./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.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/rfi000_tso.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/rfi000_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_tso.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 00:52:18,596 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:52:18,661 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:52:18,667 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:52:18,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:52:18,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:52:18,695 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:52:18,696 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:52:18,696 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:52:18,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:52:18,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:52:18,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:52:18,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:52:18,702 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:52:18,702 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:52:18,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:52:18,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:52:18,703 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:52:18,703 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:52:18,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:52:18,704 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:52:18,704 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:52:18,705 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:52:18,705 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:52:18,705 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:52:18,705 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:52:18,705 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:52:18,706 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:52:18,706 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:52:18,706 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:52:18,707 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:52:18,707 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:52:18,707 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:18,708 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:52:18,708 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:52:18,708 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:52:18,708 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:52:18,708 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:52:18,709 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:52:18,709 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:52:18,709 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:52:18,709 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:52:18,709 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:52:18,710 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 00:52:18,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:52:18,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:52:18,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:52:18,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:52:18,947 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:52:18,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-28 00:52:20,107 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:52:20,287 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:52:20,287 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_tso.i [2024-06-28 00:52:20,299 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4393e9ea4/2bd60d4d70f749e7986de590171887c9/FLAG07c2748cc [2024-06-28 00:52:20,309 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4393e9ea4/2bd60d4d70f749e7986de590171887c9 [2024-06-28 00:52:20,311 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:52:20,315 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:52:20,316 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_tso.yml/witness.yml [2024-06-28 00:52:20,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:52:20,421 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:52:20,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:20,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:52:20,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:52:20,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (1/2) ... [2024-06-28 00:52:20,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4347d4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:52:20" (1/2) ... [2024-06-28 00:52:20,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2794f8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,430 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4347d4eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20, skipping insertion in model container [2024-06-28 00:52:20,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:20" (2/2) ... [2024-06-28 00:52:20,430 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:52:20,489 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:52:20,490 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:52:20,490 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((! multithreaded || y$r_buff0_thd1 == (_Bool)0) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 00:52:20,490 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:52:20,491 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-28 00:52:20,532 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:52:20,649 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/rfi000_tso.i[944,957] [2024-06-28 00:52:20,758 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:20,765 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 00:52:20,801 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/rfi000_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:52:20,898 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:52:20,925 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:52:20,925 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:52:20 WrapperNode [2024-06-28 00:52:20,925 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:52:20,926 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:20,926 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:52:20,926 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:52:20,932 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 12:52:20" (1/1) ... [2024-06-28 00:52:20,945 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 12:52:20" (1/1) ... [2024-06-28 00:52:20,974 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 172 [2024-06-28 00:52:20,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:52:20,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:52:20,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:52:20,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:52:20,984 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 12:52:20" (1/1) ... [2024-06-28 00:52:20,984 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 12:52:20" (1/1) ... [2024-06-28 00:52:20,988 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,012 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 00:52:21,012 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,012 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,020 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,021 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,023 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,024 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,027 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:52:21,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:52:21,028 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:52:21,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:52:21,029 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 12:52:20" (1/1) ... [2024-06-28 00:52:21,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:52:21,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:52:21,070 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 00:52:21,076 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 00:52:21,099 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:52:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:52:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:52:21,100 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:52:21,100 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:52:21,101 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:52:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:52:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:52:21,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:52:21,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:52:21,102 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 00:52:21,209 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:52:21,210 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:52:21,502 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:52:21,503 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:52:21,653 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:52:21,653 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:52:21,653 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:21 BoogieIcfgContainer [2024-06-28 00:52:21,654 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:52:21,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:52:21,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:52:21,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:52:21,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:52:20" (1/4) ... [2024-06-28 00:52:21,662 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc74374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:52:21, skipping insertion in model container [2024-06-28 00:52:21,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:52:20" (2/4) ... [2024-06-28 00:52:21,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc74374 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:21, skipping insertion in model container [2024-06-28 00:52:21,663 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 12:52:20" (3/4) ... [2024-06-28 00:52:21,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fc74374 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:52:21, skipping insertion in model container [2024-06-28 00:52:21,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:52:21" (4/4) ... [2024-06-28 00:52:21,665 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_tso.i [2024-06-28 00:52:21,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:52:21,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 00:52:21,682 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:52:21,723 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:52:21,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 00:52:21,798 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 00:52:21,799 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:21,801 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 4. Compared 52 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 00:52:21,801 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 00:52:21,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 00:52:21,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:52:21,825 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;@1826a76a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:52:21,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 00:52:21,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:52:21,855 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 00:52:21,855 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:52:21,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:21,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:52:21,856 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 00:52:21,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:21,894 INFO L85 PathProgramCache]: Analyzing trace with hash 385587932, now seen corresponding path program 1 times [2024-06-28 00:52:21,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:21,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594471217] [2024-06-28 00:52:21,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:21,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:22,675 INFO 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 00:52:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594471217] [2024-06-28 00:52:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594471217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:22,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:22,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:22,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652433423] [2024-06-28 00:52:22,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:22,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:22,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:22,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 00:52:22,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:22,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:22,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 00:52:22,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:23,104 INFO L124 PetriNetUnfolderBase]: 708/1330 cut-off events. [2024-06-28 00:52:23,105 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 00:52:23,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 1330 events. 708/1330 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7139 event pairs, 566 based on Foata normal form. 55/1275 useless extension candidates. Maximal degree in co-relation 2500. Up to 1153 conditions per place. [2024-06-28 00:52:23,116 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 34 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2024-06-28 00:52:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 173 flow [2024-06-28 00:52:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:23,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:23,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2024-06-28 00:52:23,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6396396396396397 [2024-06-28 00:52:23,128 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 71 transitions. [2024-06-28 00:52:23,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 173 flow [2024-06-28 00:52:23,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:23,133 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 93 flow [2024-06-28 00:52:23,134 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=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-06-28 00:52:23,137 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 00:52:23,137 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 93 flow [2024-06-28 00:52:23,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:23,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:23,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:52:23,138 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 00:52:23,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:23,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1182849339, now seen corresponding path program 1 times [2024-06-28 00:52:23,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:23,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817681532] [2024-06-28 00:52:23,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:23,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:23,530 INFO 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 00:52:23,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:23,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817681532] [2024-06-28 00:52:23,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817681532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:23,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:52:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754892626] [2024-06-28 00:52:23,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:23,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:52:23,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:23,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:52:23,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:52:23,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 00:52:23,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:23,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 00:52:23,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:23,757 INFO L124 PetriNetUnfolderBase]: 705/1307 cut-off events. [2024-06-28 00:52:23,757 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2024-06-28 00:52:23,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1307 events. 705/1307 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 7058 event pairs, 405 based on Foata normal form. 2/1211 useless extension candidates. Maximal degree in co-relation 2665. Up to 1138 conditions per place. [2024-06-28 00:52:23,762 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 00:52:23,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 233 flow [2024-06-28 00:52:23,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:52:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:52:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 86 transitions. [2024-06-28 00:52:23,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.581081081081081 [2024-06-28 00:52:23,764 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 93 flow. Second operand 4 states and 86 transitions. [2024-06-28 00:52:23,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 233 flow [2024-06-28 00:52:23,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 54 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:23,766 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 144 flow [2024-06-28 00:52:23,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2024-06-28 00:52:23,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 5 predicate places. [2024-06-28 00:52:23,767 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 144 flow [2024-06-28 00:52:23,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:23,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:23,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:23,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:52:23,768 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 00:52:23,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:23,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1986375027, now seen corresponding path program 1 times [2024-06-28 00:52:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313080376] [2024-06-28 00:52:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:24,109 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 00:52:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:24,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313080376] [2024-06-28 00:52:24,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313080376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:24,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:24,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:52:24,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227590320] [2024-06-28 00:52:24,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:24,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:52:24,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:24,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:52:24,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:52:24,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 00:52:24,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:24,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 00:52:24,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:24,357 INFO L124 PetriNetUnfolderBase]: 727/1355 cut-off events. [2024-06-28 00:52:24,358 INFO L125 PetriNetUnfolderBase]: For 480/480 co-relation queries the response was YES. [2024-06-28 00:52:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1355 events. 727/1355 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 7355 event pairs, 217 based on Foata normal form. 6/1246 useless extension candidates. Maximal degree in co-relation 2978. Up to 1082 conditions per place. [2024-06-28 00:52:24,363 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 51 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2024-06-28 00:52:24,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 78 transitions, 384 flow [2024-06-28 00:52:24,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:24,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 00:52:24,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2024-06-28 00:52:24,365 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 144 flow. Second operand 5 states and 116 transitions. [2024-06-28 00:52:24,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 78 transitions, 384 flow [2024-06-28 00:52:24,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 382 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:24,367 INFO L231 Difference]: Finished difference. Result has 53 places, 56 transitions, 264 flow [2024-06-28 00:52:24,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=53, PETRI_TRANSITIONS=56} [2024-06-28 00:52:24,368 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2024-06-28 00:52:24,368 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 56 transitions, 264 flow [2024-06-28 00:52:24,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:24,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:24,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:52:24,369 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 00:52:24,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1467949132, now seen corresponding path program 1 times [2024-06-28 00:52:24,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:24,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895769949] [2024-06-28 00:52:24,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:24,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:24,420 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 00:52:24,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:24,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895769949] [2024-06-28 00:52:24,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895769949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:24,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:24,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:52:24,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198029272] [2024-06-28 00:52:24,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:24,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:52:24,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:24,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:52:24,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:52:24,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 37 [2024-06-28 00:52:24,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 56 transitions, 264 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:24,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 37 [2024-06-28 00:52:24,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:24,524 INFO L124 PetriNetUnfolderBase]: 322/756 cut-off events. [2024-06-28 00:52:24,524 INFO L125 PetriNetUnfolderBase]: For 227/265 co-relation queries the response was YES. [2024-06-28 00:52:24,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1650 conditions, 756 events. 322/756 cut-off events. For 227/265 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4613 event pairs, 91 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 1630. Up to 464 conditions per place. [2024-06-28 00:52:24,529 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 29 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2024-06-28 00:52:24,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 60 transitions, 333 flow [2024-06-28 00:52:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:52:24,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:52:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 78 transitions. [2024-06-28 00:52:24,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-06-28 00:52:24,531 INFO L175 Difference]: Start difference. First operand has 53 places, 56 transitions, 264 flow. Second operand 3 states and 78 transitions. [2024-06-28 00:52:24,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 60 transitions, 333 flow [2024-06-28 00:52:24,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 323 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-06-28 00:52:24,538 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 247 flow [2024-06-28 00:52:24,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2024-06-28 00:52:24,539 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 00:52:24,539 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 247 flow [2024-06-28 00:52:24,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:24,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:24,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:24,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:52:24,540 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 00:52:24,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:24,540 INFO L85 PathProgramCache]: Analyzing trace with hash -738709496, now seen corresponding path program 1 times [2024-06-28 00:52:24,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:24,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544631150] [2024-06-28 00:52:24,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:24,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:25,250 INFO 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 00:52:25,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:25,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544631150] [2024-06-28 00:52:25,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544631150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:25,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:25,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:25,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382900240] [2024-06-28 00:52:25,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:25,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:25,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:25,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 00:52:25,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:25,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 00:52:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:25,521 INFO L124 PetriNetUnfolderBase]: 644/1212 cut-off events. [2024-06-28 00:52:25,522 INFO L125 PetriNetUnfolderBase]: For 1044/1044 co-relation queries the response was YES. [2024-06-28 00:52:25,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 1212 events. 644/1212 cut-off events. For 1044/1044 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6451 event pairs, 126 based on Foata normal form. 6/1168 useless extension candidates. Maximal degree in co-relation 3150. Up to 915 conditions per place. [2024-06-28 00:52:25,528 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 52 selfloop transitions, 19 changer transitions 1/80 dead transitions. [2024-06-28 00:52:25,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 80 transitions, 471 flow [2024-06-28 00:52:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 128 transitions. [2024-06-28 00:52:25,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765765765765766 [2024-06-28 00:52:25,530 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 247 flow. Second operand 6 states and 128 transitions. [2024-06-28 00:52:25,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 80 transitions, 471 flow [2024-06-28 00:52:25,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 80 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:25,533 INFO L231 Difference]: Finished difference. Result has 57 places, 53 transitions, 293 flow [2024-06-28 00:52:25,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=57, PETRI_TRANSITIONS=53} [2024-06-28 00:52:25,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 00:52:25,534 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 53 transitions, 293 flow [2024-06-28 00:52:25,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:25,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:52:25,535 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 00:52:25,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:25,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1738217071, now seen corresponding path program 1 times [2024-06-28 00:52:25,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:25,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364093116] [2024-06-28 00:52:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:25,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364093116] [2024-06-28 00:52:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364093116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:52:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081639076] [2024-06-28 00:52:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:25,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:52:25,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:52:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:52:25,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:25,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 53 transitions, 293 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:25,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:25,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:25,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:26,257 INFO L124 PetriNetUnfolderBase]: 649/1217 cut-off events. [2024-06-28 00:52:26,258 INFO L125 PetriNetUnfolderBase]: For 1358/1358 co-relation queries the response was YES. [2024-06-28 00:52:26,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3397 conditions, 1217 events. 649/1217 cut-off events. For 1358/1358 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6329 event pairs, 215 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 3373. Up to 1046 conditions per place. [2024-06-28 00:52:26,266 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 52 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 00:52:26,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 457 flow [2024-06-28 00:52:26,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:52:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:52:26,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-06-28 00:52:26,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 00:52:26,268 INFO L175 Difference]: Start difference. First operand has 57 places, 53 transitions, 293 flow. Second operand 5 states and 85 transitions. [2024-06-28 00:52:26,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 457 flow [2024-06-28 00:52:26,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 413 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:26,271 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 293 flow [2024-06-28 00:52:26,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=57, PETRI_TRANSITIONS=55} [2024-06-28 00:52:26,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-28 00:52:26,272 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 293 flow [2024-06-28 00:52:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:26,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:26,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:26,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:52:26,273 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 00:52:26,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1960943492, now seen corresponding path program 1 times [2024-06-28 00:52:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827571072] [2024-06-28 00:52:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:26,676 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 00:52:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827571072] [2024-06-28 00:52:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827571072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:26,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:26,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:26,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603438012] [2024-06-28 00:52:26,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:26,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:26,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:26,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:26,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:26,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:26,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 293 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:26,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:26,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:26,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:26,996 INFO L124 PetriNetUnfolderBase]: 652/1222 cut-off events. [2024-06-28 00:52:26,996 INFO L125 PetriNetUnfolderBase]: For 1605/1605 co-relation queries the response was YES. [2024-06-28 00:52:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3408 conditions, 1222 events. 652/1222 cut-off events. For 1605/1605 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6337 event pairs, 260 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 3382. Up to 1050 conditions per place. [2024-06-28 00:52:27,003 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 62 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-28 00:52:27,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 78 transitions, 530 flow [2024-06-28 00:52:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:27,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-06-28 00:52:27,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-28 00:52:27,006 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 293 flow. Second operand 6 states and 97 transitions. [2024-06-28 00:52:27,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 78 transitions, 530 flow [2024-06-28 00:52:27,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 78 transitions, 503 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:27,009 INFO L231 Difference]: Finished difference. Result has 62 places, 63 transitions, 372 flow [2024-06-28 00:52:27,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=62, PETRI_TRANSITIONS=63} [2024-06-28 00:52:27,011 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-28 00:52:27,011 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 63 transitions, 372 flow [2024-06-28 00:52:27,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:27,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:27,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:52:27,011 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 00:52:27,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:27,012 INFO L85 PathProgramCache]: Analyzing trace with hash -665427220, now seen corresponding path program 1 times [2024-06-28 00:52:27,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:27,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501342928] [2024-06-28 00:52:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:27,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:27,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:27,425 INFO 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 00:52:27,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:27,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501342928] [2024-06-28 00:52:27,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501342928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:27,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:27,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:27,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277221634] [2024-06-28 00:52:27,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:27,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:27,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:27,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:27,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:27,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:27,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 63 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:27,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:27,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:27,833 INFO L124 PetriNetUnfolderBase]: 658/1232 cut-off events. [2024-06-28 00:52:27,833 INFO L125 PetriNetUnfolderBase]: For 2158/2158 co-relation queries the response was YES. [2024-06-28 00:52:27,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 1232 events. 658/1232 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6453 event pairs, 166 based on Foata normal form. 3/1185 useless extension candidates. Maximal degree in co-relation 3680. Up to 954 conditions per place. [2024-06-28 00:52:27,839 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 58 selfloop transitions, 22 changer transitions 0/86 dead transitions. [2024-06-28 00:52:27,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 86 transitions, 616 flow [2024-06-28 00:52:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:27,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:27,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 00:52:27,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 00:52:27,842 INFO L175 Difference]: Start difference. First operand has 62 places, 63 transitions, 372 flow. Second operand 6 states and 108 transitions. [2024-06-28 00:52:27,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 86 transitions, 616 flow [2024-06-28 00:52:27,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 601 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:27,848 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 431 flow [2024-06-28 00:52:27,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2024-06-28 00:52:27,851 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-28 00:52:27,851 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 431 flow [2024-06-28 00:52:27,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:27,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:27,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:27,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:52:27,852 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 00:52:27,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:27,853 INFO L85 PathProgramCache]: Analyzing trace with hash -315627250, now seen corresponding path program 2 times [2024-06-28 00:52:27,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:27,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388351892] [2024-06-28 00:52:27,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:28,312 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 00:52:28,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:28,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388351892] [2024-06-28 00:52:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388351892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:28,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060569148] [2024-06-28 00:52:28,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:28,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:28,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:28,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:28,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:28,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:28,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:28,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:28,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:28,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:28,758 INFO L124 PetriNetUnfolderBase]: 653/1227 cut-off events. [2024-06-28 00:52:28,759 INFO L125 PetriNetUnfolderBase]: For 2575/2581 co-relation queries the response was YES. [2024-06-28 00:52:28,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3795 conditions, 1227 events. 653/1227 cut-off events. For 2575/2581 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6408 event pairs, 187 based on Foata normal form. 2/1178 useless extension candidates. Maximal degree in co-relation 3764. Up to 947 conditions per place. [2024-06-28 00:52:28,765 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 54 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-06-28 00:52:28,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 633 flow [2024-06-28 00:52:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 00:52:28,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 00:52:28,767 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 431 flow. Second operand 6 states and 105 transitions. [2024-06-28 00:52:28,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 633 flow [2024-06-28 00:52:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 83 transitions, 604 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:28,784 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 455 flow [2024-06-28 00:52:28,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=455, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2024-06-28 00:52:28,785 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 28 predicate places. [2024-06-28 00:52:28,785 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 455 flow [2024-06-28 00:52:28,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:28,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:28,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:52:28,785 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 00:52:28,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash -659704372, now seen corresponding path program 1 times [2024-06-28 00:52:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118472322] [2024-06-28 00:52:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:29,340 INFO 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 00:52:29,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:29,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118472322] [2024-06-28 00:52:29,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118472322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:29,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:29,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:29,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81170399] [2024-06-28 00:52:29,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:29,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:29,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:29,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:29,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:29,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 455 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 00:52:29,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:29,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:29,651 INFO L124 PetriNetUnfolderBase]: 656/1229 cut-off events. [2024-06-28 00:52:29,651 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2024-06-28 00:52:29,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3880 conditions, 1229 events. 656/1229 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6418 event pairs, 251 based on Foata normal form. 1/1179 useless extension candidates. Maximal degree in co-relation 3848. Up to 1042 conditions per place. [2024-06-28 00:52:29,659 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 13 changer transitions 0/89 dead transitions. [2024-06-28 00:52:29,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 693 flow [2024-06-28 00:52:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:29,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 00:52:29,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362934362934363 [2024-06-28 00:52:29,661 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 455 flow. Second operand 7 states and 113 transitions. [2024-06-28 00:52:29,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 693 flow [2024-06-28 00:52:29,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 89 transitions, 635 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:29,667 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 453 flow [2024-06-28 00:52:29,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=453, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-28 00:52:29,668 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-28 00:52:29,669 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 453 flow [2024-06-28 00:52:29,669 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 00:52:29,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:29,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:29,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 00:52:29,669 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 00:52:29,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 648936799, now seen corresponding path program 1 times [2024-06-28 00:52:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470578735] [2024-06-28 00:52:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:29,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:30,080 INFO 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 00:52:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470578735] [2024-06-28 00:52:30,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470578735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:30,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:30,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:30,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918377229] [2024-06-28 00:52:30,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:30,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:30,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:30,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:30,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:30,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:30,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 453 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 00:52:30,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:30,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:30,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:30,504 INFO L124 PetriNetUnfolderBase]: 698/1297 cut-off events. [2024-06-28 00:52:30,504 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2024-06-28 00:52:30,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4185 conditions, 1297 events. 698/1297 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6760 event pairs, 197 based on Foata normal form. 3/1248 useless extension candidates. Maximal degree in co-relation 4152. Up to 980 conditions per place. [2024-06-28 00:52:30,513 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 68 selfloop transitions, 37 changer transitions 0/111 dead transitions. [2024-06-28 00:52:30,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 111 transitions, 843 flow [2024-06-28 00:52:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:30,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:30,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 00:52:30,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-28 00:52:30,515 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 453 flow. Second operand 7 states and 125 transitions. [2024-06-28 00:52:30,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 111 transitions, 843 flow [2024-06-28 00:52:30,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 111 transitions, 809 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:30,524 INFO L231 Difference]: Finished difference. Result has 75 places, 87 transitions, 652 flow [2024-06-28 00:52:30,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=652, PETRI_PLACES=75, PETRI_TRANSITIONS=87} [2024-06-28 00:52:30,525 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 00:52:30,525 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 87 transitions, 652 flow [2024-06-28 00:52:30,526 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 00:52:30,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:30,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:30,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 00:52:30,526 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 00:52:30,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:30,526 INFO L85 PathProgramCache]: Analyzing trace with hash 997671919, now seen corresponding path program 2 times [2024-06-28 00:52:30,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:30,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086167698] [2024-06-28 00:52:30,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:30,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:31,041 INFO 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 00:52:31,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:31,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086167698] [2024-06-28 00:52:31,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086167698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:31,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:31,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:31,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124079114] [2024-06-28 00:52:31,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:31,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:31,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:31,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:31,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 87 transitions, 652 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 00:52:31,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:31,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:31,425 INFO L124 PetriNetUnfolderBase]: 722/1331 cut-off events. [2024-06-28 00:52:31,425 INFO L125 PetriNetUnfolderBase]: For 4850/4856 co-relation queries the response was YES. [2024-06-28 00:52:31,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 1331 events. 722/1331 cut-off events. For 4850/4856 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6953 event pairs, 163 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 4925. Up to 973 conditions per place. [2024-06-28 00:52:31,435 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 70 selfloop transitions, 45 changer transitions 0/121 dead transitions. [2024-06-28 00:52:31,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 121 transitions, 1079 flow [2024-06-28 00:52:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:52:31,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-28 00:52:31,437 INFO L175 Difference]: Start difference. First operand has 75 places, 87 transitions, 652 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:52:31,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 121 transitions, 1079 flow [2024-06-28 00:52:31,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 121 transitions, 1027 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:31,445 INFO L231 Difference]: Finished difference. Result has 81 places, 97 transitions, 808 flow [2024-06-28 00:52:31,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=808, PETRI_PLACES=81, PETRI_TRANSITIONS=97} [2024-06-28 00:52:31,446 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 40 predicate places. [2024-06-28 00:52:31,446 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 97 transitions, 808 flow [2024-06-28 00:52:31,446 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 00:52:31,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:31,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 00:52:31,446 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 00:52:31,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:31,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1023725885, now seen corresponding path program 3 times [2024-06-28 00:52:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327112966] [2024-06-28 00:52:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:31,922 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 00:52:31,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:31,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327112966] [2024-06-28 00:52:31,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327112966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:31,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:31,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006191067] [2024-06-28 00:52:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:31,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:31,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:31,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:31,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:31,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:31,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 97 transitions, 808 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 00:52:31,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:31,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:31,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:32,342 INFO L124 PetriNetUnfolderBase]: 722/1325 cut-off events. [2024-06-28 00:52:32,342 INFO L125 PetriNetUnfolderBase]: For 6234/6240 co-relation queries the response was YES. [2024-06-28 00:52:32,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5328 conditions, 1325 events. 722/1325 cut-off events. For 6234/6240 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6844 event pairs, 203 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 5289. Up to 1034 conditions per place. [2024-06-28 00:52:32,357 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 78 selfloop transitions, 38 changer transitions 0/122 dead transitions. [2024-06-28 00:52:32,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 1162 flow [2024-06-28 00:52:32,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:32,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:32,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 00:52:32,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-28 00:52:32,359 INFO L175 Difference]: Start difference. First operand has 81 places, 97 transitions, 808 flow. Second operand 7 states and 120 transitions. [2024-06-28 00:52:32,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 1162 flow [2024-06-28 00:52:32,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 1065 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:32,370 INFO L231 Difference]: Finished difference. Result has 85 places, 102 transitions, 855 flow [2024-06-28 00:52:32,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=85, PETRI_TRANSITIONS=102} [2024-06-28 00:52:32,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 44 predicate places. [2024-06-28 00:52:32,371 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 855 flow [2024-06-28 00:52:32,371 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 00:52:32,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:32,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:32,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 00:52:32,372 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 00:52:32,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:32,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1554404813, now seen corresponding path program 1 times [2024-06-28 00:52:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:32,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838793917] [2024-06-28 00:52:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:33,429 INFO 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 00:52:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:33,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838793917] [2024-06-28 00:52:33,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838793917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:33,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:33,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821276432] [2024-06-28 00:52:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:33,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:33,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:33,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 855 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 00:52:33,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:33,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:33,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:33,923 INFO L124 PetriNetUnfolderBase]: 728/1326 cut-off events. [2024-06-28 00:52:33,924 INFO L125 PetriNetUnfolderBase]: For 6174/6174 co-relation queries the response was YES. [2024-06-28 00:52:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 1326 events. 728/1326 cut-off events. For 6174/6174 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6842 event pairs, 176 based on Foata normal form. 1/1280 useless extension candidates. Maximal degree in co-relation 5335. Up to 1134 conditions per place. [2024-06-28 00:52:33,930 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 108 selfloop transitions, 18 changer transitions 0/132 dead transitions. [2024-06-28 00:52:33,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 132 transitions, 1240 flow [2024-06-28 00:52:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:33,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:52:33,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-28 00:52:33,932 INFO L175 Difference]: Start difference. First operand has 85 places, 102 transitions, 855 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:52:33,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 132 transitions, 1240 flow [2024-06-28 00:52:33,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 132 transitions, 1182 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:33,945 INFO L231 Difference]: Finished difference. Result has 91 places, 106 transitions, 885 flow [2024-06-28 00:52:33,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=885, PETRI_PLACES=91, PETRI_TRANSITIONS=106} [2024-06-28 00:52:33,946 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 50 predicate places. [2024-06-28 00:52:33,946 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 106 transitions, 885 flow [2024-06-28 00:52:33,946 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 00:52:33,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:33,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:33,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 00:52:33,947 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 00:52:33,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:33,947 INFO L85 PathProgramCache]: Analyzing trace with hash -291511095, now seen corresponding path program 1 times [2024-06-28 00:52:33,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:33,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428449962] [2024-06-28 00:52:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:34,437 INFO 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 00:52:34,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:34,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428449962] [2024-06-28 00:52:34,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428449962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:34,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:34,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:34,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518834089] [2024-06-28 00:52:34,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:34,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:34,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:34,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:34,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:34,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:34,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 106 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:34,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:34,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:34,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:34,825 INFO L124 PetriNetUnfolderBase]: 772/1397 cut-off events. [2024-06-28 00:52:34,825 INFO L125 PetriNetUnfolderBase]: For 7600/7600 co-relation queries the response was YES. [2024-06-28 00:52:34,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 1397 events. 772/1397 cut-off events. For 7600/7600 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7243 event pairs, 194 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 5792. Up to 1039 conditions per place. [2024-06-28 00:52:34,834 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 88 selfloop transitions, 44 changer transitions 0/138 dead transitions. [2024-06-28 00:52:34,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 138 transitions, 1327 flow [2024-06-28 00:52:34,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:34,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-28 00:52:34,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 00:52:34,836 INFO L175 Difference]: Start difference. First operand has 91 places, 106 transitions, 885 flow. Second operand 7 states and 126 transitions. [2024-06-28 00:52:34,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 138 transitions, 1327 flow [2024-06-28 00:52:34,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 138 transitions, 1292 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:34,847 INFO L231 Difference]: Finished difference. Result has 94 places, 112 transitions, 1007 flow [2024-06-28 00:52:34,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1007, PETRI_PLACES=94, PETRI_TRANSITIONS=112} [2024-06-28 00:52:34,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-28 00:52:34,847 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 112 transitions, 1007 flow [2024-06-28 00:52:34,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:34,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:34,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:34,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 00:52:34,848 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 00:52:34,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:34,848 INFO L85 PathProgramCache]: Analyzing trace with hash 474623275, now seen corresponding path program 1 times [2024-06-28 00:52:34,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:34,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902392386] [2024-06-28 00:52:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:34,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:35,508 INFO 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 00:52:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902392386] [2024-06-28 00:52:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902392386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316434000] [2024-06-28 00:52:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:35,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:35,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:35,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 112 transitions, 1007 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 00:52:35,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:35,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:35,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:36,015 INFO L124 PetriNetUnfolderBase]: 838/1520 cut-off events. [2024-06-28 00:52:36,015 INFO L125 PetriNetUnfolderBase]: For 9013/9013 co-relation queries the response was YES. [2024-06-28 00:52:36,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6625 conditions, 1520 events. 838/1520 cut-off events. For 9013/9013 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8067 event pairs, 186 based on Foata normal form. 3/1469 useless extension candidates. Maximal degree in co-relation 6580. Up to 1075 conditions per place. [2024-06-28 00:52:36,023 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 108 selfloop transitions, 49 changer transitions 0/163 dead transitions. [2024-06-28 00:52:36,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 163 transitions, 1587 flow [2024-06-28 00:52:36,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:36,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:36,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 00:52:36,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-28 00:52:36,025 INFO L175 Difference]: Start difference. First operand has 94 places, 112 transitions, 1007 flow. Second operand 8 states and 147 transitions. [2024-06-28 00:52:36,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 163 transitions, 1587 flow [2024-06-28 00:52:36,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 163 transitions, 1520 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:36,041 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1238 flow [2024-06-28 00:52:36,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1238, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2024-06-28 00:52:36,042 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-28 00:52:36,042 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1238 flow [2024-06-28 00:52:36,043 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 00:52:36,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:36,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:36,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 00:52:36,043 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 00:52:36,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:36,044 INFO L85 PathProgramCache]: Analyzing trace with hash 474616517, now seen corresponding path program 2 times [2024-06-28 00:52:36,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657380102] [2024-06-28 00:52:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:36,462 INFO 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 00:52:36,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:36,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657380102] [2024-06-28 00:52:36,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657380102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:36,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:36,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:36,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723368577] [2024-06-28 00:52:36,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:36,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:36,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:36,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:36,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:36,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:36,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1238 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:36,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:36,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:36,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:36,953 INFO L124 PetriNetUnfolderBase]: 834/1505 cut-off events. [2024-06-28 00:52:36,954 INFO L125 PetriNetUnfolderBase]: For 11333/11333 co-relation queries the response was YES. [2024-06-28 00:52:36,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7385 conditions, 1505 events. 834/1505 cut-off events. For 11333/11333 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7943 event pairs, 210 based on Foata normal form. 2/1456 useless extension candidates. Maximal degree in co-relation 7335. Up to 1200 conditions per place. [2024-06-28 00:52:36,964 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 109 selfloop transitions, 39 changer transitions 0/154 dead transitions. [2024-06-28 00:52:36,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 154 transitions, 1638 flow [2024-06-28 00:52:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:36,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:36,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-28 00:52:36,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-28 00:52:36,965 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1238 flow. Second operand 7 states and 127 transitions. [2024-06-28 00:52:36,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 154 transitions, 1638 flow [2024-06-28 00:52:36,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 154 transitions, 1572 flow, removed 32 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:36,988 INFO L231 Difference]: Finished difference. Result has 109 places, 129 transitions, 1291 flow [2024-06-28 00:52:36,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1291, PETRI_PLACES=109, PETRI_TRANSITIONS=129} [2024-06-28 00:52:36,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 00:52:36,989 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 129 transitions, 1291 flow [2024-06-28 00:52:36,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:36,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:36,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:36,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 00:52:36,989 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 00:52:36,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1624945357, now seen corresponding path program 2 times [2024-06-28 00:52:36,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:36,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735896215] [2024-06-28 00:52:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:36,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:37,599 INFO 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 00:52:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:37,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735896215] [2024-06-28 00:52:37,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735896215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:37,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:37,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:37,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049967434] [2024-06-28 00:52:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:37,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:37,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:37,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:37,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:37,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 129 transitions, 1291 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 00:52:37,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:37,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:37,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:38,073 INFO L124 PetriNetUnfolderBase]: 856/1562 cut-off events. [2024-06-28 00:52:38,073 INFO L125 PetriNetUnfolderBase]: For 12101/12107 co-relation queries the response was YES. [2024-06-28 00:52:38,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1562 events. 856/1562 cut-off events. For 12101/12107 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8351 event pairs, 211 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 7634. Up to 1157 conditions per place. [2024-06-28 00:52:38,086 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 116 selfloop transitions, 48 changer transitions 0/170 dead transitions. [2024-06-28 00:52:38,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 170 transitions, 1872 flow [2024-06-28 00:52:38,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:38,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 00:52:38,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 00:52:38,088 INFO L175 Difference]: Start difference. First operand has 109 places, 129 transitions, 1291 flow. Second operand 8 states and 140 transitions. [2024-06-28 00:52:38,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 170 transitions, 1872 flow [2024-06-28 00:52:38,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 170 transitions, 1796 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:38,108 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 1504 flow [2024-06-28 00:52:38,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1504, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2024-06-28 00:52:38,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-06-28 00:52:38,109 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 1504 flow [2024-06-28 00:52:38,109 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 00:52:38,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:38,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:38,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 00:52:38,110 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 00:52:38,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1679007309, now seen corresponding path program 3 times [2024-06-28 00:52:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:38,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943030243] [2024-06-28 00:52:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:38,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:38,669 INFO 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 00:52:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943030243] [2024-06-28 00:52:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943030243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:38,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:38,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:38,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440189] [2024-06-28 00:52:38,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:38,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:38,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:38,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 1504 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 00:52:38,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:38,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:38,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:39,159 INFO L124 PetriNetUnfolderBase]: 878/1612 cut-off events. [2024-06-28 00:52:39,159 INFO L125 PetriNetUnfolderBase]: For 13873/13879 co-relation queries the response was YES. [2024-06-28 00:52:39,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8238 conditions, 1612 events. 878/1612 cut-off events. For 13873/13879 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8826 event pairs, 165 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 8181. Up to 1094 conditions per place. [2024-06-28 00:52:39,170 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 111 selfloop transitions, 65 changer transitions 0/182 dead transitions. [2024-06-28 00:52:39,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 182 transitions, 2152 flow [2024-06-28 00:52:39,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:39,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 00:52:39,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 00:52:39,172 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 1504 flow. Second operand 8 states and 144 transitions. [2024-06-28 00:52:39,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 182 transitions, 2152 flow [2024-06-28 00:52:39,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 182 transitions, 2066 flow, removed 42 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:39,199 INFO L231 Difference]: Finished difference. Result has 123 places, 150 transitions, 1731 flow [2024-06-28 00:52:39,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1731, PETRI_PLACES=123, PETRI_TRANSITIONS=150} [2024-06-28 00:52:39,200 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-28 00:52:39,200 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 150 transitions, 1731 flow [2024-06-28 00:52:39,200 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 00:52:39,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:39,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:39,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 00:52:39,201 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 00:52:39,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:39,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1679007061, now seen corresponding path program 3 times [2024-06-28 00:52:39,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:39,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251897906] [2024-06-28 00:52:39,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:39,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:39,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:39,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:39,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251897906] [2024-06-28 00:52:39,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251897906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:39,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:39,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 00:52:39,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794443524] [2024-06-28 00:52:39,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:39,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 00:52:39,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:39,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 00:52:39,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 00:52:39,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:39,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 150 transitions, 1731 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:39,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:39,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:39,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:40,026 INFO L124 PetriNetUnfolderBase]: 888/1624 cut-off events. [2024-06-28 00:52:40,026 INFO L125 PetriNetUnfolderBase]: For 17216/17222 co-relation queries the response was YES. [2024-06-28 00:52:40,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 1624 events. 888/1624 cut-off events. For 17216/17222 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8951 event pairs, 191 based on Foata normal form. 3/1565 useless extension candidates. Maximal degree in co-relation 8767. Up to 1162 conditions per place. [2024-06-28 00:52:40,038 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 125 selfloop transitions, 48 changer transitions 0/179 dead transitions. [2024-06-28 00:52:40,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 179 transitions, 2317 flow [2024-06-28 00:52:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:40,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 00:52:40,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-28 00:52:40,040 INFO L175 Difference]: Start difference. First operand has 123 places, 150 transitions, 1731 flow. Second operand 7 states and 122 transitions. [2024-06-28 00:52:40,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 179 transitions, 2317 flow [2024-06-28 00:52:40,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 179 transitions, 2178 flow, removed 43 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:40,073 INFO L231 Difference]: Finished difference. Result has 127 places, 156 transitions, 1800 flow [2024-06-28 00:52:40,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1800, PETRI_PLACES=127, PETRI_TRANSITIONS=156} [2024-06-28 00:52:40,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 86 predicate places. [2024-06-28 00:52:40,074 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 156 transitions, 1800 flow [2024-06-28 00:52:40,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:52:40,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:40,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:40,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 00:52:40,075 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 00:52:40,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:40,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1633516237, now seen corresponding path program 4 times [2024-06-28 00:52:40,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:40,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326927079] [2024-06-28 00:52:40,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:40,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:40,632 INFO 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 00:52:40,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:40,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326927079] [2024-06-28 00:52:40,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326927079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:40,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:40,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:40,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915712691] [2024-06-28 00:52:40,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:40,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:40,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:40,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:40,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:40,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:40,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 156 transitions, 1800 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 00:52:40,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:40,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:40,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:41,088 INFO L124 PetriNetUnfolderBase]: 891/1623 cut-off events. [2024-06-28 00:52:41,089 INFO L125 PetriNetUnfolderBase]: For 15603/15603 co-relation queries the response was YES. [2024-06-28 00:52:41,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8848 conditions, 1623 events. 891/1623 cut-off events. For 15603/15603 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8905 event pairs, 198 based on Foata normal form. 1/1563 useless extension candidates. Maximal degree in co-relation 8785. Up to 1394 conditions per place. [2024-06-28 00:52:41,116 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 160 selfloop transitions, 18 changer transitions 0/184 dead transitions. [2024-06-28 00:52:41,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 184 transitions, 2295 flow [2024-06-28 00:52:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:41,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:52:41,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-28 00:52:41,133 INFO L175 Difference]: Start difference. First operand has 127 places, 156 transitions, 1800 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:52:41,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 184 transitions, 2295 flow [2024-06-28 00:52:41,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 184 transitions, 2225 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:41,194 INFO L231 Difference]: Finished difference. Result has 132 places, 159 transitions, 1828 flow [2024-06-28 00:52:41,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1730, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1828, PETRI_PLACES=132, PETRI_TRANSITIONS=159} [2024-06-28 00:52:41,195 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 91 predicate places. [2024-06-28 00:52:41,195 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 159 transitions, 1828 flow [2024-06-28 00:52:41,195 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 00:52:41,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:41,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:41,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 00:52:41,196 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 00:52:41,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:41,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1679314891, now seen corresponding path program 1 times [2024-06-28 00:52:41,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:41,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320298152] [2024-06-28 00:52:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:41,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:42,987 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 00:52:42,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:42,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320298152] [2024-06-28 00:52:42,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320298152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:42,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:42,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309663938] [2024-06-28 00:52:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:42,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:43,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:43,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 159 transitions, 1828 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 00:52:43,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:43,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:43,753 INFO L124 PetriNetUnfolderBase]: 897/1639 cut-off events. [2024-06-28 00:52:43,753 INFO L125 PetriNetUnfolderBase]: For 16494/16494 co-relation queries the response was YES. [2024-06-28 00:52:43,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9005 conditions, 1639 events. 897/1639 cut-off events. For 16494/16494 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9031 event pairs, 195 based on Foata normal form. 1/1577 useless extension candidates. Maximal degree in co-relation 8940. Up to 1383 conditions per place. [2024-06-28 00:52:43,763 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 167 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2024-06-28 00:52:43,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 195 transitions, 2391 flow [2024-06-28 00:52:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:43,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:43,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:52:43,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 00:52:43,765 INFO L175 Difference]: Start difference. First operand has 132 places, 159 transitions, 1828 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:52:43,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 195 transitions, 2391 flow [2024-06-28 00:52:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 195 transitions, 2315 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:43,794 INFO L231 Difference]: Finished difference. Result has 136 places, 164 transitions, 1870 flow [2024-06-28 00:52:43,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1870, PETRI_PLACES=136, PETRI_TRANSITIONS=164} [2024-06-28 00:52:43,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 00:52:43,794 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 164 transitions, 1870 flow [2024-06-28 00:52:43,795 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 00:52:43,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:43,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 00:52:43,795 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 00:52:43,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 739697891, now seen corresponding path program 1 times [2024-06-28 00:52:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073640731] [2024-06-28 00:52:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:44,601 INFO 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 00:52:44,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:44,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073640731] [2024-06-28 00:52:44,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073640731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:44,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:44,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:44,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751157935] [2024-06-28 00:52:44,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:44,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:44,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:44,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:44,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:44,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:44,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 164 transitions, 1870 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:44,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:44,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:44,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:45,113 INFO L124 PetriNetUnfolderBase]: 1044/1880 cut-off events. [2024-06-28 00:52:45,113 INFO L125 PetriNetUnfolderBase]: For 20631/20631 co-relation queries the response was YES. [2024-06-28 00:52:45,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1880 events. 1044/1880 cut-off events. For 20631/20631 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10473 event pairs, 229 based on Foata normal form. 2/1817 useless extension candidates. Maximal degree in co-relation 10496. Up to 1391 conditions per place. [2024-06-28 00:52:45,126 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 173 selfloop transitions, 44 changer transitions 0/223 dead transitions. [2024-06-28 00:52:45,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 223 transitions, 2913 flow [2024-06-28 00:52:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:45,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 00:52:45,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 00:52:45,128 INFO L175 Difference]: Start difference. First operand has 136 places, 164 transitions, 1870 flow. Second operand 8 states and 136 transitions. [2024-06-28 00:52:45,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 223 transitions, 2913 flow [2024-06-28 00:52:45,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 223 transitions, 2843 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:45,169 INFO L231 Difference]: Finished difference. Result has 141 places, 183 transitions, 2205 flow [2024-06-28 00:52:45,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1802, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2205, PETRI_PLACES=141, PETRI_TRANSITIONS=183} [2024-06-28 00:52:45,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 100 predicate places. [2024-06-28 00:52:45,170 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 183 transitions, 2205 flow [2024-06-28 00:52:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:45,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:45,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:45,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 00:52:45,171 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 00:52:45,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:45,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2015799713, now seen corresponding path program 2 times [2024-06-28 00:52:45,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:45,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054707982] [2024-06-28 00:52:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:45,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:52:45,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054707982] [2024-06-28 00:52:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054707982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 00:52:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657066419] [2024-06-28 00:52:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 00:52:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 00:52:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 00:52:45,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 00:52:45,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 183 transitions, 2205 flow. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 00:52:45,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:45,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 00:52:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:46,013 INFO L124 PetriNetUnfolderBase]: 1024/1871 cut-off events. [2024-06-28 00:52:46,014 INFO L125 PetriNetUnfolderBase]: For 22651/22687 co-relation queries the response was YES. [2024-06-28 00:52:46,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10655 conditions, 1871 events. 1024/1871 cut-off events. For 22651/22687 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10685 event pairs, 187 based on Foata normal form. 30/1821 useless extension candidates. Maximal degree in co-relation 10584. Up to 1252 conditions per place. [2024-06-28 00:52:46,026 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 136 selfloop transitions, 46 changer transitions 0/205 dead transitions. [2024-06-28 00:52:46,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 205 transitions, 2763 flow [2024-06-28 00:52:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 00:52:46,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 00:52:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 00:52:46,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 00:52:46,027 INFO L175 Difference]: Start difference. First operand has 141 places, 183 transitions, 2205 flow. Second operand 6 states and 108 transitions. [2024-06-28 00:52:46,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 205 transitions, 2763 flow [2024-06-28 00:52:46,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 205 transitions, 2713 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-28 00:52:46,069 INFO L231 Difference]: Finished difference. Result has 146 places, 187 transitions, 2339 flow [2024-06-28 00:52:46,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2339, PETRI_PLACES=146, PETRI_TRANSITIONS=187} [2024-06-28 00:52:46,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 105 predicate places. [2024-06-28 00:52:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 187 transitions, 2339 flow [2024-06-28 00:52:46,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 00:52:46,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:46,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 00:52:46,071 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 00:52:46,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash -130089531, now seen corresponding path program 3 times [2024-06-28 00:52:46,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056497608] [2024-06-28 00:52:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:46,710 INFO 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 00:52:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:46,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056497608] [2024-06-28 00:52:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056497608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:46,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917210070] [2024-06-28 00:52:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:46,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:46,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:46,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 187 transitions, 2339 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:46,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:46,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:46,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:47,373 INFO L124 PetriNetUnfolderBase]: 1137/2034 cut-off events. [2024-06-28 00:52:47,373 INFO L125 PetriNetUnfolderBase]: For 25768/25768 co-relation queries the response was YES. [2024-06-28 00:52:47,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12267 conditions, 2034 events. 1137/2034 cut-off events. For 25768/25768 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11451 event pairs, 218 based on Foata normal form. 2/1973 useless extension candidates. Maximal degree in co-relation 12193. Up to 1533 conditions per place. [2024-06-28 00:52:47,387 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 183 selfloop transitions, 65 changer transitions 0/254 dead transitions. [2024-06-28 00:52:47,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 254 transitions, 3594 flow [2024-06-28 00:52:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:47,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:47,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-28 00:52:47,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-28 00:52:47,389 INFO L175 Difference]: Start difference. First operand has 146 places, 187 transitions, 2339 flow. Second operand 8 states and 141 transitions. [2024-06-28 00:52:47,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 254 transitions, 3594 flow [2024-06-28 00:52:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 254 transitions, 3490 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:47,443 INFO L231 Difference]: Finished difference. Result has 154 places, 213 transitions, 2934 flow [2024-06-28 00:52:47,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2934, PETRI_PLACES=154, PETRI_TRANSITIONS=213} [2024-06-28 00:52:47,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-28 00:52:47,444 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 213 transitions, 2934 flow [2024-06-28 00:52:47,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:47,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:47,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 00:52:47,445 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 00:52:47,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash 739758496, now seen corresponding path program 1 times [2024-06-28 00:52:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366307295] [2024-06-28 00:52:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:47,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:48,093 INFO 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 00:52:48,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:48,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366307295] [2024-06-28 00:52:48,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366307295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:48,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:48,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:48,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428028610] [2024-06-28 00:52:48,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:48,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:48,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:48,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:48,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:48,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:48,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 213 transitions, 2934 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:48,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:48,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:48,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:48,724 INFO L124 PetriNetUnfolderBase]: 1137/2025 cut-off events. [2024-06-28 00:52:48,725 INFO L125 PetriNetUnfolderBase]: For 25152/25152 co-relation queries the response was YES. [2024-06-28 00:52:48,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12704 conditions, 2025 events. 1137/2025 cut-off events. For 25152/25152 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11339 event pairs, 219 based on Foata normal form. 1/1966 useless extension candidates. Maximal degree in co-relation 12626. Up to 1489 conditions per place. [2024-06-28 00:52:48,752 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 160 selfloop transitions, 73 changer transitions 0/239 dead transitions. [2024-06-28 00:52:48,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 239 transitions, 3555 flow [2024-06-28 00:52:48,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 00:52:48,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 00:52:48,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 00:52:48,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-28 00:52:48,765 INFO L175 Difference]: Start difference. First operand has 154 places, 213 transitions, 2934 flow. Second operand 7 states and 124 transitions. [2024-06-28 00:52:48,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 239 transitions, 3555 flow [2024-06-28 00:52:48,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 239 transitions, 3422 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:48,839 INFO L231 Difference]: Finished difference. Result has 158 places, 216 transitions, 3016 flow [2024-06-28 00:52:48,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3016, PETRI_PLACES=158, PETRI_TRANSITIONS=216} [2024-06-28 00:52:48,840 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-28 00:52:48,840 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 216 transitions, 3016 flow [2024-06-28 00:52:48,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:48,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:48,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:48,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 00:52:48,840 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 00:52:48,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:48,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1712799433, now seen corresponding path program 4 times [2024-06-28 00:52:48,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:48,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078130663] [2024-06-28 00:52:48,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:48,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:49,646 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 00:52:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078130663] [2024-06-28 00:52:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078130663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:49,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:49,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811019164] [2024-06-28 00:52:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:49,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:49,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:49,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:49,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:49,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:49,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 216 transitions, 3016 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:49,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:49,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:49,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:50,302 INFO L124 PetriNetUnfolderBase]: 1134/2018 cut-off events. [2024-06-28 00:52:50,303 INFO L125 PetriNetUnfolderBase]: For 28043/28043 co-relation queries the response was YES. [2024-06-28 00:52:50,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12687 conditions, 2018 events. 1134/2018 cut-off events. For 28043/28043 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11288 event pairs, 234 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 12607. Up to 1525 conditions per place. [2024-06-28 00:52:50,316 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 177 selfloop transitions, 70 changer transitions 0/253 dead transitions. [2024-06-28 00:52:50,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 253 transitions, 3851 flow [2024-06-28 00:52:50,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 00:52:50,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-28 00:52:50,318 INFO L175 Difference]: Start difference. First operand has 158 places, 216 transitions, 3016 flow. Second operand 8 states and 135 transitions. [2024-06-28 00:52:50,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 253 transitions, 3851 flow [2024-06-28 00:52:50,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 253 transitions, 3720 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 00:52:50,373 INFO L231 Difference]: Finished difference. Result has 164 places, 222 transitions, 3250 flow [2024-06-28 00:52:50,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2891, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3250, PETRI_PLACES=164, PETRI_TRANSITIONS=222} [2024-06-28 00:52:50,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-28 00:52:50,374 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 222 transitions, 3250 flow [2024-06-28 00:52:50,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:50,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:50,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:50,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 00:52:50,375 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 00:52:50,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:50,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1828206078, now seen corresponding path program 2 times [2024-06-28 00:52:50,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:50,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124273187] [2024-06-28 00:52:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:51,122 INFO 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 00:52:51,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124273187] [2024-06-28 00:52:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124273187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:51,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:51,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:51,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741862308] [2024-06-28 00:52:51,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:51,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:51,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:51,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:51,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 222 transitions, 3250 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:51,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:51,699 INFO L124 PetriNetUnfolderBase]: 1166/2062 cut-off events. [2024-06-28 00:52:51,699 INFO L125 PetriNetUnfolderBase]: For 29389/29389 co-relation queries the response was YES. [2024-06-28 00:52:51,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13181 conditions, 2062 events. 1166/2062 cut-off events. For 29389/29389 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11485 event pairs, 234 based on Foata normal form. 1/2001 useless extension candidates. Maximal degree in co-relation 13098. Up to 1569 conditions per place. [2024-06-28 00:52:51,716 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 182 selfloop transitions, 72 changer transitions 0/260 dead transitions. [2024-06-28 00:52:51,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 260 transitions, 4034 flow [2024-06-28 00:52:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:51,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:51,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 00:52:51,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 00:52:51,718 INFO L175 Difference]: Start difference. First operand has 164 places, 222 transitions, 3250 flow. Second operand 8 states and 137 transitions. [2024-06-28 00:52:51,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 260 transitions, 4034 flow [2024-06-28 00:52:51,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 260 transitions, 3870 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 00:52:51,780 INFO L231 Difference]: Finished difference. Result has 167 places, 230 transitions, 3381 flow [2024-06-28 00:52:51,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3086, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3381, PETRI_PLACES=167, PETRI_TRANSITIONS=230} [2024-06-28 00:52:51,781 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 126 predicate places. [2024-06-28 00:52:51,781 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 230 transitions, 3381 flow [2024-06-28 00:52:51,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:51,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:51,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:51,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 00:52:51,782 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 00:52:51,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:51,782 INFO L85 PathProgramCache]: Analyzing trace with hash -447109427, now seen corresponding path program 1 times [2024-06-28 00:52:51,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:51,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795278516] [2024-06-28 00:52:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:51,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:52,348 INFO 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 00:52:52,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:52,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795278516] [2024-06-28 00:52:52,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795278516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:52,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:52,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:52,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839309665] [2024-06-28 00:52:52,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:52,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:52,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:52,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:52,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:52,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:52,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 230 transitions, 3381 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:52,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:52,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:52,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:52,948 INFO L124 PetriNetUnfolderBase]: 1198/2118 cut-off events. [2024-06-28 00:52:52,949 INFO L125 PetriNetUnfolderBase]: For 31705/31709 co-relation queries the response was YES. [2024-06-28 00:52:52,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13704 conditions, 2118 events. 1198/2118 cut-off events. For 31705/31709 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11845 event pairs, 227 based on Foata normal form. 6/2061 useless extension candidates. Maximal degree in co-relation 13619. Up to 1475 conditions per place. [2024-06-28 00:52:52,969 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 188 selfloop transitions, 79 changer transitions 0/273 dead transitions. [2024-06-28 00:52:52,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 273 transitions, 4188 flow [2024-06-28 00:52:52,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:52,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:52,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:52:52,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:52:52,971 INFO L175 Difference]: Start difference. First operand has 167 places, 230 transitions, 3381 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:52:52,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 273 transitions, 4188 flow [2024-06-28 00:52:53,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 273 transitions, 4061 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:53,037 INFO L231 Difference]: Finished difference. Result has 173 places, 237 transitions, 3612 flow [2024-06-28 00:52:53,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3612, PETRI_PLACES=173, PETRI_TRANSITIONS=237} [2024-06-28 00:52:53,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-28 00:52:53,039 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 237 transitions, 3612 flow [2024-06-28 00:52:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:53,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:53,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:53,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 00:52:53,039 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 00:52:53,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:53,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1828421125, now seen corresponding path program 2 times [2024-06-28 00:52:53,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:53,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986184959] [2024-06-28 00:52:53,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:53,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:53,619 INFO 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 00:52:53,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:53,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986184959] [2024-06-28 00:52:53,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986184959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:53,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:53,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628290110] [2024-06-28 00:52:53,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:53,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:53,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:53,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:53,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 237 transitions, 3612 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:53,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:53,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:54,340 INFO L124 PetriNetUnfolderBase]: 1260/2223 cut-off events. [2024-06-28 00:52:54,340 INFO L125 PetriNetUnfolderBase]: For 36809/36809 co-relation queries the response was YES. [2024-06-28 00:52:54,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14980 conditions, 2223 events. 1260/2223 cut-off events. For 36809/36809 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12554 event pairs, 224 based on Foata normal form. 2/2160 useless extension candidates. Maximal degree in co-relation 14891. Up to 1348 conditions per place. [2024-06-28 00:52:54,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 185 selfloop transitions, 89 changer transitions 0/280 dead transitions. [2024-06-28 00:52:54,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 280 transitions, 4530 flow [2024-06-28 00:52:54,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:52:54,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:52:54,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 148 transitions. [2024-06-28 00:52:54,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 00:52:54,372 INFO L175 Difference]: Start difference. First operand has 173 places, 237 transitions, 3612 flow. Second operand 8 states and 148 transitions. [2024-06-28 00:52:54,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 280 transitions, 4530 flow [2024-06-28 00:52:54,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 280 transitions, 4416 flow, removed 34 selfloop flow, removed 2 redundant places. [2024-06-28 00:52:54,456 INFO L231 Difference]: Finished difference. Result has 180 places, 245 transitions, 3875 flow [2024-06-28 00:52:54,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3875, PETRI_PLACES=180, PETRI_TRANSITIONS=245} [2024-06-28 00:52:54,457 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 00:52:54,457 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 245 transitions, 3875 flow [2024-06-28 00:52:54,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:54,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:54,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:54,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 00:52:54,459 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 00:52:54,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash 858061502, now seen corresponding path program 1 times [2024-06-28 00:52:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:54,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008694376] [2024-06-28 00:52:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:55,629 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 00:52:55,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:55,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008694376] [2024-06-28 00:52:55,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008694376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:55,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:55,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:55,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928690054] [2024-06-28 00:52:55,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:55,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:55,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:55,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:55,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:55,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:55,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 245 transitions, 3875 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 00:52:55,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:55,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:55,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:56,357 INFO L124 PetriNetUnfolderBase]: 1308/2322 cut-off events. [2024-06-28 00:52:56,360 INFO L125 PetriNetUnfolderBase]: For 40410/40410 co-relation queries the response was YES. [2024-06-28 00:52:56,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15964 conditions, 2322 events. 1308/2322 cut-off events. For 40410/40410 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 13258 event pairs, 236 based on Foata normal form. 3/2252 useless extension candidates. Maximal degree in co-relation 15872. Up to 1576 conditions per place. [2024-06-28 00:52:56,381 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 201 selfloop transitions, 84 changer transitions 0/291 dead transitions. [2024-06-28 00:52:56,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 291 transitions, 4745 flow [2024-06-28 00:52:56,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:56,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:56,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 00:52:56,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954954954954955 [2024-06-28 00:52:56,385 INFO L175 Difference]: Start difference. First operand has 180 places, 245 transitions, 3875 flow. Second operand 9 states and 165 transitions. [2024-06-28 00:52:56,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 291 transitions, 4745 flow [2024-06-28 00:52:56,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 291 transitions, 4578 flow, removed 45 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:56,478 INFO L231 Difference]: Finished difference. Result has 187 places, 251 transitions, 3993 flow [2024-06-28 00:52:56,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3712, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3993, PETRI_PLACES=187, PETRI_TRANSITIONS=251} [2024-06-28 00:52:56,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 00:52:56,478 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 251 transitions, 3993 flow [2024-06-28 00:52:56,479 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 00:52:56,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:56,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:56,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 00:52:56,479 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 00:52:56,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:56,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1828413685, now seen corresponding path program 3 times [2024-06-28 00:52:56,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:56,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076565670] [2024-06-28 00:52:56,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:56,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:57,047 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 00:52:57,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:57,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076565670] [2024-06-28 00:52:57,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076565670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:57,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:57,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:52:57,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279432417] [2024-06-28 00:52:57,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:57,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:52:57,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:57,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:52:57,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:52:57,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:57,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 251 transitions, 3993 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:57,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:57,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:57,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:57,711 INFO L124 PetriNetUnfolderBase]: 1405/2510 cut-off events. [2024-06-28 00:52:57,711 INFO L125 PetriNetUnfolderBase]: For 42527/42527 co-relation queries the response was YES. [2024-06-28 00:52:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17439 conditions, 2510 events. 1405/2510 cut-off events. For 42527/42527 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 14734 event pairs, 252 based on Foata normal form. 2/2424 useless extension candidates. Maximal degree in co-relation 17344. Up to 1730 conditions per place. [2024-06-28 00:52:57,731 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 221 selfloop transitions, 79 changer transitions 0/306 dead transitions. [2024-06-28 00:52:57,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 306 transitions, 5098 flow [2024-06-28 00:52:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:57,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:57,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:52:57,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 00:52:57,732 INFO L175 Difference]: Start difference. First operand has 187 places, 251 transitions, 3993 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:52:57,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 306 transitions, 5098 flow [2024-06-28 00:52:57,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 306 transitions, 4922 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 00:52:57,826 INFO L231 Difference]: Finished difference. Result has 194 places, 271 transitions, 4400 flow [2024-06-28 00:52:57,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4400, PETRI_PLACES=194, PETRI_TRANSITIONS=271} [2024-06-28 00:52:57,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 00:52:57,827 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 271 transitions, 4400 flow [2024-06-28 00:52:57,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:52:57,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:57,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:57,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 00:52:57,827 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 00:52:57,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash -308019834, now seen corresponding path program 2 times [2024-06-28 00:52:57,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:57,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018998986] [2024-06-28 00:52:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:57,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:52:58,701 INFO 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 00:52:58,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:52:58,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018998986] [2024-06-28 00:52:58,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018998986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:52:58,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:52:58,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:52:58,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114628212] [2024-06-28 00:52:58,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:52:58,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:52:58,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:52:58,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:52:58,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:52:58,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:52:58,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 271 transitions, 4400 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 00:52:58,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:52:58,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:52:58,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:52:59,555 INFO L124 PetriNetUnfolderBase]: 1421/2523 cut-off events. [2024-06-28 00:52:59,555 INFO L125 PetriNetUnfolderBase]: For 42844/42844 co-relation queries the response was YES. [2024-06-28 00:52:59,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18032 conditions, 2523 events. 1421/2523 cut-off events. For 42844/42844 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 14661 event pairs, 303 based on Foata normal form. 1/2441 useless extension candidates. Maximal degree in co-relation 17932. Up to 1865 conditions per place. [2024-06-28 00:52:59,578 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 222 selfloop transitions, 82 changer transitions 0/310 dead transitions. [2024-06-28 00:52:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 310 transitions, 5250 flow [2024-06-28 00:52:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:52:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:52:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 00:52:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 00:52:59,579 INFO L175 Difference]: Start difference. First operand has 194 places, 271 transitions, 4400 flow. Second operand 9 states and 156 transitions. [2024-06-28 00:52:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 310 transitions, 5250 flow [2024-06-28 00:52:59,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 310 transitions, 5150 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-28 00:52:59,695 INFO L231 Difference]: Finished difference. Result has 201 places, 275 transitions, 4548 flow [2024-06-28 00:52:59,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4300, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4548, PETRI_PLACES=201, PETRI_TRANSITIONS=275} [2024-06-28 00:52:59,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 00:52:59,696 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 275 transitions, 4548 flow [2024-06-28 00:52:59,696 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 00:52:59,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:52:59,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:52:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 00:52:59,697 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 00:52:59,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:52:59,697 INFO L85 PathProgramCache]: Analyzing trace with hash 518817564, now seen corresponding path program 3 times [2024-06-28 00:52:59,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:52:59,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768965295] [2024-06-28 00:52:59,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:52:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:52:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:00,516 INFO 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 00:53:00,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768965295] [2024-06-28 00:53:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768965295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:00,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:00,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318068412] [2024-06-28 00:53:00,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:00,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:00,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:00,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:00,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:00,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:00,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 275 transitions, 4548 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 00:53:00,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:00,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:00,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:01,304 INFO L124 PetriNetUnfolderBase]: 1485/2641 cut-off events. [2024-06-28 00:53:01,304 INFO L125 PetriNetUnfolderBase]: For 49964/49964 co-relation queries the response was YES. [2024-06-28 00:53:01,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18994 conditions, 2641 events. 1485/2641 cut-off events. For 49964/49964 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 15609 event pairs, 365 based on Foata normal form. 1/2556 useless extension candidates. Maximal degree in co-relation 18892. Up to 2212 conditions per place. [2024-06-28 00:53:01,328 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 282 selfloop transitions, 30 changer transitions 0/318 dead transitions. [2024-06-28 00:53:01,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 318 transitions, 5631 flow [2024-06-28 00:53:01,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:01,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:01,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 00:53:01,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2024-06-28 00:53:01,329 INFO L175 Difference]: Start difference. First operand has 201 places, 275 transitions, 4548 flow. Second operand 9 states and 152 transitions. [2024-06-28 00:53:01,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 318 transitions, 5631 flow [2024-06-28 00:53:01,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 318 transitions, 5473 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:01,449 INFO L231 Difference]: Finished difference. Result has 206 places, 284 transitions, 4624 flow [2024-06-28 00:53:01,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4624, PETRI_PLACES=206, PETRI_TRANSITIONS=284} [2024-06-28 00:53:01,450 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-28 00:53:01,450 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 284 transitions, 4624 flow [2024-06-28 00:53:01,450 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 00:53:01,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:01,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 00:53:01,451 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 00:53:01,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:01,451 INFO L85 PathProgramCache]: Analyzing trace with hash 518817285, now seen corresponding path program 4 times [2024-06-28 00:53:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:01,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484887862] [2024-06-28 00:53:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:01,997 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 00:53:01,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:01,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484887862] [2024-06-28 00:53:01,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484887862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:01,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:01,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:01,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138932319] [2024-06-28 00:53:01,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:01,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:01,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:02,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:02,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 284 transitions, 4624 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:02,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:02,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:02,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:02,647 INFO L124 PetriNetUnfolderBase]: 1511/2673 cut-off events. [2024-06-28 00:53:02,647 INFO L125 PetriNetUnfolderBase]: For 52912/52912 co-relation queries the response was YES. [2024-06-28 00:53:02,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 2673 events. 1511/2673 cut-off events. For 52912/52912 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15787 event pairs, 373 based on Foata normal form. 2/2592 useless extension candidates. Maximal degree in co-relation 19551. Up to 2335 conditions per place. [2024-06-28 00:53:02,672 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 287 selfloop transitions, 21 changer transitions 0/314 dead transitions. [2024-06-28 00:53:02,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 314 transitions, 5433 flow [2024-06-28 00:53:02,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:02,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 00:53:02,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44932432432432434 [2024-06-28 00:53:02,673 INFO L175 Difference]: Start difference. First operand has 206 places, 284 transitions, 4624 flow. Second operand 8 states and 133 transitions. [2024-06-28 00:53:02,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 314 transitions, 5433 flow [2024-06-28 00:53:02,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 314 transitions, 5335 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:02,808 INFO L231 Difference]: Finished difference. Result has 210 places, 287 transitions, 4656 flow [2024-06-28 00:53:02,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4526, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4656, PETRI_PLACES=210, PETRI_TRANSITIONS=287} [2024-06-28 00:53:02,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-28 00:53:02,808 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 287 transitions, 4656 flow [2024-06-28 00:53:02,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:02,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:02,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:02,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 00:53:02,809 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 00:53:02,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:02,810 INFO L85 PathProgramCache]: Analyzing trace with hash -900276008, now seen corresponding path program 4 times [2024-06-28 00:53:02,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:02,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392533561] [2024-06-28 00:53:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:03,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:03,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392533561] [2024-06-28 00:53:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392533561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:03,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167365817] [2024-06-28 00:53:03,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:03,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:03,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:03,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:03,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:03,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 287 transitions, 4656 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 00:53:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:03,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:04,226 INFO L124 PetriNetUnfolderBase]: 1528/2708 cut-off events. [2024-06-28 00:53:04,226 INFO L125 PetriNetUnfolderBase]: For 53119/53119 co-relation queries the response was YES. [2024-06-28 00:53:04,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19796 conditions, 2708 events. 1528/2708 cut-off events. For 53119/53119 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16029 event pairs, 367 based on Foata normal form. 2/2624 useless extension candidates. Maximal degree in co-relation 19689. Up to 2326 conditions per place. [2024-06-28 00:53:04,251 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 296 selfloop transitions, 28 changer transitions 0/330 dead transitions. [2024-06-28 00:53:04,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 330 transitions, 5668 flow [2024-06-28 00:53:04,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 00:53:04,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 00:53:04,253 INFO L175 Difference]: Start difference. First operand has 210 places, 287 transitions, 4656 flow. Second operand 10 states and 164 transitions. [2024-06-28 00:53:04,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 330 transitions, 5668 flow [2024-06-28 00:53:04,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 330 transitions, 5540 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:04,399 INFO L231 Difference]: Finished difference. Result has 215 places, 294 transitions, 4736 flow [2024-06-28 00:53:04,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4538, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4736, PETRI_PLACES=215, PETRI_TRANSITIONS=294} [2024-06-28 00:53:04,400 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-28 00:53:04,400 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 294 transitions, 4736 flow [2024-06-28 00:53:04,400 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 00:53:04,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:04,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 00:53:04,401 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 00:53:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:04,401 INFO L85 PathProgramCache]: Analyzing trace with hash 509620794, now seen corresponding path program 5 times [2024-06-28 00:53:04,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:04,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696686587] [2024-06-28 00:53:04,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:05,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:05,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:05,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696686587] [2024-06-28 00:53:05,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696686587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:05,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:05,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:05,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015929569] [2024-06-28 00:53:05,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:05,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:05,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:05,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:05,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:05,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:05,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 294 transitions, 4736 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 00:53:05,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:05,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:05,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:06,005 INFO L124 PetriNetUnfolderBase]: 1534/2720 cut-off events. [2024-06-28 00:53:06,006 INFO L125 PetriNetUnfolderBase]: For 52629/52629 co-relation queries the response was YES. [2024-06-28 00:53:06,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19815 conditions, 2720 events. 1534/2720 cut-off events. For 52629/52629 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16123 event pairs, 221 based on Foata normal form. 1/2631 useless extension candidates. Maximal degree in co-relation 19706. Up to 1884 conditions per place. [2024-06-28 00:53:06,028 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 222 selfloop transitions, 107 changer transitions 0/335 dead transitions. [2024-06-28 00:53:06,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 335 transitions, 5682 flow [2024-06-28 00:53:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:06,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:06,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 00:53:06,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 00:53:06,029 INFO L175 Difference]: Start difference. First operand has 215 places, 294 transitions, 4736 flow. Second operand 9 states and 159 transitions. [2024-06-28 00:53:06,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 335 transitions, 5682 flow [2024-06-28 00:53:06,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 335 transitions, 5584 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:06,172 INFO L231 Difference]: Finished difference. Result has 219 places, 298 transitions, 4956 flow [2024-06-28 00:53:06,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4956, PETRI_PLACES=219, PETRI_TRANSITIONS=298} [2024-06-28 00:53:06,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-28 00:53:06,173 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 298 transitions, 4956 flow [2024-06-28 00:53:06,173 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 00:53:06,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:06,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 00:53:06,173 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 00:53:06,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash 509620515, now seen corresponding path program 5 times [2024-06-28 00:53:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734493949] [2024-06-28 00:53:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:06,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:06,783 INFO 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 00:53:06,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734493949] [2024-06-28 00:53:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734493949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:06,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:06,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699758046] [2024-06-28 00:53:06,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:06,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:06,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:06,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:06,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:06,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:06,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 298 transitions, 4956 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:06,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:06,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:06,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:07,662 INFO L124 PetriNetUnfolderBase]: 1586/2805 cut-off events. [2024-06-28 00:53:07,663 INFO L125 PetriNetUnfolderBase]: For 62595/62595 co-relation queries the response was YES. [2024-06-28 00:53:07,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21059 conditions, 2805 events. 1586/2805 cut-off events. For 62595/62595 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16728 event pairs, 218 based on Foata normal form. 2/2715 useless extension candidates. Maximal degree in co-relation 20947. Up to 1745 conditions per place. [2024-06-28 00:53:07,687 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 240 selfloop transitions, 98 changer transitions 0/344 dead transitions. [2024-06-28 00:53:07,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 344 transitions, 6208 flow [2024-06-28 00:53:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:07,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 00:53:07,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-28 00:53:07,689 INFO L175 Difference]: Start difference. First operand has 219 places, 298 transitions, 4956 flow. Second operand 9 states and 159 transitions. [2024-06-28 00:53:07,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 344 transitions, 6208 flow [2024-06-28 00:53:07,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 344 transitions, 5973 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:07,874 INFO L231 Difference]: Finished difference. Result has 223 places, 308 transitions, 5179 flow [2024-06-28 00:53:07,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4721, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5179, PETRI_PLACES=223, PETRI_TRANSITIONS=308} [2024-06-28 00:53:07,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 182 predicate places. [2024-06-28 00:53:07,875 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 308 transitions, 5179 flow [2024-06-28 00:53:07,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:07,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:07,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:07,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 00:53:07,876 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 00:53:07,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -909806927, now seen corresponding path program 6 times [2024-06-28 00:53:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510588384] [2024-06-28 00:53:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:08,470 INFO 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 00:53:08,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:08,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510588384] [2024-06-28 00:53:08,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510588384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:08,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:08,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:08,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480119755] [2024-06-28 00:53:08,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:08,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:08,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:08,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:08,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:08,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 308 transitions, 5179 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:08,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:08,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:08,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:09,232 INFO L124 PetriNetUnfolderBase]: 1582/2806 cut-off events. [2024-06-28 00:53:09,232 INFO L125 PetriNetUnfolderBase]: For 62547/62547 co-relation queries the response was YES. [2024-06-28 00:53:09,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21276 conditions, 2806 events. 1582/2806 cut-off events. For 62547/62547 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 16815 event pairs, 230 based on Foata normal form. 2/2714 useless extension candidates. Maximal degree in co-relation 21162. Up to 1778 conditions per place. [2024-06-28 00:53:09,259 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 242 selfloop transitions, 92 changer transitions 0/340 dead transitions. [2024-06-28 00:53:09,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 340 transitions, 6067 flow [2024-06-28 00:53:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:53:09,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 00:53:09,264 INFO L175 Difference]: Start difference. First operand has 223 places, 308 transitions, 5179 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:53:09,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 340 transitions, 6067 flow [2024-06-28 00:53:09,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 340 transitions, 5838 flow, removed 93 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:09,434 INFO L231 Difference]: Finished difference. Result has 228 places, 308 transitions, 5141 flow [2024-06-28 00:53:09,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4950, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5141, PETRI_PLACES=228, PETRI_TRANSITIONS=308} [2024-06-28 00:53:09,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 00:53:09,434 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 308 transitions, 5141 flow [2024-06-28 00:53:09,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:09,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:09,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:09,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 00:53:09,435 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 00:53:09,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:09,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1582293156, now seen corresponding path program 3 times [2024-06-28 00:53:09,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:09,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750744680] [2024-06-28 00:53:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:09,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:09,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:09,966 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 00:53:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750744680] [2024-06-28 00:53:09,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750744680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:09,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:09,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:09,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463319860] [2024-06-28 00:53:09,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:09,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:09,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:09,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:09,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:10,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:10,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 308 transitions, 5141 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:10,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:10,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:10,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:10,810 INFO L124 PetriNetUnfolderBase]: 1667/2931 cut-off events. [2024-06-28 00:53:10,810 INFO L125 PetriNetUnfolderBase]: For 63623/63623 co-relation queries the response was YES. [2024-06-28 00:53:10,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22716 conditions, 2931 events. 1667/2931 cut-off events. For 63623/63623 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 17494 event pairs, 339 based on Foata normal form. 1/2842 useless extension candidates. Maximal degree in co-relation 22600. Up to 2280 conditions per place. [2024-06-28 00:53:10,843 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 265 selfloop transitions, 109 changer transitions 0/380 dead transitions. [2024-06-28 00:53:10,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 380 transitions, 7051 flow [2024-06-28 00:53:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:10,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 00:53:10,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 00:53:10,845 INFO L175 Difference]: Start difference. First operand has 228 places, 308 transitions, 5141 flow. Second operand 8 states and 143 transitions. [2024-06-28 00:53:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 380 transitions, 7051 flow [2024-06-28 00:53:11,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 380 transitions, 6786 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:11,023 INFO L231 Difference]: Finished difference. Result has 232 places, 352 transitions, 6230 flow [2024-06-28 00:53:11,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4926, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6230, PETRI_PLACES=232, PETRI_TRANSITIONS=352} [2024-06-28 00:53:11,023 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 191 predicate places. [2024-06-28 00:53:11,024 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 352 transitions, 6230 flow [2024-06-28 00:53:11,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:11,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:11,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 00:53:11,024 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 00:53:11,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 731761137, now seen corresponding path program 7 times [2024-06-28 00:53:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771581208] [2024-06-28 00:53:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:11,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:11,556 INFO 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 00:53:11,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:11,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771581208] [2024-06-28 00:53:11,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771581208] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:11,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:11,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 00:53:11,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802699087] [2024-06-28 00:53:11,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:11,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 00:53:11,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:11,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 00:53:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 00:53:11,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:11,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 352 transitions, 6230 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:11,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:11,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:11,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:12,430 INFO L124 PetriNetUnfolderBase]: 1753/3095 cut-off events. [2024-06-28 00:53:12,430 INFO L125 PetriNetUnfolderBase]: For 68148/68148 co-relation queries the response was YES. [2024-06-28 00:53:12,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24253 conditions, 3095 events. 1753/3095 cut-off events. For 68148/68148 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18793 event pairs, 327 based on Foata normal form. 2/2997 useless extension candidates. Maximal degree in co-relation 24133. Up to 2147 conditions per place. [2024-06-28 00:53:12,461 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 279 selfloop transitions, 127 changer transitions 0/412 dead transitions. [2024-06-28 00:53:12,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 412 transitions, 7632 flow [2024-06-28 00:53:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-28 00:53:12,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-28 00:53:12,462 INFO L175 Difference]: Start difference. First operand has 232 places, 352 transitions, 6230 flow. Second operand 9 states and 163 transitions. [2024-06-28 00:53:12,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 412 transitions, 7632 flow [2024-06-28 00:53:12,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 412 transitions, 7515 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-06-28 00:53:12,673 INFO L231 Difference]: Finished difference. Result has 241 places, 373 transitions, 6852 flow [2024-06-28 00:53:12,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6852, PETRI_PLACES=241, PETRI_TRANSITIONS=373} [2024-06-28 00:53:12,674 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 00:53:12,674 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 373 transitions, 6852 flow [2024-06-28 00:53:12,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 00:53:12,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:12,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:12,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 00:53:12,674 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 00:53:12,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash -900264104, now seen corresponding path program 1 times [2024-06-28 00:53:12,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:12,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6005259] [2024-06-28 00:53:12,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:12,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:13,992 INFO 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 00:53:13,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6005259] [2024-06-28 00:53:13,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6005259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:13,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:13,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910128801] [2024-06-28 00:53:13,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:13,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:13,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:14,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:14,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 373 transitions, 6852 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 00:53:14,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:14,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:14,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:15,050 INFO L124 PetriNetUnfolderBase]: 1757/3123 cut-off events. [2024-06-28 00:53:15,050 INFO L125 PetriNetUnfolderBase]: For 70426/70426 co-relation queries the response was YES. [2024-06-28 00:53:15,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 3123 events. 1757/3123 cut-off events. For 70426/70426 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 19204 event pairs, 415 based on Foata normal form. 2/3021 useless extension candidates. Maximal degree in co-relation 24629. Up to 2695 conditions per place. [2024-06-28 00:53:15,075 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 378 selfloop transitions, 22 changer transitions 0/406 dead transitions. [2024-06-28 00:53:15,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 406 transitions, 7887 flow [2024-06-28 00:53:15,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:53:15,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 00:53:15,076 INFO L175 Difference]: Start difference. First operand has 241 places, 373 transitions, 6852 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:53:15,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 406 transitions, 7887 flow [2024-06-28 00:53:15,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 406 transitions, 7530 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:15,272 INFO L231 Difference]: Finished difference. Result has 243 places, 374 transitions, 6563 flow [2024-06-28 00:53:15,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6495, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6563, PETRI_PLACES=243, PETRI_TRANSITIONS=374} [2024-06-28 00:53:15,273 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 00:53:15,273 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 374 transitions, 6563 flow [2024-06-28 00:53:15,274 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 00:53:15,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:15,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:15,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 00:53:15,277 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:15,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:15,277 INFO L85 PathProgramCache]: Analyzing trace with hash -2129136410, now seen corresponding path program 1 times [2024-06-28 00:53:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228513681] [2024-06-28 00:53:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:15,328 INFO 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 00:53:15,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:15,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228513681] [2024-06-28 00:53:15,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228513681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:15,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:15,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:53:15,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328939967] [2024-06-28 00:53:15,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:15,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:53:15,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:15,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:53:15,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:53:15,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 00:53:15,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 374 transitions, 6563 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:15,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:15,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 00:53:15,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:15,661 INFO L124 PetriNetUnfolderBase]: 846/1583 cut-off events. [2024-06-28 00:53:15,661 INFO L125 PetriNetUnfolderBase]: For 39664/39720 co-relation queries the response was YES. [2024-06-28 00:53:15,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12269 conditions, 1583 events. 846/1583 cut-off events. For 39664/39720 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8889 event pairs, 191 based on Foata normal form. 167/1668 useless extension candidates. Maximal degree in co-relation 12147. Up to 571 conditions per place. [2024-06-28 00:53:15,677 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 125 selfloop transitions, 48 changer transitions 0/236 dead transitions. [2024-06-28 00:53:15,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 236 transitions, 4640 flow [2024-06-28 00:53:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:53:15,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:53:15,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 99 transitions. [2024-06-28 00:53:15,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.668918918918919 [2024-06-28 00:53:15,679 INFO L175 Difference]: Start difference. First operand has 243 places, 374 transitions, 6563 flow. Second operand 4 states and 99 transitions. [2024-06-28 00:53:15,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 236 transitions, 4640 flow [2024-06-28 00:53:15,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 236 transitions, 3634 flow, removed 54 selfloop flow, removed 60 redundant places. [2024-06-28 00:53:15,786 INFO L231 Difference]: Finished difference. Result has 188 places, 215 transitions, 3288 flow [2024-06-28 00:53:15,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3288, PETRI_PLACES=188, PETRI_TRANSITIONS=215} [2024-06-28 00:53:15,787 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 00:53:15,787 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 215 transitions, 3288 flow [2024-06-28 00:53:15,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:53:15,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:15,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:15,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 00:53:15,788 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 00:53:15,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1045172018, now seen corresponding path program 1 times [2024-06-28 00:53:15,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:15,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577594117] [2024-06-28 00:53:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:16,456 INFO 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 00:53:16,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:16,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577594117] [2024-06-28 00:53:16,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577594117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:16,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467340161] [2024-06-28 00:53:16,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:16,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:16,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 215 transitions, 3288 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:16,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:16,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:16,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:16,964 INFO L124 PetriNetUnfolderBase]: 917/1653 cut-off events. [2024-06-28 00:53:16,965 INFO L125 PetriNetUnfolderBase]: For 36868/36868 co-relation queries the response was YES. [2024-06-28 00:53:16,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11868 conditions, 1653 events. 917/1653 cut-off events. For 36868/36868 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8669 event pairs, 201 based on Foata normal form. 2/1573 useless extension candidates. Maximal degree in co-relation 11769. Up to 1315 conditions per place. [2024-06-28 00:53:16,979 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 156 selfloop transitions, 73 changer transitions 0/236 dead transitions. [2024-06-28 00:53:16,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 3871 flow [2024-06-28 00:53:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:16,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:16,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:53:16,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 00:53:16,981 INFO L175 Difference]: Start difference. First operand has 188 places, 215 transitions, 3288 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:53:16,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 3871 flow [2024-06-28 00:53:17,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 236 transitions, 3772 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 00:53:17,094 INFO L231 Difference]: Finished difference. Result has 193 places, 217 transitions, 3394 flow [2024-06-28 00:53:17,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3394, PETRI_PLACES=193, PETRI_TRANSITIONS=217} [2024-06-28 00:53:17,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-28 00:53:17,095 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 217 transitions, 3394 flow [2024-06-28 00:53:17,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:17,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:17,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:17,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 00:53:17,095 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 00:53:17,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1301909266, now seen corresponding path program 2 times [2024-06-28 00:53:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807779414] [2024-06-28 00:53:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:17,690 INFO 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 00:53:17,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:17,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807779414] [2024-06-28 00:53:17,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807779414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:17,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:17,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:17,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421355931] [2024-06-28 00:53:17,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:17,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:17,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:17,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:17,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:17,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:17,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 217 transitions, 3394 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:17,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:17,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:17,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:18,264 INFO L124 PetriNetUnfolderBase]: 933/1678 cut-off events. [2024-06-28 00:53:18,264 INFO L125 PetriNetUnfolderBase]: For 37919/37919 co-relation queries the response was YES. [2024-06-28 00:53:18,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11970 conditions, 1678 events. 933/1678 cut-off events. For 37919/37919 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8796 event pairs, 107 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 11870. Up to 1181 conditions per place. [2024-06-28 00:53:18,277 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 188 selfloop transitions, 56 changer transitions 0/251 dead transitions. [2024-06-28 00:53:18,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 251 transitions, 4087 flow [2024-06-28 00:53:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:18,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:18,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 00:53:18,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:53:18,278 INFO L175 Difference]: Start difference. First operand has 193 places, 217 transitions, 3394 flow. Second operand 8 states and 128 transitions. [2024-06-28 00:53:18,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 251 transitions, 4087 flow [2024-06-28 00:53:18,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 251 transitions, 3906 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:18,385 INFO L231 Difference]: Finished difference. Result has 197 places, 230 transitions, 3518 flow [2024-06-28 00:53:18,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3518, PETRI_PLACES=197, PETRI_TRANSITIONS=230} [2024-06-28 00:53:18,386 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-28 00:53:18,386 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 230 transitions, 3518 flow [2024-06-28 00:53:18,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:18,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:18,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:18,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 00:53:18,387 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 00:53:18,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:18,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1540795522, now seen corresponding path program 1 times [2024-06-28 00:53:18,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:18,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329087540] [2024-06-28 00:53:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:18,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:19,019 INFO 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 00:53:19,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329087540] [2024-06-28 00:53:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329087540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081572464] [2024-06-28 00:53:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:19,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:19,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:19,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:19,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 230 transitions, 3518 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:19,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:19,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:19,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:19,526 INFO L124 PetriNetUnfolderBase]: 939/1686 cut-off events. [2024-06-28 00:53:19,526 INFO L125 PetriNetUnfolderBase]: For 39550/39550 co-relation queries the response was YES. [2024-06-28 00:53:19,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12232 conditions, 1686 events. 939/1686 cut-off events. For 39550/39550 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 8809 event pairs, 189 based on Foata normal form. 1/1604 useless extension candidates. Maximal degree in co-relation 12129. Up to 1326 conditions per place. [2024-06-28 00:53:19,540 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 167 selfloop transitions, 76 changer transitions 0/250 dead transitions. [2024-06-28 00:53:19,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 250 transitions, 4127 flow [2024-06-28 00:53:19,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:19,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:53:19,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 00:53:19,542 INFO L175 Difference]: Start difference. First operand has 197 places, 230 transitions, 3518 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:53:19,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 250 transitions, 4127 flow [2024-06-28 00:53:19,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 250 transitions, 3995 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 00:53:19,675 INFO L231 Difference]: Finished difference. Result has 201 places, 232 transitions, 3595 flow [2024-06-28 00:53:19,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3595, PETRI_PLACES=201, PETRI_TRANSITIONS=232} [2024-06-28 00:53:19,676 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-28 00:53:19,676 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 232 transitions, 3595 flow [2024-06-28 00:53:19,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:19,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:19,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:19,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 00:53:19,676 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 00:53:19,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:19,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1457678446, now seen corresponding path program 3 times [2024-06-28 00:53:19,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:19,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857563454] [2024-06-28 00:53:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:20,431 INFO 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 00:53:20,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:20,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857563454] [2024-06-28 00:53:20,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857563454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:20,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:20,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:20,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993582362] [2024-06-28 00:53:20,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:20,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:20,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:20,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:20,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:20,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 232 transitions, 3595 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:20,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:20,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:20,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:21,044 INFO L124 PetriNetUnfolderBase]: 977/1751 cut-off events. [2024-06-28 00:53:21,044 INFO L125 PetriNetUnfolderBase]: For 42248/42250 co-relation queries the response was YES. [2024-06-28 00:53:21,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12620 conditions, 1751 events. 977/1751 cut-off events. For 42248/42250 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9241 event pairs, 210 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 12516. Up to 1409 conditions per place. [2024-06-28 00:53:21,059 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 180 selfloop transitions, 68 changer transitions 0/255 dead transitions. [2024-06-28 00:53:21,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 255 transitions, 4259 flow [2024-06-28 00:53:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:21,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:53:21,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 00:53:21,060 INFO L175 Difference]: Start difference. First operand has 201 places, 232 transitions, 3595 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:53:21,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 255 transitions, 4259 flow [2024-06-28 00:53:21,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 255 transitions, 4089 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:21,174 INFO L231 Difference]: Finished difference. Result has 205 places, 238 transitions, 3687 flow [2024-06-28 00:53:21,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3428, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3687, PETRI_PLACES=205, PETRI_TRANSITIONS=238} [2024-06-28 00:53:21,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-28 00:53:21,175 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 238 transitions, 3687 flow [2024-06-28 00:53:21,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:21,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:21,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:21,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 00:53:21,176 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 00:53:21,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:21,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1457673796, now seen corresponding path program 4 times [2024-06-28 00:53:21,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:21,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548664493] [2024-06-28 00:53:21,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:21,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:21,757 INFO 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 00:53:21,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:21,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548664493] [2024-06-28 00:53:21,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548664493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:21,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:21,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:21,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153386054] [2024-06-28 00:53:21,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:21,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:21,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:21,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:21,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 238 transitions, 3687 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:21,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:21,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:21,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:22,411 INFO L124 PetriNetUnfolderBase]: 993/1780 cut-off events. [2024-06-28 00:53:22,411 INFO L125 PetriNetUnfolderBase]: For 44883/44883 co-relation queries the response was YES. [2024-06-28 00:53:22,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12918 conditions, 1780 events. 993/1780 cut-off events. For 44883/44883 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 9461 event pairs, 202 based on Foata normal form. 2/1700 useless extension candidates. Maximal degree in co-relation 12812. Up to 1417 conditions per place. [2024-06-28 00:53:22,424 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 189 selfloop transitions, 66 changer transitions 0/262 dead transitions. [2024-06-28 00:53:22,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 262 transitions, 4344 flow [2024-06-28 00:53:22,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:53:22,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42905405405405406 [2024-06-28 00:53:22,425 INFO L175 Difference]: Start difference. First operand has 205 places, 238 transitions, 3687 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:53:22,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 262 transitions, 4344 flow [2024-06-28 00:53:22,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 262 transitions, 4187 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:22,549 INFO L231 Difference]: Finished difference. Result has 208 places, 241 transitions, 3746 flow [2024-06-28 00:53:22,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3530, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3746, PETRI_PLACES=208, PETRI_TRANSITIONS=241} [2024-06-28 00:53:22,550 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 00:53:22,550 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 241 transitions, 3746 flow [2024-06-28 00:53:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:22,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:22,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:22,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 00:53:22,550 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 00:53:22,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash -975673156, now seen corresponding path program 5 times [2024-06-28 00:53:22,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:22,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587469593] [2024-06-28 00:53:22,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:22,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:23,163 INFO 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 00:53:23,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:23,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587469593] [2024-06-28 00:53:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587469593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:23,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595859740] [2024-06-28 00:53:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:23,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:23,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:23,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:23,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:23,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:23,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 241 transitions, 3746 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:23,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:23,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:23,785 INFO L124 PetriNetUnfolderBase]: 1009/1814 cut-off events. [2024-06-28 00:53:23,786 INFO L125 PetriNetUnfolderBase]: For 47776/47776 co-relation queries the response was YES. [2024-06-28 00:53:23,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13195 conditions, 1814 events. 1009/1814 cut-off events. For 47776/47776 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9732 event pairs, 113 based on Foata normal form. 2/1738 useless extension candidates. Maximal degree in co-relation 13087. Up to 1400 conditions per place. [2024-06-28 00:53:23,801 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 190 selfloop transitions, 70 changer transitions 0/267 dead transitions. [2024-06-28 00:53:23,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 267 transitions, 4435 flow [2024-06-28 00:53:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:23,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 00:53:23,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-28 00:53:23,802 INFO L175 Difference]: Start difference. First operand has 208 places, 241 transitions, 3746 flow. Second operand 8 states and 131 transitions. [2024-06-28 00:53:23,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 267 transitions, 4435 flow [2024-06-28 00:53:23,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 267 transitions, 4267 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:23,943 INFO L231 Difference]: Finished difference. Result has 211 places, 243 transitions, 3788 flow [2024-06-28 00:53:23,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3578, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3788, PETRI_PLACES=211, PETRI_TRANSITIONS=243} [2024-06-28 00:53:23,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-28 00:53:23,943 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 243 transitions, 3788 flow [2024-06-28 00:53:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:23,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:23,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:23,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 00:53:23,944 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 00:53:23,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 823429416, now seen corresponding path program 2 times [2024-06-28 00:53:23,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:23,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305512666] [2024-06-28 00:53:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:23,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:24,625 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 00:53:24,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:24,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305512666] [2024-06-28 00:53:24,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305512666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:24,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:24,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:24,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521118366] [2024-06-28 00:53:24,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:24,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:24,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:24,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:24,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:24,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 243 transitions, 3788 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:24,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:24,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:24,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:25,153 INFO L124 PetriNetUnfolderBase]: 1007/1811 cut-off events. [2024-06-28 00:53:25,154 INFO L125 PetriNetUnfolderBase]: For 47038/47038 co-relation queries the response was YES. [2024-06-28 00:53:25,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13139 conditions, 1811 events. 1007/1811 cut-off events. For 47038/47038 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9748 event pairs, 212 based on Foata normal form. 1/1727 useless extension candidates. Maximal degree in co-relation 13030. Up to 1460 conditions per place. [2024-06-28 00:53:25,169 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 178 selfloop transitions, 81 changer transitions 0/266 dead transitions. [2024-06-28 00:53:25,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 266 transitions, 4455 flow [2024-06-28 00:53:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:25,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:25,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 00:53:25,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42905405405405406 [2024-06-28 00:53:25,170 INFO L175 Difference]: Start difference. First operand has 211 places, 243 transitions, 3788 flow. Second operand 8 states and 127 transitions. [2024-06-28 00:53:25,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 266 transitions, 4455 flow [2024-06-28 00:53:25,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 266 transitions, 4239 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:25,297 INFO L231 Difference]: Finished difference. Result has 212 places, 245 transitions, 3797 flow [2024-06-28 00:53:25,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3572, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3797, PETRI_PLACES=212, PETRI_TRANSITIONS=245} [2024-06-28 00:53:25,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-28 00:53:25,298 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 245 transitions, 3797 flow [2024-06-28 00:53:25,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:25,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:25,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:25,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 00:53:25,299 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 00:53:25,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 823429230, now seen corresponding path program 6 times [2024-06-28 00:53:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:25,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359119306] [2024-06-28 00:53:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:25,872 INFO 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 00:53:25,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:25,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359119306] [2024-06-28 00:53:25,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359119306] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:25,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:25,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:25,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717206927] [2024-06-28 00:53:25,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:25,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:25,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:25,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:25,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:25,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 245 transitions, 3797 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:25,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:25,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:25,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:26,422 INFO L124 PetriNetUnfolderBase]: 1023/1840 cut-off events. [2024-06-28 00:53:26,423 INFO L125 PetriNetUnfolderBase]: For 49369/49369 co-relation queries the response was YES. [2024-06-28 00:53:26,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13255 conditions, 1840 events. 1023/1840 cut-off events. For 49369/49369 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9924 event pairs, 214 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 13146. Up to 1484 conditions per place. [2024-06-28 00:53:26,437 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 184 selfloop transitions, 79 changer transitions 0/270 dead transitions. [2024-06-28 00:53:26,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 270 transitions, 4498 flow [2024-06-28 00:53:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 00:53:26,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358108108108108 [2024-06-28 00:53:26,438 INFO L175 Difference]: Start difference. First operand has 212 places, 245 transitions, 3797 flow. Second operand 8 states and 129 transitions. [2024-06-28 00:53:26,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 270 transitions, 4498 flow [2024-06-28 00:53:26,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 270 transitions, 4315 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:26,570 INFO L231 Difference]: Finished difference. Result has 214 places, 247 transitions, 3851 flow [2024-06-28 00:53:26,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3614, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3851, PETRI_PLACES=214, PETRI_TRANSITIONS=247} [2024-06-28 00:53:26,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 00:53:26,571 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 247 transitions, 3851 flow [2024-06-28 00:53:26,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:26,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:26,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:26,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 00:53:26,572 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 00:53:26,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 829858320, now seen corresponding path program 7 times [2024-06-28 00:53:26,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:26,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70239737] [2024-06-28 00:53:26,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:26,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:26,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:27,059 INFO 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 00:53:27,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:27,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70239737] [2024-06-28 00:53:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70239737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:27,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:27,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:27,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188758398] [2024-06-28 00:53:27,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:27,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:27,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:27,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:27,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:27,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 247 transitions, 3851 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:27,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:27,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:27,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:27,578 INFO L124 PetriNetUnfolderBase]: 1039/1870 cut-off events. [2024-06-28 00:53:27,579 INFO L125 PetriNetUnfolderBase]: For 53114/53114 co-relation queries the response was YES. [2024-06-28 00:53:27,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13545 conditions, 1870 events. 1039/1870 cut-off events. For 53114/53114 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10147 event pairs, 208 based on Foata normal form. 2/1783 useless extension candidates. Maximal degree in co-relation 13435. Up to 1470 conditions per place. [2024-06-28 00:53:27,593 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 182 selfloop transitions, 79 changer transitions 0/268 dead transitions. [2024-06-28 00:53:27,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 268 transitions, 4521 flow [2024-06-28 00:53:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:27,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 00:53:27,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 00:53:27,594 INFO L175 Difference]: Start difference. First operand has 214 places, 247 transitions, 3851 flow. Second operand 8 states and 126 transitions. [2024-06-28 00:53:27,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 268 transitions, 4521 flow [2024-06-28 00:53:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 268 transitions, 4349 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:27,742 INFO L231 Difference]: Finished difference. Result has 217 places, 249 transitions, 3916 flow [2024-06-28 00:53:27,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3679, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3916, PETRI_PLACES=217, PETRI_TRANSITIONS=249} [2024-06-28 00:53:27,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 176 predicate places. [2024-06-28 00:53:27,743 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 249 transitions, 3916 flow [2024-06-28 00:53:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:27,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:27,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:27,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 00:53:27,744 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 00:53:27,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:27,744 INFO L85 PathProgramCache]: Analyzing trace with hash 829865264, now seen corresponding path program 1 times [2024-06-28 00:53:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:27,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010583484] [2024-06-28 00:53:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:27,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:28,604 INFO 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 00:53:28,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:28,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010583484] [2024-06-28 00:53:28,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010583484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:28,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:28,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:28,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957229333] [2024-06-28 00:53:28,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:28,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:28,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:28,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 249 transitions, 3916 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:28,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:28,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:28,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:29,171 INFO L124 PetriNetUnfolderBase]: 1050/1887 cut-off events. [2024-06-28 00:53:29,171 INFO L125 PetriNetUnfolderBase]: For 54924/54924 co-relation queries the response was YES. [2024-06-28 00:53:29,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13672 conditions, 1887 events. 1050/1887 cut-off events. For 54924/54924 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10252 event pairs, 208 based on Foata normal form. 2/1798 useless extension candidates. Maximal degree in co-relation 13561. Up to 1461 conditions per place. [2024-06-28 00:53:29,186 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 179 selfloop transitions, 85 changer transitions 0/271 dead transitions. [2024-06-28 00:53:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 4570 flow [2024-06-28 00:53:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:53:29,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-28 00:53:29,188 INFO L175 Difference]: Start difference. First operand has 217 places, 249 transitions, 3916 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:53:29,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 4570 flow [2024-06-28 00:53:29,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 271 transitions, 4353 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:29,355 INFO L231 Difference]: Finished difference. Result has 220 places, 251 transitions, 3918 flow [2024-06-28 00:53:29,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3918, PETRI_PLACES=220, PETRI_TRANSITIONS=251} [2024-06-28 00:53:29,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-28 00:53:29,355 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 251 transitions, 3918 flow [2024-06-28 00:53:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:29,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:29,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:29,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 00:53:29,356 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 00:53:29,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 823609154, now seen corresponding path program 2 times [2024-06-28 00:53:29,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757980700] [2024-06-28 00:53:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:29,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:30,116 INFO 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 00:53:30,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:30,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757980700] [2024-06-28 00:53:30,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757980700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:30,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:30,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:30,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836328815] [2024-06-28 00:53:30,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:30,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:30,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:30,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:30,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:30,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:30,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 251 transitions, 3918 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:30,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:30,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:30,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:30,768 INFO L124 PetriNetUnfolderBase]: 1061/1902 cut-off events. [2024-06-28 00:53:30,769 INFO L125 PetriNetUnfolderBase]: For 55195/55195 co-relation queries the response was YES. [2024-06-28 00:53:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13735 conditions, 1902 events. 1061/1902 cut-off events. For 55195/55195 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10320 event pairs, 218 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 13623. Up to 1559 conditions per place. [2024-06-28 00:53:30,786 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 192 selfloop transitions, 77 changer transitions 0/276 dead transitions. [2024-06-28 00:53:30,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 276 transitions, 4609 flow [2024-06-28 00:53:30,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:30,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:53:30,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 00:53:30,787 INFO L175 Difference]: Start difference. First operand has 220 places, 251 transitions, 3918 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:53:30,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 276 transitions, 4609 flow [2024-06-28 00:53:30,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 276 transitions, 4414 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:30,938 INFO L231 Difference]: Finished difference. Result has 222 places, 253 transitions, 3928 flow [2024-06-28 00:53:30,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3723, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3928, PETRI_PLACES=222, PETRI_TRANSITIONS=253} [2024-06-28 00:53:30,938 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-28 00:53:30,938 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 253 transitions, 3928 flow [2024-06-28 00:53:30,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:30,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:30,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:30,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 00:53:30,939 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 00:53:30,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash 830095904, now seen corresponding path program 3 times [2024-06-28 00:53:30,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:30,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908969192] [2024-06-28 00:53:30,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:30,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:31,755 INFO 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 00:53:31,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:31,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908969192] [2024-06-28 00:53:31,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908969192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:31,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:31,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130400702] [2024-06-28 00:53:31,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:31,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:31,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:31,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:31,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:31,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:31,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 253 transitions, 3928 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:31,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:31,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:31,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:32,436 INFO L124 PetriNetUnfolderBase]: 1087/1944 cut-off events. [2024-06-28 00:53:32,436 INFO L125 PetriNetUnfolderBase]: For 60098/60098 co-relation queries the response was YES. [2024-06-28 00:53:32,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14145 conditions, 1944 events. 1087/1944 cut-off events. For 60098/60098 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10566 event pairs, 209 based on Foata normal form. 2/1852 useless extension candidates. Maximal degree in co-relation 14032. Up to 1381 conditions per place. [2024-06-28 00:53:32,452 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 177 selfloop transitions, 94 changer transitions 0/278 dead transitions. [2024-06-28 00:53:32,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 278 transitions, 4754 flow [2024-06-28 00:53:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:32,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:53:32,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 00:53:32,453 INFO L175 Difference]: Start difference. First operand has 222 places, 253 transitions, 3928 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:53:32,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 278 transitions, 4754 flow [2024-06-28 00:53:32,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 278 transitions, 4569 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:32,628 INFO L231 Difference]: Finished difference. Result has 224 places, 257 transitions, 4032 flow [2024-06-28 00:53:32,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4032, PETRI_PLACES=224, PETRI_TRANSITIONS=257} [2024-06-28 00:53:32,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 00:53:32,629 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 257 transitions, 4032 flow [2024-06-28 00:53:32,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:32,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:32,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 00:53:32,629 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 00:53:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash 830104274, now seen corresponding path program 4 times [2024-06-28 00:53:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:32,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752112291] [2024-06-28 00:53:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:32,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:33,625 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 00:53:33,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:33,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752112291] [2024-06-28 00:53:33,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752112291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:33,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:33,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789191577] [2024-06-28 00:53:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:33,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:33,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:33,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:33,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:33,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 257 transitions, 4032 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:33,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:33,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:33,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:34,221 INFO L124 PetriNetUnfolderBase]: 1083/1937 cut-off events. [2024-06-28 00:53:34,221 INFO L125 PetriNetUnfolderBase]: For 58957/58957 co-relation queries the response was YES. [2024-06-28 00:53:34,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14094 conditions, 1937 events. 1083/1937 cut-off events. For 58957/58957 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10533 event pairs, 208 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 13980. Up to 1378 conditions per place. [2024-06-28 00:53:34,236 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 172 selfloop transitions, 98 changer transitions 0/277 dead transitions. [2024-06-28 00:53:34,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 277 transitions, 4660 flow [2024-06-28 00:53:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:53:34,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 00:53:34,237 INFO L175 Difference]: Start difference. First operand has 224 places, 257 transitions, 4032 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:53:34,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 277 transitions, 4660 flow [2024-06-28 00:53:34,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 277 transitions, 4465 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:34,431 INFO L231 Difference]: Finished difference. Result has 228 places, 257 transitions, 4039 flow [2024-06-28 00:53:34,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4039, PETRI_PLACES=228, PETRI_TRANSITIONS=257} [2024-06-28 00:53:34,432 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 00:53:34,432 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 257 transitions, 4039 flow [2024-06-28 00:53:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:34,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:34,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:34,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 00:53:34,433 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 00:53:34,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash 830104584, now seen corresponding path program 1 times [2024-06-28 00:53:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:34,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83087091] [2024-06-28 00:53:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:34,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:35,619 INFO 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 00:53:35,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:35,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83087091] [2024-06-28 00:53:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83087091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:35,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:35,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150321231] [2024-06-28 00:53:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:35,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:35,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:35,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 257 transitions, 4039 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 00:53:35,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:35,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:35,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:36,395 INFO L124 PetriNetUnfolderBase]: 1102/1964 cut-off events. [2024-06-28 00:53:36,395 INFO L125 PetriNetUnfolderBase]: For 61135/61135 co-relation queries the response was YES. [2024-06-28 00:53:36,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14398 conditions, 1964 events. 1102/1964 cut-off events. For 61135/61135 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10664 event pairs, 221 based on Foata normal form. 3/1870 useless extension candidates. Maximal degree in co-relation 14282. Up to 1580 conditions per place. [2024-06-28 00:53:36,412 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 196 selfloop transitions, 80 changer transitions 0/283 dead transitions. [2024-06-28 00:53:36,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 283 transitions, 4760 flow [2024-06-28 00:53:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:36,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:53:36,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:53:36,414 INFO L175 Difference]: Start difference. First operand has 228 places, 257 transitions, 4039 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:53:36,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 283 transitions, 4760 flow [2024-06-28 00:53:36,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 283 transitions, 4558 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:36,616 INFO L231 Difference]: Finished difference. Result has 230 places, 260 transitions, 4073 flow [2024-06-28 00:53:36,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3837, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4073, PETRI_PLACES=230, PETRI_TRANSITIONS=260} [2024-06-28 00:53:36,617 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 00:53:36,617 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 260 transitions, 4073 flow [2024-06-28 00:53:36,617 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 00:53:36,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:36,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:36,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 00:53:36,617 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 00:53:36,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:36,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1860751158, now seen corresponding path program 8 times [2024-06-28 00:53:36,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:36,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873470663] [2024-06-28 00:53:36,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:36,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:37,259 INFO 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 00:53:37,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:37,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873470663] [2024-06-28 00:53:37,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873470663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:37,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:37,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236950552] [2024-06-28 00:53:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:37,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:37,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:37,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:37,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 260 transitions, 4073 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:37,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:37,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:37,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:37,836 INFO L124 PetriNetUnfolderBase]: 1118/1989 cut-off events. [2024-06-28 00:53:37,836 INFO L125 PetriNetUnfolderBase]: For 61631/61633 co-relation queries the response was YES. [2024-06-28 00:53:37,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 1989 events. 1118/1989 cut-off events. For 61631/61633 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10806 event pairs, 226 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 14522. Up to 1550 conditions per place. [2024-06-28 00:53:37,851 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 192 selfloop transitions, 80 changer transitions 0/279 dead transitions. [2024-06-28 00:53:37,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 279 transitions, 4763 flow [2024-06-28 00:53:37,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 00:53:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 00:53:37,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 00:53:37,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 00:53:37,852 INFO L175 Difference]: Start difference. First operand has 230 places, 260 transitions, 4073 flow. Second operand 8 states and 124 transitions. [2024-06-28 00:53:37,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 279 transitions, 4763 flow [2024-06-28 00:53:38,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 279 transitions, 4559 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:38,073 INFO L231 Difference]: Finished difference. Result has 230 places, 262 transitions, 4110 flow [2024-06-28 00:53:38,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4110, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2024-06-28 00:53:38,074 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 00:53:38,074 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 4110 flow [2024-06-28 00:53:38,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:38,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:38,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:38,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 00:53:38,074 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 00:53:38,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:38,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1860758102, now seen corresponding path program 5 times [2024-06-28 00:53:38,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:38,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999617966] [2024-06-28 00:53:38,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:38,991 INFO 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 00:53:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999617966] [2024-06-28 00:53:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999617966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:38,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344189113] [2024-06-28 00:53:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:39,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:39,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 4110 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:39,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:39,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:39,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:39,639 INFO L124 PetriNetUnfolderBase]: 1129/2006 cut-off events. [2024-06-28 00:53:39,639 INFO L125 PetriNetUnfolderBase]: For 64455/64457 co-relation queries the response was YES. [2024-06-28 00:53:39,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14784 conditions, 2006 events. 1129/2006 cut-off events. For 64455/64457 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10889 event pairs, 226 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 14666. Up to 1559 conditions per place. [2024-06-28 00:53:39,697 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 193 selfloop transitions, 82 changer transitions 0/282 dead transitions. [2024-06-28 00:53:39,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 282 transitions, 4794 flow [2024-06-28 00:53:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:39,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 00:53:39,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 00:53:39,698 INFO L175 Difference]: Start difference. First operand has 230 places, 262 transitions, 4110 flow. Second operand 9 states and 135 transitions. [2024-06-28 00:53:39,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 282 transitions, 4794 flow [2024-06-28 00:53:39,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 282 transitions, 4569 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:39,902 INFO L231 Difference]: Finished difference. Result has 233 places, 264 transitions, 4110 flow [2024-06-28 00:53:39,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4110, PETRI_PLACES=233, PETRI_TRANSITIONS=264} [2024-06-28 00:53:39,917 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 00:53:39,917 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 264 transitions, 4110 flow [2024-06-28 00:53:39,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:39,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:39,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:39,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 00:53:39,918 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 00:53:39,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:39,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1795551092, now seen corresponding path program 2 times [2024-06-28 00:53:39,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:39,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373003244] [2024-06-28 00:53:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:39,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:41,217 INFO 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 00:53:41,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:41,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373003244] [2024-06-28 00:53:41,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373003244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:41,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:41,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:41,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360352549] [2024-06-28 00:53:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:41,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:41,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:41,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 264 transitions, 4110 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 00:53:41,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:41,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:41,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:41,809 INFO L124 PetriNetUnfolderBase]: 1135/2012 cut-off events. [2024-06-28 00:53:41,810 INFO L125 PetriNetUnfolderBase]: For 62976/62979 co-relation queries the response was YES. [2024-06-28 00:53:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14747 conditions, 2012 events. 1135/2012 cut-off events. For 62976/62979 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10892 event pairs, 243 based on Foata normal form. 1/1910 useless extension candidates. Maximal degree in co-relation 14628. Up to 1713 conditions per place. [2024-06-28 00:53:41,826 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 206 selfloop transitions, 71 changer transitions 0/284 dead transitions. [2024-06-28 00:53:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 284 transitions, 4776 flow [2024-06-28 00:53:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:41,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:41,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 00:53:41,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-28 00:53:41,828 INFO L175 Difference]: Start difference. First operand has 233 places, 264 transitions, 4110 flow. Second operand 10 states and 144 transitions. [2024-06-28 00:53:41,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 284 transitions, 4776 flow [2024-06-28 00:53:42,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 284 transitions, 4571 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:42,058 INFO L231 Difference]: Finished difference. Result has 236 places, 266 transitions, 4094 flow [2024-06-28 00:53:42,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4094, PETRI_PLACES=236, PETRI_TRANSITIONS=266} [2024-06-28 00:53:42,060 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-28 00:53:42,060 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 266 transitions, 4094 flow [2024-06-28 00:53:42,061 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 00:53:42,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:42,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 00:53:42,061 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 00:53:42,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:42,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1381631452, now seen corresponding path program 6 times [2024-06-28 00:53:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440044854] [2024-06-28 00:53:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:42,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:43,031 INFO 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 00:53:43,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:43,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440044854] [2024-06-28 00:53:43,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440044854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:43,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:43,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413418286] [2024-06-28 00:53:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:43,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:43,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 266 transitions, 4094 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:43,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:43,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:43,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:43,804 INFO L124 PetriNetUnfolderBase]: 1161/2055 cut-off events. [2024-06-28 00:53:43,805 INFO L125 PetriNetUnfolderBase]: For 70427/70429 co-relation queries the response was YES. [2024-06-28 00:53:43,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15151 conditions, 2055 events. 1161/2055 cut-off events. For 70427/70429 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11184 event pairs, 227 based on Foata normal form. 2/1952 useless extension candidates. Maximal degree in co-relation 15031. Up to 1562 conditions per place. [2024-06-28 00:53:43,823 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 194 selfloop transitions, 89 changer transitions 0/290 dead transitions. [2024-06-28 00:53:43,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 290 transitions, 4980 flow [2024-06-28 00:53:43,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:53:43,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 00:53:43,824 INFO L175 Difference]: Start difference. First operand has 236 places, 266 transitions, 4094 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:53:43,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 290 transitions, 4980 flow [2024-06-28 00:53:44,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 290 transitions, 4811 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:44,069 INFO L231 Difference]: Finished difference. Result has 237 places, 270 transitions, 4224 flow [2024-06-28 00:53:44,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3925, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4224, PETRI_PLACES=237, PETRI_TRANSITIONS=270} [2024-06-28 00:53:44,070 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 00:53:44,070 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 270 transitions, 4224 flow [2024-06-28 00:53:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:44,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:44,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:44,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 00:53:44,071 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 00:53:44,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:44,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1860997422, now seen corresponding path program 3 times [2024-06-28 00:53:44,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:44,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100337244] [2024-06-28 00:53:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:44,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:45,104 INFO 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 00:53:45,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:45,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100337244] [2024-06-28 00:53:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100337244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:45,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028730696] [2024-06-28 00:53:45,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:45,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:45,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 270 transitions, 4224 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 00:53:45,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:45,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:45,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:45,787 INFO L124 PetriNetUnfolderBase]: 1159/2049 cut-off events. [2024-06-28 00:53:45,787 INFO L125 PetriNetUnfolderBase]: For 68919/68922 co-relation queries the response was YES. [2024-06-28 00:53:45,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15206 conditions, 2049 events. 1159/2049 cut-off events. For 68919/68922 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11096 event pairs, 238 based on Foata normal form. 1/1945 useless extension candidates. Maximal degree in co-relation 15085. Up to 1689 conditions per place. [2024-06-28 00:53:45,805 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 196 selfloop transitions, 86 changer transitions 0/289 dead transitions. [2024-06-28 00:53:45,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 289 transitions, 4901 flow [2024-06-28 00:53:45,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:45,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:53:45,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084084084084084 [2024-06-28 00:53:45,806 INFO L175 Difference]: Start difference. First operand has 237 places, 270 transitions, 4224 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:53:45,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 289 transitions, 4901 flow [2024-06-28 00:53:46,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 289 transitions, 4729 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 00:53:46,061 INFO L231 Difference]: Finished difference. Result has 241 places, 272 transitions, 4276 flow [2024-06-28 00:53:46,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4276, PETRI_PLACES=241, PETRI_TRANSITIONS=272} [2024-06-28 00:53:46,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 00:53:46,062 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 272 transitions, 4276 flow [2024-06-28 00:53:46,062 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 00:53:46,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:46,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:46,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 00:53:46,063 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 00:53:46,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:46,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1086403882, now seen corresponding path program 7 times [2024-06-28 00:53:46,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:46,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901090899] [2024-06-28 00:53:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:46,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:46,825 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 00:53:46,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:46,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901090899] [2024-06-28 00:53:46,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901090899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:46,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:46,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:46,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736410894] [2024-06-28 00:53:46,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:46,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:46,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:46,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:46,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:46,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:46,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 272 transitions, 4276 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:46,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:46,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:46,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:47,493 INFO L124 PetriNetUnfolderBase]: 1200/2115 cut-off events. [2024-06-28 00:53:47,493 INFO L125 PetriNetUnfolderBase]: For 79688/79688 co-relation queries the response was YES. [2024-06-28 00:53:47,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16011 conditions, 2115 events. 1200/2115 cut-off events. For 79688/79688 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11513 event pairs, 294 based on Foata normal form. 4/2012 useless extension candidates. Maximal degree in co-relation 15888. Up to 1911 conditions per place. [2024-06-28 00:53:47,508 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 266 selfloop transitions, 23 changer transitions 0/296 dead transitions. [2024-06-28 00:53:47,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 296 transitions, 5170 flow [2024-06-28 00:53:47,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 00:53:47,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-28 00:53:47,510 INFO L175 Difference]: Start difference. First operand has 241 places, 272 transitions, 4276 flow. Second operand 10 states and 145 transitions. [2024-06-28 00:53:47,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 296 transitions, 5170 flow [2024-06-28 00:53:47,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 296 transitions, 4970 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 00:53:47,732 INFO L231 Difference]: Finished difference. Result has 244 places, 277 transitions, 4262 flow [2024-06-28 00:53:47,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4076, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4262, PETRI_PLACES=244, PETRI_TRANSITIONS=277} [2024-06-28 00:53:47,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 00:53:47,733 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 277 transitions, 4262 flow [2024-06-28 00:53:47,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:47,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:47,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:47,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 00:53:47,734 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 00:53:47,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:47,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1860997112, now seen corresponding path program 8 times [2024-06-28 00:53:47,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:47,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814600578] [2024-06-28 00:53:47,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:47,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:53:48,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:48,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814600578] [2024-06-28 00:53:48,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814600578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:48,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:48,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172738712] [2024-06-28 00:53:48,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:48,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:48,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:48,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:48,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:48,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:48,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 277 transitions, 4262 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:48,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:48,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:48,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:49,317 INFO L124 PetriNetUnfolderBase]: 1196/2106 cut-off events. [2024-06-28 00:53:49,317 INFO L125 PetriNetUnfolderBase]: For 74270/74272 co-relation queries the response was YES. [2024-06-28 00:53:49,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15728 conditions, 2106 events. 1196/2106 cut-off events. For 74270/74272 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11454 event pairs, 228 based on Foata normal form. 2/1997 useless extension candidates. Maximal degree in co-relation 15604. Up to 1617 conditions per place. [2024-06-28 00:53:49,333 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 199 selfloop transitions, 90 changer transitions 0/296 dead transitions. [2024-06-28 00:53:49,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 296 transitions, 4932 flow [2024-06-28 00:53:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:49,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:53:49,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 00:53:49,352 INFO L175 Difference]: Start difference. First operand has 244 places, 277 transitions, 4262 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:53:49,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 296 transitions, 4932 flow [2024-06-28 00:53:49,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 296 transitions, 4803 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:49,629 INFO L231 Difference]: Finished difference. Result has 247 places, 277 transitions, 4318 flow [2024-06-28 00:53:49,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4318, PETRI_PLACES=247, PETRI_TRANSITIONS=277} [2024-06-28 00:53:49,629 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-28 00:53:49,629 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 277 transitions, 4318 flow [2024-06-28 00:53:49,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:49,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:49,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:49,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 00:53:49,630 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 00:53:49,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:49,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2138750674, now seen corresponding path program 4 times [2024-06-28 00:53:49,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:49,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276948654] [2024-06-28 00:53:49,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:49,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:51,146 INFO 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 00:53:51,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:51,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276948654] [2024-06-28 00:53:51,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276948654] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:51,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:51,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:51,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013535411] [2024-06-28 00:53:51,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:51,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:51,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:51,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:51,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:51,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 277 transitions, 4318 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 00:53:51,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:51,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:51,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:52,308 INFO L124 PetriNetUnfolderBase]: 1194/2105 cut-off events. [2024-06-28 00:53:52,308 INFO L125 PetriNetUnfolderBase]: For 70997/70997 co-relation queries the response was YES. [2024-06-28 00:53:52,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15646 conditions, 2105 events. 1194/2105 cut-off events. For 70997/70997 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 11454 event pairs, 295 based on Foata normal form. 1/1999 useless extension candidates. Maximal degree in co-relation 15520. Up to 1943 conditions per place. [2024-06-28 00:53:52,327 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 20 changer transitions 0/295 dead transitions. [2024-06-28 00:53:52,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 295 transitions, 4948 flow [2024-06-28 00:53:52,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:53:52,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:53:52,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-28 00:53:52,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36855036855036855 [2024-06-28 00:53:52,328 INFO L175 Difference]: Start difference. First operand has 247 places, 277 transitions, 4318 flow. Second operand 11 states and 150 transitions. [2024-06-28 00:53:52,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 295 transitions, 4948 flow [2024-06-28 00:53:52,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 295 transitions, 4753 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:52,600 INFO L231 Difference]: Finished difference. Result has 250 places, 277 transitions, 4168 flow [2024-06-28 00:53:52,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4123, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4168, PETRI_PLACES=250, PETRI_TRANSITIONS=277} [2024-06-28 00:53:52,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 00:53:52,601 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 277 transitions, 4168 flow [2024-06-28 00:53:52,601 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 00:53:52,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:52,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:52,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 00:53:52,601 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 00:53:52,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:52,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1096523212, now seen corresponding path program 9 times [2024-06-28 00:53:52,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:52,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908657270] [2024-06-28 00:53:52,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:52,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:53,429 INFO 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 00:53:53,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908657270] [2024-06-28 00:53:53,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908657270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:53,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:53,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:53,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539888100] [2024-06-28 00:53:53,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:53,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:53,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:53,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:53,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:53,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 277 transitions, 4168 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:53,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:53,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:53,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:54,173 INFO L124 PetriNetUnfolderBase]: 1213/2133 cut-off events. [2024-06-28 00:53:54,174 INFO L125 PetriNetUnfolderBase]: For 77148/77150 co-relation queries the response was YES. [2024-06-28 00:53:54,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15819 conditions, 2133 events. 1213/2133 cut-off events. For 77148/77150 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11633 event pairs, 228 based on Foata normal form. 2/2021 useless extension candidates. Maximal degree in co-relation 15692. Up to 1201 conditions per place. [2024-06-28 00:53:54,189 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 174 selfloop transitions, 122 changer transitions 0/303 dead transitions. [2024-06-28 00:53:54,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 303 transitions, 5258 flow [2024-06-28 00:53:54,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:54,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:54,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:53:54,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 00:53:54,191 INFO L175 Difference]: Start difference. First operand has 250 places, 277 transitions, 4168 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:53:54,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 303 transitions, 5258 flow [2024-06-28 00:53:54,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 303 transitions, 5218 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 00:53:54,462 INFO L231 Difference]: Finished difference. Result has 250 places, 281 transitions, 4515 flow [2024-06-28 00:53:54,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4128, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4515, PETRI_PLACES=250, PETRI_TRANSITIONS=281} [2024-06-28 00:53:54,463 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 00:53:54,463 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 281 transitions, 4515 flow [2024-06-28 00:53:54,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:54,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:54,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:54,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 00:53:54,464 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 00:53:54,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:54,464 INFO L85 PathProgramCache]: Analyzing trace with hash 2146097292, now seen corresponding path program 5 times [2024-06-28 00:53:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180405901] [2024-06-28 00:53:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:54,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:55,338 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 00:53:55,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:55,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180405901] [2024-06-28 00:53:55,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180405901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:55,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:55,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:53:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83640718] [2024-06-28 00:53:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:55,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:53:55,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:55,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:53:55,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:53:55,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:55,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 281 transitions, 4515 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 00:53:55,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:55,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:55,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:56,078 INFO L124 PetriNetUnfolderBase]: 1228/2152 cut-off events. [2024-06-28 00:53:56,078 INFO L125 PetriNetUnfolderBase]: For 81669/81672 co-relation queries the response was YES. [2024-06-28 00:53:56,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16713 conditions, 2152 events. 1228/2152 cut-off events. For 81669/81672 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11691 event pairs, 245 based on Foata normal form. 1/2036 useless extension candidates. Maximal degree in co-relation 16584. Up to 1644 conditions per place. [2024-06-28 00:53:56,099 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 185 selfloop transitions, 113 changer transitions 0/305 dead transitions. [2024-06-28 00:53:56,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 305 transitions, 5416 flow [2024-06-28 00:53:56,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:53:56,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:53:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:53:56,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 00:53:56,101 INFO L175 Difference]: Start difference. First operand has 250 places, 281 transitions, 4515 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:53:56,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 305 transitions, 5416 flow [2024-06-28 00:53:56,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 305 transitions, 5077 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-28 00:53:56,437 INFO L231 Difference]: Finished difference. Result has 255 places, 283 transitions, 4505 flow [2024-06-28 00:53:56,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4182, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4505, PETRI_PLACES=255, PETRI_TRANSITIONS=283} [2024-06-28 00:53:56,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 00:53:56,437 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 283 transitions, 4505 flow [2024-06-28 00:53:56,438 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 00:53:56,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:56,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:56,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 00:53:56,438 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 00:53:56,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:56,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1096531582, now seen corresponding path program 10 times [2024-06-28 00:53:56,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:56,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324814505] [2024-06-28 00:53:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:57,164 INFO 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 00:53:57,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:57,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324814505] [2024-06-28 00:53:57,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324814505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:57,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:57,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:57,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377612760] [2024-06-28 00:53:57,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:57,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:57,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:57,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:57,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:57,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:57,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 283 transitions, 4505 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:57,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:57,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:57,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:57,835 INFO L124 PetriNetUnfolderBase]: 1224/2149 cut-off events. [2024-06-28 00:53:57,836 INFO L125 PetriNetUnfolderBase]: For 78293/78295 co-relation queries the response was YES. [2024-06-28 00:53:57,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16458 conditions, 2149 events. 1224/2149 cut-off events. For 78293/78295 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11699 event pairs, 230 based on Foata normal form. 2/2034 useless extension candidates. Maximal degree in co-relation 16328. Up to 1214 conditions per place. [2024-06-28 00:53:57,855 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 173 selfloop transitions, 123 changer transitions 0/303 dead transitions. [2024-06-28 00:53:57,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 303 transitions, 5339 flow [2024-06-28 00:53:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:57,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:53:57,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:53:57,856 INFO L175 Difference]: Start difference. First operand has 255 places, 283 transitions, 4505 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:53:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 303 transitions, 5339 flow [2024-06-28 00:53:58,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 303 transitions, 5098 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 00:53:58,155 INFO L231 Difference]: Finished difference. Result has 255 places, 283 transitions, 4515 flow [2024-06-28 00:53:58,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4515, PETRI_PLACES=255, PETRI_TRANSITIONS=283} [2024-06-28 00:53:58,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 00:53:58,156 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 283 transitions, 4515 flow [2024-06-28 00:53:58,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:58,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:58,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:53:58,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 00:53:58,156 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 00:53:58,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:58,157 INFO L85 PathProgramCache]: Analyzing trace with hash -406946188, now seen corresponding path program 9 times [2024-06-28 00:53:58,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:58,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982421117] [2024-06-28 00:53:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:53:58,828 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 00:53:58,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:53:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982421117] [2024-06-28 00:53:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982421117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:53:58,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:53:58,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:53:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219549230] [2024-06-28 00:53:58,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:53:58,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:53:58,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:53:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:53:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:53:58,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:53:58,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 283 transitions, 4515 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:58,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:53:58,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:53:58,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:53:59,518 INFO L124 PetriNetUnfolderBase]: 1250/2198 cut-off events. [2024-06-28 00:53:59,518 INFO L125 PetriNetUnfolderBase]: For 77451/77451 co-relation queries the response was YES. [2024-06-28 00:53:59,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16764 conditions, 2198 events. 1250/2198 cut-off events. For 77451/77451 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 12078 event pairs, 246 based on Foata normal form. 2/2087 useless extension candidates. Maximal degree in co-relation 16634. Up to 1831 conditions per place. [2024-06-28 00:53:59,537 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 231 selfloop transitions, 77 changer transitions 0/315 dead transitions. [2024-06-28 00:53:59,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 315 transitions, 5438 flow [2024-06-28 00:53:59,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:53:59,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:53:59,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:53:59,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 00:53:59,539 INFO L175 Difference]: Start difference. First operand has 255 places, 283 transitions, 4515 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:53:59,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 315 transitions, 5438 flow [2024-06-28 00:53:59,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 315 transitions, 5179 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 00:53:59,828 INFO L231 Difference]: Finished difference. Result has 257 places, 294 transitions, 4682 flow [2024-06-28 00:53:59,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4264, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4682, PETRI_PLACES=257, PETRI_TRANSITIONS=294} [2024-06-28 00:53:59,829 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 00:53:59,829 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 294 transitions, 4682 flow [2024-06-28 00:53:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 00:53:59,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:53:59,829 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 00:53:59,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 00:53:59,830 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 00:53:59,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:53:59,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2114843294, now seen corresponding path program 1 times [2024-06-28 00:53:59,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:53:59,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447009632] [2024-06-28 00:53:59,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:53:59,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:53:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:00,646 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 00:54:00,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:00,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447009632] [2024-06-28 00:54:00,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447009632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:00,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:00,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:00,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012519985] [2024-06-28 00:54:00,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:00,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:00,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:00,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:00,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 294 transitions, 4682 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 00:54:00,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:00,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:00,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:01,299 INFO L124 PetriNetUnfolderBase]: 1274/2248 cut-off events. [2024-06-28 00:54:01,300 INFO L125 PetriNetUnfolderBase]: For 80155/80155 co-relation queries the response was YES. [2024-06-28 00:54:01,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17089 conditions, 2248 events. 1274/2248 cut-off events. For 80155/80155 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12440 event pairs, 138 based on Foata normal form. 2/2140 useless extension candidates. Maximal degree in co-relation 16957. Up to 1698 conditions per place. [2024-06-28 00:54:01,321 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 259 selfloop transitions, 59 changer transitions 0/325 dead transitions. [2024-06-28 00:54:01,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 325 transitions, 5528 flow [2024-06-28 00:54:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:01,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:01,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 00:54:01,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-28 00:54:01,322 INFO L175 Difference]: Start difference. First operand has 257 places, 294 transitions, 4682 flow. Second operand 9 states and 145 transitions. [2024-06-28 00:54:01,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 325 transitions, 5528 flow [2024-06-28 00:54:01,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 325 transitions, 5344 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:01,649 INFO L231 Difference]: Finished difference. Result has 261 places, 297 transitions, 4738 flow [2024-06-28 00:54:01,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4738, PETRI_PLACES=261, PETRI_TRANSITIONS=297} [2024-06-28 00:54:01,649 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 00:54:01,650 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 297 transitions, 4738 flow [2024-06-28 00:54:01,650 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 00:54:01,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:01,650 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 00:54:01,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 00:54:01,650 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 00:54:01,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2056750844, now seen corresponding path program 2 times [2024-06-28 00:54:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:01,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147878550] [2024-06-28 00:54:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:02,436 INFO 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 00:54:02,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:02,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147878550] [2024-06-28 00:54:02,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147878550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:02,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:02,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:02,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224802054] [2024-06-28 00:54:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:02,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 297 transitions, 4738 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 00:54:02,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:02,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:02,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:03,189 INFO L124 PetriNetUnfolderBase]: 1298/2297 cut-off events. [2024-06-28 00:54:03,189 INFO L125 PetriNetUnfolderBase]: For 83725/83725 co-relation queries the response was YES. [2024-06-28 00:54:03,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 2297 events. 1298/2297 cut-off events. For 83725/83725 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12826 event pairs, 246 based on Foata normal form. 2/2181 useless extension candidates. Maximal degree in co-relation 17341. Up to 1876 conditions per place. [2024-06-28 00:54:03,212 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 253 selfloop transitions, 68 changer transitions 0/328 dead transitions. [2024-06-28 00:54:03,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 328 transitions, 5609 flow [2024-06-28 00:54:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:03,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:54:03,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:54:03,213 INFO L175 Difference]: Start difference. First operand has 261 places, 297 transitions, 4738 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:54:03,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 328 transitions, 5609 flow [2024-06-28 00:54:03,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 328 transitions, 5401 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:03,580 INFO L231 Difference]: Finished difference. Result has 265 places, 300 transitions, 4795 flow [2024-06-28 00:54:03,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4530, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4795, PETRI_PLACES=265, PETRI_TRANSITIONS=300} [2024-06-28 00:54:03,581 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 224 predicate places. [2024-06-28 00:54:03,581 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 300 transitions, 4795 flow [2024-06-28 00:54:03,581 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 00:54:03,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:03,581 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 00:54:03,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 00:54:03,582 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 00:54:03,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2056606694, now seen corresponding path program 3 times [2024-06-28 00:54:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61331738] [2024-06-28 00:54:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:04,371 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 00:54:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:04,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61331738] [2024-06-28 00:54:04,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61331738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:04,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:04,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:04,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066687494] [2024-06-28 00:54:04,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:04,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:04,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:04,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:04,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:04,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:04,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 300 transitions, 4795 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 00:54:04,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:04,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:04,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:05,189 INFO L124 PetriNetUnfolderBase]: 1322/2348 cut-off events. [2024-06-28 00:54:05,189 INFO L125 PetriNetUnfolderBase]: For 88026/88026 co-relation queries the response was YES. [2024-06-28 00:54:05,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17741 conditions, 2348 events. 1322/2348 cut-off events. For 88026/88026 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13221 event pairs, 260 based on Foata normal form. 2/2232 useless extension candidates. Maximal degree in co-relation 17605. Up to 1798 conditions per place. [2024-06-28 00:54:05,214 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 236 selfloop transitions, 87 changer transitions 0/330 dead transitions. [2024-06-28 00:54:05,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 330 transitions, 5678 flow [2024-06-28 00:54:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:05,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:05,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 00:54:05,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:54:05,216 INFO L175 Difference]: Start difference. First operand has 265 places, 300 transitions, 4795 flow. Second operand 9 states and 144 transitions. [2024-06-28 00:54:05,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 330 transitions, 5678 flow [2024-06-28 00:54:05,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 330 transitions, 5447 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:05,640 INFO L231 Difference]: Finished difference. Result has 269 places, 303 transitions, 4887 flow [2024-06-28 00:54:05,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4564, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4887, PETRI_PLACES=269, PETRI_TRANSITIONS=303} [2024-06-28 00:54:05,641 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-28 00:54:05,641 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 303 transitions, 4887 flow [2024-06-28 00:54:05,641 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 00:54:05,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:05,641 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 00:54:05,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 00:54:05,642 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 00:54:05,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:05,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2056600897, now seen corresponding path program 1 times [2024-06-28 00:54:05,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:05,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867861641] [2024-06-28 00:54:05,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:05,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:06,655 INFO 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 00:54:06,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867861641] [2024-06-28 00:54:06,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867861641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:06,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:06,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:06,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494283696] [2024-06-28 00:54:06,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:06,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:06,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:06,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:06,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:06,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:06,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 303 transitions, 4887 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 00:54:06,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:06,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:06,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:07,573 INFO L124 PetriNetUnfolderBase]: 1320/2345 cut-off events. [2024-06-28 00:54:07,573 INFO L125 PetriNetUnfolderBase]: For 84519/84519 co-relation queries the response was YES. [2024-06-28 00:54:07,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17598 conditions, 2345 events. 1320/2345 cut-off events. For 84519/84519 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13179 event pairs, 273 based on Foata normal form. 1/2222 useless extension candidates. Maximal degree in co-relation 17460. Up to 1926 conditions per place. [2024-06-28 00:54:07,597 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 88 changer transitions 0/326 dead transitions. [2024-06-28 00:54:07,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 326 transitions, 5692 flow [2024-06-28 00:54:07,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:07,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:07,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:54:07,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 00:54:07,598 INFO L175 Difference]: Start difference. First operand has 269 places, 303 transitions, 4887 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:54:07,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 326 transitions, 5692 flow [2024-06-28 00:54:07,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 326 transitions, 5435 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:08,002 INFO L231 Difference]: Finished difference. Result has 272 places, 305 transitions, 4887 flow [2024-06-28 00:54:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4887, PETRI_PLACES=272, PETRI_TRANSITIONS=305} [2024-06-28 00:54:08,003 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 231 predicate places. [2024-06-28 00:54:08,003 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 305 transitions, 4887 flow [2024-06-28 00:54:08,003 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 00:54:08,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:08,003 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 00:54:08,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 00:54:08,004 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 00:54:08,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:08,004 INFO L85 PathProgramCache]: Analyzing trace with hash -291173172, now seen corresponding path program 4 times [2024-06-28 00:54:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:08,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478914039] [2024-06-28 00:54:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:08,878 INFO 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 00:54:08,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:08,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478914039] [2024-06-28 00:54:08,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478914039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:08,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:08,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:08,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911246578] [2024-06-28 00:54:08,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:08,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:08,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:08,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:08,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:08,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:08,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 305 transitions, 4887 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 00:54:08,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:08,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:09,707 INFO L124 PetriNetUnfolderBase]: 1336/2373 cut-off events. [2024-06-28 00:54:09,707 INFO L125 PetriNetUnfolderBase]: For 87871/87871 co-relation queries the response was YES. [2024-06-28 00:54:09,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 2373 events. 1336/2373 cut-off events. For 87871/87871 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 13399 event pairs, 281 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 17558. Up to 1955 conditions per place. [2024-06-28 00:54:09,729 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 85 changer transitions 0/330 dead transitions. [2024-06-28 00:54:09,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 330 transitions, 5728 flow [2024-06-28 00:54:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:09,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:09,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:54:09,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 00:54:09,731 INFO L175 Difference]: Start difference. First operand has 272 places, 305 transitions, 4887 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:54:09,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 330 transitions, 5728 flow [2024-06-28 00:54:10,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 330 transitions, 5505 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:10,126 INFO L231 Difference]: Finished difference. Result has 274 places, 307 transitions, 4932 flow [2024-06-28 00:54:10,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4664, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4932, PETRI_PLACES=274, PETRI_TRANSITIONS=307} [2024-06-28 00:54:10,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 233 predicate places. [2024-06-28 00:54:10,126 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 307 transitions, 4932 flow [2024-06-28 00:54:10,127 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 00:54:10,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:10,127 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 00:54:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 00:54:10,127 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 00:54:10,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash 264322530, now seen corresponding path program 5 times [2024-06-28 00:54:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597121232] [2024-06-28 00:54:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:11,002 INFO 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 00:54:11,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597121232] [2024-06-28 00:54:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597121232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:11,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226033364] [2024-06-28 00:54:11,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:11,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:11,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:11,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:11,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:11,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:11,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 307 transitions, 4932 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 00:54:11,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:11,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:11,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:11,900 INFO L124 PetriNetUnfolderBase]: 1360/2428 cut-off events. [2024-06-28 00:54:11,900 INFO L125 PetriNetUnfolderBase]: For 92367/92367 co-relation queries the response was YES. [2024-06-28 00:54:11,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18139 conditions, 2428 events. 1360/2428 cut-off events. For 92367/92367 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13890 event pairs, 184 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 17999. Up to 1944 conditions per place. [2024-06-28 00:54:11,926 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 262 selfloop transitions, 72 changer transitions 0/341 dead transitions. [2024-06-28 00:54:11,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 341 transitions, 5868 flow [2024-06-28 00:54:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 00:54:11,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 00:54:11,928 INFO L175 Difference]: Start difference. First operand has 274 places, 307 transitions, 4932 flow. Second operand 9 states and 148 transitions. [2024-06-28 00:54:11,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 341 transitions, 5868 flow [2024-06-28 00:54:12,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 341 transitions, 5612 flow, removed 43 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:12,361 INFO L231 Difference]: Finished difference. Result has 276 places, 310 transitions, 4964 flow [2024-06-28 00:54:12,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4964, PETRI_PLACES=276, PETRI_TRANSITIONS=310} [2024-06-28 00:54:12,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 00:54:12,362 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 310 transitions, 4964 flow [2024-06-28 00:54:12,362 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 00:54:12,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:12,362 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 00:54:12,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 00:54:12,362 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 00:54:12,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:12,363 INFO L85 PathProgramCache]: Analyzing trace with hash -243495910, now seen corresponding path program 6 times [2024-06-28 00:54:12,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:12,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154433494] [2024-06-28 00:54:12,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:12,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:13,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:13,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:13,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154433494] [2024-06-28 00:54:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154433494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:13,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:13,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:13,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183611596] [2024-06-28 00:54:13,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:13,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:13,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:13,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:13,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:13,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 310 transitions, 4964 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 00:54:13,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:13,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:13,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:13,810 INFO L124 PetriNetUnfolderBase]: 1384/2479 cut-off events. [2024-06-28 00:54:13,810 INFO L125 PetriNetUnfolderBase]: For 96775/96775 co-relation queries the response was YES. [2024-06-28 00:54:13,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18499 conditions, 2479 events. 1384/2479 cut-off events. For 96775/96775 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14260 event pairs, 299 based on Foata normal form. 2/2354 useless extension candidates. Maximal degree in co-relation 18358. Up to 2047 conditions per place. [2024-06-28 00:54:13,834 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 255 selfloop transitions, 81 changer transitions 0/343 dead transitions. [2024-06-28 00:54:13,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 343 transitions, 5912 flow [2024-06-28 00:54:13,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:13,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 00:54:13,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 00:54:13,836 INFO L175 Difference]: Start difference. First operand has 276 places, 310 transitions, 4964 flow. Second operand 9 states and 146 transitions. [2024-06-28 00:54:13,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 343 transitions, 5912 flow [2024-06-28 00:54:14,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 343 transitions, 5656 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:14,236 INFO L231 Difference]: Finished difference. Result has 280 places, 313 transitions, 5025 flow [2024-06-28 00:54:14,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4708, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5025, PETRI_PLACES=280, PETRI_TRANSITIONS=313} [2024-06-28 00:54:14,236 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 00:54:14,237 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 313 transitions, 5025 flow [2024-06-28 00:54:14,237 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 00:54:14,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:14,237 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 00:54:14,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 00:54:14,237 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 00:54:14,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:14,237 INFO L85 PathProgramCache]: Analyzing trace with hash -243490113, now seen corresponding path program 2 times [2024-06-28 00:54:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551771903] [2024-06-28 00:54:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:15,259 INFO 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 00:54:15,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:15,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551771903] [2024-06-28 00:54:15,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551771903] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:15,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:15,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:15,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141648190] [2024-06-28 00:54:15,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:15,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:15,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:15,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 313 transitions, 5025 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 00:54:15,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:15,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:15,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:16,116 INFO L124 PetriNetUnfolderBase]: 1382/2476 cut-off events. [2024-06-28 00:54:16,116 INFO L125 PetriNetUnfolderBase]: For 91088/91088 co-relation queries the response was YES. [2024-06-28 00:54:16,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18148 conditions, 2476 events. 1382/2476 cut-off events. For 91088/91088 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14235 event pairs, 309 based on Foata normal form. 1/2349 useless extension candidates. Maximal degree in co-relation 18005. Up to 2070 conditions per place. [2024-06-28 00:54:16,140 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 247 selfloop transitions, 85 changer transitions 0/339 dead transitions. [2024-06-28 00:54:16,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 339 transitions, 5879 flow [2024-06-28 00:54:16,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:16,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:16,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:54:16,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 00:54:16,141 INFO L175 Difference]: Start difference. First operand has 280 places, 313 transitions, 5025 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:54:16,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 339 transitions, 5879 flow [2024-06-28 00:54:16,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 339 transitions, 5604 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:16,576 INFO L231 Difference]: Finished difference. Result has 283 places, 315 transitions, 5000 flow [2024-06-28 00:54:16,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4750, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5000, PETRI_PLACES=283, PETRI_TRANSITIONS=315} [2024-06-28 00:54:16,576 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 242 predicate places. [2024-06-28 00:54:16,577 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 315 transitions, 5000 flow [2024-06-28 00:54:16,577 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 00:54:16,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:16,577 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 00:54:16,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 00:54:16,577 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 00:54:16,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:16,578 INFO L85 PathProgramCache]: Analyzing trace with hash -243490330, now seen corresponding path program 7 times [2024-06-28 00:54:16,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:16,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434987721] [2024-06-28 00:54:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:16,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:17,326 INFO 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 00:54:17,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:17,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434987721] [2024-06-28 00:54:17,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434987721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:17,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:17,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:17,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701914330] [2024-06-28 00:54:17,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:17,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:17,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:17,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:17,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 315 transitions, 5000 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 00:54:17,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:17,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:17,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:18,049 INFO L124 PetriNetUnfolderBase]: 1398/2505 cut-off events. [2024-06-28 00:54:18,049 INFO L125 PetriNetUnfolderBase]: For 94429/94429 co-relation queries the response was YES. [2024-06-28 00:54:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18198 conditions, 2505 events. 1398/2505 cut-off events. For 94429/94429 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14459 event pairs, 311 based on Foata normal form. 2/2379 useless extension candidates. Maximal degree in co-relation 18054. Up to 2094 conditions per place. [2024-06-28 00:54:18,075 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 253 selfloop transitions, 83 changer transitions 0/343 dead transitions. [2024-06-28 00:54:18,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 343 transitions, 5902 flow [2024-06-28 00:54:18,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:18,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 00:54:18,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264264264264264 [2024-06-28 00:54:18,076 INFO L175 Difference]: Start difference. First operand has 283 places, 315 transitions, 5000 flow. Second operand 9 states and 142 transitions. [2024-06-28 00:54:18,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 343 transitions, 5902 flow [2024-06-28 00:54:18,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 343 transitions, 5686 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:18,547 INFO L231 Difference]: Finished difference. Result has 285 places, 317 transitions, 5060 flow [2024-06-28 00:54:18,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5060, PETRI_PLACES=285, PETRI_TRANSITIONS=317} [2024-06-28 00:54:18,547 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-28 00:54:18,548 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 317 transitions, 5060 flow [2024-06-28 00:54:18,548 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 00:54:18,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:18,548 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 00:54:18,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 00:54:18,548 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 00:54:18,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:18,549 INFO L85 PathProgramCache]: Analyzing trace with hash -237918204, now seen corresponding path program 1 times [2024-06-28 00:54:18,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:18,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125090000] [2024-06-28 00:54:18,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:18,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:19,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125090000] [2024-06-28 00:54:19,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125090000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:19,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698337734] [2024-06-28 00:54:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:19,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:19,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:19,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:19,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:19,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 317 transitions, 5060 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 00:54:19,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:19,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:19,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:20,532 INFO L124 PetriNetUnfolderBase]: 1411/2523 cut-off events. [2024-06-28 00:54:20,533 INFO L125 PetriNetUnfolderBase]: For 98381/98381 co-relation queries the response was YES. [2024-06-28 00:54:20,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18384 conditions, 2523 events. 1411/2523 cut-off events. For 98381/98381 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14543 event pairs, 310 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 18239. Up to 2131 conditions per place. [2024-06-28 00:54:20,558 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 259 selfloop transitions, 79 changer transitions 0/345 dead transitions. [2024-06-28 00:54:20,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 345 transitions, 5925 flow [2024-06-28 00:54:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:54:20,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 00:54:20,559 INFO L175 Difference]: Start difference. First operand has 285 places, 317 transitions, 5060 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:54:20,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 345 transitions, 5925 flow [2024-06-28 00:54:21,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 345 transitions, 5667 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:21,048 INFO L231 Difference]: Finished difference. Result has 288 places, 319 transitions, 5029 flow [2024-06-28 00:54:21,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5029, PETRI_PLACES=288, PETRI_TRANSITIONS=319} [2024-06-28 00:54:21,049 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 00:54:21,049 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 319 transitions, 5029 flow [2024-06-28 00:54:21,049 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 00:54:21,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:21,049 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 00:54:21,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 00:54:21,050 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 00:54:21,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:21,050 INFO L85 PathProgramCache]: Analyzing trace with hash 25708142, now seen corresponding path program 8 times [2024-06-28 00:54:21,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:21,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167005100] [2024-06-28 00:54:21,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:21,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:21,743 INFO 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 00:54:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167005100] [2024-06-28 00:54:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167005100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613360618] [2024-06-28 00:54:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:21,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:21,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:21,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:21,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 319 transitions, 5029 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:21,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:21,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:21,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:22,576 INFO L124 PetriNetUnfolderBase]: 1465/2607 cut-off events. [2024-06-28 00:54:22,577 INFO L125 PetriNetUnfolderBase]: For 99982/99984 co-relation queries the response was YES. [2024-06-28 00:54:22,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18900 conditions, 2607 events. 1465/2607 cut-off events. For 99982/99984 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 15069 event pairs, 315 based on Foata normal form. 2/2469 useless extension candidates. Maximal degree in co-relation 18754. Up to 2139 conditions per place. [2024-06-28 00:54:22,602 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 259 selfloop transitions, 82 changer transitions 0/348 dead transitions. [2024-06-28 00:54:22,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 348 transitions, 5992 flow [2024-06-28 00:54:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:22,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:54:22,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 00:54:22,604 INFO L175 Difference]: Start difference. First operand has 288 places, 319 transitions, 5029 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:54:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 348 transitions, 5992 flow [2024-06-28 00:54:23,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 348 transitions, 5785 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:23,058 INFO L231 Difference]: Finished difference. Result has 292 places, 328 transitions, 5225 flow [2024-06-28 00:54:23,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5225, PETRI_PLACES=292, PETRI_TRANSITIONS=328} [2024-06-28 00:54:23,059 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 251 predicate places. [2024-06-28 00:54:23,059 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 328 transitions, 5225 flow [2024-06-28 00:54:23,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:23,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:23,059 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 00:54:23,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 00:54:23,060 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 00:54:23,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:23,060 INFO L85 PathProgramCache]: Analyzing trace with hash 471133636, now seen corresponding path program 2 times [2024-06-28 00:54:23,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:23,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106641527] [2024-06-28 00:54:23,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:23,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:24,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:24,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106641527] [2024-06-28 00:54:24,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106641527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:24,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:24,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69416039] [2024-06-28 00:54:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:24,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:24,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:24,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 328 transitions, 5225 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 00:54:24,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:24,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:24,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:25,379 INFO L124 PetriNetUnfolderBase]: 1478/2632 cut-off events. [2024-06-28 00:54:25,380 INFO L125 PetriNetUnfolderBase]: For 104075/104075 co-relation queries the response was YES. [2024-06-28 00:54:25,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19183 conditions, 2632 events. 1478/2632 cut-off events. For 104075/104075 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15302 event pairs, 296 based on Foata normal form. 2/2492 useless extension candidates. Maximal degree in co-relation 19034. Up to 1970 conditions per place. [2024-06-28 00:54:25,407 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 243 selfloop transitions, 103 changer transitions 0/353 dead transitions. [2024-06-28 00:54:25,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 353 transitions, 6085 flow [2024-06-28 00:54:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:25,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:54:25,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:54:25,409 INFO L175 Difference]: Start difference. First operand has 292 places, 328 transitions, 5225 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:54:25,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 353 transitions, 6085 flow [2024-06-28 00:54:25,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 353 transitions, 5863 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-28 00:54:25,924 INFO L231 Difference]: Finished difference. Result has 297 places, 330 transitions, 5282 flow [2024-06-28 00:54:25,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5003, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5282, PETRI_PLACES=297, PETRI_TRANSITIONS=330} [2024-06-28 00:54:25,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 00:54:25,925 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 330 transitions, 5282 flow [2024-06-28 00:54:25,925 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 00:54:25,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:25,925 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 00:54:25,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 00:54:25,926 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 00:54:25,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:25,926 INFO L85 PathProgramCache]: Analyzing trace with hash 471393106, now seen corresponding path program 3 times [2024-06-28 00:54:25,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:25,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067253149] [2024-06-28 00:54:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:27,654 INFO 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 00:54:27,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:27,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067253149] [2024-06-28 00:54:27,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067253149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:27,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262101126] [2024-06-28 00:54:27,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:27,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:27,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 330 transitions, 5282 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 00:54:27,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:27,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:27,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:28,413 INFO L124 PetriNetUnfolderBase]: 1491/2650 cut-off events. [2024-06-28 00:54:28,413 INFO L125 PetriNetUnfolderBase]: For 104297/104297 co-relation queries the response was YES. [2024-06-28 00:54:28,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19325 conditions, 2650 events. 1491/2650 cut-off events. For 104297/104297 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15396 event pairs, 296 based on Foata normal form. 2/2508 useless extension candidates. Maximal degree in co-relation 19175. Up to 1989 conditions per place. [2024-06-28 00:54:28,439 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 108 changer transitions 0/355 dead transitions. [2024-06-28 00:54:28,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 355 transitions, 6150 flow [2024-06-28 00:54:28,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:28,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:54:28,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 00:54:28,441 INFO L175 Difference]: Start difference. First operand has 297 places, 330 transitions, 5282 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:54:28,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 355 transitions, 6150 flow [2024-06-28 00:54:28,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 355 transitions, 5895 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:28,964 INFO L231 Difference]: Finished difference. Result has 299 places, 332 transitions, 5320 flow [2024-06-28 00:54:28,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5027, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5320, PETRI_PLACES=299, PETRI_TRANSITIONS=332} [2024-06-28 00:54:28,964 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 00:54:28,964 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 332 transitions, 5320 flow [2024-06-28 00:54:28,964 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 00:54:28,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:28,965 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 00:54:28,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 00:54:28,965 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 00:54:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash 471402406, now seen corresponding path program 4 times [2024-06-28 00:54:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049472962] [2024-06-28 00:54:28,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:30,134 INFO 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 00:54:30,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049472962] [2024-06-28 00:54:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049472962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:30,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:30,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:30,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865148011] [2024-06-28 00:54:30,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:30,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:30,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:30,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:30,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:30,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 332 transitions, 5320 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 00:54:30,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:30,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:30,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:31,244 INFO L124 PetriNetUnfolderBase]: 1521/2695 cut-off events. [2024-06-28 00:54:31,244 INFO L125 PetriNetUnfolderBase]: For 114257/114257 co-relation queries the response was YES. [2024-06-28 00:54:31,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19973 conditions, 2695 events. 1521/2695 cut-off events. For 114257/114257 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15661 event pairs, 296 based on Foata normal form. 2/2546 useless extension candidates. Maximal degree in co-relation 19822. Up to 1955 conditions per place. [2024-06-28 00:54:31,267 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 235 selfloop transitions, 121 changer transitions 0/363 dead transitions. [2024-06-28 00:54:31,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 363 transitions, 6454 flow [2024-06-28 00:54:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:54:31,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 00:54:31,269 INFO L175 Difference]: Start difference. First operand has 299 places, 332 transitions, 5320 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:54:31,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 363 transitions, 6454 flow [2024-06-28 00:54:31,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 363 transitions, 6185 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:31,766 INFO L231 Difference]: Finished difference. Result has 302 places, 336 transitions, 5450 flow [2024-06-28 00:54:31,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5051, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5450, PETRI_PLACES=302, PETRI_TRANSITIONS=336} [2024-06-28 00:54:31,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 261 predicate places. [2024-06-28 00:54:31,767 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 336 transitions, 5450 flow [2024-06-28 00:54:31,767 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 00:54:31,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:31,767 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 00:54:31,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 00:54:31,767 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 00:54:31,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:31,768 INFO L85 PathProgramCache]: Analyzing trace with hash 463774050, now seen corresponding path program 9 times [2024-06-28 00:54:31,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:31,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750133057] [2024-06-28 00:54:31,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:32,464 INFO 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 00:54:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:32,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750133057] [2024-06-28 00:54:32,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750133057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:32,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:32,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:32,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202151721] [2024-06-28 00:54:32,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:32,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:32,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:32,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:32,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:32,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:32,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 336 transitions, 5450 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 00:54:32,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:32,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:32,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:33,280 INFO L124 PetriNetUnfolderBase]: 1537/2722 cut-off events. [2024-06-28 00:54:33,280 INFO L125 PetriNetUnfolderBase]: For 118403/118403 co-relation queries the response was YES. [2024-06-28 00:54:33,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20344 conditions, 2722 events. 1537/2722 cut-off events. For 118403/118403 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15860 event pairs, 313 based on Foata normal form. 2/2575 useless extension candidates. Maximal degree in co-relation 20192. Up to 2255 conditions per place. [2024-06-28 00:54:33,310 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 265 selfloop transitions, 88 changer transitions 0/360 dead transitions. [2024-06-28 00:54:33,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 360 transitions, 6360 flow [2024-06-28 00:54:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 00:54:33,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-28 00:54:33,311 INFO L175 Difference]: Start difference. First operand has 302 places, 336 transitions, 5450 flow. Second operand 9 states and 139 transitions. [2024-06-28 00:54:33,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 360 transitions, 6360 flow [2024-06-28 00:54:33,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 360 transitions, 6134 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:33,837 INFO L231 Difference]: Finished difference. Result has 304 places, 338 transitions, 5519 flow [2024-06-28 00:54:33,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5224, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5519, PETRI_PLACES=304, PETRI_TRANSITIONS=338} [2024-06-28 00:54:33,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-28 00:54:33,838 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 338 transitions, 5519 flow [2024-06-28 00:54:33,838 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 00:54:33,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:33,838 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 00:54:33,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 00:54:33,838 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 00:54:33,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:33,839 INFO L85 PathProgramCache]: Analyzing trace with hash 471402747, now seen corresponding path program 1 times [2024-06-28 00:54:33,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:33,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453145893] [2024-06-28 00:54:33,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:33,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:35,071 INFO 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 00:54:35,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:35,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453145893] [2024-06-28 00:54:35,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453145893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:35,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:35,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:35,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729832223] [2024-06-28 00:54:35,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:35,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:35,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:35,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:35,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:35,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 338 transitions, 5519 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 00:54:35,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:35,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:35,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:36,114 INFO L124 PetriNetUnfolderBase]: 1661/3005 cut-off events. [2024-06-28 00:54:36,114 INFO L125 PetriNetUnfolderBase]: For 169232/169232 co-relation queries the response was YES. [2024-06-28 00:54:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22111 conditions, 3005 events. 1661/3005 cut-off events. For 169232/169232 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 18079 event pairs, 387 based on Foata normal form. 14/2854 useless extension candidates. Maximal degree in co-relation 21957. Up to 2290 conditions per place. [2024-06-28 00:54:36,148 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 277 selfloop transitions, 87 changer transitions 0/371 dead transitions. [2024-06-28 00:54:36,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 371 transitions, 6531 flow [2024-06-28 00:54:36,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:36,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:54:36,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 00:54:36,149 INFO L175 Difference]: Start difference. First operand has 304 places, 338 transitions, 5519 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:54:36,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 371 transitions, 6531 flow [2024-06-28 00:54:36,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 371 transitions, 6256 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:36,837 INFO L231 Difference]: Finished difference. Result has 307 places, 340 transitions, 5491 flow [2024-06-28 00:54:36,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5244, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5491, PETRI_PLACES=307, PETRI_TRANSITIONS=340} [2024-06-28 00:54:36,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 00:54:36,839 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 340 transitions, 5491 flow [2024-06-28 00:54:36,839 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 00:54:36,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:36,839 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 00:54:36,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 00:54:36,840 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 00:54:36,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:36,840 INFO L85 PathProgramCache]: Analyzing trace with hash 463768470, now seen corresponding path program 10 times [2024-06-28 00:54:36,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:36,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913890454] [2024-06-28 00:54:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:36,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:37,559 INFO 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 00:54:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913890454] [2024-06-28 00:54:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913890454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:37,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138203608] [2024-06-28 00:54:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:37,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:37,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:37,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:37,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 340 transitions, 5491 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 00:54:37,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:37,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:37,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:38,439 INFO L124 PetriNetUnfolderBase]: 1685/3057 cut-off events. [2024-06-28 00:54:38,440 INFO L125 PetriNetUnfolderBase]: For 135187/135187 co-relation queries the response was YES. [2024-06-28 00:54:38,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22517 conditions, 3057 events. 1685/3057 cut-off events. For 135187/135187 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18588 event pairs, 361 based on Foata normal form. 2/2890 useless extension candidates. Maximal degree in co-relation 22362. Up to 2524 conditions per place. [2024-06-28 00:54:38,472 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 278 selfloop transitions, 84 changer transitions 0/369 dead transitions. [2024-06-28 00:54:38,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 369 transitions, 6475 flow [2024-06-28 00:54:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 00:54:38,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 00:54:38,475 INFO L175 Difference]: Start difference. First operand has 307 places, 340 transitions, 5491 flow. Second operand 9 states and 143 transitions. [2024-06-28 00:54:38,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 369 transitions, 6475 flow [2024-06-28 00:54:39,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 369 transitions, 6264 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:54:39,105 INFO L231 Difference]: Finished difference. Result has 309 places, 343 transitions, 5617 flow [2024-06-28 00:54:39,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5617, PETRI_PLACES=309, PETRI_TRANSITIONS=343} [2024-06-28 00:54:39,105 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 00:54:39,106 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 343 transitions, 5617 flow [2024-06-28 00:54:39,106 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 00:54:39,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:39,106 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 00:54:39,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 00:54:39,106 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 00:54:39,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:39,107 INFO L85 PathProgramCache]: Analyzing trace with hash 463983796, now seen corresponding path program 5 times [2024-06-28 00:54:39,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:39,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403722877] [2024-06-28 00:54:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:39,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:40,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:40,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403722877] [2024-06-28 00:54:40,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403722877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:40,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:40,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:40,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787588774] [2024-06-28 00:54:40,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:40,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:40,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:40,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:40,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:40,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 343 transitions, 5617 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 00:54:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:41,503 INFO L124 PetriNetUnfolderBase]: 1681/3051 cut-off events. [2024-06-28 00:54:41,504 INFO L125 PetriNetUnfolderBase]: For 129454/129454 co-relation queries the response was YES. [2024-06-28 00:54:41,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22078 conditions, 3051 events. 1681/3051 cut-off events. For 129454/129454 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18547 event pairs, 375 based on Foata normal form. 2/2883 useless extension candidates. Maximal degree in co-relation 21921. Up to 2519 conditions per place. [2024-06-28 00:54:41,535 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 90 changer transitions 0/366 dead transitions. [2024-06-28 00:54:41,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 366 transitions, 6439 flow [2024-06-28 00:54:41,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 00:54:41,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 00:54:41,536 INFO L175 Difference]: Start difference. First operand has 309 places, 343 transitions, 5617 flow. Second operand 10 states and 150 transitions. [2024-06-28 00:54:41,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 366 transitions, 6439 flow [2024-06-28 00:54:42,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 366 transitions, 6112 flow, removed 84 selfloop flow, removed 6 redundant places. [2024-06-28 00:54:42,216 INFO L231 Difference]: Finished difference. Result has 313 places, 343 transitions, 5475 flow [2024-06-28 00:54:42,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5290, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5475, PETRI_PLACES=313, PETRI_TRANSITIONS=343} [2024-06-28 00:54:42,216 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 00:54:42,216 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 343 transitions, 5475 flow [2024-06-28 00:54:42,216 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 00:54:42,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:42,217 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 00:54:42,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 00:54:42,217 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 00:54:42,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:42,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1848920176, now seen corresponding path program 11 times [2024-06-28 00:54:42,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895920318] [2024-06-28 00:54:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:42,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:43,012 INFO 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 00:54:43,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:43,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895920318] [2024-06-28 00:54:43,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895920318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:43,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:43,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:43,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239792529] [2024-06-28 00:54:43,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:43,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:43,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:43,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:43,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 343 transitions, 5475 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 00:54:43,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:43,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:43,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:43,917 INFO L124 PetriNetUnfolderBase]: 1697/3073 cut-off events. [2024-06-28 00:54:43,918 INFO L125 PetriNetUnfolderBase]: For 128125/128127 co-relation queries the response was YES. [2024-06-28 00:54:43,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22008 conditions, 3073 events. 1697/3073 cut-off events. For 128125/128127 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18653 event pairs, 395 based on Foata normal form. 2/2904 useless extension candidates. Maximal degree in co-relation 21850. Up to 2529 conditions per place. [2024-06-28 00:54:43,943 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 272 selfloop transitions, 86 changer transitions 0/365 dead transitions. [2024-06-28 00:54:43,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 365 transitions, 6397 flow [2024-06-28 00:54:43,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-28 00:54:43,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-28 00:54:43,945 INFO L175 Difference]: Start difference. First operand has 313 places, 343 transitions, 5475 flow. Second operand 9 states and 137 transitions. [2024-06-28 00:54:43,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 365 transitions, 6397 flow [2024-06-28 00:54:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 365 transitions, 6186 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:44,615 INFO L231 Difference]: Finished difference. Result has 313 places, 345 transitions, 5561 flow [2024-06-28 00:54:44,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5561, PETRI_PLACES=313, PETRI_TRANSITIONS=345} [2024-06-28 00:54:44,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 00:54:44,615 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 345 transitions, 5561 flow [2024-06-28 00:54:44,615 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 00:54:44,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:44,616 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 00:54:44,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 00:54:44,616 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 00:54:44,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1848928112, now seen corresponding path program 6 times [2024-06-28 00:54:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:44,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496452406] [2024-06-28 00:54:44,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:44,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:45,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:45,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:45,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496452406] [2024-06-28 00:54:45,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496452406] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:45,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:45,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:45,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060659877] [2024-06-28 00:54:45,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:45,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:45,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:45,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:45,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:45,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:45,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 345 transitions, 5561 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 00:54:45,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:45,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:45,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:46,889 INFO L124 PetriNetUnfolderBase]: 1710/3093 cut-off events. [2024-06-28 00:54:46,890 INFO L125 PetriNetUnfolderBase]: For 133709/133711 co-relation queries the response was YES. [2024-06-28 00:54:46,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22247 conditions, 3093 events. 1710/3093 cut-off events. For 133709/133711 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18774 event pairs, 389 based on Foata normal form. 2/2919 useless extension candidates. Maximal degree in co-relation 22088. Up to 2540 conditions per place. [2024-06-28 00:54:46,924 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 271 selfloop transitions, 87 changer transitions 0/365 dead transitions. [2024-06-28 00:54:46,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 365 transitions, 6435 flow [2024-06-28 00:54:46,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 00:54:46,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084084084084084 [2024-06-28 00:54:46,925 INFO L175 Difference]: Start difference. First operand has 313 places, 345 transitions, 5561 flow. Second operand 9 states and 136 transitions. [2024-06-28 00:54:46,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 365 transitions, 6435 flow [2024-06-28 00:54:47,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 365 transitions, 6154 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:47,583 INFO L231 Difference]: Finished difference. Result has 315 places, 347 transitions, 5540 flow [2024-06-28 00:54:47,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5540, PETRI_PLACES=315, PETRI_TRANSITIONS=347} [2024-06-28 00:54:47,583 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 274 predicate places. [2024-06-28 00:54:47,583 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 347 transitions, 5540 flow [2024-06-28 00:54:47,584 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 00:54:47,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:47,584 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 00:54:47,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 00:54:47,584 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 00:54:47,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:47,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2010818150, now seen corresponding path program 7 times [2024-06-28 00:54:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836482585] [2024-06-28 00:54:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:48,580 INFO 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 00:54:48,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:48,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836482585] [2024-06-28 00:54:48,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836482585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:48,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:48,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:48,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138734735] [2024-06-28 00:54:48,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:48,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:48,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:48,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:48,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:48,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:48,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 347 transitions, 5540 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 00:54:48,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:48,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:48,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:49,484 INFO L124 PetriNetUnfolderBase]: 1723/3113 cut-off events. [2024-06-28 00:54:49,485 INFO L125 PetriNetUnfolderBase]: For 132191/132191 co-relation queries the response was YES. [2024-06-28 00:54:49,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22137 conditions, 3113 events. 1723/3113 cut-off events. For 132191/132191 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18889 event pairs, 501 based on Foata normal form. 2/2942 useless extension candidates. Maximal degree in co-relation 21977. Up to 2814 conditions per place. [2024-06-28 00:54:49,523 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 24 changer transitions 0/371 dead transitions. [2024-06-28 00:54:49,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 371 transitions, 6566 flow [2024-06-28 00:54:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-06-28 00:54:49,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882063882063882 [2024-06-28 00:54:49,525 INFO L175 Difference]: Start difference. First operand has 315 places, 347 transitions, 5540 flow. Second operand 11 states and 158 transitions. [2024-06-28 00:54:49,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 371 transitions, 6566 flow [2024-06-28 00:54:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 371 transitions, 6336 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:50,323 INFO L231 Difference]: Finished difference. Result has 319 places, 349 transitions, 5405 flow [2024-06-28 00:54:50,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5310, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5405, PETRI_PLACES=319, PETRI_TRANSITIONS=349} [2024-06-28 00:54:50,324 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-28 00:54:50,324 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 349 transitions, 5405 flow [2024-06-28 00:54:50,324 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 00:54:50,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:50,324 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 00:54:50,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 00:54:50,325 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 00:54:50,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -823489123, now seen corresponding path program 2 times [2024-06-28 00:54:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785147301] [2024-06-28 00:54:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:51,751 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 00:54:51,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:51,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785147301] [2024-06-28 00:54:51,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785147301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:51,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:51,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:51,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534438602] [2024-06-28 00:54:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:51,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:51,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:51,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:51,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 349 transitions, 5405 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 00:54:51,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:51,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:51,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:52,909 INFO L124 PetriNetUnfolderBase]: 1739/3137 cut-off events. [2024-06-28 00:54:52,910 INFO L125 PetriNetUnfolderBase]: For 133975/133978 co-relation queries the response was YES. [2024-06-28 00:54:52,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22136 conditions, 3137 events. 1739/3137 cut-off events. For 133975/133978 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19019 event pairs, 439 based on Foata normal form. 2/2961 useless extension candidates. Maximal degree in co-relation 21975. Up to 2729 conditions per place. [2024-06-28 00:54:52,946 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 294 selfloop transitions, 73 changer transitions 0/374 dead transitions. [2024-06-28 00:54:52,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 374 transitions, 6344 flow [2024-06-28 00:54:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:54:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:54:52,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:54:52,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906633906633907 [2024-06-28 00:54:52,948 INFO L175 Difference]: Start difference. First operand has 319 places, 349 transitions, 5405 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:54:52,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 374 transitions, 6344 flow [2024-06-28 00:54:53,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 374 transitions, 6267 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:53,739 INFO L231 Difference]: Finished difference. Result has 321 places, 351 transitions, 5587 flow [2024-06-28 00:54:53,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5328, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5587, PETRI_PLACES=321, PETRI_TRANSITIONS=351} [2024-06-28 00:54:53,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 00:54:53,740 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 351 transitions, 5587 flow [2024-06-28 00:54:53,740 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 00:54:53,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:53,740 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 00:54:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 00:54:53,740 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 00:54:53,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:53,741 INFO L85 PathProgramCache]: Analyzing trace with hash 119091810, now seen corresponding path program 12 times [2024-06-28 00:54:53,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:53,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509759693] [2024-06-28 00:54:53,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:53,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:54,456 INFO 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 00:54:54,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:54,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509759693] [2024-06-28 00:54:54,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509759693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:54,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:54,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 00:54:54,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682950613] [2024-06-28 00:54:54,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:54,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 00:54:54,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:54,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 00:54:54,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 00:54:54,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:54,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 351 transitions, 5587 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:54,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:54,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:54,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:55,271 INFO L124 PetriNetUnfolderBase]: 1755/3169 cut-off events. [2024-06-28 00:54:55,271 INFO L125 PetriNetUnfolderBase]: For 142499/142501 co-relation queries the response was YES. [2024-06-28 00:54:55,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22681 conditions, 3169 events. 1755/3169 cut-off events. For 142499/142501 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 19361 event pairs, 396 based on Foata normal form. 2/2993 useless extension candidates. Maximal degree in co-relation 22519. Up to 2608 conditions per place. [2024-06-28 00:54:55,307 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 278 selfloop transitions, 89 changer transitions 0/374 dead transitions. [2024-06-28 00:54:55,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 374 transitions, 6543 flow [2024-06-28 00:54:55,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:54:55,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:54:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 00:54:55,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 00:54:55,309 INFO L175 Difference]: Start difference. First operand has 321 places, 351 transitions, 5587 flow. Second operand 9 states and 140 transitions. [2024-06-28 00:54:55,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 374 transitions, 6543 flow [2024-06-28 00:54:56,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 374 transitions, 6300 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 00:54:56,047 INFO L231 Difference]: Finished difference. Result has 321 places, 353 transitions, 5653 flow [2024-06-28 00:54:56,048 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5344, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5653, PETRI_PLACES=321, PETRI_TRANSITIONS=353} [2024-06-28 00:54:56,048 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-28 00:54:56,048 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 353 transitions, 5653 flow [2024-06-28 00:54:56,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:54:56,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:56,048 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 00:54:56,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 00:54:56,049 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 00:54:56,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:56,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1856077952, now seen corresponding path program 8 times [2024-06-28 00:54:56,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:56,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848476591] [2024-06-28 00:54:56,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:56,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:57,092 INFO 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 00:54:57,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:57,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848476591] [2024-06-28 00:54:57,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848476591] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:57,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:57,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:54:57,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311648215] [2024-06-28 00:54:57,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:57,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:54:57,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:57,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:54:57,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:54:57,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:57,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 353 transitions, 5653 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 00:54:57,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:57,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:57,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:54:58,034 INFO L124 PetriNetUnfolderBase]: 1768/3189 cut-off events. [2024-06-28 00:54:58,034 INFO L125 PetriNetUnfolderBase]: For 145773/145775 co-relation queries the response was YES. [2024-06-28 00:54:58,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22878 conditions, 3189 events. 1768/3189 cut-off events. For 145773/145775 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19466 event pairs, 390 based on Foata normal form. 2/3008 useless extension candidates. Maximal degree in co-relation 22715. Up to 2591 conditions per place. [2024-06-28 00:54:58,071 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 275 selfloop transitions, 95 changer transitions 0/377 dead transitions. [2024-06-28 00:54:58,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 377 transitions, 6581 flow [2024-06-28 00:54:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:54:58,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:54:58,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:54:58,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:54:58,072 INFO L175 Difference]: Start difference. First operand has 321 places, 353 transitions, 5653 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:54:58,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 377 transitions, 6581 flow [2024-06-28 00:54:58,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 377 transitions, 6288 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 00:54:58,812 INFO L231 Difference]: Finished difference. Result has 324 places, 355 transitions, 5639 flow [2024-06-28 00:54:58,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5360, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5639, PETRI_PLACES=324, PETRI_TRANSITIONS=355} [2024-06-28 00:54:58,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 283 predicate places. [2024-06-28 00:54:58,812 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 355 transitions, 5639 flow [2024-06-28 00:54:58,812 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 00:54:58,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:54:58,813 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 00:54:58,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 00:54:58,813 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 00:54:58,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:54:58,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2104508441, now seen corresponding path program 3 times [2024-06-28 00:54:58,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:54:58,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51129424] [2024-06-28 00:54:58,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:54:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:54:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:54:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:54:59,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:54:59,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51129424] [2024-06-28 00:54:59,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51129424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:54:59,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:54:59,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:54:59,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710902327] [2024-06-28 00:54:59,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:54:59,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:54:59,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:54:59,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:54:59,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:54:59,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:54:59,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 355 transitions, 5639 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 00:54:59,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:54:59,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:54:59,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:00,936 INFO L124 PetriNetUnfolderBase]: 1784/3219 cut-off events. [2024-06-28 00:55:00,936 INFO L125 PetriNetUnfolderBase]: For 146428/146428 co-relation queries the response was YES. [2024-06-28 00:55:00,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22949 conditions, 3219 events. 1784/3219 cut-off events. For 146428/146428 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 19678 event pairs, 505 based on Foata normal form. 2/3043 useless extension candidates. Maximal degree in co-relation 22785. Up to 2930 conditions per place. [2024-06-28 00:55:00,976 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 345 selfloop transitions, 26 changer transitions 0/378 dead transitions. [2024-06-28 00:55:00,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 378 transitions, 6563 flow [2024-06-28 00:55:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:00,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 00:55:00,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3857493857493858 [2024-06-28 00:55:00,977 INFO L175 Difference]: Start difference. First operand has 324 places, 355 transitions, 5639 flow. Second operand 11 states and 157 transitions. [2024-06-28 00:55:00,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 378 transitions, 6563 flow [2024-06-28 00:55:01,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 378 transitions, 6308 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:01,947 INFO L231 Difference]: Finished difference. Result has 327 places, 357 transitions, 5555 flow [2024-06-28 00:55:01,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5384, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5555, PETRI_PLACES=327, PETRI_TRANSITIONS=357} [2024-06-28 00:55:01,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 00:55:01,948 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 357 transitions, 5555 flow [2024-06-28 00:55:01,948 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 00:55:01,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:01,948 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 00:55:01,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 00:55:01,949 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 00:55:01,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash 367253188, now seen corresponding path program 13 times [2024-06-28 00:55:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:01,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882776502] [2024-06-28 00:55:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:01,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:02,629 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 00:55:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:02,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882776502] [2024-06-28 00:55:02,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882776502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:02,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:02,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:02,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280930680] [2024-06-28 00:55:02,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:02,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:02,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:02,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:02,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 357 transitions, 5555 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 00:55:02,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:02,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:02,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:03,507 INFO L124 PetriNetUnfolderBase]: 1800/3248 cut-off events. [2024-06-28 00:55:03,508 INFO L125 PetriNetUnfolderBase]: For 151922/151922 co-relation queries the response was YES. [2024-06-28 00:55:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23057 conditions, 3248 events. 1800/3248 cut-off events. For 151922/151922 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 19909 event pairs, 512 based on Foata normal form. 2/3073 useless extension candidates. Maximal degree in co-relation 22892. Up to 2983 conditions per place. [2024-06-28 00:55:03,545 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 354 selfloop transitions, 16 changer transitions 0/377 dead transitions. [2024-06-28 00:55:03,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 377 transitions, 6493 flow [2024-06-28 00:55:03,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:03,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 00:55:03,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39039039039039036 [2024-06-28 00:55:03,546 INFO L175 Difference]: Start difference. First operand has 327 places, 357 transitions, 5555 flow. Second operand 9 states and 130 transitions. [2024-06-28 00:55:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 377 transitions, 6493 flow [2024-06-28 00:55:04,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 377 transitions, 6338 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:04,291 INFO L231 Difference]: Finished difference. Result has 327 places, 359 transitions, 5569 flow [2024-06-28 00:55:04,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5400, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5569, PETRI_PLACES=327, PETRI_TRANSITIONS=359} [2024-06-28 00:55:04,291 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 00:55:04,291 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 359 transitions, 5569 flow [2024-06-28 00:55:04,291 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 00:55:04,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:04,292 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 00:55:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 00:55:04,292 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 00:55:04,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1856346722, now seen corresponding path program 9 times [2024-06-28 00:55:04,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:04,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341708544] [2024-06-28 00:55:04,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:04,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:05,553 INFO 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 00:55:05,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:05,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341708544] [2024-06-28 00:55:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341708544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:05,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:05,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:05,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627141296] [2024-06-28 00:55:05,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:05,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:05,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:05,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:05,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:05,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:05,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 359 transitions, 5569 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 00:55:05,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:05,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:05,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:06,722 INFO L124 PetriNetUnfolderBase]: 1813/3264 cut-off events. [2024-06-28 00:55:06,723 INFO L125 PetriNetUnfolderBase]: For 154444/154446 co-relation queries the response was YES. [2024-06-28 00:55:06,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23116 conditions, 3264 events. 1813/3264 cut-off events. For 154444/154446 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19976 event pairs, 400 based on Foata normal form. 2/3081 useless extension candidates. Maximal degree in co-relation 22950. Up to 2632 conditions per place. [2024-06-28 00:55:06,752 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 277 selfloop transitions, 102 changer transitions 0/386 dead transitions. [2024-06-28 00:55:06,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 386 transitions, 6535 flow [2024-06-28 00:55:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:55:06,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786240786240785 [2024-06-28 00:55:06,753 INFO L175 Difference]: Start difference. First operand has 327 places, 359 transitions, 5569 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:55:06,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 386 transitions, 6535 flow [2024-06-28 00:55:07,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 386 transitions, 6382 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:07,660 INFO L231 Difference]: Finished difference. Result has 331 places, 361 transitions, 5714 flow [2024-06-28 00:55:07,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5714, PETRI_PLACES=331, PETRI_TRANSITIONS=361} [2024-06-28 00:55:07,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-28 00:55:07,661 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 361 transitions, 5714 flow [2024-06-28 00:55:07,661 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 00:55:07,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:07,661 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 00:55:07,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 00:55:07,662 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 00:55:07,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:07,662 INFO L85 PathProgramCache]: Analyzing trace with hash 2104239330, now seen corresponding path program 10 times [2024-06-28 00:55:07,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:07,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537859690] [2024-06-28 00:55:07,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:07,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:08,881 INFO 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 00:55:08,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:08,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537859690] [2024-06-28 00:55:08,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537859690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:08,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:08,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:08,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750126669] [2024-06-28 00:55:08,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:08,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:08,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:08,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:08,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:08,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:08,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 361 transitions, 5714 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 00:55:08,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:08,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:08,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:10,069 INFO L124 PetriNetUnfolderBase]: 1826/3284 cut-off events. [2024-06-28 00:55:10,069 INFO L125 PetriNetUnfolderBase]: For 155031/155033 co-relation queries the response was YES. [2024-06-28 00:55:10,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23398 conditions, 3284 events. 1826/3284 cut-off events. For 155031/155033 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 20119 event pairs, 401 based on Foata normal form. 2/3097 useless extension candidates. Maximal degree in co-relation 23231. Up to 2136 conditions per place. [2024-06-28 00:55:10,105 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 226 selfloop transitions, 152 changer transitions 0/385 dead transitions. [2024-06-28 00:55:10,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 385 transitions, 6842 flow [2024-06-28 00:55:10,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:55:10,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 00:55:10,107 INFO L175 Difference]: Start difference. First operand has 331 places, 361 transitions, 5714 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:55:10,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 385 transitions, 6842 flow [2024-06-28 00:55:10,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 385 transitions, 6573 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:10,961 INFO L231 Difference]: Finished difference. Result has 333 places, 363 transitions, 5842 flow [2024-06-28 00:55:10,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5445, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5842, PETRI_PLACES=333, PETRI_TRANSITIONS=363} [2024-06-28 00:55:10,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 00:55:10,961 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 363 transitions, 5842 flow [2024-06-28 00:55:10,961 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 00:55:10,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:10,962 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 00:55:10,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 00:55:10,962 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 00:55:10,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:10,962 INFO L85 PathProgramCache]: Analyzing trace with hash 2104508100, now seen corresponding path program 11 times [2024-06-28 00:55:10,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:10,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865493136] [2024-06-28 00:55:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:10,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:12,025 INFO 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 00:55:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865493136] [2024-06-28 00:55:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865493136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:12,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:12,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754931253] [2024-06-28 00:55:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:12,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:12,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:12,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:12,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 363 transitions, 5842 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 00:55:12,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:12,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:12,947 INFO L124 PetriNetUnfolderBase]: 1831/3293 cut-off events. [2024-06-28 00:55:12,948 INFO L125 PetriNetUnfolderBase]: For 154220/154220 co-relation queries the response was YES. [2024-06-28 00:55:12,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23586 conditions, 3293 events. 1831/3293 cut-off events. For 154220/154220 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 20181 event pairs, 509 based on Foata normal form. 2/3109 useless extension candidates. Maximal degree in co-relation 23418. Up to 2913 conditions per place. [2024-06-28 00:55:12,987 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 346 selfloop transitions, 37 changer transitions 0/390 dead transitions. [2024-06-28 00:55:12,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 390 transitions, 7002 flow [2024-06-28 00:55:12,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:12,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 00:55:12,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40786240786240785 [2024-06-28 00:55:12,989 INFO L175 Difference]: Start difference. First operand has 333 places, 363 transitions, 5842 flow. Second operand 11 states and 166 transitions. [2024-06-28 00:55:12,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 390 transitions, 7002 flow [2024-06-28 00:55:13,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 390 transitions, 6706 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:13,859 INFO L231 Difference]: Finished difference. Result has 337 places, 365 transitions, 5722 flow [2024-06-28 00:55:13,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5548, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5722, PETRI_PLACES=337, PETRI_TRANSITIONS=365} [2024-06-28 00:55:13,865 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 296 predicate places. [2024-06-28 00:55:13,866 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 365 transitions, 5722 flow [2024-06-28 00:55:13,866 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 00:55:13,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:13,866 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 00:55:13,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 00:55:13,866 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 00:55:13,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:13,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1856347063, now seen corresponding path program 4 times [2024-06-28 00:55:13,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:13,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578920701] [2024-06-28 00:55:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:13,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:15,360 INFO 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 00:55:15,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:15,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578920701] [2024-06-28 00:55:15,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578920701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:15,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:15,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:15,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397930485] [2024-06-28 00:55:15,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:15,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:15,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:15,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:15,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:15,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:15,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 365 transitions, 5722 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 00:55:15,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:15,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:15,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:16,432 INFO L124 PetriNetUnfolderBase]: 1851/3331 cut-off events. [2024-06-28 00:55:16,432 INFO L125 PetriNetUnfolderBase]: For 156785/156788 co-relation queries the response was YES. [2024-06-28 00:55:16,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3331 events. 1851/3331 cut-off events. For 156785/156788 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20488 event pairs, 433 based on Foata normal form. 2/3140 useless extension candidates. Maximal degree in co-relation 23324. Up to 2845 conditions per place. [2024-06-28 00:55:16,472 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 291 selfloop transitions, 92 changer transitions 0/390 dead transitions. [2024-06-28 00:55:16,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 390 transitions, 6703 flow [2024-06-28 00:55:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:55:16,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 00:55:16,473 INFO L175 Difference]: Start difference. First operand has 337 places, 365 transitions, 5722 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:55:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 390 transitions, 6703 flow [2024-06-28 00:55:17,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 390 transitions, 6557 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:17,340 INFO L231 Difference]: Finished difference. Result has 338 places, 366 transitions, 5802 flow [2024-06-28 00:55:17,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5576, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5802, PETRI_PLACES=338, PETRI_TRANSITIONS=366} [2024-06-28 00:55:17,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-28 00:55:17,349 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 366 transitions, 5802 flow [2024-06-28 00:55:17,349 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 00:55:17,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:17,349 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 00:55:17,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 00:55:17,349 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 00:55:17,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:17,350 INFO L85 PathProgramCache]: Analyzing trace with hash 111734580, now seen corresponding path program 14 times [2024-06-28 00:55:17,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:17,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218573279] [2024-06-28 00:55:17,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:17,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:18,128 INFO 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 00:55:18,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:18,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218573279] [2024-06-28 00:55:18,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218573279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:18,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:18,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:18,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557498537] [2024-06-28 00:55:18,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:18,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:18,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:18,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:18,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:18,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:18,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 366 transitions, 5802 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 00:55:18,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:18,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:19,051 INFO L124 PetriNetUnfolderBase]: 1875/3385 cut-off events. [2024-06-28 00:55:19,051 INFO L125 PetriNetUnfolderBase]: For 164984/164986 co-relation queries the response was YES. [2024-06-28 00:55:19,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24138 conditions, 3385 events. 1875/3385 cut-off events. For 164984/164986 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 20995 event pairs, 409 based on Foata normal form. 2/3192 useless extension candidates. Maximal degree in co-relation 23968. Up to 2796 conditions per place. [2024-06-28 00:55:19,091 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 300 selfloop transitions, 86 changer transitions 0/393 dead transitions. [2024-06-28 00:55:19,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 393 transitions, 6850 flow [2024-06-28 00:55:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 00:55:19,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 00:55:19,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 00:55:19,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 00:55:19,092 INFO L175 Difference]: Start difference. First operand has 338 places, 366 transitions, 5802 flow. Second operand 9 states and 141 transitions. [2024-06-28 00:55:19,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 393 transitions, 6850 flow [2024-06-28 00:55:19,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 393 transitions, 6646 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:19,987 INFO L231 Difference]: Finished difference. Result has 340 places, 369 transitions, 5959 flow [2024-06-28 00:55:19,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5598, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5959, PETRI_PLACES=340, PETRI_TRANSITIONS=369} [2024-06-28 00:55:19,988 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-28 00:55:19,988 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 369 transitions, 5959 flow [2024-06-28 00:55:19,988 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 00:55:19,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:19,988 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 00:55:19,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 00:55:19,989 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 00:55:19,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:19,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1865717735, now seen corresponding path program 5 times [2024-06-28 00:55:19,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:19,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319114754] [2024-06-28 00:55:19,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:19,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:20,809 INFO 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 00:55:20,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:20,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319114754] [2024-06-28 00:55:20,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319114754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:20,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:20,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354229122] [2024-06-28 00:55:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:20,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:20,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:20,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:20,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 369 transitions, 5959 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 00:55:20,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:20,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:20,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:21,796 INFO L124 PetriNetUnfolderBase]: 1891/3414 cut-off events. [2024-06-28 00:55:21,796 INFO L125 PetriNetUnfolderBase]: For 171141/171141 co-relation queries the response was YES. [2024-06-28 00:55:21,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24472 conditions, 3414 events. 1891/3414 cut-off events. For 171141/171141 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21177 event pairs, 544 based on Foata normal form. 2/3225 useless extension candidates. Maximal degree in co-relation 24300. Up to 3126 conditions per place. [2024-06-28 00:55:21,837 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 363 selfloop transitions, 22 changer transitions 0/392 dead transitions. [2024-06-28 00:55:21,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 392 transitions, 6921 flow [2024-06-28 00:55:21,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-28 00:55:21,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-28 00:55:21,840 INFO L175 Difference]: Start difference. First operand has 340 places, 369 transitions, 5959 flow. Second operand 11 states and 154 transitions. [2024-06-28 00:55:21,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 392 transitions, 6921 flow [2024-06-28 00:55:22,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 392 transitions, 6590 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 00:55:22,766 INFO L231 Difference]: Finished difference. Result has 345 places, 371 transitions, 5801 flow [2024-06-28 00:55:22,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5801, PETRI_PLACES=345, PETRI_TRANSITIONS=371} [2024-06-28 00:55:22,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 00:55:22,767 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 371 transitions, 5801 flow [2024-06-28 00:55:22,767 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 00:55:22,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:22,767 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 00:55:22,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 00:55:22,768 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 00:55:22,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash 692657305, now seen corresponding path program 6 times [2024-06-28 00:55:22,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:22,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108882326] [2024-06-28 00:55:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:22,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:23,880 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 00:55:23,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:23,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108882326] [2024-06-28 00:55:23,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108882326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:23,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:23,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:23,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157622505] [2024-06-28 00:55:23,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:23,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:23,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:23,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 371 transitions, 5801 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 00:55:23,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:23,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:23,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:24,967 INFO L124 PetriNetUnfolderBase]: 1907/3443 cut-off events. [2024-06-28 00:55:24,967 INFO L125 PetriNetUnfolderBase]: For 170088/170088 co-relation queries the response was YES. [2024-06-28 00:55:24,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24186 conditions, 3443 events. 1907/3443 cut-off events. For 170088/170088 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21411 event pairs, 534 based on Foata normal form. 2/3254 useless extension candidates. Maximal degree in co-relation 24013. Up to 3089 conditions per place. [2024-06-28 00:55:25,008 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 368 selfloop transitions, 26 changer transitions 0/401 dead transitions. [2024-06-28 00:55:25,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 401 transitions, 7129 flow [2024-06-28 00:55:25,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:55:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:55:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-28 00:55:25,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-28 00:55:25,010 INFO L175 Difference]: Start difference. First operand has 345 places, 371 transitions, 5801 flow. Second operand 12 states and 168 transitions. [2024-06-28 00:55:25,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 401 transitions, 7129 flow [2024-06-28 00:55:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 401 transitions, 6972 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:26,105 INFO L231 Difference]: Finished difference. Result has 349 places, 376 transitions, 5969 flow [2024-06-28 00:55:26,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5644, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5969, PETRI_PLACES=349, PETRI_TRANSITIONS=376} [2024-06-28 00:55:26,106 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 00:55:26,106 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 376 transitions, 5969 flow [2024-06-28 00:55:26,106 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 00:55:26,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:26,106 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 00:55:26,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 00:55:26,107 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 00:55:26,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash 681229465, now seen corresponding path program 7 times [2024-06-28 00:55:26,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:26,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91886645] [2024-06-28 00:55:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:26,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91886645] [2024-06-28 00:55:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91886645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307611964] [2024-06-28 00:55:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:27,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:27,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:27,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 376 transitions, 5969 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 00:55:27,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:27,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:27,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:28,411 INFO L124 PetriNetUnfolderBase]: 1904/3438 cut-off events. [2024-06-28 00:55:28,411 INFO L125 PetriNetUnfolderBase]: For 161273/161273 co-relation queries the response was YES. [2024-06-28 00:55:28,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23805 conditions, 3438 events. 1904/3438 cut-off events. For 161273/161273 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21377 event pairs, 543 based on Foata normal form. 2/3249 useless extension candidates. Maximal degree in co-relation 23630. Up to 3087 conditions per place. [2024-06-28 00:55:28,446 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 366 selfloop transitions, 26 changer transitions 0/399 dead transitions. [2024-06-28 00:55:28,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 399 transitions, 6831 flow [2024-06-28 00:55:28,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:55:28,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:55:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 166 transitions. [2024-06-28 00:55:28,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3738738738738739 [2024-06-28 00:55:28,448 INFO L175 Difference]: Start difference. First operand has 349 places, 376 transitions, 5969 flow. Second operand 12 states and 166 transitions. [2024-06-28 00:55:28,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 399 transitions, 6831 flow [2024-06-28 00:55:29,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 399 transitions, 6544 flow, removed 121 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:29,546 INFO L231 Difference]: Finished difference. Result has 352 places, 376 transitions, 5745 flow [2024-06-28 00:55:29,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5682, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5745, PETRI_PLACES=352, PETRI_TRANSITIONS=376} [2024-06-28 00:55:29,547 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-28 00:55:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 376 transitions, 5745 flow [2024-06-28 00:55:29,547 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 00:55:29,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:29,547 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 00:55:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 00:55:29,548 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 00:55:29,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 681229124, now seen corresponding path program 12 times [2024-06-28 00:55:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:29,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199152404] [2024-06-28 00:55:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:30,604 INFO 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 00:55:30,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:30,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199152404] [2024-06-28 00:55:30,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199152404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:30,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:30,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:30,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186213143] [2024-06-28 00:55:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:30,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:30,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:30,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:30,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 376 transitions, 5745 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 00:55:30,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:30,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:30,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:31,598 INFO L124 PetriNetUnfolderBase]: 1900/3433 cut-off events. [2024-06-28 00:55:31,599 INFO L125 PetriNetUnfolderBase]: For 143578/143578 co-relation queries the response was YES. [2024-06-28 00:55:31,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22958 conditions, 3433 events. 1900/3433 cut-off events. For 143578/143578 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21345 event pairs, 543 based on Foata normal form. 2/3244 useless extension candidates. Maximal degree in co-relation 22783. Up to 3118 conditions per place. [2024-06-28 00:55:31,641 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 364 selfloop transitions, 25 changer transitions 0/396 dead transitions. [2024-06-28 00:55:31,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 396 transitions, 6597 flow [2024-06-28 00:55:31,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:55:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:55:31,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-28 00:55:31,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808353808353808 [2024-06-28 00:55:31,643 INFO L175 Difference]: Start difference. First operand has 352 places, 376 transitions, 5745 flow. Second operand 11 states and 155 transitions. [2024-06-28 00:55:31,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 396 transitions, 6597 flow [2024-06-28 00:55:32,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 396 transitions, 6514 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-28 00:55:32,586 INFO L231 Difference]: Finished difference. Result has 351 places, 376 transitions, 5720 flow [2024-06-28 00:55:32,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5662, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5720, PETRI_PLACES=351, PETRI_TRANSITIONS=376} [2024-06-28 00:55:32,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-28 00:55:32,587 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 376 transitions, 5720 flow [2024-06-28 00:55:32,587 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 00:55:32,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:32,587 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 00:55:32,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 00:55:32,587 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 00:55:32,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:32,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1144985408, now seen corresponding path program 15 times [2024-06-28 00:55:32,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:32,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630972648] [2024-06-28 00:55:32,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:32,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:33,371 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 00:55:33,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:33,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630972648] [2024-06-28 00:55:33,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630972648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:33,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:33,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:55:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65638163] [2024-06-28 00:55:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:33,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:55:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:33,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:55:33,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:55:33,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 376 transitions, 5720 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 00:55:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:34,456 INFO L124 PetriNetUnfolderBase]: 1921/3475 cut-off events. [2024-06-28 00:55:34,456 INFO L125 PetriNetUnfolderBase]: For 136423/136423 co-relation queries the response was YES. [2024-06-28 00:55:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23014 conditions, 3475 events. 1921/3475 cut-off events. For 136423/136423 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 21764 event pairs, 469 based on Foata normal form. 2/3282 useless extension candidates. Maximal degree in co-relation 22839. Up to 2928 conditions per place. [2024-06-28 00:55:34,500 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 313 selfloop transitions, 93 changer transitions 0/413 dead transitions. [2024-06-28 00:55:34,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 413 transitions, 6911 flow [2024-06-28 00:55:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:34,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:55:34,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 00:55:34,502 INFO L175 Difference]: Start difference. First operand has 351 places, 376 transitions, 5720 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:55:34,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 413 transitions, 6911 flow [2024-06-28 00:55:35,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 413 transitions, 6860 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:55:35,436 INFO L231 Difference]: Finished difference. Result has 353 places, 389 transitions, 6198 flow [2024-06-28 00:55:35,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5669, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6198, PETRI_PLACES=353, PETRI_TRANSITIONS=389} [2024-06-28 00:55:35,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-28 00:55:35,437 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 389 transitions, 6198 flow [2024-06-28 00:55:35,437 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 00:55:35,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:35,437 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 00:55:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 00:55:35,437 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 00:55:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 194460651, now seen corresponding path program 1 times [2024-06-28 00:55:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:35,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601330894] [2024-06-28 00:55:35,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:35,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:36,477 INFO 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 00:55:36,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:36,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601330894] [2024-06-28 00:55:36,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601330894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:36,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:36,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:36,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712178761] [2024-06-28 00:55:36,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:36,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:36,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:36,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:36,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:36,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:36,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 389 transitions, 6198 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 00:55:36,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:36,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:36,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:37,636 INFO L124 PetriNetUnfolderBase]: 1945/3514 cut-off events. [2024-06-28 00:55:37,637 INFO L125 PetriNetUnfolderBase]: For 142440/142440 co-relation queries the response was YES. [2024-06-28 00:55:37,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23944 conditions, 3514 events. 1945/3514 cut-off events. For 142440/142440 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 21991 event pairs, 342 based on Foata normal form. 2/3340 useless extension candidates. Maximal degree in co-relation 23767. Up to 2816 conditions per place. [2024-06-28 00:55:37,678 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 359 selfloop transitions, 60 changer transitions 0/426 dead transitions. [2024-06-28 00:55:37,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 426 transitions, 7344 flow [2024-06-28 00:55:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:37,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:37,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:55:37,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 00:55:37,680 INFO L175 Difference]: Start difference. First operand has 353 places, 389 transitions, 6198 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:55:37,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 426 transitions, 7344 flow [2024-06-28 00:55:38,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 426 transitions, 7053 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:38,699 INFO L231 Difference]: Finished difference. Result has 357 places, 391 transitions, 6130 flow [2024-06-28 00:55:38,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6130, PETRI_PLACES=357, PETRI_TRANSITIONS=391} [2024-06-28 00:55:38,699 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 00:55:38,700 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 391 transitions, 6130 flow [2024-06-28 00:55:38,700 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 00:55:38,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:38,700 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 00:55:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 00:55:38,700 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 00:55:38,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:38,702 INFO L85 PathProgramCache]: Analyzing trace with hash -763325201, now seen corresponding path program 2 times [2024-06-28 00:55:38,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:38,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686814049] [2024-06-28 00:55:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:39,774 INFO 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 00:55:39,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:39,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686814049] [2024-06-28 00:55:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686814049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:39,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:39,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124536239] [2024-06-28 00:55:39,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:39,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:39,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:39,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 391 transitions, 6130 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 00:55:39,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:39,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:40,885 INFO L124 PetriNetUnfolderBase]: 1969/3564 cut-off events. [2024-06-28 00:55:40,885 INFO L125 PetriNetUnfolderBase]: For 144222/144222 co-relation queries the response was YES. [2024-06-28 00:55:40,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24220 conditions, 3564 events. 1969/3564 cut-off events. For 144222/144222 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22439 event pairs, 445 based on Foata normal form. 2/3373 useless extension candidates. Maximal degree in co-relation 24041. Up to 2874 conditions per place. [2024-06-28 00:55:40,933 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 331 selfloop transitions, 89 changer transitions 0/427 dead transitions. [2024-06-28 00:55:40,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 427 transitions, 7297 flow [2024-06-28 00:55:40,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:40,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:55:40,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:55:40,935 INFO L175 Difference]: Start difference. First operand has 357 places, 391 transitions, 6130 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:55:40,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 427 transitions, 7297 flow [2024-06-28 00:55:42,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 427 transitions, 7102 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:42,067 INFO L231 Difference]: Finished difference. Result has 361 places, 394 transitions, 6316 flow [2024-06-28 00:55:42,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5935, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6316, PETRI_PLACES=361, PETRI_TRANSITIONS=394} [2024-06-28 00:55:42,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 00:55:42,068 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 394 transitions, 6316 flow [2024-06-28 00:55:42,068 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 00:55:42,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:42,068 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 00:55:42,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 00:55:42,069 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 00:55:42,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1802774251, now seen corresponding path program 3 times [2024-06-28 00:55:42,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:42,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664729354] [2024-06-28 00:55:42,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:42,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:43,033 INFO 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 00:55:43,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:43,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664729354] [2024-06-28 00:55:43,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664729354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:43,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:43,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:43,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132523952] [2024-06-28 00:55:43,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:43,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:43,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:43,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:43,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:43,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:43,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 394 transitions, 6316 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 00:55:43,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:43,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:43,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:44,194 INFO L124 PetriNetUnfolderBase]: 1989/3606 cut-off events. [2024-06-28 00:55:44,194 INFO L125 PetriNetUnfolderBase]: For 151246/151246 co-relation queries the response was YES. [2024-06-28 00:55:44,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24544 conditions, 3606 events. 1989/3606 cut-off events. For 151246/151246 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 22787 event pairs, 485 based on Foata normal form. 2/3409 useless extension candidates. Maximal degree in co-relation 24363. Up to 3015 conditions per place. [2024-06-28 00:55:44,237 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 320 selfloop transitions, 96 changer transitions 0/423 dead transitions. [2024-06-28 00:55:44,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 423 transitions, 7401 flow [2024-06-28 00:55:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:55:44,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 00:55:44,239 INFO L175 Difference]: Start difference. First operand has 361 places, 394 transitions, 6316 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:55:44,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 423 transitions, 7401 flow [2024-06-28 00:55:45,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 423 transitions, 7062 flow, removed 87 selfloop flow, removed 7 redundant places. [2024-06-28 00:55:45,387 INFO L231 Difference]: Finished difference. Result has 364 places, 395 transitions, 6215 flow [2024-06-28 00:55:45,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5977, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6215, PETRI_PLACES=364, PETRI_TRANSITIONS=395} [2024-06-28 00:55:45,388 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 323 predicate places. [2024-06-28 00:55:45,388 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 395 transitions, 6215 flow [2024-06-28 00:55:45,388 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 00:55:45,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:45,389 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 00:55:45,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 00:55:45,389 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 00:55:45,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:45,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1802774499, now seen corresponding path program 1 times [2024-06-28 00:55:45,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:45,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316776202] [2024-06-28 00:55:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:45,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:47,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:55:47,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:47,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316776202] [2024-06-28 00:55:47,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316776202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:47,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:47,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:47,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074021489] [2024-06-28 00:55:47,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:47,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:47,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:47,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:47,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:47,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:47,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 395 transitions, 6215 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 00:55:47,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:47,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:47,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:48,616 INFO L124 PetriNetUnfolderBase]: 1987/3603 cut-off events. [2024-06-28 00:55:48,617 INFO L125 PetriNetUnfolderBase]: For 136737/136737 co-relation queries the response was YES. [2024-06-28 00:55:48,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24089 conditions, 3603 events. 1987/3603 cut-off events. For 136737/136737 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 22737 event pairs, 484 based on Foata normal form. 1/3403 useless extension candidates. Maximal degree in co-relation 23907. Up to 3037 conditions per place. [2024-06-28 00:55:48,661 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 313 selfloop transitions, 99 changer transitions 0/419 dead transitions. [2024-06-28 00:55:48,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 419 transitions, 7154 flow [2024-06-28 00:55:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:48,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:48,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:55:48,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 00:55:48,662 INFO L175 Difference]: Start difference. First operand has 364 places, 395 transitions, 6215 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:55:48,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 419 transitions, 7154 flow [2024-06-28 00:55:49,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 419 transitions, 6924 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:49,591 INFO L231 Difference]: Finished difference. Result has 366 places, 395 transitions, 6192 flow [2024-06-28 00:55:49,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5985, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6192, PETRI_PLACES=366, PETRI_TRANSITIONS=395} [2024-06-28 00:55:49,591 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-28 00:55:49,592 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 395 transitions, 6192 flow [2024-06-28 00:55:49,592 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 00:55:49,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:49,592 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 00:55:49,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 00:55:49,592 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 00:55:49,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:49,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1802767741, now seen corresponding path program 4 times [2024-06-28 00:55:49,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:49,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922501020] [2024-06-28 00:55:49,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:49,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:50,696 INFO 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 00:55:50,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:50,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922501020] [2024-06-28 00:55:50,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922501020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202048084] [2024-06-28 00:55:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:50,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:50,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:50,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:50,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:50,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 395 transitions, 6192 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 00:55:50,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:50,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:50,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:51,987 INFO L124 PetriNetUnfolderBase]: 2011/3659 cut-off events. [2024-06-28 00:55:51,988 INFO L125 PetriNetUnfolderBase]: For 146587/146587 co-relation queries the response was YES. [2024-06-28 00:55:52,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24491 conditions, 3659 events. 2011/3659 cut-off events. For 146587/146587 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23262 event pairs, 486 based on Foata normal form. 2/3459 useless extension candidates. Maximal degree in co-relation 24308. Up to 2986 conditions per place. [2024-06-28 00:55:52,025 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 327 selfloop transitions, 95 changer transitions 0/429 dead transitions. [2024-06-28 00:55:52,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 429 transitions, 7451 flow [2024-06-28 00:55:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:52,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:55:52,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:55:52,026 INFO L175 Difference]: Start difference. First operand has 366 places, 395 transitions, 6192 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:55:52,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 429 transitions, 7451 flow [2024-06-28 00:55:52,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 429 transitions, 7182 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 00:55:52,999 INFO L231 Difference]: Finished difference. Result has 368 places, 397 transitions, 6232 flow [2024-06-28 00:55:53,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5925, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6232, PETRI_PLACES=368, PETRI_TRANSITIONS=397} [2024-06-28 00:55:53,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-28 00:55:53,000 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 397 transitions, 6232 flow [2024-06-28 00:55:53,000 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 00:55:53,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:53,001 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 00:55:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 00:55:53,001 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 00:55:53,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:53,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1798126111, now seen corresponding path program 5 times [2024-06-28 00:55:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:53,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864389423] [2024-06-28 00:55:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:54,140 INFO 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 00:55:54,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:54,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864389423] [2024-06-28 00:55:54,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864389423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:54,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:54,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:54,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716016966] [2024-06-28 00:55:54,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:54,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:54,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:54,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:54,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:54,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:54,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 397 transitions, 6232 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 00:55:54,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:54,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:54,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:55,455 INFO L124 PetriNetUnfolderBase]: 2035/3715 cut-off events. [2024-06-28 00:55:55,455 INFO L125 PetriNetUnfolderBase]: For 153713/153713 co-relation queries the response was YES. [2024-06-28 00:55:55,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25093 conditions, 3715 events. 2035/3715 cut-off events. For 153713/153713 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 23733 event pairs, 500 based on Foata normal form. 2/3511 useless extension candidates. Maximal degree in co-relation 24908. Up to 3115 conditions per place. [2024-06-28 00:55:55,501 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 69 changer transitions 0/434 dead transitions. [2024-06-28 00:55:55,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 434 transitions, 7421 flow [2024-06-28 00:55:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:55:55,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:55:55,502 INFO L175 Difference]: Start difference. First operand has 368 places, 397 transitions, 6232 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:55:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 434 transitions, 7421 flow [2024-06-28 00:55:56,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 434 transitions, 7193 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 00:55:56,620 INFO L231 Difference]: Finished difference. Result has 371 places, 399 transitions, 6257 flow [2024-06-28 00:55:56,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6004, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6257, PETRI_PLACES=371, PETRI_TRANSITIONS=399} [2024-06-28 00:55:56,621 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-28 00:55:56,621 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 399 transitions, 6257 flow [2024-06-28 00:55:56,621 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 00:55:56,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:55:56,622 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 00:55:56,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 00:55:56,622 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 00:55:56,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:55:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash -395934395, now seen corresponding path program 6 times [2024-06-28 00:55:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:55:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177359800] [2024-06-28 00:55:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:55:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:55:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:55:57,674 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 00:55:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:55:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177359800] [2024-06-28 00:55:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177359800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:55:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:55:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:55:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609738778] [2024-06-28 00:55:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:55:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:55:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:55:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:55:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:55:57,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:55:57,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 399 transitions, 6257 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 00:55:57,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:55:57,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:55:57,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:55:58,942 INFO L124 PetriNetUnfolderBase]: 2059/3771 cut-off events. [2024-06-28 00:55:58,943 INFO L125 PetriNetUnfolderBase]: For 159907/159907 co-relation queries the response was YES. [2024-06-28 00:55:58,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25477 conditions, 3771 events. 2059/3771 cut-off events. For 159907/159907 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24298 event pairs, 409 based on Foata normal form. 2/3587 useless extension candidates. Maximal degree in co-relation 25291. Up to 3116 conditions per place. [2024-06-28 00:55:58,988 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 358 selfloop transitions, 74 changer transitions 0/439 dead transitions. [2024-06-28 00:55:58,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 439 transitions, 7482 flow [2024-06-28 00:55:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:55:58,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:55:58,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 00:55:58,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 00:55:58,989 INFO L175 Difference]: Start difference. First operand has 371 places, 399 transitions, 6257 flow. Second operand 10 states and 164 transitions. [2024-06-28 00:55:58,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 439 transitions, 7482 flow [2024-06-28 00:56:00,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 439 transitions, 7259 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:00,123 INFO L231 Difference]: Finished difference. Result has 375 places, 402 transitions, 6394 flow [2024-06-28 00:56:00,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6394, PETRI_PLACES=375, PETRI_TRANSITIONS=402} [2024-06-28 00:56:00,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-28 00:56:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 402 transitions, 6394 flow [2024-06-28 00:56:00,123 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 00:56:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:00,124 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 00:56:00,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 00:56:00,124 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 00:56:00,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash -391286007, now seen corresponding path program 2 times [2024-06-28 00:56:00,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:00,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278944907] [2024-06-28 00:56:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:00,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:02,328 INFO 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 00:56:02,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:02,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278944907] [2024-06-28 00:56:02,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278944907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30711517] [2024-06-28 00:56:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:02,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:02,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:02,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:02,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 402 transitions, 6394 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 00:56:02,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:02,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:02,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:03,482 INFO L124 PetriNetUnfolderBase]: 2057/3768 cut-off events. [2024-06-28 00:56:03,482 INFO L125 PetriNetUnfolderBase]: For 148280/148280 co-relation queries the response was YES. [2024-06-28 00:56:03,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25114 conditions, 3768 events. 2057/3768 cut-off events. For 148280/148280 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24280 event pairs, 538 based on Foata normal form. 1/3558 useless extension candidates. Maximal degree in co-relation 24926. Up to 3208 conditions per place. [2024-06-28 00:56:03,532 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 329 selfloop transitions, 93 changer transitions 0/429 dead transitions. [2024-06-28 00:56:03,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 429 transitions, 7375 flow [2024-06-28 00:56:03,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:56:03,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:56:03,533 INFO L175 Difference]: Start difference. First operand has 375 places, 402 transitions, 6394 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:56:03,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 429 transitions, 7375 flow [2024-06-28 00:56:04,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 429 transitions, 7043 flow, removed 96 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:04,652 INFO L231 Difference]: Finished difference. Result has 378 places, 402 transitions, 6256 flow [2024-06-28 00:56:04,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6062, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6256, PETRI_PLACES=378, PETRI_TRANSITIONS=402} [2024-06-28 00:56:04,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 00:56:04,653 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 402 transitions, 6256 flow [2024-06-28 00:56:04,653 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 00:56:04,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:04,653 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 00:56:04,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 00:56:04,654 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 00:56:04,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash -391286255, now seen corresponding path program 7 times [2024-06-28 00:56:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625489054] [2024-06-28 00:56:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:04,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:04,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:05,778 INFO 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 00:56:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:05,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625489054] [2024-06-28 00:56:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625489054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:05,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:05,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:05,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349945336] [2024-06-28 00:56:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:05,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:05,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:05,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:05,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 402 transitions, 6256 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 00:56:05,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:05,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:05,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:07,180 INFO L124 PetriNetUnfolderBase]: 2077/3810 cut-off events. [2024-06-28 00:56:07,180 INFO L125 PetriNetUnfolderBase]: For 153236/153236 co-relation queries the response was YES. [2024-06-28 00:56:07,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25176 conditions, 3810 events. 2077/3810 cut-off events. For 153236/153236 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 24649 event pairs, 548 based on Foata normal form. 2/3600 useless extension candidates. Maximal degree in co-relation 24987. Up to 3234 conditions per place. [2024-06-28 00:56:07,219 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 337 selfloop transitions, 90 changer transitions 0/434 dead transitions. [2024-06-28 00:56:07,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 434 transitions, 7393 flow [2024-06-28 00:56:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:07,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:56:07,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 00:56:07,220 INFO L175 Difference]: Start difference. First operand has 378 places, 402 transitions, 6256 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:56:07,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 434 transitions, 7393 flow [2024-06-28 00:56:08,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 434 transitions, 6909 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-28 00:56:08,333 INFO L231 Difference]: Finished difference. Result has 376 places, 403 transitions, 6003 flow [2024-06-28 00:56:08,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5772, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6003, PETRI_PLACES=376, PETRI_TRANSITIONS=403} [2024-06-28 00:56:08,334 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-28 00:56:08,334 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 403 transitions, 6003 flow [2024-06-28 00:56:08,334 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 00:56:08,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:08,334 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 00:56:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 00:56:08,334 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 00:56:08,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -391292765, now seen corresponding path program 8 times [2024-06-28 00:56:08,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:08,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395429991] [2024-06-28 00:56:08,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:08,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:09,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:56:09,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:09,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395429991] [2024-06-28 00:56:09,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395429991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:09,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:09,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:09,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141537190] [2024-06-28 00:56:09,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:09,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:09,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:09,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:09,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 403 transitions, 6003 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 00:56:09,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:09,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:09,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:10,567 INFO L124 PetriNetUnfolderBase]: 2101/3866 cut-off events. [2024-06-28 00:56:10,567 INFO L125 PetriNetUnfolderBase]: For 158477/158477 co-relation queries the response was YES. [2024-06-28 00:56:10,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25389 conditions, 3866 events. 2101/3866 cut-off events. For 158477/158477 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25189 event pairs, 550 based on Foata normal form. 2/3653 useless extension candidates. Maximal degree in co-relation 25201. Up to 3208 conditions per place. [2024-06-28 00:56:10,612 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 344 selfloop transitions, 89 changer transitions 0/440 dead transitions. [2024-06-28 00:56:10,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 440 transitions, 7322 flow [2024-06-28 00:56:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:56:10,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 00:56:10,613 INFO L175 Difference]: Start difference. First operand has 376 places, 403 transitions, 6003 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:56:10,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 440 transitions, 7322 flow [2024-06-28 00:56:11,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 440 transitions, 7100 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:11,801 INFO L231 Difference]: Finished difference. Result has 378 places, 405 transitions, 6089 flow [2024-06-28 00:56:11,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6089, PETRI_PLACES=378, PETRI_TRANSITIONS=405} [2024-06-28 00:56:11,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-28 00:56:11,805 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 405 transitions, 6089 flow [2024-06-28 00:56:11,805 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 00:56:11,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:11,805 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 00:56:11,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 00:56:11,805 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 00:56:11,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash -391465745, now seen corresponding path program 9 times [2024-06-28 00:56:11,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:11,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833692533] [2024-06-28 00:56:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:13,359 INFO 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 00:56:13,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:13,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833692533] [2024-06-28 00:56:13,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833692533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130212925] [2024-06-28 00:56:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:13,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:13,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:13,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:13,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 405 transitions, 6089 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 00:56:13,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:13,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:13,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:14,667 INFO L124 PetriNetUnfolderBase]: 2125/3917 cut-off events. [2024-06-28 00:56:14,667 INFO L125 PetriNetUnfolderBase]: For 164588/164588 co-relation queries the response was YES. [2024-06-28 00:56:14,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25877 conditions, 3917 events. 2125/3917 cut-off events. For 164588/164588 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25676 event pairs, 548 based on Foata normal form. 2/3700 useless extension candidates. Maximal degree in co-relation 25688. Up to 3296 conditions per place. [2024-06-28 00:56:14,718 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 354 selfloop transitions, 83 changer transitions 0/444 dead transitions. [2024-06-28 00:56:14,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 444 transitions, 7338 flow [2024-06-28 00:56:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 00:56:14,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 00:56:14,719 INFO L175 Difference]: Start difference. First operand has 378 places, 405 transitions, 6089 flow. Second operand 10 states and 162 transitions. [2024-06-28 00:56:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 444 transitions, 7338 flow [2024-06-28 00:56:15,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 444 transitions, 7118 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:15,915 INFO L231 Difference]: Finished difference. Result has 382 places, 408 transitions, 6259 flow [2024-06-28 00:56:15,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5869, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6259, PETRI_PLACES=382, PETRI_TRANSITIONS=408} [2024-06-28 00:56:15,916 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-28 00:56:15,916 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 408 transitions, 6259 flow [2024-06-28 00:56:15,916 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 00:56:15,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:15,916 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 00:56:15,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 00:56:15,917 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 00:56:15,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash -218556797, now seen corresponding path program 1 times [2024-06-28 00:56:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812866627] [2024-06-28 00:56:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:15,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:17,853 INFO 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 00:56:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812866627] [2024-06-28 00:56:17,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812866627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:17,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:17,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:17,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976073285] [2024-06-28 00:56:17,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:17,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:17,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:17,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:17,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:17,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 408 transitions, 6259 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 00:56:17,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:17,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:17,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:19,358 INFO L124 PetriNetUnfolderBase]: 2209/4076 cut-off events. [2024-06-28 00:56:19,358 INFO L125 PetriNetUnfolderBase]: For 223567/223567 co-relation queries the response was YES. [2024-06-28 00:56:19,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26868 conditions, 4076 events. 2209/4076 cut-off events. For 223567/223567 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 26959 event pairs, 598 based on Foata normal form. 10/3864 useless extension candidates. Maximal degree in co-relation 26677. Up to 3372 conditions per place. [2024-06-28 00:56:19,400 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 351 selfloop transitions, 84 changer transitions 0/442 dead transitions. [2024-06-28 00:56:19,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 442 transitions, 7409 flow [2024-06-28 00:56:19,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:56:19,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-28 00:56:19,401 INFO L175 Difference]: Start difference. First operand has 382 places, 408 transitions, 6259 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:56:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 442 transitions, 7409 flow [2024-06-28 00:56:20,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 442 transitions, 7051 flow, removed 100 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:20,678 INFO L231 Difference]: Finished difference. Result has 385 places, 410 transitions, 6186 flow [2024-06-28 00:56:20,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5901, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6186, PETRI_PLACES=385, PETRI_TRANSITIONS=410} [2024-06-28 00:56:20,678 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 344 predicate places. [2024-06-28 00:56:20,679 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 410 transitions, 6186 flow [2024-06-28 00:56:20,679 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 00:56:20,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:20,679 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 00:56:20,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 00:56:20,679 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 00:56:20,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:20,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1492101939, now seen corresponding path program 10 times [2024-06-28 00:56:20,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:20,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937167451] [2024-06-28 00:56:20,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:20,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:22,219 INFO 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 00:56:22,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:22,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937167451] [2024-06-28 00:56:22,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937167451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:22,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:22,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:22,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339037658] [2024-06-28 00:56:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:22,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:22,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:22,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:22,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:22,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:22,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 410 transitions, 6186 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 00:56:22,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:22,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:22,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:23,570 INFO L124 PetriNetUnfolderBase]: 2225/4112 cut-off events. [2024-06-28 00:56:23,570 INFO L125 PetriNetUnfolderBase]: For 178058/178058 co-relation queries the response was YES. [2024-06-28 00:56:23,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26886 conditions, 4112 events. 2225/4112 cut-off events. For 178058/178058 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 27305 event pairs, 571 based on Foata normal form. 2/3888 useless extension candidates. Maximal degree in co-relation 26694. Up to 3476 conditions per place. [2024-06-28 00:56:23,622 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 340 selfloop transitions, 90 changer transitions 0/437 dead transitions. [2024-06-28 00:56:23,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 437 transitions, 7304 flow [2024-06-28 00:56:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 00:56:23,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-28 00:56:23,624 INFO L175 Difference]: Start difference. First operand has 385 places, 410 transitions, 6186 flow. Second operand 10 states and 152 transitions. [2024-06-28 00:56:23,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 437 transitions, 7304 flow [2024-06-28 00:56:24,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 437 transitions, 7076 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:24,855 INFO L231 Difference]: Finished difference. Result has 388 places, 412 transitions, 6293 flow [2024-06-28 00:56:24,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5958, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6293, PETRI_PLACES=388, PETRI_TRANSITIONS=412} [2024-06-28 00:56:24,855 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 00:56:24,855 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 412 transitions, 6293 flow [2024-06-28 00:56:24,856 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 00:56:24,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:24,856 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 00:56:24,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 00:56:24,856 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 00:56:24,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:24,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1492095429, now seen corresponding path program 11 times [2024-06-28 00:56:24,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254582653] [2024-06-28 00:56:24,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:26,131 INFO 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 00:56:26,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:26,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254582653] [2024-06-28 00:56:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254582653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:26,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263269860] [2024-06-28 00:56:26,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:26,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:26,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:26,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:26,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:26,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 412 transitions, 6293 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 00:56:26,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:26,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:26,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:27,470 INFO L124 PetriNetUnfolderBase]: 2249/4163 cut-off events. [2024-06-28 00:56:27,471 INFO L125 PetriNetUnfolderBase]: For 179861/179861 co-relation queries the response was YES. [2024-06-28 00:56:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27254 conditions, 4163 events. 2249/4163 cut-off events. For 179861/179861 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27814 event pairs, 567 based on Foata normal form. 2/3936 useless extension candidates. Maximal degree in co-relation 27061. Up to 3493 conditions per place. [2024-06-28 00:56:27,514 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 348 selfloop transitions, 89 changer transitions 0/444 dead transitions. [2024-06-28 00:56:27,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 444 transitions, 7511 flow [2024-06-28 00:56:27,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:27,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 00:56:27,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 00:56:27,515 INFO L175 Difference]: Start difference. First operand has 388 places, 412 transitions, 6293 flow. Second operand 10 states and 156 transitions. [2024-06-28 00:56:27,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 444 transitions, 7511 flow [2024-06-28 00:56:28,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 444 transitions, 7192 flow, removed 71 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:28,767 INFO L231 Difference]: Finished difference. Result has 391 places, 414 transitions, 6288 flow [2024-06-28 00:56:28,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5974, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6288, PETRI_PLACES=391, PETRI_TRANSITIONS=414} [2024-06-28 00:56:28,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 350 predicate places. [2024-06-28 00:56:28,768 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 414 transitions, 6288 flow [2024-06-28 00:56:28,768 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 00:56:28,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:28,768 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 00:56:28,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 00:56:28,769 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 00:56:28,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1728277299, now seen corresponding path program 12 times [2024-06-28 00:56:28,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:28,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243285002] [2024-06-28 00:56:28,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:28,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:30,300 INFO 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 00:56:30,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:30,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243285002] [2024-06-28 00:56:30,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243285002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:30,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:30,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938342478] [2024-06-28 00:56:30,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:30,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:30,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:30,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:30,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:30,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 414 transitions, 6288 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 00:56:30,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:30,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:31,789 INFO L124 PetriNetUnfolderBase]: 2269/4205 cut-off events. [2024-06-28 00:56:31,789 INFO L125 PetriNetUnfolderBase]: For 184246/184246 co-relation queries the response was YES. [2024-06-28 00:56:31,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27559 conditions, 4205 events. 2269/4205 cut-off events. For 184246/184246 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 28157 event pairs, 574 based on Foata normal form. 2/3976 useless extension candidates. Maximal degree in co-relation 27364. Up to 3353 conditions per place. [2024-06-28 00:56:31,843 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 321 selfloop transitions, 114 changer transitions 0/442 dead transitions. [2024-06-28 00:56:31,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 442 transitions, 7424 flow [2024-06-28 00:56:31,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 00:56:31,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 00:56:31,844 INFO L175 Difference]: Start difference. First operand has 391 places, 414 transitions, 6288 flow. Second operand 10 states and 155 transitions. [2024-06-28 00:56:31,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 442 transitions, 7424 flow [2024-06-28 00:56:33,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 442 transitions, 7148 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:33,177 INFO L231 Difference]: Finished difference. Result has 394 places, 415 transitions, 6300 flow [2024-06-28 00:56:33,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6012, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6300, PETRI_PLACES=394, PETRI_TRANSITIONS=415} [2024-06-28 00:56:33,178 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 353 predicate places. [2024-06-28 00:56:33,178 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 415 transitions, 6300 flow [2024-06-28 00:56:33,178 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 00:56:33,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:33,179 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 00:56:33,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 00:56:33,179 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 00:56:33,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:33,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1728574527, now seen corresponding path program 2 times [2024-06-28 00:56:33,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:33,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487834399] [2024-06-28 00:56:33,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:33,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:34,752 INFO 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 00:56:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487834399] [2024-06-28 00:56:34,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487834399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:34,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:34,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:34,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896253500] [2024-06-28 00:56:34,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:34,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:34,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:34,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 415 transitions, 6300 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 00:56:34,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:34,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:34,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:36,248 INFO L124 PetriNetUnfolderBase]: 2337/4336 cut-off events. [2024-06-28 00:56:36,248 INFO L125 PetriNetUnfolderBase]: For 240326/240326 co-relation queries the response was YES. [2024-06-28 00:56:36,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28288 conditions, 4336 events. 2337/4336 cut-off events. For 240326/240326 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 29308 event pairs, 605 based on Foata normal form. 10/4115 useless extension candidates. Maximal degree in co-relation 28092. Up to 3245 conditions per place. [2024-06-28 00:56:36,303 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 316 selfloop transitions, 129 changer transitions 0/452 dead transitions. [2024-06-28 00:56:36,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 452 transitions, 7527 flow [2024-06-28 00:56:36,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:56:36,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:56:36,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-28 00:56:36,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 00:56:36,305 INFO L175 Difference]: Start difference. First operand has 394 places, 415 transitions, 6300 flow. Second operand 12 states and 185 transitions. [2024-06-28 00:56:36,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 452 transitions, 7527 flow [2024-06-28 00:56:37,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 452 transitions, 7216 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 00:56:37,798 INFO L231 Difference]: Finished difference. Result has 398 places, 416 transitions, 6398 flow [2024-06-28 00:56:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6398, PETRI_PLACES=398, PETRI_TRANSITIONS=416} [2024-06-28 00:56:37,798 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 00:56:37,798 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 416 transitions, 6398 flow [2024-06-28 00:56:37,799 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 00:56:37,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:37,799 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 00:56:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 00:56:37,799 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 00:56:37,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1491922449, now seen corresponding path program 13 times [2024-06-28 00:56:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:37,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341843700] [2024-06-28 00:56:37,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:37,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:38,925 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 00:56:38,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:38,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341843700] [2024-06-28 00:56:38,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341843700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:38,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:38,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745719943] [2024-06-28 00:56:38,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:38,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:38,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:38,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:39,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:39,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 416 transitions, 6398 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 00:56:39,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:39,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:39,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:40,269 INFO L124 PetriNetUnfolderBase]: 2361/4386 cut-off events. [2024-06-28 00:56:40,269 INFO L125 PetriNetUnfolderBase]: For 200556/200556 co-relation queries the response was YES. [2024-06-28 00:56:40,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28888 conditions, 4386 events. 2361/4386 cut-off events. For 200556/200556 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 29767 event pairs, 607 based on Foata normal form. 2/4154 useless extension candidates. Maximal degree in co-relation 28691. Up to 3688 conditions per place. [2024-06-28 00:56:40,327 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 358 selfloop transitions, 86 changer transitions 0/451 dead transitions. [2024-06-28 00:56:40,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 451 transitions, 7648 flow [2024-06-28 00:56:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 00:56:40,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-28 00:56:40,328 INFO L175 Difference]: Start difference. First operand has 398 places, 416 transitions, 6398 flow. Second operand 10 states and 159 transitions. [2024-06-28 00:56:40,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 451 transitions, 7648 flow [2024-06-28 00:56:41,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 451 transitions, 7320 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-28 00:56:41,922 INFO L231 Difference]: Finished difference. Result has 399 places, 419 transitions, 6486 flow [2024-06-28 00:56:41,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6070, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6486, PETRI_PLACES=399, PETRI_TRANSITIONS=419} [2024-06-28 00:56:41,923 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-28 00:56:41,923 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 419 transitions, 6486 flow [2024-06-28 00:56:41,923 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 00:56:41,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:41,923 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 00:56:41,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 00:56:41,924 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 00:56:41,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:41,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1498597617, now seen corresponding path program 3 times [2024-06-28 00:56:41,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:41,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626932196] [2024-06-28 00:56:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:41,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:43,278 INFO 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 00:56:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:43,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626932196] [2024-06-28 00:56:43,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626932196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:43,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:43,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085237611] [2024-06-28 00:56:43,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:43,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:43,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:43,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:43,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 419 transitions, 6486 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 00:56:43,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:43,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:43,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:45,051 INFO L124 PetriNetUnfolderBase]: 2429/4517 cut-off events. [2024-06-28 00:56:45,052 INFO L125 PetriNetUnfolderBase]: For 255117/255117 co-relation queries the response was YES. [2024-06-28 00:56:45,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29392 conditions, 4517 events. 2429/4517 cut-off events. For 255117/255117 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 30945 event pairs, 671 based on Foata normal form. 10/4292 useless extension candidates. Maximal degree in co-relation 29193. Up to 3713 conditions per place. [2024-06-28 00:56:45,108 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 352 selfloop transitions, 93 changer transitions 0/452 dead transitions. [2024-06-28 00:56:45,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 452 transitions, 7644 flow [2024-06-28 00:56:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:45,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 00:56:45,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 00:56:45,110 INFO L175 Difference]: Start difference. First operand has 399 places, 419 transitions, 6486 flow. Second operand 11 states and 169 transitions. [2024-06-28 00:56:45,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 452 transitions, 7644 flow [2024-06-28 00:56:46,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 452 transitions, 7260 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:46,653 INFO L231 Difference]: Finished difference. Result has 403 places, 420 transitions, 6400 flow [2024-06-28 00:56:46,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6400, PETRI_PLACES=403, PETRI_TRANSITIONS=420} [2024-06-28 00:56:46,654 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 362 predicate places. [2024-06-28 00:56:46,654 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 420 transitions, 6400 flow [2024-06-28 00:56:46,654 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 00:56:46,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:46,654 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 00:56:46,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 00:56:46,655 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 00:56:46,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:46,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1728584757, now seen corresponding path program 4 times [2024-06-28 00:56:46,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:46,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502721902] [2024-06-28 00:56:46,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:46,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:48,212 INFO 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 00:56:48,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:48,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502721902] [2024-06-28 00:56:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502721902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:48,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72278402] [2024-06-28 00:56:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:48,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:48,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:48,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:48,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 420 transitions, 6400 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 00:56:48,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:48,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:48,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:49,743 INFO L124 PetriNetUnfolderBase]: 2581/4792 cut-off events. [2024-06-28 00:56:49,744 INFO L125 PetriNetUnfolderBase]: For 344727/344727 co-relation queries the response was YES. [2024-06-28 00:56:49,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32697 conditions, 4792 events. 2581/4792 cut-off events. For 344727/344727 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 33292 event pairs, 683 based on Foata normal form. 8/4576 useless extension candidates. Maximal degree in co-relation 32497. Up to 2881 conditions per place. [2024-06-28 00:56:49,809 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 324 selfloop transitions, 133 changer transitions 0/464 dead transitions. [2024-06-28 00:56:49,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 464 transitions, 8056 flow [2024-06-28 00:56:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:56:49,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:56:49,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 00:56:49,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 00:56:49,811 INFO L175 Difference]: Start difference. First operand has 403 places, 420 transitions, 6400 flow. Second operand 11 states and 178 transitions. [2024-06-28 00:56:49,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 464 transitions, 8056 flow [2024-06-28 00:56:51,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 464 transitions, 7788 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 00:56:51,898 INFO L231 Difference]: Finished difference. Result has 406 places, 423 transitions, 6659 flow [2024-06-28 00:56:51,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6132, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6659, PETRI_PLACES=406, PETRI_TRANSITIONS=423} [2024-06-28 00:56:51,899 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-28 00:56:51,899 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 423 transitions, 6659 flow [2024-06-28 00:56:51,899 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 00:56:51,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:51,899 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 00:56:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 00:56:51,899 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 00:56:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1809653211, now seen corresponding path program 14 times [2024-06-28 00:56:51,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:51,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191319629] [2024-06-28 00:56:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:51,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:53,558 INFO 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 00:56:53,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:53,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191319629] [2024-06-28 00:56:53,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191319629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:53,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:53,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:53,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469715316] [2024-06-28 00:56:53,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:53,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:53,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:53,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:53,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 423 transitions, 6659 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 00:56:53,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:53,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:53,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:55,069 INFO L124 PetriNetUnfolderBase]: 2578/4798 cut-off events. [2024-06-28 00:56:55,070 INFO L125 PetriNetUnfolderBase]: For 288382/288382 co-relation queries the response was YES. [2024-06-28 00:56:55,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32403 conditions, 4798 events. 2578/4798 cut-off events. For 288382/288382 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 33408 event pairs, 762 based on Foata normal form. 2/4565 useless extension candidates. Maximal degree in co-relation 32201. Up to 4029 conditions per place. [2024-06-28 00:56:55,131 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 334 selfloop transitions, 109 changer transitions 0/450 dead transitions. [2024-06-28 00:56:55,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 450 transitions, 7822 flow [2024-06-28 00:56:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:56:55,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:56:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:56:55,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:56:55,133 INFO L175 Difference]: Start difference. First operand has 406 places, 423 transitions, 6659 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:56:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 450 transitions, 7822 flow [2024-06-28 00:56:57,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 450 transitions, 7538 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 00:56:57,293 INFO L231 Difference]: Finished difference. Result has 409 places, 425 transitions, 6767 flow [2024-06-28 00:56:57,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6381, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6767, PETRI_PLACES=409, PETRI_TRANSITIONS=425} [2024-06-28 00:56:57,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-28 00:56:57,293 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 425 transitions, 6767 flow [2024-06-28 00:56:57,294 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 00:56:57,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:56:57,294 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 00:56:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 00:56:57,294 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 00:56:57,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:56:57,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1720242657, now seen corresponding path program 5 times [2024-06-28 00:56:57,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:56:57,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008627694] [2024-06-28 00:56:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:56:57,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:56:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:56:58,343 INFO 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 00:56:58,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:56:58,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008627694] [2024-06-28 00:56:58,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008627694] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:56:58,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:56:58,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:56:58,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610769547] [2024-06-28 00:56:58,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:56:58,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:56:58,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:56:58,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:56:58,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:56:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:56:58,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 425 transitions, 6767 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 00:56:58,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:56:58,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:56:58,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:56:59,909 INFO L124 PetriNetUnfolderBase]: 2608/4855 cut-off events. [2024-06-28 00:56:59,910 INFO L125 PetriNetUnfolderBase]: For 311819/311821 co-relation queries the response was YES. [2024-06-28 00:56:59,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32197 conditions, 4855 events. 2608/4855 cut-off events. For 311819/311821 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 33943 event pairs, 758 based on Foata normal form. 12/4633 useless extension candidates. Maximal degree in co-relation 31993. Up to 3845 conditions per place. [2024-06-28 00:56:59,976 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 344 selfloop transitions, 111 changer transitions 0/462 dead transitions. [2024-06-28 00:56:59,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 462 transitions, 7958 flow [2024-06-28 00:56:59,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:56:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:56:59,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 00:56:59,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-28 00:56:59,977 INFO L175 Difference]: Start difference. First operand has 409 places, 425 transitions, 6767 flow. Second operand 12 states and 187 transitions. [2024-06-28 00:56:59,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 462 transitions, 7958 flow [2024-06-28 00:57:01,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 462 transitions, 7589 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:01,907 INFO L231 Difference]: Finished difference. Result has 413 places, 426 transitions, 6732 flow [2024-06-28 00:57:01,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6398, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6732, PETRI_PLACES=413, PETRI_TRANSITIONS=426} [2024-06-28 00:57:01,908 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 00:57:01,908 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 426 transitions, 6732 flow [2024-06-28 00:57:01,908 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 00:57:01,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:01,908 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 00:57:01,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 00:57:01,909 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 00:57:01,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:01,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1719996579, now seen corresponding path program 15 times [2024-06-28 00:57:01,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:01,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195122115] [2024-06-28 00:57:01,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:01,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:03,021 INFO 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 00:57:03,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:03,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195122115] [2024-06-28 00:57:03,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195122115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:03,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:03,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125806117] [2024-06-28 00:57:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:03,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:03,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:03,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:03,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 426 transitions, 6732 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 00:57:03,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:03,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:03,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:04,580 INFO L124 PetriNetUnfolderBase]: 2636/4933 cut-off events. [2024-06-28 00:57:04,580 INFO L125 PetriNetUnfolderBase]: For 269038/269038 co-relation queries the response was YES. [2024-06-28 00:57:04,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32802 conditions, 4933 events. 2636/4933 cut-off events. For 269038/269038 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 34704 event pairs, 778 based on Foata normal form. 2/4695 useless extension candidates. Maximal degree in co-relation 32597. Up to 3910 conditions per place. [2024-06-28 00:57:04,647 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 341 selfloop transitions, 112 changer transitions 0/460 dead transitions. [2024-06-28 00:57:04,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 460 transitions, 8089 flow [2024-06-28 00:57:04,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-28 00:57:04,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 00:57:04,649 INFO L175 Difference]: Start difference. First operand has 413 places, 426 transitions, 6732 flow. Second operand 10 states and 160 transitions. [2024-06-28 00:57:04,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 460 transitions, 8089 flow [2024-06-28 00:57:07,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 460 transitions, 7742 flow, removed 43 selfloop flow, removed 11 redundant places. [2024-06-28 00:57:07,008 INFO L231 Difference]: Finished difference. Result has 413 places, 429 transitions, 6826 flow [2024-06-28 00:57:07,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6385, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6826, PETRI_PLACES=413, PETRI_TRANSITIONS=429} [2024-06-28 00:57:07,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-28 00:57:07,009 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 429 transitions, 6826 flow [2024-06-28 00:57:07,009 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 00:57:07,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:07,011 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 00:57:07,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 00:57:07,011 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 00:57:07,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:07,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1703603925, now seen corresponding path program 16 times [2024-06-28 00:57:07,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:07,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217765648] [2024-06-28 00:57:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:07,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:07,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:08,213 INFO 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 00:57:08,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:08,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217765648] [2024-06-28 00:57:08,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217765648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:08,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:08,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637255390] [2024-06-28 00:57:08,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:08,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:08,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:08,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:08,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:08,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:08,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 429 transitions, 6826 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 00:57:08,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:08,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:08,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:09,688 INFO L124 PetriNetUnfolderBase]: 2652/4955 cut-off events. [2024-06-28 00:57:09,689 INFO L125 PetriNetUnfolderBase]: For 267124/267126 co-relation queries the response was YES. [2024-06-28 00:57:09,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33052 conditions, 4955 events. 2652/4955 cut-off events. For 267124/267126 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 34866 event pairs, 807 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 32847. Up to 4236 conditions per place. [2024-06-28 00:57:09,754 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 357 selfloop transitions, 91 changer transitions 0/455 dead transitions. [2024-06-28 00:57:09,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 455 transitions, 8006 flow [2024-06-28 00:57:09,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:57:09,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:57:09,758 INFO L175 Difference]: Start difference. First operand has 413 places, 429 transitions, 6826 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:57:09,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 455 transitions, 8006 flow [2024-06-28 00:57:12,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 455 transitions, 7709 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 00:57:12,281 INFO L231 Difference]: Finished difference. Result has 417 places, 431 transitions, 6888 flow [2024-06-28 00:57:12,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6529, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6888, PETRI_PLACES=417, PETRI_TRANSITIONS=431} [2024-06-28 00:57:12,287 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-28 00:57:12,288 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 431 transitions, 6888 flow [2024-06-28 00:57:12,288 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 00:57:12,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:12,289 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 00:57:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 00:57:12,291 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 00:57:12,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1703843493, now seen corresponding path program 6 times [2024-06-28 00:57:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:12,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604644977] [2024-06-28 00:57:12,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:12,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:13,755 INFO 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 00:57:13,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:13,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604644977] [2024-06-28 00:57:13,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604644977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:13,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:13,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:13,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855419505] [2024-06-28 00:57:13,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:13,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:13,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:13,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:13,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:13,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:13,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 431 transitions, 6888 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 00:57:13,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:13,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:13,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:15,682 INFO L124 PetriNetUnfolderBase]: 2720/5086 cut-off events. [2024-06-28 00:57:15,682 INFO L125 PetriNetUnfolderBase]: For 332293/332295 co-relation queries the response was YES. [2024-06-28 00:57:15,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33766 conditions, 5086 events. 2720/5086 cut-off events. For 332293/332295 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 36009 event pairs, 833 based on Foata normal form. 10/4849 useless extension candidates. Maximal degree in co-relation 33559. Up to 4177 conditions per place. [2024-06-28 00:57:15,733 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 357 selfloop transitions, 99 changer transitions 0/463 dead transitions. [2024-06-28 00:57:15,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 463 transitions, 8078 flow [2024-06-28 00:57:15,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:15,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 00:57:15,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 00:57:15,735 INFO L175 Difference]: Start difference. First operand has 417 places, 431 transitions, 6888 flow. Second operand 11 states and 173 transitions. [2024-06-28 00:57:15,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 463 transitions, 8078 flow [2024-06-28 00:57:17,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 463 transitions, 7735 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:17,826 INFO L231 Difference]: Finished difference. Result has 420 places, 432 transitions, 6858 flow [2024-06-28 00:57:17,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6545, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6858, PETRI_PLACES=420, PETRI_TRANSITIONS=432} [2024-06-28 00:57:17,826 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-28 00:57:17,826 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 432 transitions, 6858 flow [2024-06-28 00:57:17,827 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 00:57:17,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:17,827 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 00:57:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 00:57:17,827 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 00:57:17,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:17,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1703597415, now seen corresponding path program 17 times [2024-06-28 00:57:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228425175] [2024-06-28 00:57:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:17,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:19,019 INFO 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 00:57:19,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:19,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228425175] [2024-06-28 00:57:19,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228425175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:19,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:19,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:19,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813554743] [2024-06-28 00:57:19,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:19,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:19,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:19,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:19,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:19,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:19,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 432 transitions, 6858 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 00:57:19,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:19,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:19,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:20,833 INFO L124 PetriNetUnfolderBase]: 2767/5196 cut-off events. [2024-06-28 00:57:20,833 INFO L125 PetriNetUnfolderBase]: For 308800/308802 co-relation queries the response was YES. [2024-06-28 00:57:20,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35292 conditions, 5196 events. 2767/5196 cut-off events. For 308800/308802 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 37149 event pairs, 857 based on Foata normal form. 2/4943 useless extension candidates. Maximal degree in co-relation 35084. Up to 4332 conditions per place. [2024-06-28 00:57:20,903 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 362 selfloop transitions, 97 changer transitions 0/466 dead transitions. [2024-06-28 00:57:20,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 466 transitions, 8570 flow [2024-06-28 00:57:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:20,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 00:57:20,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-28 00:57:20,904 INFO L175 Difference]: Start difference. First operand has 420 places, 432 transitions, 6858 flow. Second operand 10 states and 161 transitions. [2024-06-28 00:57:20,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 466 transitions, 8570 flow [2024-06-28 00:57:23,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 466 transitions, 8279 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 00:57:23,481 INFO L231 Difference]: Finished difference. Result has 422 places, 435 transitions, 6981 flow [2024-06-28 00:57:23,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6981, PETRI_PLACES=422, PETRI_TRANSITIONS=435} [2024-06-28 00:57:23,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-28 00:57:23,481 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 435 transitions, 6981 flow [2024-06-28 00:57:23,481 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 00:57:23,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:23,482 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 00:57:23,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 00:57:23,482 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 00:57:23,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:23,482 INFO L85 PathProgramCache]: Analyzing trace with hash 814946261, now seen corresponding path program 18 times [2024-06-28 00:57:23,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:23,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789550753] [2024-06-28 00:57:23,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:23,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:23,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:24,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:57:24,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789550753] [2024-06-28 00:57:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789550753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:24,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:24,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:57:24,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790012627] [2024-06-28 00:57:24,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:24,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:57:24,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:24,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:57:24,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:57:24,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:24,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 435 transitions, 6981 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:24,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:24,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:24,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:26,072 INFO L124 PetriNetUnfolderBase]: 2783/5227 cut-off events. [2024-06-28 00:57:26,072 INFO L125 PetriNetUnfolderBase]: For 308600/308600 co-relation queries the response was YES. [2024-06-28 00:57:26,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35519 conditions, 5227 events. 2783/5227 cut-off events. For 308600/308600 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 37407 event pairs, 1004 based on Foata normal form. 2/4976 useless extension candidates. Maximal degree in co-relation 35309. Up to 4660 conditions per place. [2024-06-28 00:57:26,143 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 415 selfloop transitions, 38 changer transitions 0/460 dead transitions. [2024-06-28 00:57:26,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 460 transitions, 8169 flow [2024-06-28 00:57:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:26,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 00:57:26,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 00:57:26,144 INFO L175 Difference]: Start difference. First operand has 422 places, 435 transitions, 6981 flow. Second operand 10 states and 153 transitions. [2024-06-28 00:57:26,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 460 transitions, 8169 flow [2024-06-28 00:57:28,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 460 transitions, 7901 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:28,471 INFO L231 Difference]: Finished difference. Result has 425 places, 437 transitions, 6974 flow [2024-06-28 00:57:28,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6974, PETRI_PLACES=425, PETRI_TRANSITIONS=437} [2024-06-28 00:57:28,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-28 00:57:28,471 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 437 transitions, 6974 flow [2024-06-28 00:57:28,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:57:28,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:28,472 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 00:57:28,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 00:57:28,472 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 00:57:28,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:28,472 INFO L85 PathProgramCache]: Analyzing trace with hash 815253719, now seen corresponding path program 7 times [2024-06-28 00:57:28,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:28,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134918344] [2024-06-28 00:57:28,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:28,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:28,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:29,630 INFO 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 00:57:29,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134918344] [2024-06-28 00:57:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134918344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:29,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:29,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:29,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850417636] [2024-06-28 00:57:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:29,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:29,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:29,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:29,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:29,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:29,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 437 transitions, 6974 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 00:57:29,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:29,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:29,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:31,570 INFO L124 PetriNetUnfolderBase]: 2935/5506 cut-off events. [2024-06-28 00:57:31,570 INFO L125 PetriNetUnfolderBase]: For 472310/472312 co-relation queries the response was YES. [2024-06-28 00:57:31,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38994 conditions, 5506 events. 2935/5506 cut-off events. For 472310/472312 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 39936 event pairs, 864 based on Foata normal form. 8/5260 useless extension candidates. Maximal degree in co-relation 38783. Up to 3855 conditions per place. [2024-06-28 00:57:31,639 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 306 selfloop transitions, 164 changer transitions 0/477 dead transitions. [2024-06-28 00:57:31,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 477 transitions, 8658 flow [2024-06-28 00:57:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:57:31,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:57:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 00:57:31,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 00:57:31,640 INFO L175 Difference]: Start difference. First operand has 425 places, 437 transitions, 6974 flow. Second operand 11 states and 183 transitions. [2024-06-28 00:57:31,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 477 transitions, 8658 flow [2024-06-28 00:57:34,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 477 transitions, 8415 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:34,450 INFO L231 Difference]: Finished difference. Result has 429 places, 440 transitions, 7370 flow [2024-06-28 00:57:34,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6731, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7370, PETRI_PLACES=429, PETRI_TRANSITIONS=440} [2024-06-28 00:57:34,451 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-28 00:57:34,451 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 440 transitions, 7370 flow [2024-06-28 00:57:34,451 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 00:57:34,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:34,451 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 00:57:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 00:57:34,452 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 00:57:34,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash 814955189, now seen corresponding path program 8 times [2024-06-28 00:57:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:34,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224516857] [2024-06-28 00:57:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:35,632 INFO 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 00:57:35,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:35,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224516857] [2024-06-28 00:57:35,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224516857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:35,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:35,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:35,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612240371] [2024-06-28 00:57:35,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:35,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:35,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:35,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:35,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:35,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:35,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 440 transitions, 7370 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 00:57:35,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:35,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:35,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:37,376 INFO L124 PetriNetUnfolderBase]: 3003/5639 cut-off events. [2024-06-28 00:57:37,376 INFO L125 PetriNetUnfolderBase]: For 505648/505650 co-relation queries the response was YES. [2024-06-28 00:57:37,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40271 conditions, 5639 events. 3003/5639 cut-off events. For 505648/505650 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41166 event pairs, 925 based on Foata normal form. 10/5391 useless extension candidates. Maximal degree in co-relation 40058. Up to 4161 conditions per place. [2024-06-28 00:57:37,455 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 303 selfloop transitions, 159 changer transitions 0/469 dead transitions. [2024-06-28 00:57:37,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 469 transitions, 8563 flow [2024-06-28 00:57:37,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:37,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:57:37,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 00:57:37,457 INFO L175 Difference]: Start difference. First operand has 429 places, 440 transitions, 7370 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:57:37,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 469 transitions, 8563 flow [2024-06-28 00:57:40,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 469 transitions, 8224 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 00:57:40,382 INFO L231 Difference]: Finished difference. Result has 432 places, 441 transitions, 7474 flow [2024-06-28 00:57:40,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7039, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7474, PETRI_PLACES=432, PETRI_TRANSITIONS=441} [2024-06-28 00:57:40,382 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-28 00:57:40,383 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 441 transitions, 7474 flow [2024-06-28 00:57:40,383 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 00:57:40,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:40,383 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 00:57:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 00:57:40,383 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 00:57:40,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:40,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1475702775, now seen corresponding path program 19 times [2024-06-28 00:57:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:40,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023824577] [2024-06-28 00:57:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:41,583 INFO 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 00:57:41,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:41,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023824577] [2024-06-28 00:57:41,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023824577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:41,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:41,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:41,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926459419] [2024-06-28 00:57:41,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:41,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:41,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:41,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:41,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 441 transitions, 7474 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 00:57:41,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:41,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:41,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:43,350 INFO L124 PetriNetUnfolderBase]: 3023/5680 cut-off events. [2024-06-28 00:57:43,350 INFO L125 PetriNetUnfolderBase]: For 441869/441871 co-relation queries the response was YES. [2024-06-28 00:57:43,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40972 conditions, 5680 events. 3023/5680 cut-off events. For 441869/441871 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 41640 event pairs, 1014 based on Foata normal form. 2/5421 useless extension candidates. Maximal degree in co-relation 40757. Up to 4934 conditions per place. [2024-06-28 00:57:43,433 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 373 selfloop transitions, 87 changer transitions 0/467 dead transitions. [2024-06-28 00:57:43,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 467 transitions, 8684 flow [2024-06-28 00:57:43,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:43,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 00:57:43,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-28 00:57:43,448 INFO L175 Difference]: Start difference. First operand has 432 places, 441 transitions, 7474 flow. Second operand 10 states and 151 transitions. [2024-06-28 00:57:43,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 467 transitions, 8684 flow [2024-06-28 00:57:47,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 467 transitions, 8282 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:47,103 INFO L231 Difference]: Finished difference. Result has 434 places, 442 transitions, 7320 flow [2024-06-28 00:57:47,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7072, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7320, PETRI_PLACES=434, PETRI_TRANSITIONS=442} [2024-06-28 00:57:47,104 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 393 predicate places. [2024-06-28 00:57:47,104 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 442 transitions, 7320 flow [2024-06-28 00:57:47,104 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 00:57:47,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:47,104 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 00:57:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 00:57:47,105 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 00:57:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1711878135, now seen corresponding path program 20 times [2024-06-28 00:57:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529091735] [2024-06-28 00:57:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:48,550 INFO 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 00:57:48,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:48,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529091735] [2024-06-28 00:57:48,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529091735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:48,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:48,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:48,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090027505] [2024-06-28 00:57:48,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:48,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:48,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:48,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:48,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:48,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:48,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 442 transitions, 7320 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 00:57:48,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:48,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:48,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:50,447 INFO L124 PetriNetUnfolderBase]: 3020/5676 cut-off events. [2024-06-28 00:57:50,447 INFO L125 PetriNetUnfolderBase]: For 418664/418666 co-relation queries the response was YES. [2024-06-28 00:57:50,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39952 conditions, 5676 events. 3020/5676 cut-off events. For 418664/418666 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41612 event pairs, 999 based on Foata normal form. 2/5417 useless extension candidates. Maximal degree in co-relation 39736. Up to 4892 conditions per place. [2024-06-28 00:57:50,526 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 365 selfloop transitions, 96 changer transitions 0/468 dead transitions. [2024-06-28 00:57:50,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 468 transitions, 8529 flow [2024-06-28 00:57:50,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:50,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:50,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:57:50,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 00:57:50,527 INFO L175 Difference]: Start difference. First operand has 434 places, 442 transitions, 7320 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:57:50,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 468 transitions, 8529 flow [2024-06-28 00:57:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 468 transitions, 8227 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:53,679 INFO L231 Difference]: Finished difference. Result has 436 places, 444 transitions, 7390 flow [2024-06-28 00:57:53,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7056, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7390, PETRI_PLACES=436, PETRI_TRANSITIONS=444} [2024-06-28 00:57:53,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-28 00:57:53,680 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 444 transitions, 7390 flow [2024-06-28 00:57:53,680 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 00:57:53,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:53,680 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 00:57:53,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 00:57:53,681 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 00:57:53,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:53,681 INFO L85 PathProgramCache]: Analyzing trace with hash 806672051, now seen corresponding path program 21 times [2024-06-28 00:57:53,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:53,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991609946] [2024-06-28 00:57:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:53,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:57:54,584 INFO 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 00:57:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:57:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991609946] [2024-06-28 00:57:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991609946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:57:54,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:57:54,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:57:54,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765579553] [2024-06-28 00:57:54,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:57:54,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:57:54,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:57:54,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:57:54,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:57:54,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:57:54,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 444 transitions, 7390 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 00:57:54,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:57:54,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:57:54,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:57:56,329 INFO L124 PetriNetUnfolderBase]: 3017/5671 cut-off events. [2024-06-28 00:57:56,330 INFO L125 PetriNetUnfolderBase]: For 395413/395415 co-relation queries the response was YES. [2024-06-28 00:57:56,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39045 conditions, 5671 events. 3017/5671 cut-off events. For 395413/395415 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 41513 event pairs, 936 based on Foata normal form. 2/5412 useless extension candidates. Maximal degree in co-relation 38828. Up to 4317 conditions per place. [2024-06-28 00:57:56,410 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 302 selfloop transitions, 159 changer transitions 0/468 dead transitions. [2024-06-28 00:57:56,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 468 transitions, 8527 flow [2024-06-28 00:57:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:57:56,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:57:56,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:57:56,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 00:57:56,412 INFO L175 Difference]: Start difference. First operand has 436 places, 444 transitions, 7390 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:57:56,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 468 transitions, 8527 flow [2024-06-28 00:57:59,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 468 transitions, 8212 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 00:57:59,774 INFO L231 Difference]: Finished difference. Result has 438 places, 445 transitions, 7509 flow [2024-06-28 00:57:59,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7075, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7509, PETRI_PLACES=438, PETRI_TRANSITIONS=445} [2024-06-28 00:57:59,774 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 397 predicate places. [2024-06-28 00:57:59,774 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 445 transitions, 7509 flow [2024-06-28 00:57:59,775 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 00:57:59,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:57:59,775 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 00:57:59,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 00:57:59,775 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 00:57:59,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:57:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1711887063, now seen corresponding path program 9 times [2024-06-28 00:57:59,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:57:59,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297552333] [2024-06-28 00:57:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:57:59,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:57:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297552333] [2024-06-28 00:58:01,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297552333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:01,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854360961] [2024-06-28 00:58:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:01,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:01,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:01,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 445 transitions, 7509 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 00:58:01,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:01,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:01,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:03,628 INFO L124 PetriNetUnfolderBase]: 3098/5821 cut-off events. [2024-06-28 00:58:03,628 INFO L125 PetriNetUnfolderBase]: For 478203/478205 co-relation queries the response was YES. [2024-06-28 00:58:03,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40404 conditions, 5821 events. 3098/5821 cut-off events. For 478203/478205 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 42911 event pairs, 1024 based on Foata normal form. 10/5566 useless extension candidates. Maximal degree in co-relation 40186. Up to 4909 conditions per place. [2024-06-28 00:58:03,701 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 375 selfloop transitions, 97 changer transitions 0/479 dead transitions. [2024-06-28 00:58:03,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 479 transitions, 8759 flow [2024-06-28 00:58:03,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:03,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 00:58:03,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 00:58:03,702 INFO L175 Difference]: Start difference. First operand has 438 places, 445 transitions, 7509 flow. Second operand 11 states and 170 transitions. [2024-06-28 00:58:03,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 479 transitions, 8759 flow [2024-06-28 00:58:06,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 479 transitions, 8224 flow, removed 108 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:06,820 INFO L231 Difference]: Finished difference. Result has 442 places, 448 transitions, 7318 flow [2024-06-28 00:58:06,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6978, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7318, PETRI_PLACES=442, PETRI_TRANSITIONS=448} [2024-06-28 00:58:06,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-28 00:58:06,821 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 448 transitions, 7318 flow [2024-06-28 00:58:06,821 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 00:58:06,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:06,821 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 00:58:06,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 00:58:06,822 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 00:58:06,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:06,822 INFO L85 PathProgramCache]: Analyzing trace with hash 806665541, now seen corresponding path program 22 times [2024-06-28 00:58:06,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:06,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374832319] [2024-06-28 00:58:06,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:06,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:07,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:07,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:07,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374832319] [2024-06-28 00:58:07,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374832319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:07,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:07,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:07,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557021098] [2024-06-28 00:58:07,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:07,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:07,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:07,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:07,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:07,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:07,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 448 transitions, 7318 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 00:58:07,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:07,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:07,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:09,819 INFO L124 PetriNetUnfolderBase]: 3242/6138 cut-off events. [2024-06-28 00:58:09,820 INFO L125 PetriNetUnfolderBase]: For 552652/552654 co-relation queries the response was YES. [2024-06-28 00:58:09,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44274 conditions, 6138 events. 3242/6138 cut-off events. For 552652/552654 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 45943 event pairs, 1033 based on Foata normal form. 2/5861 useless extension candidates. Maximal degree in co-relation 44054. Up to 4463 conditions per place. [2024-06-28 00:58:09,902 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 163 changer transitions 0/485 dead transitions. [2024-06-28 00:58:09,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 485 transitions, 9142 flow [2024-06-28 00:58:09,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:09,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 00:58:09,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 00:58:09,904 INFO L175 Difference]: Start difference. First operand has 442 places, 448 transitions, 7318 flow. Second operand 10 states and 168 transitions. [2024-06-28 00:58:09,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 485 transitions, 9142 flow [2024-06-28 00:58:13,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 485 transitions, 8850 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 00:58:13,877 INFO L231 Difference]: Finished difference. Result has 445 places, 452 transitions, 7706 flow [2024-06-28 00:58:13,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7026, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7706, PETRI_PLACES=445, PETRI_TRANSITIONS=452} [2024-06-28 00:58:13,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-28 00:58:13,877 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 452 transitions, 7706 flow [2024-06-28 00:58:13,877 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 00:58:13,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:13,878 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 00:58:13,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 00:58:13,878 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 00:58:13,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash 806911619, now seen corresponding path program 10 times [2024-06-28 00:58:13,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:13,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796762700] [2024-06-28 00:58:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:13,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:58:15,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:15,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796762700] [2024-06-28 00:58:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796762700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:15,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:15,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:15,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813588315] [2024-06-28 00:58:15,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:15,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:15,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:15,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:15,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:15,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 452 transitions, 7706 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 00:58:15,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:15,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:18,227 INFO L124 PetriNetUnfolderBase]: 3229/6119 cut-off events. [2024-06-28 00:58:18,227 INFO L125 PetriNetUnfolderBase]: For 529489/529489 co-relation queries the response was YES. [2024-06-28 00:58:18,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42916 conditions, 6119 events. 3229/6119 cut-off events. For 529489/529489 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 45803 event pairs, 998 based on Foata normal form. 10/5848 useless extension candidates. Maximal degree in co-relation 42694. Up to 4576 conditions per place. [2024-06-28 00:58:18,308 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 311 selfloop transitions, 170 changer transitions 0/488 dead transitions. [2024-06-28 00:58:18,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 488 transitions, 8868 flow [2024-06-28 00:58:18,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 00:58:18,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 00:58:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-28 00:58:18,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-28 00:58:18,309 INFO L175 Difference]: Start difference. First operand has 445 places, 452 transitions, 7706 flow. Second operand 12 states and 191 transitions. [2024-06-28 00:58:18,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 488 transitions, 8868 flow [2024-06-28 00:58:21,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 488 transitions, 8337 flow, removed 156 selfloop flow, removed 7 redundant places. [2024-06-28 00:58:21,895 INFO L231 Difference]: Finished difference. Result has 450 places, 452 transitions, 7523 flow [2024-06-28 00:58:21,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7523, PETRI_PLACES=450, PETRI_TRANSITIONS=452} [2024-06-28 00:58:21,896 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 00:58:21,896 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 452 transitions, 7523 flow [2024-06-28 00:58:21,896 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 00:58:21,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:21,903 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 00:58:21,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 00:58:21,904 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 00:58:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:21,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1052139951, now seen corresponding path program 11 times [2024-06-28 00:58:21,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:21,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056569507] [2024-06-28 00:58:21,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:21,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:23,275 INFO 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 00:58:23,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:23,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056569507] [2024-06-28 00:58:23,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056569507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:23,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:23,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:23,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488877909] [2024-06-28 00:58:23,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:23,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:23,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:23,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:23,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:23,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:23,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 452 transitions, 7523 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 00:58:23,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:23,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:23,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:25,429 INFO L124 PetriNetUnfolderBase]: 3313/6316 cut-off events. [2024-06-28 00:58:25,429 INFO L125 PetriNetUnfolderBase]: For 520012/520014 co-relation queries the response was YES. [2024-06-28 00:58:25,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43434 conditions, 6316 events. 3313/6316 cut-off events. For 520012/520014 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 47842 event pairs, 1161 based on Foata normal form. 10/6032 useless extension candidates. Maximal degree in co-relation 43211. Up to 5235 conditions per place. [2024-06-28 00:58:25,528 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 375 selfloop transitions, 103 changer transitions 0/485 dead transitions. [2024-06-28 00:58:25,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 485 transitions, 8771 flow [2024-06-28 00:58:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:25,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:58:25,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 00:58:25,529 INFO L175 Difference]: Start difference. First operand has 450 places, 452 transitions, 7523 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:58:25,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 485 transitions, 8771 flow [2024-06-28 00:58:30,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 485 transitions, 8414 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 00:58:30,034 INFO L231 Difference]: Finished difference. Result has 450 places, 452 transitions, 7376 flow [2024-06-28 00:58:30,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7166, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7376, PETRI_PLACES=450, PETRI_TRANSITIONS=452} [2024-06-28 00:58:30,035 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 409 predicate places. [2024-06-28 00:58:30,035 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 452 transitions, 7376 flow [2024-06-28 00:58:30,035 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 00:58:30,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:30,035 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 00:58:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 00:58:30,035 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 00:58:30,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1712185593, now seen corresponding path program 12 times [2024-06-28 00:58:30,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056792721] [2024-06-28 00:58:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:31,096 INFO 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 00:58:31,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:31,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056792721] [2024-06-28 00:58:31,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056792721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:31,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:31,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:31,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579787779] [2024-06-28 00:58:31,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:31,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:31,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:31,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:31,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:31,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 452 transitions, 7376 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:31,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:31,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:31,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:33,357 INFO L124 PetriNetUnfolderBase]: 3446/6559 cut-off events. [2024-06-28 00:58:33,358 INFO L125 PetriNetUnfolderBase]: For 617122/617124 co-relation queries the response was YES. [2024-06-28 00:58:33,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46416 conditions, 6559 events. 3446/6559 cut-off events. For 617122/617124 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 50110 event pairs, 1184 based on Foata normal form. 8/6282 useless extension candidates. Maximal degree in co-relation 46192. Up to 4907 conditions per place. [2024-06-28 00:58:33,453 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 378 selfloop transitions, 105 changer transitions 0/490 dead transitions. [2024-06-28 00:58:33,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 490 transitions, 9072 flow [2024-06-28 00:58:33,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:33,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:33,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 00:58:33,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 00:58:33,455 INFO L175 Difference]: Start difference. First operand has 450 places, 452 transitions, 7376 flow. Second operand 10 states and 165 transitions. [2024-06-28 00:58:33,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 490 transitions, 9072 flow [2024-06-28 00:58:37,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 490 transitions, 8858 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 00:58:37,969 INFO L231 Difference]: Finished difference. Result has 451 places, 455 transitions, 7654 flow [2024-06-28 00:58:37,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7162, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7654, PETRI_PLACES=451, PETRI_TRANSITIONS=455} [2024-06-28 00:58:37,970 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 410 predicate places. [2024-06-28 00:58:37,970 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 455 transitions, 7654 flow [2024-06-28 00:58:37,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:37,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:37,970 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 00:58:37,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 00:58:37,970 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 00:58:37,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:37,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1268356315, now seen corresponding path program 13 times [2024-06-28 00:58:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:37,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438881243] [2024-06-28 00:58:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:39,136 INFO 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 00:58:39,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:39,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438881243] [2024-06-28 00:58:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438881243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:39,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196122153] [2024-06-28 00:58:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:39,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:39,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 455 transitions, 7654 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:39,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:39,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:41,070 INFO L124 PetriNetUnfolderBase]: 3430/6527 cut-off events. [2024-06-28 00:58:41,070 INFO L125 PetriNetUnfolderBase]: For 563298/563298 co-relation queries the response was YES. [2024-06-28 00:58:41,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44882 conditions, 6527 events. 3430/6527 cut-off events. For 563298/563298 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 49811 event pairs, 1394 based on Foata normal form. 12/6257 useless extension candidates. Maximal degree in co-relation 44657. Up to 5828 conditions per place. [2024-06-28 00:58:41,173 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 448 selfloop transitions, 27 changer transitions 0/482 dead transitions. [2024-06-28 00:58:41,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 482 transitions, 8911 flow [2024-06-28 00:58:41,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:58:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:58:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:58:41,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-28 00:58:41,174 INFO L175 Difference]: Start difference. First operand has 451 places, 455 transitions, 7654 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:58:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 482 transitions, 8911 flow [2024-06-28 00:58:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 482 transitions, 8579 flow, removed 102 selfloop flow, removed 6 redundant places. [2024-06-28 00:58:45,232 INFO L231 Difference]: Finished difference. Result has 456 places, 457 transitions, 7569 flow [2024-06-28 00:58:45,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7362, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7569, PETRI_PLACES=456, PETRI_TRANSITIONS=457} [2024-06-28 00:58:45,232 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 415 predicate places. [2024-06-28 00:58:45,232 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 457 transitions, 7569 flow [2024-06-28 00:58:45,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:45,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:45,233 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 00:58:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 00:58:45,233 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 00:58:45,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:45,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2002673449, now seen corresponding path program 14 times [2024-06-28 00:58:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:45,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030741891] [2024-06-28 00:58:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:46,104 INFO 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 00:58:46,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:46,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030741891] [2024-06-28 00:58:46,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030741891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:46,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:46,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:58:46,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309406292] [2024-06-28 00:58:46,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:46,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:58:46,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:46,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:58:46,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:58:46,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:46,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 457 transitions, 7569 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:46,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:46,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:46,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:48,118 INFO L124 PetriNetUnfolderBase]: 3482/6627 cut-off events. [2024-06-28 00:58:48,119 INFO L125 PetriNetUnfolderBase]: For 522839/522839 co-relation queries the response was YES. [2024-06-28 00:58:48,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45012 conditions, 6627 events. 3482/6627 cut-off events. For 522839/522839 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 50794 event pairs, 1393 based on Foata normal form. 8/6353 useless extension candidates. Maximal degree in co-relation 44785. Up to 5806 conditions per place. [2024-06-28 00:58:48,221 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 454 selfloop transitions, 28 changer transitions 0/489 dead transitions. [2024-06-28 00:58:48,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 489 transitions, 8829 flow [2024-06-28 00:58:48,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:48,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 00:58:48,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 00:58:48,222 INFO L175 Difference]: Start difference. First operand has 456 places, 457 transitions, 7569 flow. Second operand 10 states and 158 transitions. [2024-06-28 00:58:48,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 489 transitions, 8829 flow [2024-06-28 00:58:52,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 489 transitions, 8651 flow, removed 64 selfloop flow, removed 9 redundant places. [2024-06-28 00:58:52,722 INFO L231 Difference]: Finished difference. Result has 457 places, 458 transitions, 7577 flow [2024-06-28 00:58:52,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7391, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7577, PETRI_PLACES=457, PETRI_TRANSITIONS=458} [2024-06-28 00:58:52,722 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 416 predicate places. [2024-06-28 00:58:52,722 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 458 transitions, 7577 flow [2024-06-28 00:58:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:58:52,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:58:52,723 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 00:58:52,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 00:58:52,723 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 00:58:52,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:58:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1475696265, now seen corresponding path program 23 times [2024-06-28 00:58:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:58:52,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827184715] [2024-06-28 00:58:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:58:52,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:58:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:58:53,925 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 00:58:53,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:58:53,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827184715] [2024-06-28 00:58:53,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827184715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:58:53,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:58:53,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:58:53,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802963952] [2024-06-28 00:58:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:58:53,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:58:53,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:58:53,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:58:53,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:58:54,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:58:54,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 458 transitions, 7577 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 00:58:54,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:58:54,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:58:54,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:58:55,978 INFO L124 PetriNetUnfolderBase]: 3506/6686 cut-off events. [2024-06-28 00:58:55,978 INFO L125 PetriNetUnfolderBase]: For 470479/470481 co-relation queries the response was YES. [2024-06-28 00:58:56,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45276 conditions, 6686 events. 3506/6686 cut-off events. For 470479/470481 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 51419 event pairs, 1307 based on Foata normal form. 2/6395 useless extension candidates. Maximal degree in co-relation 45048. Up to 5830 conditions per place. [2024-06-28 00:58:56,094 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 393 selfloop transitions, 88 changer transitions 0/488 dead transitions. [2024-06-28 00:58:56,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 488 transitions, 8931 flow [2024-06-28 00:58:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:58:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:58:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 00:58:56,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-28 00:58:56,096 INFO L175 Difference]: Start difference. First operand has 457 places, 458 transitions, 7577 flow. Second operand 10 states and 154 transitions. [2024-06-28 00:58:56,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 488 transitions, 8931 flow [2024-06-28 00:59:00,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 488 transitions, 8709 flow, removed 84 selfloop flow, removed 8 redundant places. [2024-06-28 00:59:00,259 INFO L231 Difference]: Finished difference. Result has 460 places, 461 transitions, 7820 flow [2024-06-28 00:59:00,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7355, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7820, PETRI_PLACES=460, PETRI_TRANSITIONS=461} [2024-06-28 00:59:00,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-28 00:59:00,259 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 461 transitions, 7820 flow [2024-06-28 00:59:00,260 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 00:59:00,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:00,260 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 00:59:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 00:59:00,260 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 00:59:00,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1482198453, now seen corresponding path program 15 times [2024-06-28 00:59:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:00,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581878964] [2024-06-28 00:59:00,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:00,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:01,619 INFO 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 00:59:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581878964] [2024-06-28 00:59:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581878964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:01,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:01,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959276211] [2024-06-28 00:59:01,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:01,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:01,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:01,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 461 transitions, 7820 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 00:59:01,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:01,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:01,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:03,991 INFO L124 PetriNetUnfolderBase]: 3552/6816 cut-off events. [2024-06-28 00:59:03,991 INFO L125 PetriNetUnfolderBase]: For 505390/505392 co-relation queries the response was YES. [2024-06-28 00:59:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45163 conditions, 6816 events. 3552/6816 cut-off events. For 505390/505392 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 52788 event pairs, 1359 based on Foata normal form. 10/6521 useless extension candidates. Maximal degree in co-relation 44933. Up to 5784 conditions per place. [2024-06-28 00:59:04,093 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 398 selfloop transitions, 88 changer transitions 0/493 dead transitions. [2024-06-28 00:59:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 493 transitions, 9067 flow [2024-06-28 00:59:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:59:04,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 00:59:04,094 INFO L175 Difference]: Start difference. First operand has 460 places, 461 transitions, 7820 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:59:04,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 493 transitions, 9067 flow [2024-06-28 00:59:08,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 493 transitions, 8632 flow, removed 133 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:08,272 INFO L231 Difference]: Finished difference. Result has 464 places, 461 transitions, 7565 flow [2024-06-28 00:59:08,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7385, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7565, PETRI_PLACES=464, PETRI_TRANSITIONS=461} [2024-06-28 00:59:08,272 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-28 00:59:08,273 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 461 transitions, 7565 flow [2024-06-28 00:59:08,273 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 00:59:08,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:08,273 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 00:59:08,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 00:59:08,273 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 00:59:08,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:08,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1990708999, now seen corresponding path program 16 times [2024-06-28 00:59:08,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:08,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975404985] [2024-06-28 00:59:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:08,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:09,248 INFO 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 00:59:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:09,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975404985] [2024-06-28 00:59:09,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975404985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:09,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:09,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:09,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747395269] [2024-06-28 00:59:09,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:09,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:09,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:09,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:09,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:09,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:09,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 461 transitions, 7565 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:09,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:09,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:09,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:11,594 INFO L124 PetriNetUnfolderBase]: 3666/7025 cut-off events. [2024-06-28 00:59:11,594 INFO L125 PetriNetUnfolderBase]: For 582867/582867 co-relation queries the response was YES. [2024-06-28 00:59:11,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47321 conditions, 7025 events. 3666/7025 cut-off events. For 582867/582867 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 54772 event pairs, 1516 based on Foata normal form. 8/6738 useless extension candidates. Maximal degree in co-relation 47090. Up to 5811 conditions per place. [2024-06-28 00:59:11,698 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 462 selfloop transitions, 30 changer transitions 0/499 dead transitions. [2024-06-28 00:59:11,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 499 transitions, 9263 flow [2024-06-28 00:59:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:11,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 00:59:11,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 00:59:11,700 INFO L175 Difference]: Start difference. First operand has 464 places, 461 transitions, 7565 flow. Second operand 11 states and 172 transitions. [2024-06-28 00:59:11,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 499 transitions, 9263 flow [2024-06-28 00:59:16,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 499 transitions, 9088 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 00:59:16,077 INFO L231 Difference]: Finished difference. Result has 466 places, 463 transitions, 7712 flow [2024-06-28 00:59:16,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7390, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7712, PETRI_PLACES=466, PETRI_TRANSITIONS=463} [2024-06-28 00:59:16,078 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-28 00:59:16,078 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 463 transitions, 7712 flow [2024-06-28 00:59:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:16,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:16,078 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 00:59:16,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 00:59:16,079 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 00:59:16,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1475523285, now seen corresponding path program 24 times [2024-06-28 00:59:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864227165] [2024-06-28 00:59:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:16,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:17,217 INFO 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 00:59:17,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:17,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864227165] [2024-06-28 00:59:17,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864227165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:17,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:17,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 00:59:17,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508471038] [2024-06-28 00:59:17,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:17,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 00:59:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 00:59:17,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 00:59:17,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:17,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 463 transitions, 7712 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:17,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:17,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:17,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:19,474 INFO L124 PetriNetUnfolderBase]: 3674/7063 cut-off events. [2024-06-28 00:59:19,474 INFO L125 PetriNetUnfolderBase]: For 526804/526806 co-relation queries the response was YES. [2024-06-28 00:59:19,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47466 conditions, 7063 events. 3674/7063 cut-off events. For 526804/526806 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 55374 event pairs, 1419 based on Foata normal form. 2/6755 useless extension candidates. Maximal degree in co-relation 47234. Up to 6129 conditions per place. [2024-06-28 00:59:19,603 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 402 selfloop transitions, 87 changer transitions 0/496 dead transitions. [2024-06-28 00:59:19,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 496 transitions, 9100 flow [2024-06-28 00:59:19,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:19,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 00:59:19,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-28 00:59:19,605 INFO L175 Difference]: Start difference. First operand has 466 places, 463 transitions, 7712 flow. Second operand 10 states and 157 transitions. [2024-06-28 00:59:19,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 496 transitions, 9100 flow [2024-06-28 00:59:24,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 496 transitions, 8944 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:24,694 INFO L231 Difference]: Finished difference. Result has 470 places, 465 transitions, 7895 flow [2024-06-28 00:59:24,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7895, PETRI_PLACES=470, PETRI_TRANSITIONS=465} [2024-06-28 00:59:24,694 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 429 predicate places. [2024-06-28 00:59:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 465 transitions, 7895 flow [2024-06-28 00:59:24,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:24,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:24,695 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 00:59:24,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 00:59:24,695 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 00:59:24,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1949995257, now seen corresponding path program 17 times [2024-06-28 00:59:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941720317] [2024-06-28 00:59:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:24,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:26,340 INFO 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 00:59:26,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:26,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941720317] [2024-06-28 00:59:26,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941720317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:26,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:26,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:26,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118467732] [2024-06-28 00:59:26,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:26,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:26,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:26,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:26,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 465 transitions, 7895 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 00:59:26,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:26,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:26,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:28,793 INFO L124 PetriNetUnfolderBase]: 3769/7252 cut-off events. [2024-06-28 00:59:28,793 INFO L125 PetriNetUnfolderBase]: For 649119/649119 co-relation queries the response was YES. [2024-06-28 00:59:28,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49632 conditions, 7252 events. 3769/7252 cut-off events. For 649119/649119 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 57148 event pairs, 1618 based on Foata normal form. 8/6955 useless extension candidates. Maximal degree in co-relation 49397. Up to 6370 conditions per place. [2024-06-28 00:59:28,902 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 473 selfloop transitions, 24 changer transitions 0/504 dead transitions. [2024-06-28 00:59:28,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 504 transitions, 9615 flow [2024-06-28 00:59:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 00:59:28,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-28 00:59:28,904 INFO L175 Difference]: Start difference. First operand has 470 places, 465 transitions, 7895 flow. Second operand 11 states and 167 transitions. [2024-06-28 00:59:28,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 504 transitions, 9615 flow [2024-06-28 00:59:34,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 504 transitions, 9320 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 00:59:34,631 INFO L231 Difference]: Finished difference. Result has 476 places, 469 transitions, 7933 flow [2024-06-28 00:59:34,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7600, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7933, PETRI_PLACES=476, PETRI_TRANSITIONS=469} [2024-06-28 00:59:34,632 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-28 00:59:34,632 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 469 transitions, 7933 flow [2024-06-28 00:59:34,632 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 00:59:34,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:34,633 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 00:59:34,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 00:59:34,633 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 00:59:34,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:34,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1949985027, now seen corresponding path program 18 times [2024-06-28 00:59:34,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:34,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246518926] [2024-06-28 00:59:34,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:34,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:36,341 INFO 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 00:59:36,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:36,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246518926] [2024-06-28 00:59:36,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246518926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:36,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:36,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:36,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729658697] [2024-06-28 00:59:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:36,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:36,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:36,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:36,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:36,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:36,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 469 transitions, 7933 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 00:59:36,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:36,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:36,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:38,837 INFO L124 PetriNetUnfolderBase]: 3837/7382 cut-off events. [2024-06-28 00:59:38,838 INFO L125 PetriNetUnfolderBase]: For 683951/683951 co-relation queries the response was YES. [2024-06-28 00:59:38,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50116 conditions, 7382 events. 3837/7382 cut-off events. For 683951/683951 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 58430 event pairs, 1694 based on Foata normal form. 10/7085 useless extension candidates. Maximal degree in co-relation 49878. Up to 6655 conditions per place. [2024-06-28 00:59:38,953 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 470 selfloop transitions, 22 changer transitions 0/499 dead transitions. [2024-06-28 00:59:38,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 499 transitions, 9189 flow [2024-06-28 00:59:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 00:59:38,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-28 00:59:38,955 INFO L175 Difference]: Start difference. First operand has 476 places, 469 transitions, 7933 flow. Second operand 11 states and 161 transitions. [2024-06-28 00:59:38,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 499 transitions, 9189 flow [2024-06-28 00:59:44,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 499 transitions, 9060 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-06-28 00:59:44,218 INFO L231 Difference]: Finished difference. Result has 481 places, 470 transitions, 7978 flow [2024-06-28 00:59:44,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7804, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7978, PETRI_PLACES=481, PETRI_TRANSITIONS=470} [2024-06-28 00:59:44,219 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 440 predicate places. [2024-06-28 00:59:44,219 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 470 transitions, 7978 flow [2024-06-28 00:59:44,219 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 00:59:44,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:44,219 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 00:59:44,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 00:59:44,219 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 00:59:44,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1949696727, now seen corresponding path program 19 times [2024-06-28 00:59:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960943113] [2024-06-28 00:59:44,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:45,461 INFO 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 00:59:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:45,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960943113] [2024-06-28 00:59:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960943113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 00:59:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158649742] [2024-06-28 00:59:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 00:59:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 00:59:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 00:59:45,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:45,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 470 transitions, 7978 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 00:59:45,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:45,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:45,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:47,788 INFO L124 PetriNetUnfolderBase]: 3817/7347 cut-off events. [2024-06-28 00:59:47,788 INFO L125 PetriNetUnfolderBase]: For 581095/581095 co-relation queries the response was YES. [2024-06-28 00:59:47,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47486 conditions, 7347 events. 3817/7347 cut-off events. For 581095/581095 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 58190 event pairs, 1679 based on Foata normal form. 16/7058 useless extension candidates. Maximal degree in co-relation 47246. Up to 6538 conditions per place. [2024-06-28 00:59:47,902 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 471 selfloop transitions, 21 changer transitions 0/499 dead transitions. [2024-06-28 00:59:47,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 499 transitions, 9117 flow [2024-06-28 00:59:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 00:59:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 00:59:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 159 transitions. [2024-06-28 00:59:47,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906633906633907 [2024-06-28 00:59:47,904 INFO L175 Difference]: Start difference. First operand has 481 places, 470 transitions, 7978 flow. Second operand 11 states and 159 transitions. [2024-06-28 00:59:47,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 499 transitions, 9117 flow [2024-06-28 00:59:53,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 499 transitions, 8757 flow, removed 156 selfloop flow, removed 10 redundant places. [2024-06-28 00:59:53,006 INFO L231 Difference]: Finished difference. Result has 483 places, 472 transitions, 7700 flow [2024-06-28 00:59:53,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7618, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7700, PETRI_PLACES=483, PETRI_TRANSITIONS=472} [2024-06-28 00:59:53,007 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 442 predicate places. [2024-06-28 00:59:53,007 INFO L495 AbstractCegarLoop]: Abstraction has has 483 places, 472 transitions, 7700 flow [2024-06-28 00:59:53,007 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 00:59:53,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:59:53,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:59:53,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 00:59:53,008 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 00:59:53,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:59:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash -2036304177, now seen corresponding path program 1 times [2024-06-28 00:59:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:59:53,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59047465] [2024-06-28 00:59:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:59:53,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:59:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:59:54,772 INFO 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 00:59:54,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:59:54,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59047465] [2024-06-28 00:59:54,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59047465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:59:54,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:59:54,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 00:59:54,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887022513] [2024-06-28 00:59:54,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:59:54,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 00:59:54,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:59:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 00:59:54,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 00:59:54,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 00:59:54,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 483 places, 472 transitions, 7700 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:59:54,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:59:54,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 00:59:54,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:59:57,450 INFO L124 PetriNetUnfolderBase]: 3873/7466 cut-off events. [2024-06-28 00:59:57,450 INFO L125 PetriNetUnfolderBase]: For 453588/453588 co-relation queries the response was YES. [2024-06-28 00:59:57,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46914 conditions, 7466 events. 3873/7466 cut-off events. For 453588/453588 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 59117 event pairs, 1452 based on Foata normal form. 6/7209 useless extension candidates. Maximal degree in co-relation 46672. Up to 6330 conditions per place. [2024-06-28 00:59:57,545 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 445 selfloop transitions, 60 changer transitions 0/512 dead transitions. [2024-06-28 00:59:57,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 512 transitions, 8996 flow [2024-06-28 00:59:57,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 00:59:57,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 00:59:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 00:59:57,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 00:59:57,547 INFO L175 Difference]: Start difference. First operand has 483 places, 472 transitions, 7700 flow. Second operand 10 states and 166 transitions. [2024-06-28 00:59:57,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 512 transitions, 8996 flow [2024-06-28 01:00:01,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 512 transitions, 8931 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:01,841 INFO L231 Difference]: Finished difference. Result has 484 places, 473 transitions, 7892 flow [2024-06-28 01:00:01,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7635, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7892, PETRI_PLACES=484, PETRI_TRANSITIONS=473} [2024-06-28 01:00:01,842 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-28 01:00:01,842 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 473 transitions, 7892 flow [2024-06-28 01:00:01,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:01,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:01,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:01,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:00:01,843 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 01:00:01,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:01,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1968196193, now seen corresponding path program 2 times [2024-06-28 01:00:01,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:01,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729724154] [2024-06-28 01:00:01,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:01,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:03,497 INFO 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 01:00:03,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:03,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729724154] [2024-06-28 01:00:03,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729724154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:03,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:03,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:03,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080081937] [2024-06-28 01:00:03,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:03,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:03,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:03,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:03,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:03,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 473 transitions, 7892 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:03,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:03,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:03,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:06,138 INFO L124 PetriNetUnfolderBase]: 3921/7565 cut-off events. [2024-06-28 01:00:06,139 INFO L125 PetriNetUnfolderBase]: For 472944/472944 co-relation queries the response was YES. [2024-06-28 01:00:06,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47790 conditions, 7565 events. 3921/7565 cut-off events. For 472944/472944 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 60392 event pairs, 1639 based on Foata normal form. 6/7266 useless extension candidates. Maximal degree in co-relation 47547. Up to 6600 conditions per place. [2024-06-28 01:00:06,265 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 440 selfloop transitions, 71 changer transitions 0/518 dead transitions. [2024-06-28 01:00:06,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 518 transitions, 9365 flow [2024-06-28 01:00:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:06,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:00:06,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:00:06,266 INFO L175 Difference]: Start difference. First operand has 484 places, 473 transitions, 7892 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:00:06,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 518 transitions, 9365 flow [2024-06-28 01:00:11,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 518 transitions, 9122 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:11,423 INFO L231 Difference]: Finished difference. Result has 488 places, 476 transitions, 8075 flow [2024-06-28 01:00:11,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7649, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8075, PETRI_PLACES=488, PETRI_TRANSITIONS=476} [2024-06-28 01:00:11,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-28 01:00:11,424 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 476 transitions, 8075 flow [2024-06-28 01:00:11,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:11,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:11,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:11,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:00:11,425 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 01:00:11,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2106724343, now seen corresponding path program 3 times [2024-06-28 01:00:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345127937] [2024-06-28 01:00:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:12,774 INFO 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 01:00:12,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:12,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345127937] [2024-06-28 01:00:12,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345127937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:12,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:12,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:12,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011581529] [2024-06-28 01:00:12,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:12,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:12,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:12,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:12,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:12,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:12,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 476 transitions, 8075 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:12,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:12,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:12,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:15,628 INFO L124 PetriNetUnfolderBase]: 3961/7670 cut-off events. [2024-06-28 01:00:15,628 INFO L125 PetriNetUnfolderBase]: For 478251/478251 co-relation queries the response was YES. [2024-06-28 01:00:15,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48171 conditions, 7670 events. 3961/7670 cut-off events. For 478251/478251 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 61611 event pairs, 1650 based on Foata normal form. 6/7365 useless extension candidates. Maximal degree in co-relation 47926. Up to 6542 conditions per place. [2024-06-28 01:00:15,728 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 423 selfloop transitions, 89 changer transitions 0/519 dead transitions. [2024-06-28 01:00:15,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 519 transitions, 9486 flow [2024-06-28 01:00:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:00:15,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:00:15,729 INFO L175 Difference]: Start difference. First operand has 488 places, 476 transitions, 8075 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:00:15,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 519 transitions, 9486 flow [2024-06-28 01:00:20,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 519 transitions, 9121 flow, removed 132 selfloop flow, removed 7 redundant places. [2024-06-28 01:00:20,650 INFO L231 Difference]: Finished difference. Result has 493 places, 477 transitions, 7970 flow [2024-06-28 01:00:20,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7710, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7970, PETRI_PLACES=493, PETRI_TRANSITIONS=477} [2024-06-28 01:00:20,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 452 predicate places. [2024-06-28 01:00:20,651 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 477 transitions, 7970 flow [2024-06-28 01:00:20,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:20,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:20,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:00:20,651 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 01:00:20,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:20,651 INFO L85 PathProgramCache]: Analyzing trace with hash 2112295973, now seen corresponding path program 4 times [2024-06-28 01:00:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895394739] [2024-06-28 01:00:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:00:21,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:21,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895394739] [2024-06-28 01:00:21,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895394739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:21,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:21,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:21,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009912675] [2024-06-28 01:00:21,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:21,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:21,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:21,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:21,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:22,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:22,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 477 transitions, 7970 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:22,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:22,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:24,729 INFO L124 PetriNetUnfolderBase]: 4013/7771 cut-off events. [2024-06-28 01:00:24,729 INFO L125 PetriNetUnfolderBase]: For 503861/503861 co-relation queries the response was YES. [2024-06-28 01:00:24,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48808 conditions, 7771 events. 4013/7771 cut-off events. For 503861/503861 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 62580 event pairs, 1712 based on Foata normal form. 8/7466 useless extension candidates. Maximal degree in co-relation 48560. Up to 6606 conditions per place. [2024-06-28 01:00:24,861 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 403 selfloop transitions, 104 changer transitions 0/514 dead transitions. [2024-06-28 01:00:24,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 514 transitions, 9422 flow [2024-06-28 01:00:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:24,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:00:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:00:24,863 INFO L175 Difference]: Start difference. First operand has 493 places, 477 transitions, 7970 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:00:24,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 514 transitions, 9422 flow [2024-06-28 01:00:29,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 514 transitions, 9178 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:00:29,927 INFO L231 Difference]: Finished difference. Result has 496 places, 481 transitions, 8216 flow [2024-06-28 01:00:29,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7726, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8216, PETRI_PLACES=496, PETRI_TRANSITIONS=481} [2024-06-28 01:00:29,928 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-28 01:00:29,928 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 481 transitions, 8216 flow [2024-06-28 01:00:29,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:29,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:29,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:29,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:00:29,929 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 01:00:29,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:29,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2112288533, now seen corresponding path program 5 times [2024-06-28 01:00:29,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:29,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180882802] [2024-06-28 01:00:29,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:29,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:32,209 INFO 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 01:00:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180882802] [2024-06-28 01:00:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180882802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:32,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:32,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:32,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645916309] [2024-06-28 01:00:32,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:32,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:32,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:32,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:32,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:32,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:32,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 481 transitions, 8216 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:32,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:32,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:32,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:35,195 INFO L124 PetriNetUnfolderBase]: 4085/7915 cut-off events. [2024-06-28 01:00:35,195 INFO L125 PetriNetUnfolderBase]: For 569511/569511 co-relation queries the response was YES. [2024-06-28 01:00:35,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50044 conditions, 7915 events. 4085/7915 cut-off events. For 569511/569511 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 63996 event pairs, 1726 based on Foata normal form. 12/7614 useless extension candidates. Maximal degree in co-relation 49795. Up to 6594 conditions per place. [2024-06-28 01:00:35,324 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 409 selfloop transitions, 104 changer transitions 0/520 dead transitions. [2024-06-28 01:00:35,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 520 transitions, 9680 flow [2024-06-28 01:00:35,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:35,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:35,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:00:35,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:00:35,325 INFO L175 Difference]: Start difference. First operand has 496 places, 481 transitions, 8216 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:00:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 520 transitions, 9680 flow [2024-06-28 01:00:40,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 520 transitions, 9263 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:40,732 INFO L231 Difference]: Finished difference. Result has 498 places, 483 transitions, 8260 flow [2024-06-28 01:00:40,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7799, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8260, PETRI_PLACES=498, PETRI_TRANSITIONS=483} [2024-06-28 01:00:40,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 457 predicate places. [2024-06-28 01:00:40,733 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 483 transitions, 8260 flow [2024-06-28 01:00:40,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:40,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:40,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:40,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:00:40,733 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 01:00:40,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:40,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2112086723, now seen corresponding path program 6 times [2024-06-28 01:00:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834699828] [2024-06-28 01:00:40,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:40,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:42,434 INFO 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 01:00:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834699828] [2024-06-28 01:00:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834699828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:42,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:42,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:42,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325240058] [2024-06-28 01:00:42,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:42,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:42,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:42,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:42,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:42,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:42,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 483 transitions, 8260 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:42,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:42,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:42,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:45,509 INFO L124 PetriNetUnfolderBase]: 4141/8059 cut-off events. [2024-06-28 01:00:45,509 INFO L125 PetriNetUnfolderBase]: For 490275/490275 co-relation queries the response was YES. [2024-06-28 01:00:45,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49665 conditions, 8059 events. 4141/8059 cut-off events. For 490275/490275 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 65644 event pairs, 1804 based on Foata normal form. 6/7745 useless extension candidates. Maximal degree in co-relation 49415. Up to 6416 conditions per place. [2024-06-28 01:00:45,623 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 422 selfloop transitions, 98 changer transitions 0/527 dead transitions. [2024-06-28 01:00:45,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 527 transitions, 9785 flow [2024-06-28 01:00:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:45,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:00:45,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:00:45,653 INFO L175 Difference]: Start difference. First operand has 498 places, 483 transitions, 8260 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:00:45,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 527 transitions, 9785 flow [2024-06-28 01:00:50,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 527 transitions, 9297 flow, removed 142 selfloop flow, removed 9 redundant places. [2024-06-28 01:00:50,667 INFO L231 Difference]: Finished difference. Result has 500 places, 483 transitions, 7971 flow [2024-06-28 01:00:50,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7772, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7971, PETRI_PLACES=500, PETRI_TRANSITIONS=483} [2024-06-28 01:00:50,667 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 459 predicate places. [2024-06-28 01:00:50,669 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 483 transitions, 7971 flow [2024-06-28 01:00:50,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:50,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:00:50,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:00:50,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:00:50,670 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 01:00:50,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:00:50,670 INFO L85 PathProgramCache]: Analyzing trace with hash 610937441, now seen corresponding path program 7 times [2024-06-28 01:00:50,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:00:50,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404217521] [2024-06-28 01:00:50,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:00:50,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:00:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:00:52,178 INFO 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 01:00:52,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:00:52,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404217521] [2024-06-28 01:00:52,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404217521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:00:52,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:00:52,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:00:52,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468085387] [2024-06-28 01:00:52,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:00:52,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:00:52,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:00:52,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:00:52,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:00:52,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:00:52,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 483 transitions, 7971 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:00:52,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:00:52,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:00:52,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:00:55,104 INFO L124 PetriNetUnfolderBase]: 4189/8207 cut-off events. [2024-06-28 01:00:55,104 INFO L125 PetriNetUnfolderBase]: For 487961/487961 co-relation queries the response was YES. [2024-06-28 01:00:55,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49754 conditions, 8207 events. 4189/8207 cut-off events. For 487961/487961 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 67364 event pairs, 1753 based on Foata normal form. 6/7924 useless extension candidates. Maximal degree in co-relation 49503. Up to 7083 conditions per place. [2024-06-28 01:00:55,240 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 449 selfloop transitions, 74 changer transitions 0/530 dead transitions. [2024-06-28 01:00:55,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 530 transitions, 9430 flow [2024-06-28 01:00:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:00:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:00:55,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-28 01:00:55,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-28 01:00:55,242 INFO L175 Difference]: Start difference. First operand has 500 places, 483 transitions, 7971 flow. Second operand 11 states and 181 transitions. [2024-06-28 01:00:55,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 530 transitions, 9430 flow [2024-06-28 01:01:00,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 530 transitions, 9235 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:00,627 INFO L231 Difference]: Finished difference. Result has 503 places, 484 transitions, 8008 flow [2024-06-28 01:01:00,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7776, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8008, PETRI_PLACES=503, PETRI_TRANSITIONS=484} [2024-06-28 01:01:00,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-28 01:01:00,628 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 484 transitions, 8008 flow [2024-06-28 01:01:00,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:00,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:00,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:01:00,628 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 01:01:00,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 755037500, now seen corresponding path program 1 times [2024-06-28 01:01:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:00,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209481267] [2024-06-28 01:01:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:01:02,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:02,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209481267] [2024-06-28 01:01:02,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209481267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:02,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:02,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:02,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139944276] [2024-06-28 01:01:02,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:02,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:02,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:02,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:02,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:02,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:02,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 484 transitions, 8008 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:02,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:02,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:02,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:05,313 INFO L124 PetriNetUnfolderBase]: 4210/8222 cut-off events. [2024-06-28 01:01:05,313 INFO L125 PetriNetUnfolderBase]: For 505266/505266 co-relation queries the response was YES. [2024-06-28 01:01:05,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49948 conditions, 8222 events. 4210/8222 cut-off events. For 505266/505266 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 67444 event pairs, 1911 based on Foata normal form. 8/7903 useless extension candidates. Maximal degree in co-relation 49695. Up to 7069 conditions per place. [2024-06-28 01:01:05,461 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 418 selfloop transitions, 97 changer transitions 0/522 dead transitions. [2024-06-28 01:01:05,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 522 transitions, 9389 flow [2024-06-28 01:01:05,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:01:05,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:01:05,463 INFO L175 Difference]: Start difference. First operand has 503 places, 484 transitions, 8008 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:01:05,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 522 transitions, 9389 flow [2024-06-28 01:01:10,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 522 transitions, 9177 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:10,852 INFO L231 Difference]: Finished difference. Result has 506 places, 486 transitions, 8158 flow [2024-06-28 01:01:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7796, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8158, PETRI_PLACES=506, PETRI_TRANSITIONS=486} [2024-06-28 01:01:10,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 465 predicate places. [2024-06-28 01:01:10,852 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 486 transitions, 8158 flow [2024-06-28 01:01:10,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:10,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:10,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:10,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:01:10,853 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 01:01:10,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash 755029781, now seen corresponding path program 8 times [2024-06-28 01:01:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:10,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837033071] [2024-06-28 01:01:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:12,720 INFO 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 01:01:12,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:12,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837033071] [2024-06-28 01:01:12,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837033071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:12,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:12,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:12,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579298499] [2024-06-28 01:01:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:12,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:12,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:12,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:12,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 486 transitions, 8158 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:12,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:12,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:12,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:16,023 INFO L124 PetriNetUnfolderBase]: 4282/8365 cut-off events. [2024-06-28 01:01:16,023 INFO L125 PetriNetUnfolderBase]: For 573389/573389 co-relation queries the response was YES. [2024-06-28 01:01:16,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51194 conditions, 8365 events. 4282/8365 cut-off events. For 573389/573389 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 68984 event pairs, 1933 based on Foata normal form. 12/8047 useless extension candidates. Maximal degree in co-relation 50940. Up to 7279 conditions per place. [2024-06-28 01:01:16,131 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 420 selfloop transitions, 100 changer transitions 0/527 dead transitions. [2024-06-28 01:01:16,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 527 transitions, 9789 flow [2024-06-28 01:01:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:16,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:01:16,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:01:16,133 INFO L175 Difference]: Start difference. First operand has 506 places, 486 transitions, 8158 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:01:16,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 527 transitions, 9789 flow [2024-06-28 01:01:21,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 527 transitions, 9353 flow, removed 125 selfloop flow, removed 9 redundant places. [2024-06-28 01:01:21,606 INFO L231 Difference]: Finished difference. Result has 509 places, 490 transitions, 8355 flow [2024-06-28 01:01:21,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7846, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8355, PETRI_PLACES=509, PETRI_TRANSITIONS=490} [2024-06-28 01:01:21,607 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-28 01:01:21,607 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 490 transitions, 8355 flow [2024-06-28 01:01:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:21,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:21,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:01:21,607 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 01:01:21,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:21,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2065916571, now seen corresponding path program 9 times [2024-06-28 01:01:21,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:21,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8658300] [2024-06-28 01:01:21,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:21,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:23,104 INFO 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 01:01:23,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:23,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8658300] [2024-06-28 01:01:23,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8658300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:23,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:23,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542504133] [2024-06-28 01:01:23,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:23,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:23,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:23,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:23,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:23,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 490 transitions, 8355 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:23,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:23,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:23,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:26,613 INFO L124 PetriNetUnfolderBase]: 4342/8542 cut-off events. [2024-06-28 01:01:26,613 INFO L125 PetriNetUnfolderBase]: For 509201/509201 co-relation queries the response was YES. [2024-06-28 01:01:26,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51580 conditions, 8542 events. 4342/8542 cut-off events. For 509201/509201 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 70945 event pairs, 2005 based on Foata normal form. 6/8206 useless extension candidates. Maximal degree in co-relation 51324. Up to 6929 conditions per place. [2024-06-28 01:01:26,725 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 434 selfloop transitions, 89 changer transitions 0/530 dead transitions. [2024-06-28 01:01:26,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 530 transitions, 9748 flow [2024-06-28 01:01:26,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:01:26,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:01:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:01:26,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:01:26,727 INFO L175 Difference]: Start difference. First operand has 509 places, 490 transitions, 8355 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:01:26,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 530 transitions, 9748 flow [2024-06-28 01:01:32,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 530 transitions, 9251 flow, removed 155 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:32,856 INFO L231 Difference]: Finished difference. Result has 511 places, 490 transitions, 8040 flow [2024-06-28 01:01:32,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7858, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8040, PETRI_PLACES=511, PETRI_TRANSITIONS=490} [2024-06-28 01:01:32,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 470 predicate places. [2024-06-28 01:01:32,856 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 490 transitions, 8040 flow [2024-06-28 01:01:32,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:32,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:32,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:32,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:01:32,857 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 01:01:32,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2071278951, now seen corresponding path program 10 times [2024-06-28 01:01:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113992713] [2024-06-28 01:01:32,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:34,303 INFO 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 01:01:34,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:34,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113992713] [2024-06-28 01:01:34,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113992713] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:34,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:34,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:34,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442377265] [2024-06-28 01:01:34,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:34,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:34,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:34,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 490 transitions, 8040 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:34,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:34,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:34,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:37,960 INFO L124 PetriNetUnfolderBase]: 4390/8666 cut-off events. [2024-06-28 01:01:37,960 INFO L125 PetriNetUnfolderBase]: For 505802/505802 co-relation queries the response was YES. [2024-06-28 01:01:38,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51623 conditions, 8666 events. 4390/8666 cut-off events. For 505802/505802 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 72451 event pairs, 2049 based on Foata normal form. 6/8318 useless extension candidates. Maximal degree in co-relation 51366. Up to 7553 conditions per place. [2024-06-28 01:01:38,079 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 446 selfloop transitions, 83 changer transitions 0/536 dead transitions. [2024-06-28 01:01:38,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 536 transitions, 9519 flow [2024-06-28 01:01:38,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:38,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:01:38,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:01:38,081 INFO L175 Difference]: Start difference. First operand has 511 places, 490 transitions, 8040 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:01:38,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 536 transitions, 9519 flow [2024-06-28 01:01:44,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 536 transitions, 9337 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:44,390 INFO L231 Difference]: Finished difference. Result has 515 places, 491 transitions, 8110 flow [2024-06-28 01:01:44,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7858, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8110, PETRI_PLACES=515, PETRI_TRANSITIONS=491} [2024-06-28 01:01:44,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 474 predicate places. [2024-06-28 01:01:44,391 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 491 transitions, 8110 flow [2024-06-28 01:01:44,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:44,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:44,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:01:44,391 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 01:01:44,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:44,392 INFO L85 PathProgramCache]: Analyzing trace with hash 484744405, now seen corresponding path program 11 times [2024-06-28 01:01:44,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:44,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453818445] [2024-06-28 01:01:44,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:44,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:45,840 INFO 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 01:01:45,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453818445] [2024-06-28 01:01:45,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453818445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:45,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:45,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:01:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630314328] [2024-06-28 01:01:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:01:45,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:01:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:01:45,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:45,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 491 transitions, 8110 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:45,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:45,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:45,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:01:49,164 INFO L124 PetriNetUnfolderBase]: 4379/8622 cut-off events. [2024-06-28 01:01:49,164 INFO L125 PetriNetUnfolderBase]: For 444349/444349 co-relation queries the response was YES. [2024-06-28 01:01:49,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50798 conditions, 8622 events. 4379/8622 cut-off events. For 444349/444349 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 71862 event pairs, 1997 based on Foata normal form. 6/8279 useless extension candidates. Maximal degree in co-relation 50539. Up to 7538 conditions per place. [2024-06-28 01:01:49,278 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 428 selfloop transitions, 91 changer transitions 0/526 dead transitions. [2024-06-28 01:01:49,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 526 transitions, 9376 flow [2024-06-28 01:01:49,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:01:49,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:01:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:01:49,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-28 01:01:49,279 INFO L175 Difference]: Start difference. First operand has 515 places, 491 transitions, 8110 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:01:49,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 526 transitions, 9376 flow [2024-06-28 01:01:55,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 526 transitions, 9076 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-28 01:01:55,330 INFO L231 Difference]: Finished difference. Result has 519 places, 492 transitions, 8080 flow [2024-06-28 01:01:55,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7810, PETRI_DIFFERENCE_MINUEND_PLACES=507, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8080, PETRI_PLACES=519, PETRI_TRANSITIONS=492} [2024-06-28 01:01:55,331 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 478 predicate places. [2024-06-28 01:01:55,331 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 492 transitions, 8080 flow [2024-06-28 01:01:55,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:55,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:01:55,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:01:55,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:01:55,332 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 01:01:55,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:01:55,332 INFO L85 PathProgramCache]: Analyzing trace with hash 484542595, now seen corresponding path program 12 times [2024-06-28 01:01:55,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:01:55,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617331012] [2024-06-28 01:01:55,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:01:55,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:01:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:01:57,031 INFO 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 01:01:57,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:01:57,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617331012] [2024-06-28 01:01:57,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617331012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:01:57,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:01:57,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:01:57,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355413557] [2024-06-28 01:01:57,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:01:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:01:57,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:01:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:01:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:01:57,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:01:57,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 492 transitions, 8080 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:01:57,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:01:57,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:01:57,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:00,579 INFO L124 PetriNetUnfolderBase]: 4423/8719 cut-off events. [2024-06-28 01:02:00,579 INFO L125 PetriNetUnfolderBase]: For 449856/449856 co-relation queries the response was YES. [2024-06-28 01:02:00,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51273 conditions, 8719 events. 4423/8719 cut-off events. For 449856/449856 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 72923 event pairs, 2016 based on Foata normal form. 6/8376 useless extension candidates. Maximal degree in co-relation 51012. Up to 7564 conditions per place. [2024-06-28 01:02:00,856 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 433 selfloop transitions, 91 changer transitions 0/531 dead transitions. [2024-06-28 01:02:00,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 531 transitions, 9572 flow [2024-06-28 01:02:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:00,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-28 01:02:00,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-28 01:02:00,858 INFO L175 Difference]: Start difference. First operand has 519 places, 492 transitions, 8080 flow. Second operand 11 states and 175 transitions. [2024-06-28 01:02:00,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 531 transitions, 9572 flow [2024-06-28 01:02:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 531 transitions, 9284 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-28 01:02:06,913 INFO L231 Difference]: Finished difference. Result has 522 places, 493 transitions, 8122 flow [2024-06-28 01:02:06,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8122, PETRI_PLACES=522, PETRI_TRANSITIONS=493} [2024-06-28 01:02:06,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 481 predicate places. [2024-06-28 01:02:06,914 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 493 transitions, 8122 flow [2024-06-28 01:02:06,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:06,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:06,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:06,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:02:06,915 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 01:02:06,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1040456347, now seen corresponding path program 13 times [2024-06-28 01:02:06,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:06,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548002257] [2024-06-28 01:02:06,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:06,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:08,680 INFO 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 01:02:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548002257] [2024-06-28 01:02:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548002257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:08,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:02:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229159230] [2024-06-28 01:02:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:02:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:02:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:02:08,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:02:08,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 493 transitions, 8122 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:08,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:08,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:02:08,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:02:12,505 INFO L124 PetriNetUnfolderBase]: 4483/8877 cut-off events. [2024-06-28 01:02:12,505 INFO L125 PetriNetUnfolderBase]: For 468914/468914 co-relation queries the response was YES. [2024-06-28 01:02:12,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51984 conditions, 8877 events. 4483/8877 cut-off events. For 468914/468914 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 74695 event pairs, 2063 based on Foata normal form. 6/8529 useless extension candidates. Maximal degree in co-relation 51722. Up to 6971 conditions per place. [2024-06-28 01:02:12,620 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 410 selfloop transitions, 119 changer transitions 0/536 dead transitions. [2024-06-28 01:02:12,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 536 transitions, 9666 flow [2024-06-28 01:02:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:02:12,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:02:12,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:02:12,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:02:12,621 INFO L175 Difference]: Start difference. First operand has 522 places, 493 transitions, 8122 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:02:12,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 536 transitions, 9666 flow [2024-06-28 01:02:18,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 536 transitions, 9346 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-28 01:02:18,495 INFO L231 Difference]: Finished difference. Result has 524 places, 494 transitions, 8190 flow [2024-06-28 01:02:18,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7802, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8190, PETRI_PLACES=524, PETRI_TRANSITIONS=494} [2024-06-28 01:02:18,496 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-28 01:02:18,496 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 494 transitions, 8190 flow [2024-06-28 01:02:18,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:18,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:02:18,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:02:18,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:02:18,497 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 01:02:18,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:02:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash 479180215, now seen corresponding path program 14 times [2024-06-28 01:02:18,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:02:18,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439647731] [2024-06-28 01:02:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:02:18,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:02:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:02:20,000 INFO 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 01:02:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:02:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439647731] [2024-06-28 01:02:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439647731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:02:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:02:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:02:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195989314] [2024-06-28 01:02:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:02:20,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:02:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:02:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:02:20,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:02:20,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:02:20,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 494 transitions, 8190 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:02:20,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:02:20,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:02:20,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand