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=794, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16409, PETRI_PLACES=603, PETRI_TRANSITIONS=796} [2024-06-28 01:46:45,788 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 562 predicate places. [2024-06-28 01:46:45,788 INFO L495 AbstractCegarLoop]: Abstraction has has 603 places, 796 transitions, 16409 flow [2024-06-28 01:46:45,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:45,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:45,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:46:45,789 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:45,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:45,789 INFO L85 PathProgramCache]: Analyzing trace with hash -913083385, now seen corresponding path program 21 times [2024-06-28 01:46:45,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:45,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813242190] [2024-06-28 01:46:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:45,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:46,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:46,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813242190] [2024-06-28 01:46:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813242190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407443352] [2024-06-28 01:46:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:46,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:46,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:46,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 796 transitions, 16409 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:46,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:46,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:46,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:49,171 INFO L124 PetriNetUnfolderBase]: 4609/7748 cut-off events. [2024-06-28 01:46:49,171 INFO L125 PetriNetUnfolderBase]: For 353354/353354 co-relation queries the response was YES. [2024-06-28 01:46:49,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60718 conditions, 7748 events. 4609/7748 cut-off events. For 353354/353354 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 54603 event pairs, 1283 based on Foata normal form. 2/7705 useless extension candidates. Maximal degree in co-relation 60444. Up to 6260 conditions per place. [2024-06-28 01:46:49,310 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 652 selfloop transitions, 187 changer transitions 0/845 dead transitions. [2024-06-28 01:46:49,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 845 transitions, 18339 flow [2024-06-28 01:46:49,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:49,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-28 01:46:49,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47072072072072074 [2024-06-28 01:46:49,312 INFO L175 Difference]: Start difference. First operand has 603 places, 796 transitions, 16409 flow. Second operand 12 states and 209 transitions. [2024-06-28 01:46:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 845 transitions, 18339 flow [2024-06-28 01:46:54,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 845 transitions, 17915 flow, removed 81 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:54,883 INFO L231 Difference]: Finished difference. Result has 607 places, 796 transitions, 16364 flow [2024-06-28 01:46:54,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15985, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=16364, PETRI_PLACES=607, PETRI_TRANSITIONS=796} [2024-06-28 01:46:54,884 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 566 predicate places. [2024-06-28 01:46:54,884 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 796 transitions, 16364 flow [2024-06-28 01:46:54,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:54,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:54,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:46:54,884 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:54,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1945217157, now seen corresponding path program 22 times [2024-06-28 01:46:54,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059862551] [2024-06-28 01:46:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:55,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:55,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:55,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059862551] [2024-06-28 01:46:55,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059862551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:55,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:55,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:55,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47488480] [2024-06-28 01:46:55,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:55,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:55,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:55,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:55,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:55,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:55,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 796 transitions, 16364 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:55,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:58,376 INFO L124 PetriNetUnfolderBase]: 4627/7779 cut-off events. [2024-06-28 01:46:58,377 INFO L125 PetriNetUnfolderBase]: For 359538/359538 co-relation queries the response was YES. [2024-06-28 01:46:58,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61131 conditions, 7779 events. 4627/7779 cut-off events. For 359538/359538 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 54816 event pairs, 1328 based on Foata normal form. 2/7737 useless extension candidates. Maximal degree in co-relation 60855. Up to 6838 conditions per place. [2024-06-28 01:46:58,512 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 711 selfloop transitions, 123 changer transitions 0/840 dead transitions. [2024-06-28 01:46:58,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 840 transitions, 18524 flow [2024-06-28 01:46:58,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:58,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:58,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:46:58,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:46:58,513 INFO L175 Difference]: Start difference. First operand has 607 places, 796 transitions, 16364 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:46:58,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 840 transitions, 18524 flow [2024-06-28 01:47:03,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 840 transitions, 17929 flow, removed 35 selfloop flow, removed 12 redundant places. [2024-06-28 01:47:03,588 INFO L231 Difference]: Finished difference. Result has 607 places, 800 transitions, 16391 flow [2024-06-28 01:47:03,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15769, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=796, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=674, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=16391, PETRI_PLACES=607, PETRI_TRANSITIONS=800} [2024-06-28 01:47:03,589 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 566 predicate places. [2024-06-28 01:47:03,589 INFO L495 AbstractCegarLoop]: Abstraction has has 607 places, 800 transitions, 16391 flow [2024-06-28 01:47:03,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:03,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:03,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:03,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:47:03,589 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:03,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:03,590 INFO L85 PathProgramCache]: Analyzing trace with hash -758311149, now seen corresponding path program 23 times [2024-06-28 01:47:03,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:03,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372043800] [2024-06-28 01:47:03,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:03,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372043800] [2024-06-28 01:47:04,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372043800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973578488] [2024-06-28 01:47:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:04,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:04,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:04,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:04,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:04,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 800 transitions, 16391 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:04,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:04,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:04,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:07,220 INFO L124 PetriNetUnfolderBase]: 4666/7848 cut-off events. [2024-06-28 01:47:07,220 INFO L125 PetriNetUnfolderBase]: For 400624/400624 co-relation queries the response was YES. [2024-06-28 01:47:07,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62148 conditions, 7848 events. 4666/7848 cut-off events. For 400624/400624 co-relation queries the response was YES. Maximal size of possible extension queue 538. Compared 55707 event pairs, 1277 based on Foata normal form. 2/7806 useless extension candidates. Maximal degree in co-relation 61871. Up to 5851 conditions per place. [2024-06-28 01:47:07,352 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 622 selfloop transitions, 222 changer transitions 0/850 dead transitions. [2024-06-28 01:47:07,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 850 transitions, 19191 flow [2024-06-28 01:47:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:07,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:47:07,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:47:07,353 INFO L175 Difference]: Start difference. First operand has 607 places, 800 transitions, 16391 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:47:07,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 850 transitions, 19191 flow [2024-06-28 01:47:12,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 850 transitions, 18766 flow, removed 144 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:12,992 INFO L231 Difference]: Finished difference. Result has 613 places, 807 transitions, 17145 flow [2024-06-28 01:47:12,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15966, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=581, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17145, PETRI_PLACES=613, PETRI_TRANSITIONS=807} [2024-06-28 01:47:12,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 572 predicate places. [2024-06-28 01:47:12,993 INFO L495 AbstractCegarLoop]: Abstraction has has 613 places, 807 transitions, 17145 flow [2024-06-28 01:47:12,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:12,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:12,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:12,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:47:12,993 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:12,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1315913737, now seen corresponding path program 24 times [2024-06-28 01:47:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:12,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495389968] [2024-06-28 01:47:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:12,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:13,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495389968] [2024-06-28 01:47:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495389968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121396522] [2024-06-28 01:47:13,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:13,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:13,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:13,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:13,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:13,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:13,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 807 transitions, 17145 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:13,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:13,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:16,562 INFO L124 PetriNetUnfolderBase]: 4697/7901 cut-off events. [2024-06-28 01:47:16,562 INFO L125 PetriNetUnfolderBase]: For 401531/401531 co-relation queries the response was YES. [2024-06-28 01:47:16,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63523 conditions, 7901 events. 4697/7901 cut-off events. For 401531/401531 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 56157 event pairs, 1266 based on Foata normal form. 2/7859 useless extension candidates. Maximal degree in co-relation 63242. Up to 6429 conditions per place. [2024-06-28 01:47:16,703 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 676 selfloop transitions, 185 changer transitions 0/867 dead transitions. [2024-06-28 01:47:16,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 867 transitions, 19990 flow [2024-06-28 01:47:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:16,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:47:16,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:47:16,705 INFO L175 Difference]: Start difference. First operand has 613 places, 807 transitions, 17145 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:47:16,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 867 transitions, 19990 flow [2024-06-28 01:47:22,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 867 transitions, 19396 flow, removed 196 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:22,683 INFO L231 Difference]: Finished difference. Result has 619 places, 823 transitions, 17676 flow [2024-06-28 01:47:22,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=16617, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=624, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17676, PETRI_PLACES=619, PETRI_TRANSITIONS=823} [2024-06-28 01:47:22,684 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 578 predicate places. [2024-06-28 01:47:22,684 INFO L495 AbstractCegarLoop]: Abstraction has has 619 places, 823 transitions, 17676 flow [2024-06-28 01:47:22,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:22,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:22,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:47:22,685 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -753669519, now seen corresponding path program 25 times [2024-06-28 01:47:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:22,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759597609] [2024-06-28 01:47:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:23,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:23,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:23,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759597609] [2024-06-28 01:47:23,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759597609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:23,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:23,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167876372] [2024-06-28 01:47:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:23,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:23,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:23,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:23,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:23,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 823 transitions, 17676 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:23,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:23,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:23,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:26,676 INFO L124 PetriNetUnfolderBase]: 4718/7940 cut-off events. [2024-06-28 01:47:26,676 INFO L125 PetriNetUnfolderBase]: For 396739/396739 co-relation queries the response was YES. [2024-06-28 01:47:26,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64502 conditions, 7940 events. 4718/7940 cut-off events. For 396739/396739 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 56434 event pairs, 1346 based on Foata normal form. 2/7898 useless extension candidates. Maximal degree in co-relation 64218. Up to 6725 conditions per place. [2024-06-28 01:47:26,798 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 648 selfloop transitions, 217 changer transitions 0/871 dead transitions. [2024-06-28 01:47:26,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 871 transitions, 20330 flow [2024-06-28 01:47:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:26,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:26,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:47:26,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:47:26,821 INFO L175 Difference]: Start difference. First operand has 619 places, 823 transitions, 17676 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:47:26,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 871 transitions, 20330 flow [2024-06-28 01:47:32,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 871 transitions, 20055 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:32,926 INFO L231 Difference]: Finished difference. Result has 623 places, 829 transitions, 18305 flow [2024-06-28 01:47:32,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17409, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=823, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18305, PETRI_PLACES=623, PETRI_TRANSITIONS=829} [2024-06-28 01:47:32,926 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 582 predicate places. [2024-06-28 01:47:32,927 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 829 transitions, 18305 flow [2024-06-28 01:47:32,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:32,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:32,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:32,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:47:32,927 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:32,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:32,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1316093227, now seen corresponding path program 26 times [2024-06-28 01:47:32,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:32,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771272470] [2024-06-28 01:47:32,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:32,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:33,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:33,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771272470] [2024-06-28 01:47:33,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771272470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:33,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:33,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914855802] [2024-06-28 01:47:33,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:33,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:33,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:33,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:33,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:33,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 829 transitions, 18305 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:33,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:33,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:33,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:37,054 INFO L124 PetriNetUnfolderBase]: 4715/7937 cut-off events. [2024-06-28 01:47:37,054 INFO L125 PetriNetUnfolderBase]: For 374441/374441 co-relation queries the response was YES. [2024-06-28 01:47:37,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64569 conditions, 7937 events. 4715/7937 cut-off events. For 374441/374441 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 56385 event pairs, 1392 based on Foata normal form. 2/7895 useless extension candidates. Maximal degree in co-relation 64284. Up to 7010 conditions per place. [2024-06-28 01:47:37,168 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 699 selfloop transitions, 167 changer transitions 0/872 dead transitions. [2024-06-28 01:47:37,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 872 transitions, 20295 flow [2024-06-28 01:47:37,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:47:37,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:47:37,169 INFO L175 Difference]: Start difference. First operand has 623 places, 829 transitions, 18305 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:47:37,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 872 transitions, 20295 flow [2024-06-28 01:47:42,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 872 transitions, 19391 flow, removed 311 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:42,762 INFO L231 Difference]: Finished difference. Result has 625 places, 831 transitions, 17847 flow [2024-06-28 01:47:42,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17407, PETRI_DIFFERENCE_MINUEND_PLACES=613, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17847, PETRI_PLACES=625, PETRI_TRANSITIONS=831} [2024-06-28 01:47:42,763 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 584 predicate places. [2024-06-28 01:47:42,763 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 831 transitions, 17847 flow [2024-06-28 01:47:42,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:42,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:42,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:42,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:47:42,763 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:42,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:42,763 INFO L85 PathProgramCache]: Analyzing trace with hash -892833429, now seen corresponding path program 27 times [2024-06-28 01:47:42,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620383831] [2024-06-28 01:47:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:43,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:43,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:43,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620383831] [2024-06-28 01:47:43,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620383831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:43,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:43,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:43,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646249828] [2024-06-28 01:47:43,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:43,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:43,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:43,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:43,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:43,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:43,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 831 transitions, 17847 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:43,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:43,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:46,925 INFO L124 PetriNetUnfolderBase]: 4730/7948 cut-off events. [2024-06-28 01:47:46,926 INFO L125 PetriNetUnfolderBase]: For 374447/374447 co-relation queries the response was YES. [2024-06-28 01:47:47,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64498 conditions, 7948 events. 4730/7948 cut-off events. For 374447/374447 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 56383 event pairs, 1238 based on Foata normal form. 2/7905 useless extension candidates. Maximal degree in co-relation 64212. Up to 6258 conditions per place. [2024-06-28 01:47:47,062 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 644 selfloop transitions, 224 changer transitions 0/874 dead transitions. [2024-06-28 01:47:47,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 874 transitions, 19957 flow [2024-06-28 01:47:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:47:47,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:47:47,063 INFO L175 Difference]: Start difference. First operand has 625 places, 831 transitions, 17847 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:47:47,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 874 transitions, 19957 flow [2024-06-28 01:47:52,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 874 transitions, 19605 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:52,523 INFO L231 Difference]: Finished difference. Result has 627 places, 833 transitions, 18123 flow [2024-06-28 01:47:52,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17495, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=831, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=222, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=607, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18123, PETRI_PLACES=627, PETRI_TRANSITIONS=833} [2024-06-28 01:47:52,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 586 predicate places. [2024-06-28 01:47:52,523 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 833 transitions, 18123 flow [2024-06-28 01:47:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:52,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:52,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:52,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:47:52,524 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:52,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:52,524 INFO L85 PathProgramCache]: Analyzing trace with hash -892839939, now seen corresponding path program 28 times [2024-06-28 01:47:52,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:52,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177731791] [2024-06-28 01:47:52,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:52,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:53,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:53,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:53,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177731791] [2024-06-28 01:47:53,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177731791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:53,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:53,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953282292] [2024-06-28 01:47:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:53,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:53,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:53,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:53,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:53,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:53,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 833 transitions, 18123 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:53,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:53,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:56,758 INFO L124 PetriNetUnfolderBase]: 4745/7974 cut-off events. [2024-06-28 01:47:56,758 INFO L125 PetriNetUnfolderBase]: For 381934/381934 co-relation queries the response was YES. [2024-06-28 01:47:56,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65242 conditions, 7974 events. 4745/7974 cut-off events. For 381934/381934 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 56634 event pairs, 1235 based on Foata normal form. 2/7931 useless extension candidates. Maximal degree in co-relation 64956. Up to 6201 conditions per place. [2024-06-28 01:47:56,977 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 640 selfloop transitions, 230 changer transitions 0/876 dead transitions. [2024-06-28 01:47:56,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 876 transitions, 20239 flow [2024-06-28 01:47:56,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:56,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:56,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:47:56,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:47:56,978 INFO L175 Difference]: Start difference. First operand has 627 places, 833 transitions, 18123 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:47:56,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 876 transitions, 20239 flow [2024-06-28 01:48:02,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 628 places, 876 transitions, 19643 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:02,251 INFO L231 Difference]: Finished difference. Result has 629 places, 835 transitions, 18171 flow [2024-06-28 01:48:02,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17527, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18171, PETRI_PLACES=629, PETRI_TRANSITIONS=835} [2024-06-28 01:48:02,252 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 588 predicate places. [2024-06-28 01:48:02,252 INFO L495 AbstractCegarLoop]: Abstraction has has 629 places, 835 transitions, 18171 flow [2024-06-28 01:48:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:02,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:02,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:02,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:48:02,252 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:02,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:02,252 INFO L85 PathProgramCache]: Analyzing trace with hash -893012919, now seen corresponding path program 29 times [2024-06-28 01:48:02,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:02,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040067062] [2024-06-28 01:48:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:03,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040067062] [2024-06-28 01:48:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040067062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:48:03,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709644040] [2024-06-28 01:48:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:03,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:48:03,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:03,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:48:03,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:48:03,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:03,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 835 transitions, 18171 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:03,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:03,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:03,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:06,499 INFO L124 PetriNetUnfolderBase]: 4760/7999 cut-off events. [2024-06-28 01:48:06,499 INFO L125 PetriNetUnfolderBase]: For 387043/387043 co-relation queries the response was YES. [2024-06-28 01:48:06,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65477 conditions, 7999 events. 4760/7999 cut-off events. For 387043/387043 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 56790 event pairs, 1222 based on Foata normal form. 2/7956 useless extension candidates. Maximal degree in co-relation 65190. Up to 6098 conditions per place. [2024-06-28 01:48:06,618 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 636 selfloop transitions, 236 changer transitions 0/878 dead transitions. [2024-06-28 01:48:06,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 878 transitions, 20293 flow [2024-06-28 01:48:06,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:06,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-28 01:48:06,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-28 01:48:06,620 INFO L175 Difference]: Start difference. First operand has 629 places, 835 transitions, 18171 flow. Second operand 11 states and 192 transitions. [2024-06-28 01:48:06,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 878 transitions, 20293 flow [2024-06-28 01:48:12,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 878 transitions, 19679 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:12,704 INFO L231 Difference]: Finished difference. Result has 631 places, 837 transitions, 18217 flow [2024-06-28 01:48:12,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17557, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=835, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18217, PETRI_PLACES=631, PETRI_TRANSITIONS=837} [2024-06-28 01:48:12,704 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 590 predicate places. [2024-06-28 01:48:12,704 INFO L495 AbstractCegarLoop]: Abstraction has has 631 places, 837 transitions, 18217 flow [2024-06-28 01:48:12,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:12,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:12,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:12,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:48:12,705 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:12,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:12,705 INFO L85 PathProgramCache]: Analyzing trace with hash -897481569, now seen corresponding path program 30 times [2024-06-28 01:48:12,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:12,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106798529] [2024-06-28 01:48:12,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:12,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:13,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:13,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:13,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106798529] [2024-06-28 01:48:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106798529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:13,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:13,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:48:13,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286292474] [2024-06-28 01:48:13,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:48:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:48:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:48:13,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:13,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 837 transitions, 18217 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:13,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:13,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:13,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:16,844 INFO L124 PetriNetUnfolderBase]: 4871/8192 cut-off events. [2024-06-28 01:48:16,845 INFO L125 PetriNetUnfolderBase]: For 541338/541338 co-relation queries the response was YES. [2024-06-28 01:48:16,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69128 conditions, 8192 events. 4871/8192 cut-off events. For 541338/541338 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 58508 event pairs, 1233 based on Foata normal form. 2/8149 useless extension candidates. Maximal degree in co-relation 68840. Up to 5516 conditions per place. [2024-06-28 01:48:16,963 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 619 selfloop transitions, 262 changer transitions 0/887 dead transitions. [2024-06-28 01:48:16,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 887 transitions, 20869 flow [2024-06-28 01:48:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-28 01:48:16,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-28 01:48:16,964 INFO L175 Difference]: Start difference. First operand has 631 places, 837 transitions, 18217 flow. Second operand 11 states and 194 transitions. [2024-06-28 01:48:16,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 887 transitions, 20869 flow [2024-06-28 01:48:24,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 887 transitions, 20239 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:24,238 INFO L231 Difference]: Finished difference. Result has 633 places, 841 transitions, 18483 flow [2024-06-28 01:48:24,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17587, PETRI_DIFFERENCE_MINUEND_PLACES=622, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18483, PETRI_PLACES=633, PETRI_TRANSITIONS=841} [2024-06-28 01:48:24,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 592 predicate places. [2024-06-28 01:48:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 841 transitions, 18483 flow [2024-06-28 01:48:24,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:24,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:24,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:24,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:48:24,239 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:24,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1091474525, now seen corresponding path program 31 times [2024-06-28 01:48:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:24,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686323543] [2024-06-28 01:48:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:25,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:25,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686323543] [2024-06-28 01:48:25,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686323543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:25,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:25,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:48:25,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60898448] [2024-06-28 01:48:25,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:48:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:48:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:48:25,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:25,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 841 transitions, 18483 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:25,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:25,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:25,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:28,662 INFO L124 PetriNetUnfolderBase]: 4886/8217 cut-off events. [2024-06-28 01:48:28,662 INFO L125 PetriNetUnfolderBase]: For 534345/534345 co-relation queries the response was YES. [2024-06-28 01:48:28,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69501 conditions, 8217 events. 4886/8217 cut-off events. For 534345/534345 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 58850 event pairs, 1157 based on Foata normal form. 2/8174 useless extension candidates. Maximal degree in co-relation 69212. Up to 6526 conditions per place. [2024-06-28 01:48:28,784 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 634 selfloop transitions, 244 changer transitions 0/884 dead transitions. [2024-06-28 01:48:28,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 643 places, 884 transitions, 20629 flow [2024-06-28 01:48:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:28,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:48:28,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:48:28,785 INFO L175 Difference]: Start difference. First operand has 633 places, 841 transitions, 18483 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:48:28,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 643 places, 884 transitions, 20629 flow [2024-06-28 01:48:36,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 884 transitions, 20090 flow, removed 127 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:36,964 INFO L231 Difference]: Finished difference. Result has 636 places, 843 transitions, 18628 flow [2024-06-28 01:48:36,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=17982, PETRI_DIFFERENCE_MINUEND_PLACES=625, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18628, PETRI_PLACES=636, PETRI_TRANSITIONS=843} [2024-06-28 01:48:36,965 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 595 predicate places. [2024-06-28 01:48:36,965 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 843 transitions, 18628 flow [2024-06-28 01:48:36,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:36,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:36,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:36,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:48:36,965 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:36,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash -437535899, now seen corresponding path program 32 times [2024-06-28 01:48:36,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:36,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677916818] [2024-06-28 01:48:36,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:36,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:37,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:37,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:37,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677916818] [2024-06-28 01:48:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677916818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:37,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445584778] [2024-06-28 01:48:37,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:37,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:37,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:37,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:37,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 843 transitions, 18628 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:37,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:37,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:37,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:41,011 INFO L124 PetriNetUnfolderBase]: 4901/8242 cut-off events. [2024-06-28 01:48:41,011 INFO L125 PetriNetUnfolderBase]: For 518051/518051 co-relation queries the response was YES. [2024-06-28 01:48:41,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69815 conditions, 8242 events. 4901/8242 cut-off events. For 518051/518051 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 59040 event pairs, 1174 based on Foata normal form. 2/8199 useless extension candidates. Maximal degree in co-relation 69525. Up to 6551 conditions per place. [2024-06-28 01:48:41,138 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 647 selfloop transitions, 233 changer transitions 0/886 dead transitions. [2024-06-28 01:48:41,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 886 transitions, 20744 flow [2024-06-28 01:48:41,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:41,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:48:41,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:48:41,139 INFO L175 Difference]: Start difference. First operand has 636 places, 843 transitions, 18628 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:48:41,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 886 transitions, 20744 flow [2024-06-28 01:48:48,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 886 transitions, 20125 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-28 01:48:48,698 INFO L231 Difference]: Finished difference. Result has 637 places, 845 transitions, 18637 flow [2024-06-28 01:48:48,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18009, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=843, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18637, PETRI_PLACES=637, PETRI_TRANSITIONS=845} [2024-06-28 01:48:48,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 596 predicate places. [2024-06-28 01:48:48,699 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 845 transitions, 18637 flow [2024-06-28 01:48:48,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:48,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:48,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:48:48,699 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:48:48,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash -437542409, now seen corresponding path program 33 times [2024-06-28 01:48:48,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:48,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847397015] [2024-06-28 01:48:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:48,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:49,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:49,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847397015] [2024-06-28 01:48:49,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847397015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:49,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:49,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:49,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992544391] [2024-06-28 01:48:49,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:49,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:49,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:49,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:49,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:48:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 845 transitions, 18637 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:48:49,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:52,718 INFO L124 PetriNetUnfolderBase]: 4916/8267 cut-off events. [2024-06-28 01:48:52,718 INFO L125 PetriNetUnfolderBase]: For 520735/520735 co-relation queries the response was YES. [2024-06-28 01:48:52,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69895 conditions, 8267 events. 4916/8267 cut-off events. For 520735/520735 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 59256 event pairs, 1165 based on Foata normal form. 2/8224 useless extension candidates. Maximal degree in co-relation 69605. Up to 6494 conditions per place. [2024-06-28 01:48:52,843 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 643 selfloop transitions, 239 changer transitions 0/888 dead transitions. [2024-06-28 01:48:52,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 647 places, 888 transitions, 20759 flow [2024-06-28 01:48:52,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-28 01:48:52,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-28 01:48:52,845 INFO L175 Difference]: Start difference. First operand has 637 places, 845 transitions, 18637 flow. Second operand 11 states and 189 transitions. [2024-06-28 01:48:52,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 647 places, 888 transitions, 20759 flow [2024-06-28 01:49:00,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 888 transitions, 20292 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:49:00,217 INFO L231 Difference]: Finished difference. Result has 639 places, 847 transitions, 18814 flow [2024-06-28 01:49:00,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18170, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=845, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=18814, PETRI_PLACES=639, PETRI_TRANSITIONS=847} [2024-06-28 01:49:00,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 598 predicate places. [2024-06-28 01:49:00,218 INFO L495 AbstractCegarLoop]: Abstraction has has 639 places, 847 transitions, 18814 flow [2024-06-28 01:49:00,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:00,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:00,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:00,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:49:00,218 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:00,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:00,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1006977901, now seen corresponding path program 34 times [2024-06-28 01:49:00,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:00,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698180250] [2024-06-28 01:49:00,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:00,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:01,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:01,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698180250] [2024-06-28 01:49:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698180250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:01,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:01,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:49:01,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990211765] [2024-06-28 01:49:01,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:01,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:49:01,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:01,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:49:01,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:49:01,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:01,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 847 transitions, 18814 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:01,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:01,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:01,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:04,429 INFO L124 PetriNetUnfolderBase]: 4949/8322 cut-off events. [2024-06-28 01:49:04,429 INFO L125 PetriNetUnfolderBase]: For 552088/552088 co-relation queries the response was YES. [2024-06-28 01:49:04,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71024 conditions, 8322 events. 4949/8322 cut-off events. For 552088/552088 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 59697 event pairs, 1144 based on Foata normal form. 2/8279 useless extension candidates. Maximal degree in co-relation 70734. Up to 6247 conditions per place. [2024-06-28 01:49:04,573 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 637 selfloop transitions, 254 changer transitions 0/897 dead transitions. [2024-06-28 01:49:04,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 897 transitions, 21448 flow [2024-06-28 01:49:04,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-28 01:49:04,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-28 01:49:04,575 INFO L175 Difference]: Start difference. First operand has 639 places, 847 transitions, 18814 flow. Second operand 11 states and 191 transitions. [2024-06-28 01:49:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 897 transitions, 21448 flow [2024-06-28 01:49:12,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 897 transitions, 20827 flow, removed 73 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:13,005 INFO L231 Difference]: Finished difference. Result has 640 places, 851 transitions, 19031 flow [2024-06-28 01:49:13,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18195, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19031, PETRI_PLACES=640, PETRI_TRANSITIONS=851} [2024-06-28 01:49:13,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 599 predicate places. [2024-06-28 01:49:13,005 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 851 transitions, 19031 flow [2024-06-28 01:49:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:13,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:49:13,006 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:13,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash -437715389, now seen corresponding path program 35 times [2024-06-28 01:49:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:13,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466769589] [2024-06-28 01:49:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:13,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:13,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466769589] [2024-06-28 01:49:13,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466769589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:13,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319758802] [2024-06-28 01:49:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:13,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:13,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:13,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:13,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:13,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 851 transitions, 19031 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:13,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:13,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:13,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:16,996 INFO L124 PetriNetUnfolderBase]: 4946/8317 cut-off events. [2024-06-28 01:49:16,996 INFO L125 PetriNetUnfolderBase]: For 525097/525097 co-relation queries the response was YES. [2024-06-28 01:49:17,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70536 conditions, 8317 events. 4946/8317 cut-off events. For 525097/525097 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 59660 event pairs, 1135 based on Foata normal form. 2/8274 useless extension candidates. Maximal degree in co-relation 70246. Up to 5996 conditions per place. [2024-06-28 01:49:17,128 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 632 selfloop transitions, 259 changer transitions 0/897 dead transitions. [2024-06-28 01:49:17,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 897 transitions, 21347 flow [2024-06-28 01:49:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:49:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:49:17,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-28 01:49:17,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-28 01:49:17,129 INFO L175 Difference]: Start difference. First operand has 640 places, 851 transitions, 19031 flow. Second operand 11 states and 193 transitions. [2024-06-28 01:49:17,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 897 transitions, 21347 flow [2024-06-28 01:49:25,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 897 transitions, 20990 flow, removed 76 selfloop flow, removed 7 redundant places. [2024-06-28 01:49:25,566 INFO L231 Difference]: Finished difference. Result has 644 places, 851 transitions, 19202 flow [2024-06-28 01:49:25,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=18676, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=851, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=19202, PETRI_PLACES=644, PETRI_TRANSITIONS=851} [2024-06-28 01:49:25,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 603 predicate places. [2024-06-28 01:49:25,566 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 851 transitions, 19202 flow [2024-06-28 01:49:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:25,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:25,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:25,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:49:25,567 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:49:25,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash -998697181, now seen corresponding path program 36 times [2024-06-28 01:49:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689479771] [2024-06-28 01:49:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:26,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:26,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689479771] [2024-06-28 01:49:26,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689479771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:26,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:26,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:49:26,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577990403] [2024-06-28 01:49:26,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:26,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:49:26,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:49:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:49:26,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:49:26,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 851 transitions, 19202 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:26,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:26,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:49:26,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand