./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:41:27,365 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:41:27,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:41:27,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:41:27,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:41:27,461 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:41:27,462 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:41:27,462 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:41:27,463 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:41:27,466 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:41:27,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:41:27,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:41:27,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:41:27,469 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:41:27,469 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:41:27,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:41:27,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:41:27,470 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:41:27,470 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:41:27,470 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:41:27,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:41:27,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:41:27,471 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:41:27,471 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:41:27,471 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:41:27,471 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:41:27,471 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:41:27,472 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:41:27,472 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:41:27,472 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:41:27,473 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:41:27,473 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:41:27,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:27,474 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:41:27,474 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:41:27,474 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:41:27,474 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:41:27,474 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:41:27,475 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:41:27,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:41:27,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:41:27,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:41:27,696 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:41:27,696 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:41:27,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 01:41:27,803 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:41:27,803 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:41:27,804 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:41:28,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:41:29,043 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:41:29,044 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:41:29,057 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39069d34a/1b33f919b3d649e194d9139cd62c5f1f/FLAGcd7a97bac [2024-06-28 01:41:29,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/39069d34a/1b33f919b3d649e194d9139cd62c5f1f [2024-06-28 01:41:29,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:41:29,075 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:41:29,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:29,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:41:29,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:41:29,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:27" (1/2) ... [2024-06-28 01:41:29,083 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7641ef4e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:29, skipping insertion in model container [2024-06-28 01:41:29,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:27" (1/2) ... [2024-06-28 01:41:29,085 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ab77a72 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:41:29, skipping insertion in model container [2024-06-28 01:41:29,085 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:29" (2/2) ... [2024-06-28 01:41:29,086 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7641ef4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29, skipping insertion in model container [2024-06-28 01:41:29,086 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:41:29" (2/2) ... [2024-06-28 01:41:29,086 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:41:29,141 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:41:29,142 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:41:29,142 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:41:29,143 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:41:29,143 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-28 01:41:29,179 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:41:29,334 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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] [2024-06-28 01:41:29,524 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:29,532 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:41:29,565 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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i[973,986] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:41:29,631 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:41:29,660 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:41:29,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29 WrapperNode [2024-06-28 01:41:29,663 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:41:29,664 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:29,664 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:41:29,664 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:41:29,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,683 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,729 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 127 [2024-06-28 01:41:29,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:41:29,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:41:29,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:41:29,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:41:29,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,762 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,779 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 01:41:29,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,787 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,788 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,789 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,792 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:41:29,793 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:41:29,793 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:41:29,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:41:29,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (1/1) ... [2024-06-28 01:41:29,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:41:29,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:41:29,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 01:41:29,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 01:41:29,854 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:41:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:41:29,855 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:41:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:41:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:41:29,856 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:41:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:41:29,856 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:41:29,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:41:29,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:41:29,858 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:41:29,951 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:41:29,953 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:41:30,218 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:41:30,219 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:41:30,325 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:41:30,325 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:41:30,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:30 BoogieIcfgContainer [2024-06-28 01:41:30,325 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:41:30,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:41:30,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:41:30,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:41:30,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:41:27" (1/4) ... [2024-06-28 01:41:30,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc39a6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:41:30, skipping insertion in model container [2024-06-28 01:41:30,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:41:29" (2/4) ... [2024-06-28 01:41:30,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc39a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:41:30, skipping insertion in model container [2024-06-28 01:41:30,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:41:29" (3/4) ... [2024-06-28 01:41:30,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23fc39a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:41:30, skipping insertion in model container [2024-06-28 01:41:30,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:41:30" (4/4) ... [2024-06-28 01:41:30,332 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 01:41:30,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:41:30,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:41:30,345 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:41:30,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:41:30,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 78 flow [2024-06-28 01:41:30,446 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-06-28 01:41:30,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:30,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-28 01:41:30,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 78 flow [2024-06-28 01:41:30,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 33 transitions, 72 flow [2024-06-28 01:41:30,462 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:41:30,471 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;@5a4e2f51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:41:30,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:41:30,475 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:41:30,475 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:41:30,475 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:41:30,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:30,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:41:30,477 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 306675205, now seen corresponding path program 1 times [2024-06-28 01:41:30,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:30,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318735563] [2024-06-28 01:41:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:30,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:31,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:31,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318735563] [2024-06-28 01:41:31,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318735563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:31,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:31,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:31,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193798072] [2024-06-28 01:41:31,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:31,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:31,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:31,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-28 01:41:31,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:31,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:31,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-28 01:41:31,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:31,389 INFO L124 PetriNetUnfolderBase]: 461/899 cut-off events. [2024-06-28 01:41:31,389 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:41:31,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1689 conditions, 899 events. 461/899 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4874 event pairs, 356 based on Foata normal form. 37/842 useless extension candidates. Maximal degree in co-relation 1678. Up to 762 conditions per place. [2024-06-28 01:41:31,398 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-06-28 01:41:31,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 167 flow [2024-06-28 01:41:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:41:31,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:41:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-06-28 01:41:31,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-06-28 01:41:31,409 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2024-06-28 01:41:31,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 167 flow [2024-06-28 01:41:31,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:31,413 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 96 flow [2024-06-28 01:41:31,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-06-28 01:41:31,417 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-28 01:41:31,417 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 96 flow [2024-06-28 01:41:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:31,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:31,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:41:31,418 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:31,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1637084560, now seen corresponding path program 1 times [2024-06-28 01:41:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355636520] [2024-06-28 01:41:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:31,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:31,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355636520] [2024-06-28 01:41:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355636520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:41:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019522669] [2024-06-28 01:41:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:41:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:31,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:41:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:41:31,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-28 01:41:31,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 96 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 01:41:31,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:31,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-28 01:41:31,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:31,958 INFO L124 PetriNetUnfolderBase]: 539/907 cut-off events. [2024-06-28 01:41:31,958 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-28 01:41:31,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2040 conditions, 907 events. 539/907 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4328 event pairs, 213 based on Foata normal form. 2/859 useless extension candidates. Maximal degree in co-relation 2028. Up to 867 conditions per place. [2024-06-28 01:41:31,964 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 41 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-06-28 01:41:31,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 56 transitions, 242 flow [2024-06-28 01:41:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:41:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:41:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-06-28 01:41:31,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-06-28 01:41:31,967 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 96 flow. Second operand 4 states and 90 transitions. [2024-06-28 01:41:31,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 56 transitions, 242 flow [2024-06-28 01:41:31,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:31,970 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 130 flow [2024-06-28 01:41:31,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:41:31,970 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2024-06-28 01:41:31,971 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 130 flow [2024-06-28 01:41:31,971 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 01:41:31,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:31,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:31,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:41:31,972 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:31,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:31,974 INFO L85 PathProgramCache]: Analyzing trace with hash 789987418, now seen corresponding path program 1 times [2024-06-28 01:41:31,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:31,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618570818] [2024-06-28 01:41:31,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:31,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:32,348 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 01:41:32,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:32,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618570818] [2024-06-28 01:41:32,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618570818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:32,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:41:32,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712945563] [2024-06-28 01:41:32,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:41:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:41:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:41:32,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-28 01:41:32,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 130 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 01:41:32,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:32,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-28 01:41:32,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:32,535 INFO L124 PetriNetUnfolderBase]: 531/1015 cut-off events. [2024-06-28 01:41:32,536 INFO L125 PetriNetUnfolderBase]: For 349/349 co-relation queries the response was YES. [2024-06-28 01:41:32,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2326 conditions, 1015 events. 531/1015 cut-off events. For 349/349 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5453 event pairs, 173 based on Foata normal form. 4/931 useless extension candidates. Maximal degree in co-relation 2312. Up to 838 conditions per place. [2024-06-28 01:41:32,540 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 48 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2024-06-28 01:41:32,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 69 transitions, 354 flow [2024-06-28 01:41:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:41:32,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:41:32,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 107 transitions. [2024-06-28 01:41:32,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2024-06-28 01:41:32,542 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 130 flow. Second operand 5 states and 107 transitions. [2024-06-28 01:41:32,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 69 transitions, 354 flow [2024-06-28 01:41:32,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 328 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:32,544 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 227 flow [2024-06-28 01:41:32,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2024-06-28 01:41:32,545 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-06-28 01:41:32,545 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 227 flow [2024-06-28 01:41:32,545 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 01:41:32,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:32,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:32,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:41:32,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:32,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:32,546 INFO L85 PathProgramCache]: Analyzing trace with hash 765930865, now seen corresponding path program 1 times [2024-06-28 01:41:32,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191604872] [2024-06-28 01:41:32,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:32,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:32,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:32,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:32,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191604872] [2024-06-28 01:41:32,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191604872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:32,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:32,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:41:32,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662435514] [2024-06-28 01:41:32,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:32,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:41:32,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:32,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:41:32,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:41:32,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2024-06-28 01:41:32,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 227 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 01:41:32,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:32,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2024-06-28 01:41:32,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:32,685 INFO L124 PetriNetUnfolderBase]: 185/485 cut-off events. [2024-06-28 01:41:32,686 INFO L125 PetriNetUnfolderBase]: For 266/292 co-relation queries the response was YES. [2024-06-28 01:41:32,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1062 conditions, 485 events. 185/485 cut-off events. For 266/292 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2899 event pairs, 80 based on Foata normal form. 10/462 useless extension candidates. Maximal degree in co-relation 1045. Up to 286 conditions per place. [2024-06-28 01:41:32,688 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 25 selfloop transitions, 7 changer transitions 0/52 dead transitions. [2024-06-28 01:41:32,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 52 transitions, 266 flow [2024-06-28 01:41:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:41:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:41:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:41:32,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7238095238095238 [2024-06-28 01:41:32,690 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 227 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:41:32,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 52 transitions, 266 flow [2024-06-28 01:41:32,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 52 transitions, 262 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:41:32,692 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 194 flow [2024-06-28 01:41:32,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-06-28 01:41:32,693 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 10 predicate places. [2024-06-28 01:41:32,693 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 194 flow [2024-06-28 01:41:32,693 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 01:41:32,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:32,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:32,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:41:32,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:32,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:32,694 INFO L85 PathProgramCache]: Analyzing trace with hash -257322019, now seen corresponding path program 1 times [2024-06-28 01:41:32,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:32,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397671169] [2024-06-28 01:41:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:32,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:33,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:33,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397671169] [2024-06-28 01:41:33,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397671169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:33,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:33,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:33,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058877223] [2024-06-28 01:41:33,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:33,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:33,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:33,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 35 [2024-06-28 01:41:33,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 194 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 01:41:33,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:33,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 35 [2024-06-28 01:41:33,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:33,610 INFO L124 PetriNetUnfolderBase]: 449/863 cut-off events. [2024-06-28 01:41:33,610 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2024-06-28 01:41:33,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2124 conditions, 863 events. 449/863 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4389 event pairs, 96 based on Foata normal form. 4/830 useless extension candidates. Maximal degree in co-relation 2105. Up to 678 conditions per place. [2024-06-28 01:41:33,614 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 47 selfloop transitions, 12 changer transitions 1/68 dead transitions. [2024-06-28 01:41:33,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 372 flow [2024-06-28 01:41:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:33,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 01:41:33,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-28 01:41:33,617 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 194 flow. Second operand 6 states and 118 transitions. [2024-06-28 01:41:33,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 372 flow [2024-06-28 01:41:33,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:33,622 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 215 flow [2024-06-28 01:41:33,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=215, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 01:41:33,626 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-06-28 01:41:33,626 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 215 flow [2024-06-28 01:41:33,626 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 01:41:33,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:33,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:41:33,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:33,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1619566511, now seen corresponding path program 1 times [2024-06-28 01:41:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245325068] [2024-06-28 01:41:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:34,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245325068] [2024-06-28 01:41:34,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245325068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:41:34,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409254777] [2024-06-28 01:41:34,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:41:34,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:41:34,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:41:34,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-28 01:41:34,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 215 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:34,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-28 01:41:34,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:34,197 INFO L124 PetriNetUnfolderBase]: 370/753 cut-off events. [2024-06-28 01:41:34,197 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-28 01:41:34,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 753 events. 370/753 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3841 event pairs, 226 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 1911. Up to 608 conditions per place. [2024-06-28 01:41:34,201 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 46 selfloop transitions, 9 changer transitions 0/62 dead transitions. [2024-06-28 01:41:34,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 396 flow [2024-06-28 01:41:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:41:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:41:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-28 01:41:34,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:41:34,203 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 215 flow. Second operand 6 states and 95 transitions. [2024-06-28 01:41:34,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 396 flow [2024-06-28 01:41:34,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 361 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:34,206 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 265 flow [2024-06-28 01:41:34,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=265, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:41:34,209 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 16 predicate places. [2024-06-28 01:41:34,209 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 265 flow [2024-06-28 01:41:34,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:34,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:34,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:41:34,210 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:34,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 247476840, now seen corresponding path program 1 times [2024-06-28 01:41:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721603387] [2024-06-28 01:41:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:34,650 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 01:41:34,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:34,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721603387] [2024-06-28 01:41:34,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721603387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:34,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:34,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:34,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125185462] [2024-06-28 01:41:34,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:34,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:34,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:34,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:34,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:34,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:34,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 265 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 01:41:34,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:34,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:34,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:34,917 INFO L124 PetriNetUnfolderBase]: 477/932 cut-off events. [2024-06-28 01:41:34,917 INFO L125 PetriNetUnfolderBase]: For 975/975 co-relation queries the response was YES. [2024-06-28 01:41:34,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2511 conditions, 932 events. 477/932 cut-off events. For 975/975 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4721 event pairs, 260 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 2486. Up to 760 conditions per place. [2024-06-28 01:41:34,921 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 58 selfloop transitions, 16 changer transitions 0/80 dead transitions. [2024-06-28 01:41:34,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 513 flow [2024-06-28 01:41:34,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:34,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:34,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 01:41:34,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-06-28 01:41:34,923 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 265 flow. Second operand 7 states and 113 transitions. [2024-06-28 01:41:34,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 513 flow [2024-06-28 01:41:34,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 80 transitions, 509 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:34,927 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 376 flow [2024-06-28 01:41:34,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-06-28 01:41:34,928 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-06-28 01:41:34,928 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 376 flow [2024-06-28 01:41:34,928 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 01:41:34,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:34,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:34,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:41:34,929 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:34,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:34,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1619534158, now seen corresponding path program 2 times [2024-06-28 01:41:34,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:34,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980633356] [2024-06-28 01:41:34,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:34,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980633356] [2024-06-28 01:41:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980633356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:35,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:35,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557502141] [2024-06-28 01:41:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:35,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:35,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 376 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 01:41:35,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:35,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:35,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:35,599 INFO L124 PetriNetUnfolderBase]: 503/964 cut-off events. [2024-06-28 01:41:35,600 INFO L125 PetriNetUnfolderBase]: For 1587/1587 co-relation queries the response was YES. [2024-06-28 01:41:35,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2973 conditions, 964 events. 503/964 cut-off events. For 1587/1587 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4845 event pairs, 256 based on Foata normal form. 1/927 useless extension candidates. Maximal degree in co-relation 2943. Up to 793 conditions per place. [2024-06-28 01:41:35,605 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 56 selfloop transitions, 21 changer transitions 0/83 dead transitions. [2024-06-28 01:41:35,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 638 flow [2024-06-28 01:41:35,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-28 01:41:35,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43673469387755104 [2024-06-28 01:41:35,606 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 376 flow. Second operand 7 states and 107 transitions. [2024-06-28 01:41:35,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 638 flow [2024-06-28 01:41:35,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 83 transitions, 619 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:35,610 INFO L231 Difference]: Finished difference. Result has 68 places, 69 transitions, 477 flow [2024-06-28 01:41:35,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=68, PETRI_TRANSITIONS=69} [2024-06-28 01:41:35,612 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-06-28 01:41:35,612 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 69 transitions, 477 flow [2024-06-28 01:41:35,612 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 01:41:35,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:35,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:35,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:41:35,612 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:35,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1625277838, now seen corresponding path program 3 times [2024-06-28 01:41:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:35,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462815411] [2024-06-28 01:41:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:35,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:36,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:36,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462815411] [2024-06-28 01:41:36,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462815411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:36,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:36,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:41:36,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536970612] [2024-06-28 01:41:36,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:36,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:41:36,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:36,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:41:36,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:41:36,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:36,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 69 transitions, 477 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 01:41:36,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:36,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:36,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:36,306 INFO L124 PetriNetUnfolderBase]: 506/978 cut-off events. [2024-06-28 01:41:36,306 INFO L125 PetriNetUnfolderBase]: For 2064/2064 co-relation queries the response was YES. [2024-06-28 01:41:36,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 978 events. 506/978 cut-off events. For 2064/2064 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4998 event pairs, 248 based on Foata normal form. 1/936 useless extension candidates. Maximal degree in co-relation 3170. Up to 765 conditions per place. [2024-06-28 01:41:36,312 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 58 selfloop transitions, 26 changer transitions 0/90 dead transitions. [2024-06-28 01:41:36,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 90 transitions, 732 flow [2024-06-28 01:41:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-06-28 01:41:36,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4448979591836735 [2024-06-28 01:41:36,314 INFO L175 Difference]: Start difference. First operand has 68 places, 69 transitions, 477 flow. Second operand 7 states and 109 transitions. [2024-06-28 01:41:36,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 90 transitions, 732 flow [2024-06-28 01:41:36,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 90 transitions, 713 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:36,319 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 558 flow [2024-06-28 01:41:36,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=558, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-06-28 01:41:36,320 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2024-06-28 01:41:36,320 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 558 flow [2024-06-28 01:41:36,320 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 01:41:36,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:36,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:36,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:41:36,322 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:36,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:36,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1625286766, now seen corresponding path program 1 times [2024-06-28 01:41:36,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:36,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384804243] [2024-06-28 01:41:36,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:36,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:36,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:36,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384804243] [2024-06-28 01:41:36,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384804243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:36,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:36,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:36,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788608808] [2024-06-28 01:41:36,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:36,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:36,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:36,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:36,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:36,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:36,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 558 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:36,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:36,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:36,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:37,174 INFO L124 PetriNetUnfolderBase]: 509/980 cut-off events. [2024-06-28 01:41:37,174 INFO L125 PetriNetUnfolderBase]: For 2713/2713 co-relation queries the response was YES. [2024-06-28 01:41:37,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3426 conditions, 980 events. 509/980 cut-off events. For 2713/2713 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5003 event pairs, 266 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 3391. Up to 802 conditions per place. [2024-06-28 01:41:37,180 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 79 selfloop transitions, 13 changer transitions 0/98 dead transitions. [2024-06-28 01:41:37,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 98 transitions, 836 flow [2024-06-28 01:41:37,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:37,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 01:41:37,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-06-28 01:41:37,182 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 558 flow. Second operand 7 states and 113 transitions. [2024-06-28 01:41:37,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 98 transitions, 836 flow [2024-06-28 01:41:37,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 98 transitions, 807 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:37,189 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 581 flow [2024-06-28 01:41:37,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=581, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2024-06-28 01:41:37,191 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2024-06-28 01:41:37,191 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 581 flow [2024-06-28 01:41:37,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:37,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:41:37,192 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:37,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash -248123470, now seen corresponding path program 1 times [2024-06-28 01:41:37,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:37,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754253691] [2024-06-28 01:41:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:37,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754253691] [2024-06-28 01:41:37,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754253691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:37,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:37,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:37,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537782206] [2024-06-28 01:41:37,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:37,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:37,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:37,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:37,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 581 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:37,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:37,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:37,834 INFO L124 PetriNetUnfolderBase]: 540/1029 cut-off events. [2024-06-28 01:41:37,834 INFO L125 PetriNetUnfolderBase]: For 3045/3045 co-relation queries the response was YES. [2024-06-28 01:41:37,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3754 conditions, 1029 events. 540/1029 cut-off events. For 3045/3045 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5228 event pairs, 148 based on Foata normal form. 2/988 useless extension candidates. Maximal degree in co-relation 3717. Up to 796 conditions per place. [2024-06-28 01:41:37,841 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 75 selfloop transitions, 33 changer transitions 0/114 dead transitions. [2024-06-28 01:41:37,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 114 transitions, 946 flow [2024-06-28 01:41:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:41:37,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-06-28 01:41:37,842 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 581 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:41:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 114 transitions, 946 flow [2024-06-28 01:41:37,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 114 transitions, 888 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:37,847 INFO L231 Difference]: Finished difference. Result has 82 places, 88 transitions, 694 flow [2024-06-28 01:41:37,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=694, PETRI_PLACES=82, PETRI_TRANSITIONS=88} [2024-06-28 01:41:37,848 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 43 predicate places. [2024-06-28 01:41:37,848 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 88 transitions, 694 flow [2024-06-28 01:41:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:37,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:37,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:41:37,849 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:37,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -936781566, now seen corresponding path program 2 times [2024-06-28 01:41:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:37,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148402099] [2024-06-28 01:41:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:38,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:38,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148402099] [2024-06-28 01:41:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148402099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:38,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:38,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755288787] [2024-06-28 01:41:38,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:38,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:38,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:38,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 88 transitions, 694 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:38,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:38,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:38,571 INFO L124 PetriNetUnfolderBase]: 602/1126 cut-off events. [2024-06-28 01:41:38,571 INFO L125 PetriNetUnfolderBase]: For 4320/4320 co-relation queries the response was YES. [2024-06-28 01:41:38,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4587 conditions, 1126 events. 602/1126 cut-off events. For 4320/4320 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5729 event pairs, 167 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 4548. Up to 858 conditions per place. [2024-06-28 01:41:38,579 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 83 selfloop transitions, 46 changer transitions 0/135 dead transitions. [2024-06-28 01:41:38,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 135 transitions, 1252 flow [2024-06-28 01:41:38,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:38,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:41:38,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:41:38,581 INFO L175 Difference]: Start difference. First operand has 82 places, 88 transitions, 694 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:41:38,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 135 transitions, 1252 flow [2024-06-28 01:41:38,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 135 transitions, 1160 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:38,588 INFO L231 Difference]: Finished difference. Result has 90 places, 110 transitions, 968 flow [2024-06-28 01:41:38,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=968, PETRI_PLACES=90, PETRI_TRANSITIONS=110} [2024-06-28 01:41:38,589 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 51 predicate places. [2024-06-28 01:41:38,589 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 110 transitions, 968 flow [2024-06-28 01:41:38,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:38,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:38,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:41:38,590 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:38,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash 128547603, now seen corresponding path program 1 times [2024-06-28 01:41:38,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:38,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447860650] [2024-06-28 01:41:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:38,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:38,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:38,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:38,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447860650] [2024-06-28 01:41:38,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447860650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:38,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:38,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:38,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728662940] [2024-06-28 01:41:38,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:38,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:38,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:38,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:38,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:38,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:38,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 110 transitions, 968 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:38,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:38,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:38,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:39,249 INFO L124 PetriNetUnfolderBase]: 615/1148 cut-off events. [2024-06-28 01:41:39,249 INFO L125 PetriNetUnfolderBase]: For 5343/5343 co-relation queries the response was YES. [2024-06-28 01:41:39,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4971 conditions, 1148 events. 615/1148 cut-off events. For 5343/5343 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5876 event pairs, 211 based on Foata normal form. 1/1107 useless extension candidates. Maximal degree in co-relation 4928. Up to 946 conditions per place. [2024-06-28 01:41:39,258 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 107 selfloop transitions, 24 changer transitions 0/137 dead transitions. [2024-06-28 01:41:39,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 137 transitions, 1364 flow [2024-06-28 01:41:39,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:39,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 01:41:39,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 01:41:39,259 INFO L175 Difference]: Start difference. First operand has 90 places, 110 transitions, 968 flow. Second operand 8 states and 129 transitions. [2024-06-28 01:41:39,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 137 transitions, 1364 flow [2024-06-28 01:41:39,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 137 transitions, 1310 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:41:39,267 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 986 flow [2024-06-28 01:41:39,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=986, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2024-06-28 01:41:39,268 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 56 predicate places. [2024-06-28 01:41:39,268 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 986 flow [2024-06-28 01:41:39,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:39,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:39,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:39,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:41:39,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:39,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:39,269 INFO L85 PathProgramCache]: Analyzing trace with hash -918786066, now seen corresponding path program 3 times [2024-06-28 01:41:39,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:39,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340359919] [2024-06-28 01:41:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:39,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:39,619 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 01:41:39,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:39,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340359919] [2024-06-28 01:41:39,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340359919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:39,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:39,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:39,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135170929] [2024-06-28 01:41:39,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:39,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:39,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:39,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:39,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:39,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 112 transitions, 986 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:39,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:39,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:39,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:39,924 INFO L124 PetriNetUnfolderBase]: 651/1198 cut-off events. [2024-06-28 01:41:39,925 INFO L125 PetriNetUnfolderBase]: For 6233/6233 co-relation queries the response was YES. [2024-06-28 01:41:39,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 1198 events. 651/1198 cut-off events. For 6233/6233 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6070 event pairs, 158 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 5298. Up to 868 conditions per place. [2024-06-28 01:41:39,935 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 92 selfloop transitions, 53 changer transitions 0/151 dead transitions. [2024-06-28 01:41:39,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 151 transitions, 1560 flow [2024-06-28 01:41:39,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:39,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:41:39,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928571428571429 [2024-06-28 01:41:39,937 INFO L175 Difference]: Start difference. First operand has 95 places, 112 transitions, 986 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:41:39,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 151 transitions, 1560 flow [2024-06-28 01:41:39,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 151 transitions, 1500 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:39,948 INFO L231 Difference]: Finished difference. Result has 98 places, 123 transitions, 1198 flow [2024-06-28 01:41:39,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1198, PETRI_PLACES=98, PETRI_TRANSITIONS=123} [2024-06-28 01:41:39,948 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 59 predicate places. [2024-06-28 01:41:39,948 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 123 transitions, 1198 flow [2024-06-28 01:41:39,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:39,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:39,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:39,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:41:39,949 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:39,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1163351058, now seen corresponding path program 4 times [2024-06-28 01:41:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159217893] [2024-06-28 01:41:39,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:39,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159217893] [2024-06-28 01:41:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159217893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:40,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:40,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:40,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238954685] [2024-06-28 01:41:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:40,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:40,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:40,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 123 transitions, 1198 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:40,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:40,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:40,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:40,704 INFO L124 PetriNetUnfolderBase]: 671/1234 cut-off events. [2024-06-28 01:41:40,704 INFO L125 PetriNetUnfolderBase]: For 7786/7786 co-relation queries the response was YES. [2024-06-28 01:41:40,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 1234 events. 671/1234 cut-off events. For 7786/7786 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6341 event pairs, 147 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 5843. Up to 927 conditions per place. [2024-06-28 01:41:40,712 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 89 selfloop transitions, 53 changer transitions 0/148 dead transitions. [2024-06-28 01:41:40,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 148 transitions, 1622 flow [2024-06-28 01:41:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:40,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:41:40,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:41:40,713 INFO L175 Difference]: Start difference. First operand has 98 places, 123 transitions, 1198 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:41:40,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 148 transitions, 1622 flow [2024-06-28 01:41:40,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 148 transitions, 1524 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:40,727 INFO L231 Difference]: Finished difference. Result has 100 places, 126 transitions, 1268 flow [2024-06-28 01:41:40,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1268, PETRI_PLACES=100, PETRI_TRANSITIONS=126} [2024-06-28 01:41:40,727 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2024-06-28 01:41:40,727 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 126 transitions, 1268 flow [2024-06-28 01:41:40,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:40,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:40,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:40,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:41:40,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:40,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:40,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1163345261, now seen corresponding path program 2 times [2024-06-28 01:41:40,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:40,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938862550] [2024-06-28 01:41:40,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:40,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:41,093 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 01:41:41,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:41,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938862550] [2024-06-28 01:41:41,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938862550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:41,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:41,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054112408] [2024-06-28 01:41:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:41,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:41,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:41,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 126 transitions, 1268 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:41,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:41,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:41,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:41,462 INFO L124 PetriNetUnfolderBase]: 684/1255 cut-off events. [2024-06-28 01:41:41,462 INFO L125 PetriNetUnfolderBase]: For 8634/8634 co-relation queries the response was YES. [2024-06-28 01:41:41,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 1255 events. 684/1255 cut-off events. For 8634/8634 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 6454 event pairs, 206 based on Foata normal form. 1/1213 useless extension candidates. Maximal degree in co-relation 6138. Up to 1027 conditions per place. [2024-06-28 01:41:41,469 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 115 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-28 01:41:41,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 151 transitions, 1707 flow [2024-06-28 01:41:41,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:41,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:41,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 01:41:41,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46530612244897956 [2024-06-28 01:41:41,471 INFO L175 Difference]: Start difference. First operand has 100 places, 126 transitions, 1268 flow. Second operand 7 states and 114 transitions. [2024-06-28 01:41:41,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 151 transitions, 1707 flow [2024-06-28 01:41:41,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 151 transitions, 1605 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:41,484 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1261 flow [2024-06-28 01:41:41,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1261, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-06-28 01:41:41,484 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2024-06-28 01:41:41,485 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1261 flow [2024-06-28 01:41:41,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:41,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:41,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:41,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:41:41,485 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:41,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:41,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1334047908, now seen corresponding path program 5 times [2024-06-28 01:41:41,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:41,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229833058] [2024-06-28 01:41:41,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:41,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:41,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229833058] [2024-06-28 01:41:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229833058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:41,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451847236] [2024-06-28 01:41:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:41,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:41,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1261 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:41,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:41,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:41,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:42,146 INFO L124 PetriNetUnfolderBase]: 720/1304 cut-off events. [2024-06-28 01:41:42,146 INFO L125 PetriNetUnfolderBase]: For 9895/9895 co-relation queries the response was YES. [2024-06-28 01:41:42,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6594 conditions, 1304 events. 720/1304 cut-off events. For 9895/9895 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6667 event pairs, 140 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 6546. Up to 914 conditions per place. [2024-06-28 01:41:42,158 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 95 selfloop transitions, 59 changer transitions 0/160 dead transitions. [2024-06-28 01:41:42,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 160 transitions, 1834 flow [2024-06-28 01:41:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:42,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:42,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:41:42,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2024-06-28 01:41:42,160 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1261 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:41:42,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 160 transitions, 1834 flow [2024-06-28 01:41:42,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 160 transitions, 1768 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:42,180 INFO L231 Difference]: Finished difference. Result has 105 places, 137 transitions, 1494 flow [2024-06-28 01:41:42,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1494, PETRI_PLACES=105, PETRI_TRANSITIONS=137} [2024-06-28 01:41:42,180 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 66 predicate places. [2024-06-28 01:41:42,180 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 137 transitions, 1494 flow [2024-06-28 01:41:42,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:42,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:42,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:42,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:41:42,181 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:42,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:42,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1329369791, now seen corresponding path program 3 times [2024-06-28 01:41:42,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:42,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646106181] [2024-06-28 01:41:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:42,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:42,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:42,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:42,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:42,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646106181] [2024-06-28 01:41:42,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646106181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:42,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:42,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:42,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944324054] [2024-06-28 01:41:42,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:42,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:42,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:42,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:42,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:42,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:42,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 137 transitions, 1494 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:42,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:42,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:42,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:42,955 INFO L124 PetriNetUnfolderBase]: 733/1338 cut-off events. [2024-06-28 01:41:42,956 INFO L125 PetriNetUnfolderBase]: For 12355/12355 co-relation queries the response was YES. [2024-06-28 01:41:42,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7194 conditions, 1338 events. 733/1338 cut-off events. For 12355/12355 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7005 event pairs, 233 based on Foata normal form. 1/1293 useless extension candidates. Maximal degree in co-relation 7144. Up to 1140 conditions per place. [2024-06-28 01:41:42,964 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 144 selfloop transitions, 12 changer transitions 0/162 dead transitions. [2024-06-28 01:41:42,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 1976 flow [2024-06-28 01:41:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:42,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 01:41:42,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46122448979591835 [2024-06-28 01:41:42,966 INFO L175 Difference]: Start difference. First operand has 105 places, 137 transitions, 1494 flow. Second operand 7 states and 113 transitions. [2024-06-28 01:41:42,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 1976 flow [2024-06-28 01:41:42,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1895 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:42,985 INFO L231 Difference]: Finished difference. Result has 108 places, 139 transitions, 1478 flow [2024-06-28 01:41:42,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1478, PETRI_PLACES=108, PETRI_TRANSITIONS=139} [2024-06-28 01:41:42,987 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2024-06-28 01:41:42,987 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 139 transitions, 1478 flow [2024-06-28 01:41:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:42,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:42,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:42,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:41:42,987 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:42,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:42,988 INFO L85 PathProgramCache]: Analyzing trace with hash 170664816, now seen corresponding path program 6 times [2024-06-28 01:41:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:42,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013451960] [2024-06-28 01:41:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:43,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:43,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:43,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013451960] [2024-06-28 01:41:43,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013451960] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:43,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:43,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:43,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201021080] [2024-06-28 01:41:43,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:43,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:43,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:43,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:43,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:43,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 139 transitions, 1478 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:43,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:43,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:43,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:43,764 INFO L124 PetriNetUnfolderBase]: 729/1322 cut-off events. [2024-06-28 01:41:43,765 INFO L125 PetriNetUnfolderBase]: For 11140/11140 co-relation queries the response was YES. [2024-06-28 01:41:43,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7035 conditions, 1322 events. 729/1322 cut-off events. For 11140/11140 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6871 event pairs, 138 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 6984. Up to 890 conditions per place. [2024-06-28 01:41:43,774 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 104 selfloop transitions, 64 changer transitions 0/174 dead transitions. [2024-06-28 01:41:43,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 174 transitions, 2124 flow [2024-06-28 01:41:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 01:41:43,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:41:43,776 INFO L175 Difference]: Start difference. First operand has 108 places, 139 transitions, 1478 flow. Second operand 7 states and 119 transitions. [2024-06-28 01:41:43,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 174 transitions, 2124 flow [2024-06-28 01:41:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 174 transitions, 2077 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:43,794 INFO L231 Difference]: Finished difference. Result has 112 places, 152 transitions, 1792 flow [2024-06-28 01:41:43,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1792, PETRI_PLACES=112, PETRI_TRANSITIONS=152} [2024-06-28 01:41:43,794 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2024-06-28 01:41:43,794 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 152 transitions, 1792 flow [2024-06-28 01:41:43,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:43,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:43,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:41:43,795 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:43,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1155993611, now seen corresponding path program 4 times [2024-06-28 01:41:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:43,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503805624] [2024-06-28 01:41:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:43,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:44,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:44,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503805624] [2024-06-28 01:41:44,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503805624] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:44,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:44,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:41:44,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321309991] [2024-06-28 01:41:44,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:44,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:41:44,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:41:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:41:44,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:44,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 152 transitions, 1792 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:44,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:44,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:44,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:44,539 INFO L124 PetriNetUnfolderBase]: 732/1338 cut-off events. [2024-06-28 01:41:44,540 INFO L125 PetriNetUnfolderBase]: For 13295/13295 co-relation queries the response was YES. [2024-06-28 01:41:44,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7585 conditions, 1338 events. 732/1338 cut-off events. For 13295/13295 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7045 event pairs, 195 based on Foata normal form. 1/1291 useless extension candidates. Maximal degree in co-relation 7531. Up to 1038 conditions per place. [2024-06-28 01:41:44,550 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 137 selfloop transitions, 38 changer transitions 0/181 dead transitions. [2024-06-28 01:41:44,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 181 transitions, 2391 flow [2024-06-28 01:41:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:44,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 01:41:44,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-28 01:41:44,551 INFO L175 Difference]: Start difference. First operand has 112 places, 152 transitions, 1792 flow. Second operand 8 states and 127 transitions. [2024-06-28 01:41:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 181 transitions, 2391 flow [2024-06-28 01:41:44,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 181 transitions, 2278 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-28 01:41:44,574 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1809 flow [2024-06-28 01:41:44,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1691, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1809, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-06-28 01:41:44,575 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 79 predicate places. [2024-06-28 01:41:44,575 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1809 flow [2024-06-28 01:41:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:44,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:44,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:41:44,576 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:44,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1158095365, now seen corresponding path program 1 times [2024-06-28 01:41:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726960861] [2024-06-28 01:41:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:45,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726960861] [2024-06-28 01:41:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726960861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438093312] [2024-06-28 01:41:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:45,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:45,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:45,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:45,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1809 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:45,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:45,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:45,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:45,573 INFO L124 PetriNetUnfolderBase]: 736/1345 cut-off events. [2024-06-28 01:41:45,573 INFO L125 PetriNetUnfolderBase]: For 13709/13709 co-relation queries the response was YES. [2024-06-28 01:41:45,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7713 conditions, 1345 events. 736/1345 cut-off events. For 13709/13709 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7055 event pairs, 231 based on Foata normal form. 2/1301 useless extension candidates. Maximal degree in co-relation 7657. Up to 1124 conditions per place. [2024-06-28 01:41:45,582 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 161 selfloop transitions, 17 changer transitions 0/184 dead transitions. [2024-06-28 01:41:45,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 184 transitions, 2348 flow [2024-06-28 01:41:45,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:45,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:45,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 01:41:45,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 01:41:45,583 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1809 flow. Second operand 8 states and 129 transitions. [2024-06-28 01:41:45,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 184 transitions, 2348 flow [2024-06-28 01:41:45,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 184 transitions, 2248 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:45,603 INFO L231 Difference]: Finished difference. Result has 120 places, 156 transitions, 1778 flow [2024-06-28 01:41:45,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1778, PETRI_PLACES=120, PETRI_TRANSITIONS=156} [2024-06-28 01:41:45,604 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2024-06-28 01:41:45,604 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 156 transitions, 1778 flow [2024-06-28 01:41:45,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:45,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:45,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:45,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:41:45,605 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:45,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:45,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1390431733, now seen corresponding path program 1 times [2024-06-28 01:41:45,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:45,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760530275] [2024-06-28 01:41:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:45,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:46,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760530275] [2024-06-28 01:41:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760530275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:46,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274876614] [2024-06-28 01:41:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:46,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:46,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:46,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:46,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:46,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 156 transitions, 1778 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:46,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:46,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:46,450 INFO L124 PetriNetUnfolderBase]: 761/1389 cut-off events. [2024-06-28 01:41:46,450 INFO L125 PetriNetUnfolderBase]: For 13547/13547 co-relation queries the response was YES. [2024-06-28 01:41:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7945 conditions, 1389 events. 761/1389 cut-off events. For 13547/13547 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7297 event pairs, 194 based on Foata normal form. 1/1342 useless extension candidates. Maximal degree in co-relation 7888. Up to 1085 conditions per place. [2024-06-28 01:41:46,461 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 133 selfloop transitions, 51 changer transitions 0/190 dead transitions. [2024-06-28 01:41:46,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 190 transitions, 2374 flow [2024-06-28 01:41:46,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:46,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:41:46,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:41:46,463 INFO L175 Difference]: Start difference. First operand has 120 places, 156 transitions, 1778 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:41:46,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 190 transitions, 2374 flow [2024-06-28 01:41:46,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 190 transitions, 2321 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:46,484 INFO L231 Difference]: Finished difference. Result has 123 places, 163 transitions, 1971 flow [2024-06-28 01:41:46,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1971, PETRI_PLACES=123, PETRI_TRANSITIONS=163} [2024-06-28 01:41:46,485 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 84 predicate places. [2024-06-28 01:41:46,485 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 163 transitions, 1971 flow [2024-06-28 01:41:46,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:46,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:46,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:41:46,486 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:46,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:46,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2058549165, now seen corresponding path program 1 times [2024-06-28 01:41:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895155548] [2024-06-28 01:41:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:46,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:46,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:46,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:46,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895155548] [2024-06-28 01:41:46,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895155548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:46,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:46,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:46,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876001903] [2024-06-28 01:41:46,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:46,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:46,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:46,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:46,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:46,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:46,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 163 transitions, 1971 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:46,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:46,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:46,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:47,266 INFO L124 PetriNetUnfolderBase]: 781/1415 cut-off events. [2024-06-28 01:41:47,267 INFO L125 PetriNetUnfolderBase]: For 14969/14969 co-relation queries the response was YES. [2024-06-28 01:41:47,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8331 conditions, 1415 events. 781/1415 cut-off events. For 14969/14969 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7457 event pairs, 146 based on Foata normal form. 2/1368 useless extension candidates. Maximal degree in co-relation 8272. Up to 1097 conditions per place. [2024-06-28 01:41:47,277 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 134 selfloop transitions, 56 changer transitions 0/196 dead transitions. [2024-06-28 01:41:47,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 196 transitions, 2545 flow [2024-06-28 01:41:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:47,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:47,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:41:47,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-28 01:41:47,278 INFO L175 Difference]: Start difference. First operand has 123 places, 163 transitions, 1971 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:41:47,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 196 transitions, 2545 flow [2024-06-28 01:41:47,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 196 transitions, 2455 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:47,300 INFO L231 Difference]: Finished difference. Result has 127 places, 166 transitions, 2050 flow [2024-06-28 01:41:47,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2050, PETRI_PLACES=127, PETRI_TRANSITIONS=166} [2024-06-28 01:41:47,301 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 88 predicate places. [2024-06-28 01:41:47,301 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 166 transitions, 2050 flow [2024-06-28 01:41:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:47,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:47,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:41:47,302 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:47,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:47,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1482935653, now seen corresponding path program 2 times [2024-06-28 01:41:47,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:47,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837599200] [2024-06-28 01:41:47,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:47,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:47,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:47,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837599200] [2024-06-28 01:41:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837599200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:47,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:47,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:47,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864706433] [2024-06-28 01:41:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:47,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:47,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:47,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:47,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:47,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 166 transitions, 2050 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:47,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:47,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:47,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:48,251 INFO L124 PetriNetUnfolderBase]: 793/1427 cut-off events. [2024-06-28 01:41:48,251 INFO L125 PetriNetUnfolderBase]: For 16245/16245 co-relation queries the response was YES. [2024-06-28 01:41:48,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1427 events. 793/1427 cut-off events. For 16245/16245 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7433 event pairs, 176 based on Foata normal form. 1/1381 useless extension candidates. Maximal degree in co-relation 8577. Up to 1128 conditions per place. [2024-06-28 01:41:48,261 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 138 selfloop transitions, 59 changer transitions 0/203 dead transitions. [2024-06-28 01:41:48,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 203 transitions, 2769 flow [2024-06-28 01:41:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:48,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:41:48,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-28 01:41:48,263 INFO L175 Difference]: Start difference. First operand has 127 places, 166 transitions, 2050 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:41:48,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 203 transitions, 2769 flow [2024-06-28 01:41:48,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 203 transitions, 2596 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:48,288 INFO L231 Difference]: Finished difference. Result has 129 places, 178 transitions, 2242 flow [2024-06-28 01:41:48,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2242, PETRI_PLACES=129, PETRI_TRANSITIONS=178} [2024-06-28 01:41:48,288 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 90 predicate places. [2024-06-28 01:41:48,288 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 178 transitions, 2242 flow [2024-06-28 01:41:48,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:48,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:48,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:41:48,289 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:48,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1024543489, now seen corresponding path program 2 times [2024-06-28 01:41:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:48,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257804879] [2024-06-28 01:41:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257804879] [2024-06-28 01:41:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257804879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78302868] [2024-06-28 01:41:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:48,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:48,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:48,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:48,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 178 transitions, 2242 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:48,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:48,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:48,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:49,119 INFO L124 PetriNetUnfolderBase]: 825/1476 cut-off events. [2024-06-28 01:41:49,120 INFO L125 PetriNetUnfolderBase]: For 17527/17527 co-relation queries the response was YES. [2024-06-28 01:41:49,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8958 conditions, 1476 events. 825/1476 cut-off events. For 17527/17527 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7746 event pairs, 178 based on Foata normal form. 2/1431 useless extension candidates. Maximal degree in co-relation 8896. Up to 1153 conditions per place. [2024-06-28 01:41:49,130 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 148 selfloop transitions, 60 changer transitions 0/214 dead transitions. [2024-06-28 01:41:49,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 214 transitions, 2884 flow [2024-06-28 01:41:49,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:41:49,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 01:41:49,137 INFO L175 Difference]: Start difference. First operand has 129 places, 178 transitions, 2242 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:41:49,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 214 transitions, 2884 flow [2024-06-28 01:41:49,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 214 transitions, 2799 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:41:49,167 INFO L231 Difference]: Finished difference. Result has 134 places, 184 transitions, 2361 flow [2024-06-28 01:41:49,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2361, PETRI_PLACES=134, PETRI_TRANSITIONS=184} [2024-06-28 01:41:49,168 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 95 predicate places. [2024-06-28 01:41:49,168 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 184 transitions, 2361 flow [2024-06-28 01:41:49,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:49,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:49,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:49,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:41:49,169 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:49,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash -309990609, now seen corresponding path program 1 times [2024-06-28 01:41:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:49,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137519071] [2024-06-28 01:41:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:49,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:49,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:49,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:49,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137519071] [2024-06-28 01:41:49,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137519071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:49,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:49,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:49,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037873414] [2024-06-28 01:41:49,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:49,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:49,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:49,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:49,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:49,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 184 transitions, 2361 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:49,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:49,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:49,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:50,123 INFO L124 PetriNetUnfolderBase]: 838/1503 cut-off events. [2024-06-28 01:41:50,124 INFO L125 PetriNetUnfolderBase]: For 18736/18736 co-relation queries the response was YES. [2024-06-28 01:41:50,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9204 conditions, 1503 events. 838/1503 cut-off events. For 18736/18736 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7947 event pairs, 235 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 9141. Up to 1273 conditions per place. [2024-06-28 01:41:50,135 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 180 selfloop transitions, 31 changer transitions 0/217 dead transitions. [2024-06-28 01:41:50,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 217 transitions, 3010 flow [2024-06-28 01:41:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:41:50,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:41:50,136 INFO L175 Difference]: Start difference. First operand has 134 places, 184 transitions, 2361 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:41:50,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 217 transitions, 3010 flow [2024-06-28 01:41:50,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 217 transitions, 2872 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:50,169 INFO L231 Difference]: Finished difference. Result has 137 places, 187 transitions, 2345 flow [2024-06-28 01:41:50,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2223, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2345, PETRI_PLACES=137, PETRI_TRANSITIONS=187} [2024-06-28 01:41:50,169 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 98 predicate places. [2024-06-28 01:41:50,169 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 187 transitions, 2345 flow [2024-06-28 01:41:50,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:50,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:50,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:50,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:41:50,170 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:50,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:50,171 INFO L85 PathProgramCache]: Analyzing trace with hash -309990857, now seen corresponding path program 3 times [2024-06-28 01:41:50,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:50,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039218427] [2024-06-28 01:41:50,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:50,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:50,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039218427] [2024-06-28 01:41:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039218427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9237821] [2024-06-28 01:41:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:50,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:50,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 187 transitions, 2345 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:50,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:50,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:50,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:51,006 INFO L124 PetriNetUnfolderBase]: 930/1634 cut-off events. [2024-06-28 01:41:51,006 INFO L125 PetriNetUnfolderBase]: For 21669/21669 co-relation queries the response was YES. [2024-06-28 01:41:51,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 1634 events. 930/1634 cut-off events. For 21669/21669 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 8660 event pairs, 147 based on Foata normal form. 4/1590 useless extension candidates. Maximal degree in co-relation 10113. Up to 1042 conditions per place. [2024-06-28 01:41:51,019 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 142 selfloop transitions, 85 changer transitions 0/233 dead transitions. [2024-06-28 01:41:51,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 233 transitions, 3234 flow [2024-06-28 01:41:51,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:41:51,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984126984126984 [2024-06-28 01:41:51,021 INFO L175 Difference]: Start difference. First operand has 137 places, 187 transitions, 2345 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:41:51,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 233 transitions, 3234 flow [2024-06-28 01:41:51,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 233 transitions, 3107 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:41:51,063 INFO L231 Difference]: Finished difference. Result has 140 places, 198 transitions, 2613 flow [2024-06-28 01:41:51,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2245, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2613, PETRI_PLACES=140, PETRI_TRANSITIONS=198} [2024-06-28 01:41:51,063 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 101 predicate places. [2024-06-28 01:41:51,063 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 198 transitions, 2613 flow [2024-06-28 01:41:51,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:51,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:41:51,064 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:51,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,065 INFO L85 PathProgramCache]: Analyzing trace with hash -309997367, now seen corresponding path program 4 times [2024-06-28 01:41:51,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074130236] [2024-06-28 01:41:51,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:51,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:51,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074130236] [2024-06-28 01:41:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074130236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:51,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978899760] [2024-06-28 01:41:51,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:51,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:51,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:51,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 198 transitions, 2613 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:51,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:51,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:51,864 INFO L124 PetriNetUnfolderBase]: 940/1649 cut-off events. [2024-06-28 01:41:51,864 INFO L125 PetriNetUnfolderBase]: For 24032/24032 co-relation queries the response was YES. [2024-06-28 01:41:51,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10772 conditions, 1649 events. 940/1649 cut-off events. For 24032/24032 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8727 event pairs, 169 based on Foata normal form. 2/1603 useless extension candidates. Maximal degree in co-relation 10706. Up to 1049 conditions per place. [2024-06-28 01:41:51,905 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 148 selfloop transitions, 82 changer transitions 0/236 dead transitions. [2024-06-28 01:41:51,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 236 transitions, 3401 flow [2024-06-28 01:41:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:51,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:41:51,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015873015873016 [2024-06-28 01:41:51,907 INFO L175 Difference]: Start difference. First operand has 140 places, 198 transitions, 2613 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:41:51,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 236 transitions, 3401 flow [2024-06-28 01:41:51,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 236 transitions, 3242 flow, removed 36 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:51,951 INFO L231 Difference]: Finished difference. Result has 144 places, 201 transitions, 2690 flow [2024-06-28 01:41:51,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2460, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2690, PETRI_PLACES=144, PETRI_TRANSITIONS=201} [2024-06-28 01:41:51,952 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-06-28 01:41:51,952 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 201 transitions, 2690 flow [2024-06-28 01:41:51,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:51,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:51,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:51,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:41:51,953 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:51,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:51,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1590436039, now seen corresponding path program 3 times [2024-06-28 01:41:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817911362] [2024-06-28 01:41:51,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:52,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:52,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817911362] [2024-06-28 01:41:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817911362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:52,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:52,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:52,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951121719] [2024-06-28 01:41:52,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:52,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:52,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:52,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:52,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:52,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 201 transitions, 2690 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:52,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:52,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:52,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:52,973 INFO L124 PetriNetUnfolderBase]: 938/1660 cut-off events. [2024-06-28 01:41:52,973 INFO L125 PetriNetUnfolderBase]: For 23569/23569 co-relation queries the response was YES. [2024-06-28 01:41:52,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10824 conditions, 1660 events. 938/1660 cut-off events. For 23569/23569 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8892 event pairs, 199 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 10756. Up to 1286 conditions per place. [2024-06-28 01:41:52,986 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 153 selfloop transitions, 68 changer transitions 0/227 dead transitions. [2024-06-28 01:41:52,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 227 transitions, 3337 flow [2024-06-28 01:41:52,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:41:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:41:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-28 01:41:52,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:41:52,988 INFO L175 Difference]: Start difference. First operand has 144 places, 201 transitions, 2690 flow. Second operand 7 states and 119 transitions. [2024-06-28 01:41:52,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 227 transitions, 3337 flow [2024-06-28 01:41:53,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 227 transitions, 3149 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:53,033 INFO L231 Difference]: Finished difference. Result has 145 places, 205 transitions, 2775 flow [2024-06-28 01:41:53,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2775, PETRI_PLACES=145, PETRI_TRANSITIONS=205} [2024-06-28 01:41:53,034 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 106 predicate places. [2024-06-28 01:41:53,034 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 205 transitions, 2775 flow [2024-06-28 01:41:53,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:53,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:53,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:53,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:41:53,035 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:53,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:53,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1649494063, now seen corresponding path program 5 times [2024-06-28 01:41:53,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:53,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10399283] [2024-06-28 01:41:53,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:53,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:53,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:53,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10399283] [2024-06-28 01:41:53,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10399283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:53,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:53,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:53,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491548138] [2024-06-28 01:41:53,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:53,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:53,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:53,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:53,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:53,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 205 transitions, 2775 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:53,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:53,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:53,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:53,876 INFO L124 PetriNetUnfolderBase]: 958/1680 cut-off events. [2024-06-28 01:41:53,876 INFO L125 PetriNetUnfolderBase]: For 24886/24886 co-relation queries the response was YES. [2024-06-28 01:41:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11047 conditions, 1680 events. 958/1680 cut-off events. For 24886/24886 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8936 event pairs, 155 based on Foata normal form. 2/1634 useless extension candidates. Maximal degree in co-relation 10978. Up to 1272 conditions per place. [2024-06-28 01:41:53,889 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 156 selfloop transitions, 73 changer transitions 0/235 dead transitions. [2024-06-28 01:41:53,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 235 transitions, 3445 flow [2024-06-28 01:41:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:41:53,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:41:53,890 INFO L175 Difference]: Start difference. First operand has 145 places, 205 transitions, 2775 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:41:53,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 235 transitions, 3445 flow [2024-06-28 01:41:53,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 235 transitions, 3321 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:53,938 INFO L231 Difference]: Finished difference. Result has 148 places, 208 transitions, 2885 flow [2024-06-28 01:41:53,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2885, PETRI_PLACES=148, PETRI_TRANSITIONS=208} [2024-06-28 01:41:53,939 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 109 predicate places. [2024-06-28 01:41:53,939 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 208 transitions, 2885 flow [2024-06-28 01:41:53,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:53,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:53,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:53,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:41:53,939 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:53,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:53,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1653241963, now seen corresponding path program 6 times [2024-06-28 01:41:53,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:53,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004787496] [2024-06-28 01:41:53,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:53,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004787496] [2024-06-28 01:41:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004787496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:54,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:54,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715946533] [2024-06-28 01:41:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:54,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:54,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 208 transitions, 2885 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:54,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:54,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:54,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:54,966 INFO L124 PetriNetUnfolderBase]: 1260/2136 cut-off events. [2024-06-28 01:41:54,966 INFO L125 PetriNetUnfolderBase]: For 36028/36028 co-relation queries the response was YES. [2024-06-28 01:41:54,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15029 conditions, 2136 events. 1260/2136 cut-off events. For 36028/36028 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11672 event pairs, 208 based on Foata normal form. 2/2085 useless extension candidates. Maximal degree in co-relation 14959. Up to 1448 conditions per place. [2024-06-28 01:41:54,980 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 198 selfloop transitions, 112 changer transitions 0/316 dead transitions. [2024-06-28 01:41:54,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 316 transitions, 5107 flow [2024-06-28 01:41:54,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:41:54,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:41:54,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:41:54,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:41:54,982 INFO L175 Difference]: Start difference. First operand has 148 places, 208 transitions, 2885 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:41:54,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 316 transitions, 5107 flow [2024-06-28 01:41:55,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 316 transitions, 4877 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:55,046 INFO L231 Difference]: Finished difference. Result has 153 places, 269 transitions, 4099 flow [2024-06-28 01:41:55,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4099, PETRI_PLACES=153, PETRI_TRANSITIONS=269} [2024-06-28 01:41:55,047 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 114 predicate places. [2024-06-28 01:41:55,047 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 269 transitions, 4099 flow [2024-06-28 01:41:55,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:55,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:55,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:55,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:41:55,047 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:55,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:55,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1653248721, now seen corresponding path program 2 times [2024-06-28 01:41:55,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:55,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401338645] [2024-06-28 01:41:55,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:55,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:55,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:55,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401338645] [2024-06-28 01:41:55,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401338645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:55,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:55,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:55,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547666488] [2024-06-28 01:41:55,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:55,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:55,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:55,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:55,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:55,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:55,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 269 transitions, 4099 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:55,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:55,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:55,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:56,185 INFO L124 PetriNetUnfolderBase]: 1263/2146 cut-off events. [2024-06-28 01:41:56,185 INFO L125 PetriNetUnfolderBase]: For 40451/40451 co-relation queries the response was YES. [2024-06-28 01:41:56,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15781 conditions, 2146 events. 1263/2146 cut-off events. For 40451/40451 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11736 event pairs, 292 based on Foata normal form. 1/2099 useless extension candidates. Maximal degree in co-relation 15708. Up to 1868 conditions per place. [2024-06-28 01:41:56,201 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 251 selfloop transitions, 48 changer transitions 0/305 dead transitions. [2024-06-28 01:41:56,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 305 transitions, 5085 flow [2024-06-28 01:41:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:41:56,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:41:56,203 INFO L175 Difference]: Start difference. First operand has 153 places, 269 transitions, 4099 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:41:56,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 305 transitions, 5085 flow [2024-06-28 01:41:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 305 transitions, 5021 flow, removed 31 selfloop flow, removed 1 redundant places. [2024-06-28 01:41:56,284 INFO L231 Difference]: Finished difference. Result has 160 places, 274 transitions, 4268 flow [2024-06-28 01:41:56,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4037, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4268, PETRI_PLACES=160, PETRI_TRANSITIONS=274} [2024-06-28 01:41:56,285 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 121 predicate places. [2024-06-28 01:41:56,285 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 274 transitions, 4268 flow [2024-06-28 01:41:56,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:56,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:56,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:56,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:41:56,286 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:56,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1653248473, now seen corresponding path program 7 times [2024-06-28 01:41:56,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:56,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423283896] [2024-06-28 01:41:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:56,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:56,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:56,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423283896] [2024-06-28 01:41:56,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423283896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:56,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:56,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:56,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663785290] [2024-06-28 01:41:56,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:56,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:56,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:56,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:56,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 274 transitions, 4268 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:56,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:56,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:56,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:57,197 INFO L124 PetriNetUnfolderBase]: 1255/2127 cut-off events. [2024-06-28 01:41:57,197 INFO L125 PetriNetUnfolderBase]: For 39466/39466 co-relation queries the response was YES. [2024-06-28 01:41:57,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 2127 events. 1255/2127 cut-off events. For 39466/39466 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11647 event pairs, 142 based on Foata normal form. 4/2082 useless extension candidates. Maximal degree in co-relation 15663. Up to 1120 conditions per place. [2024-06-28 01:41:57,215 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 141 selfloop transitions, 158 changer transitions 0/305 dead transitions. [2024-06-28 01:41:57,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 305 transitions, 5128 flow [2024-06-28 01:41:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:41:57,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2024-06-28 01:41:57,216 INFO L175 Difference]: Start difference. First operand has 160 places, 274 transitions, 4268 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:41:57,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 305 transitions, 5128 flow [2024-06-28 01:41:57,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 305 transitions, 4925 flow, removed 60 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:57,304 INFO L231 Difference]: Finished difference. Result has 162 places, 274 transitions, 4406 flow [2024-06-28 01:41:57,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4406, PETRI_PLACES=162, PETRI_TRANSITIONS=274} [2024-06-28 01:41:57,304 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 123 predicate places. [2024-06-28 01:41:57,305 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 274 transitions, 4406 flow [2024-06-28 01:41:57,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:57,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:57,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:41:57,305 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:57,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:57,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1467788369, now seen corresponding path program 3 times [2024-06-28 01:41:57,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:57,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898555897] [2024-06-28 01:41:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:57,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:41:57,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898555897] [2024-06-28 01:41:57,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898555897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:57,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:57,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:57,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552609267] [2024-06-28 01:41:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:57,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:57,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:57,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 274 transitions, 4406 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:57,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:57,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:57,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:58,657 INFO L124 PetriNetUnfolderBase]: 1268/2158 cut-off events. [2024-06-28 01:41:58,657 INFO L125 PetriNetUnfolderBase]: For 43684/43684 co-relation queries the response was YES. [2024-06-28 01:41:58,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16255 conditions, 2158 events. 1268/2158 cut-off events. For 43684/43684 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11838 event pairs, 369 based on Foata normal form. 1/2110 useless extension candidates. Maximal degree in co-relation 16178. Up to 1935 conditions per place. [2024-06-28 01:41:58,682 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 282 selfloop transitions, 17 changer transitions 0/305 dead transitions. [2024-06-28 01:41:58,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 305 transitions, 5289 flow [2024-06-28 01:41:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:58,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-28 01:41:58,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-06-28 01:41:58,683 INFO L175 Difference]: Start difference. First operand has 162 places, 274 transitions, 4406 flow. Second operand 8 states and 129 transitions. [2024-06-28 01:41:58,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 305 transitions, 5289 flow [2024-06-28 01:41:58,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 305 transitions, 5040 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:41:58,803 INFO L231 Difference]: Finished difference. Result has 165 places, 277 transitions, 4275 flow [2024-06-28 01:41:58,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4157, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4275, PETRI_PLACES=165, PETRI_TRANSITIONS=277} [2024-06-28 01:41:58,803 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 126 predicate places. [2024-06-28 01:41:58,804 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 277 transitions, 4275 flow [2024-06-28 01:41:58,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:58,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:58,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:41:58,805 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:58,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:58,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1541524721, now seen corresponding path program 8 times [2024-06-28 01:41:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:58,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205535452] [2024-06-28 01:41:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:41:58,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:41:59,305 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 01:41:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:41:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205535452] [2024-06-28 01:41:59,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205535452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:41:59,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:41:59,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:41:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052489820] [2024-06-28 01:41:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:41:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:41:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:41:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:41:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:41:59,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:41:59,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 277 transitions, 4275 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:59,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:41:59,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:41:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:41:59,880 INFO L124 PetriNetUnfolderBase]: 1348/2276 cut-off events. [2024-06-28 01:41:59,880 INFO L125 PetriNetUnfolderBase]: For 47721/47721 co-relation queries the response was YES. [2024-06-28 01:41:59,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17118 conditions, 2276 events. 1348/2276 cut-off events. For 47721/47721 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12562 event pairs, 377 based on Foata normal form. 4/2232 useless extension candidates. Maximal degree in co-relation 17040. Up to 1973 conditions per place. [2024-06-28 01:41:59,898 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 284 selfloop transitions, 32 changer transitions 0/322 dead transitions. [2024-06-28 01:41:59,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 322 transitions, 5502 flow [2024-06-28 01:41:59,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:41:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:41:59,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:41:59,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 01:41:59,899 INFO L175 Difference]: Start difference. First operand has 165 places, 277 transitions, 4275 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:41:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 322 transitions, 5502 flow [2024-06-28 01:41:59,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 322 transitions, 5359 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:41:59,995 INFO L231 Difference]: Finished difference. Result has 169 places, 294 transitions, 4580 flow [2024-06-28 01:41:59,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4179, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4580, PETRI_PLACES=169, PETRI_TRANSITIONS=294} [2024-06-28 01:41:59,995 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 130 predicate places. [2024-06-28 01:41:59,996 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 294 transitions, 4580 flow [2024-06-28 01:41:59,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:41:59,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:41:59,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:41:59,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:41:59,996 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:41:59,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:41:59,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1541227803, now seen corresponding path program 4 times [2024-06-28 01:41:59,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:41:59,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572007402] [2024-06-28 01:41:59,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:41:59,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:00,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:00,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:00,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572007402] [2024-06-28 01:42:00,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572007402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:00,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:00,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:00,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537337600] [2024-06-28 01:42:00,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:00,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:00,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:00,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:00,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:00,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:00,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 294 transitions, 4580 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:00,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:00,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:00,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:01,169 INFO L124 PetriNetUnfolderBase]: 1349/2286 cut-off events. [2024-06-28 01:42:01,170 INFO L125 PetriNetUnfolderBase]: For 49003/49003 co-relation queries the response was YES. [2024-06-28 01:42:01,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17421 conditions, 2286 events. 1349/2286 cut-off events. For 49003/49003 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12663 event pairs, 381 based on Foata normal form. 1/2236 useless extension candidates. Maximal degree in co-relation 17340. Up to 2033 conditions per place. [2024-06-28 01:42:01,189 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 295 selfloop transitions, 31 changer transitions 0/332 dead transitions. [2024-06-28 01:42:01,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 332 transitions, 5625 flow [2024-06-28 01:42:01,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:01,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:01,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:42:01,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-28 01:42:01,190 INFO L175 Difference]: Start difference. First operand has 169 places, 294 transitions, 4580 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:42:01,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 332 transitions, 5625 flow [2024-06-28 01:42:01,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 332 transitions, 5302 flow, removed 116 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:01,298 INFO L231 Difference]: Finished difference. Result has 175 places, 299 transitions, 4515 flow [2024-06-28 01:42:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4318, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4515, PETRI_PLACES=175, PETRI_TRANSITIONS=299} [2024-06-28 01:42:01,299 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 136 predicate places. [2024-06-28 01:42:01,299 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 299 transitions, 4515 flow [2024-06-28 01:42:01,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:01,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:01,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:01,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:42:01,299 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:01,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:01,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1476062827, now seen corresponding path program 9 times [2024-06-28 01:42:01,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:01,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771280587] [2024-06-28 01:42:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:01,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:01,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771280587] [2024-06-28 01:42:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771280587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286229553] [2024-06-28 01:42:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:01,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:01,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:01,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:01,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:01,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 299 transitions, 4515 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:01,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:01,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:01,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:02,177 INFO L124 PetriNetUnfolderBase]: 1391/2324 cut-off events. [2024-06-28 01:42:02,177 INFO L125 PetriNetUnfolderBase]: For 48729/48729 co-relation queries the response was YES. [2024-06-28 01:42:02,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17653 conditions, 2324 events. 1391/2324 cut-off events. For 48729/48729 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12753 event pairs, 212 based on Foata normal form. 4/2278 useless extension candidates. Maximal degree in co-relation 17570. Up to 1045 conditions per place. [2024-06-28 01:42:02,197 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 179 selfloop transitions, 161 changer transitions 0/346 dead transitions. [2024-06-28 01:42:02,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 346 transitions, 5902 flow [2024-06-28 01:42:02,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:02,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:42:02,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-06-28 01:42:02,199 INFO L175 Difference]: Start difference. First operand has 175 places, 299 transitions, 4515 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:42:02,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 346 transitions, 5902 flow [2024-06-28 01:42:02,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 346 transitions, 5751 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:02,351 INFO L231 Difference]: Finished difference. Result has 177 places, 308 transitions, 4941 flow [2024-06-28 01:42:02,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4368, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4941, PETRI_PLACES=177, PETRI_TRANSITIONS=308} [2024-06-28 01:42:02,352 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-28 01:42:02,352 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 308 transitions, 4941 flow [2024-06-28 01:42:02,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:02,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:02,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:42:02,353 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:02,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:02,353 INFO L85 PathProgramCache]: Analyzing trace with hash 995649721, now seen corresponding path program 5 times [2024-06-28 01:42:02,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:02,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748362481] [2024-06-28 01:42:02,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:02,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748362481] [2024-06-28 01:42:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748362481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:02,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:02,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:02,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170903588] [2024-06-28 01:42:02,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:02,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:02,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:02,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:02,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 308 transitions, 4941 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:02,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:02,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:02,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:03,430 INFO L124 PetriNetUnfolderBase]: 1392/2341 cut-off events. [2024-06-28 01:42:03,430 INFO L125 PetriNetUnfolderBase]: For 53070/53070 co-relation queries the response was YES. [2024-06-28 01:42:03,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18365 conditions, 2341 events. 1392/2341 cut-off events. For 53070/53070 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 12983 event pairs, 282 based on Foata normal form. 1/2293 useless extension candidates. Maximal degree in co-relation 18280. Up to 2018 conditions per place. [2024-06-28 01:42:03,448 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 294 selfloop transitions, 49 changer transitions 0/349 dead transitions. [2024-06-28 01:42:03,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 349 transitions, 6179 flow [2024-06-28 01:42:03,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:03,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:42:03,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45396825396825397 [2024-06-28 01:42:03,450 INFO L175 Difference]: Start difference. First operand has 177 places, 308 transitions, 4941 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:42:03,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 349 transitions, 6179 flow [2024-06-28 01:42:03,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 349 transitions, 5819 flow, removed 85 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:03,576 INFO L231 Difference]: Finished difference. Result has 182 places, 313 transitions, 4873 flow [2024-06-28 01:42:03,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4629, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4873, PETRI_PLACES=182, PETRI_TRANSITIONS=313} [2024-06-28 01:42:03,576 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 143 predicate places. [2024-06-28 01:42:03,576 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 313 transitions, 4873 flow [2024-06-28 01:42:03,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:03,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:03,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:03,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:42:03,577 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:03,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:03,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1476069337, now seen corresponding path program 10 times [2024-06-28 01:42:03,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:03,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756465547] [2024-06-28 01:42:03,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:03,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:03,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:03,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756465547] [2024-06-28 01:42:03,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756465547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:03,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:03,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:03,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454697998] [2024-06-28 01:42:03,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:03,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:03,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:03,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:03,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:04,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:04,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 313 transitions, 4873 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:04,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:04,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:04,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:04,502 INFO L124 PetriNetUnfolderBase]: 1388/2318 cut-off events. [2024-06-28 01:42:04,502 INFO L125 PetriNetUnfolderBase]: For 46861/46861 co-relation queries the response was YES. [2024-06-28 01:42:04,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17855 conditions, 2318 events. 1388/2318 cut-off events. For 46861/46861 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 12684 event pairs, 207 based on Foata normal form. 2/2271 useless extension candidates. Maximal degree in co-relation 17768. Up to 1047 conditions per place. [2024-06-28 01:42:04,522 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 174 selfloop transitions, 172 changer transitions 0/352 dead transitions. [2024-06-28 01:42:04,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 352 transitions, 6057 flow [2024-06-28 01:42:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:04,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:42:04,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-28 01:42:04,523 INFO L175 Difference]: Start difference. First operand has 182 places, 313 transitions, 4873 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:42:04,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 352 transitions, 6057 flow [2024-06-28 01:42:04,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 352 transitions, 5852 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:04,649 INFO L231 Difference]: Finished difference. Result has 183 places, 316 transitions, 5107 flow [2024-06-28 01:42:04,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4677, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5107, PETRI_PLACES=183, PETRI_TRANSITIONS=316} [2024-06-28 01:42:04,649 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 144 predicate places. [2024-06-28 01:42:04,650 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 316 transitions, 5107 flow [2024-06-28 01:42:04,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:04,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:04,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:04,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:42:04,650 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:04,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1589729291, now seen corresponding path program 1 times [2024-06-28 01:42:04,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:04,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692443088] [2024-06-28 01:42:04,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:04,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:05,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:05,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:05,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692443088] [2024-06-28 01:42:05,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692443088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:05,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:05,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:05,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797374770] [2024-06-28 01:42:05,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:05,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:05,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:05,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:05,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:05,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 316 transitions, 5107 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:05,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:05,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:05,714 INFO L124 PetriNetUnfolderBase]: 1418/2392 cut-off events. [2024-06-28 01:42:05,714 INFO L125 PetriNetUnfolderBase]: For 51454/51454 co-relation queries the response was YES. [2024-06-28 01:42:05,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18641 conditions, 2392 events. 1418/2392 cut-off events. For 51454/51454 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13325 event pairs, 323 based on Foata normal form. 2/2344 useless extension candidates. Maximal degree in co-relation 18553. Up to 2055 conditions per place. [2024-06-28 01:42:05,734 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 272 selfloop transitions, 81 changer transitions 0/359 dead transitions. [2024-06-28 01:42:05,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 359 transitions, 6187 flow [2024-06-28 01:42:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:05,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:42:05,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-28 01:42:05,735 INFO L175 Difference]: Start difference. First operand has 183 places, 316 transitions, 5107 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:42:05,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 359 transitions, 6187 flow [2024-06-28 01:42:05,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 359 transitions, 5797 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:05,871 INFO L231 Difference]: Finished difference. Result has 188 places, 331 transitions, 5163 flow [2024-06-28 01:42:05,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4731, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5163, PETRI_PLACES=188, PETRI_TRANSITIONS=331} [2024-06-28 01:42:05,872 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 149 predicate places. [2024-06-28 01:42:05,872 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 331 transitions, 5163 flow [2024-06-28 01:42:05,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:05,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:05,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:42:05,872 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:05,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:05,873 INFO L85 PathProgramCache]: Analyzing trace with hash 70817631, now seen corresponding path program 2 times [2024-06-28 01:42:05,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:05,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037854770] [2024-06-28 01:42:05,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:05,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:06,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:06,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:06,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037854770] [2024-06-28 01:42:06,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037854770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:06,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:06,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:06,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234102954] [2024-06-28 01:42:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:06,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:06,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:06,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:06,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:06,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:06,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 331 transitions, 5163 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:06,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:06,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:06,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:07,114 INFO L124 PetriNetUnfolderBase]: 1464/2471 cut-off events. [2024-06-28 01:42:07,115 INFO L125 PetriNetUnfolderBase]: For 52920/52920 co-relation queries the response was YES. [2024-06-28 01:42:07,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 2471 events. 1464/2471 cut-off events. For 52920/52920 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 13855 event pairs, 261 based on Foata normal form. 2/2424 useless extension candidates. Maximal degree in co-relation 18640. Up to 2063 conditions per place. [2024-06-28 01:42:07,143 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 289 selfloop transitions, 78 changer transitions 0/373 dead transitions. [2024-06-28 01:42:07,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 373 transitions, 6238 flow [2024-06-28 01:42:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:42:07,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46984126984126984 [2024-06-28 01:42:07,145 INFO L175 Difference]: Start difference. First operand has 188 places, 331 transitions, 5163 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:42:07,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 373 transitions, 6238 flow [2024-06-28 01:42:07,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 373 transitions, 6043 flow, removed 89 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:07,265 INFO L231 Difference]: Finished difference. Result has 196 places, 343 transitions, 5390 flow [2024-06-28 01:42:07,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5390, PETRI_PLACES=196, PETRI_TRANSITIONS=343} [2024-06-28 01:42:07,266 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2024-06-28 01:42:07,266 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 343 transitions, 5390 flow [2024-06-28 01:42:07,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:07,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:07,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:07,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:42:07,267 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:07,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1309009798, now seen corresponding path program 1 times [2024-06-28 01:42:07,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:07,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044358067] [2024-06-28 01:42:07,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:07,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:07,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:07,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044358067] [2024-06-28 01:42:07,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044358067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:07,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:07,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:07,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889387713] [2024-06-28 01:42:07,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:07,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:07,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:07,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:07,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:07,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 343 transitions, 5390 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:07,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:07,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:07,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:08,634 INFO L124 PetriNetUnfolderBase]: 1484/2506 cut-off events. [2024-06-28 01:42:08,634 INFO L125 PetriNetUnfolderBase]: For 53682/53682 co-relation queries the response was YES. [2024-06-28 01:42:08,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19200 conditions, 2506 events. 1484/2506 cut-off events. For 53682/53682 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14166 event pairs, 281 based on Foata normal form. 1/2457 useless extension candidates. Maximal degree in co-relation 19107. Up to 2089 conditions per place. [2024-06-28 01:42:08,669 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 270 selfloop transitions, 106 changer transitions 0/382 dead transitions. [2024-06-28 01:42:08,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 382 transitions, 6555 flow [2024-06-28 01:42:08,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:42:08,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:42:08,672 INFO L175 Difference]: Start difference. First operand has 196 places, 343 transitions, 5390 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:42:08,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 382 transitions, 6555 flow [2024-06-28 01:42:08,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 382 transitions, 6397 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:08,884 INFO L231 Difference]: Finished difference. Result has 201 places, 353 transitions, 5766 flow [2024-06-28 01:42:08,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5766, PETRI_PLACES=201, PETRI_TRANSITIONS=353} [2024-06-28 01:42:08,885 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 162 predicate places. [2024-06-28 01:42:08,885 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 353 transitions, 5766 flow [2024-06-28 01:42:08,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:08,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:08,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:08,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:42:08,893 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:08,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1308993213, now seen corresponding path program 3 times [2024-06-28 01:42:08,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:08,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743074868] [2024-06-28 01:42:08,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:08,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743074868] [2024-06-28 01:42:09,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743074868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:09,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:09,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303341291] [2024-06-28 01:42:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:09,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:09,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 353 transitions, 5766 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:10,189 INFO L124 PetriNetUnfolderBase]: 1499/2530 cut-off events. [2024-06-28 01:42:10,190 INFO L125 PetriNetUnfolderBase]: For 57352/57352 co-relation queries the response was YES. [2024-06-28 01:42:10,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19752 conditions, 2530 events. 1499/2530 cut-off events. For 57352/57352 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14288 event pairs, 295 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 19657. Up to 2137 conditions per place. [2024-06-28 01:42:10,224 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 287 selfloop transitions, 92 changer transitions 0/385 dead transitions. [2024-06-28 01:42:10,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 385 transitions, 6740 flow [2024-06-28 01:42:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:10,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:10,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:42:10,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4793650793650794 [2024-06-28 01:42:10,226 INFO L175 Difference]: Start difference. First operand has 201 places, 353 transitions, 5766 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:42:10,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 385 transitions, 6740 flow [2024-06-28 01:42:10,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 385 transitions, 6525 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:10,448 INFO L231 Difference]: Finished difference. Result has 205 places, 355 transitions, 5813 flow [2024-06-28 01:42:10,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5551, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5813, PETRI_PLACES=205, PETRI_TRANSITIONS=355} [2024-06-28 01:42:10,449 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 166 predicate places. [2024-06-28 01:42:10,449 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 355 transitions, 5813 flow [2024-06-28 01:42:10,450 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 01:42:10,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:10,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:10,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:42:10,450 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:10,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:10,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2072207843, now seen corresponding path program 1 times [2024-06-28 01:42:10,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:10,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157728571] [2024-06-28 01:42:10,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:10,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:10,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:10,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:10,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157728571] [2024-06-28 01:42:10,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157728571] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:10,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:10,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:10,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426919826] [2024-06-28 01:42:10,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:10,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:10,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:10,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:10,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:10,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:10,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 355 transitions, 5813 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 01:42:10,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:10,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:10,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:11,606 INFO L124 PetriNetUnfolderBase]: 1496/2519 cut-off events. [2024-06-28 01:42:11,607 INFO L125 PetriNetUnfolderBase]: For 57249/57249 co-relation queries the response was YES. [2024-06-28 01:42:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19607 conditions, 2519 events. 1496/2519 cut-off events. For 57249/57249 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14212 event pairs, 230 based on Foata normal form. 2/2471 useless extension candidates. Maximal degree in co-relation 19511. Up to 1744 conditions per place. [2024-06-28 01:42:11,630 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 232 selfloop transitions, 160 changer transitions 0/398 dead transitions. [2024-06-28 01:42:11,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 398 transitions, 7103 flow [2024-06-28 01:42:11,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:11,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:11,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:42:11,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-28 01:42:11,631 INFO L175 Difference]: Start difference. First operand has 205 places, 355 transitions, 5813 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:42:11,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 398 transitions, 7103 flow [2024-06-28 01:42:11,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 398 transitions, 6908 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:11,791 INFO L231 Difference]: Finished difference. Result has 209 places, 367 transitions, 6285 flow [2024-06-28 01:42:11,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5618, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6285, PETRI_PLACES=209, PETRI_TRANSITIONS=367} [2024-06-28 01:42:11,791 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 170 predicate places. [2024-06-28 01:42:11,792 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 367 transitions, 6285 flow [2024-06-28 01:42:11,792 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 01:42:11,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:11,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:11,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:42:11,792 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:11,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:11,793 INFO L85 PathProgramCache]: Analyzing trace with hash -363086853, now seen corresponding path program 4 times [2024-06-28 01:42:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867925049] [2024-06-28 01:42:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:11,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:12,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:12,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867925049] [2024-06-28 01:42:12,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867925049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:12,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:12,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396479171] [2024-06-28 01:42:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:12,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:12,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:12,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:12,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 367 transitions, 6285 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:12,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:12,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:12,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:13,127 INFO L124 PetriNetUnfolderBase]: 1561/2626 cut-off events. [2024-06-28 01:42:13,127 INFO L125 PetriNetUnfolderBase]: For 63616/63616 co-relation queries the response was YES. [2024-06-28 01:42:13,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20748 conditions, 2626 events. 1561/2626 cut-off events. For 63616/63616 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 14917 event pairs, 329 based on Foata normal form. 2/2580 useless extension candidates. Maximal degree in co-relation 20650. Up to 2254 conditions per place. [2024-06-28 01:42:13,150 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 325 selfloop transitions, 82 changer transitions 0/413 dead transitions. [2024-06-28 01:42:13,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 413 transitions, 7458 flow [2024-06-28 01:42:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:13,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:13,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:42:13,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 01:42:13,152 INFO L175 Difference]: Start difference. First operand has 209 places, 367 transitions, 6285 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:42:13,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 413 transitions, 7458 flow [2024-06-28 01:42:13,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 413 transitions, 7105 flow, removed 50 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:13,308 INFO L231 Difference]: Finished difference. Result has 213 places, 383 transitions, 6371 flow [2024-06-28 01:42:13,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6371, PETRI_PLACES=213, PETRI_TRANSITIONS=383} [2024-06-28 01:42:13,309 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 174 predicate places. [2024-06-28 01:42:13,309 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 383 transitions, 6371 flow [2024-06-28 01:42:13,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:13,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:13,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:13,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:42:13,310 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:13,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:13,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1693246789, now seen corresponding path program 5 times [2024-06-28 01:42:13,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:13,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107065067] [2024-06-28 01:42:13,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:13,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:13,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:13,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:13,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107065067] [2024-06-28 01:42:13,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107065067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:13,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:13,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:13,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172347930] [2024-06-28 01:42:13,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:13,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:13,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:13,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:13,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:13,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:13,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 383 transitions, 6371 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:13,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:13,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:13,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:14,640 INFO L124 PetriNetUnfolderBase]: 1589/2675 cut-off events. [2024-06-28 01:42:14,640 INFO L125 PetriNetUnfolderBase]: For 64394/64394 co-relation queries the response was YES. [2024-06-28 01:42:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20994 conditions, 2675 events. 1589/2675 cut-off events. For 64394/64394 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 15325 event pairs, 322 based on Foata normal form. 2/2628 useless extension candidates. Maximal degree in co-relation 20894. Up to 2272 conditions per place. [2024-06-28 01:42:14,666 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 316 selfloop transitions, 97 changer transitions 0/419 dead transitions. [2024-06-28 01:42:14,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 419 transitions, 7504 flow [2024-06-28 01:42:14,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:42:14,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 01:42:14,668 INFO L175 Difference]: Start difference. First operand has 213 places, 383 transitions, 6371 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:42:14,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 419 transitions, 7504 flow [2024-06-28 01:42:14,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 419 transitions, 7356 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:14,853 INFO L231 Difference]: Finished difference. Result has 219 places, 390 transitions, 6640 flow [2024-06-28 01:42:14,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6223, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6640, PETRI_PLACES=219, PETRI_TRANSITIONS=390} [2024-06-28 01:42:14,853 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 180 predicate places. [2024-06-28 01:42:14,853 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 390 transitions, 6640 flow [2024-06-28 01:42:14,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:14,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:14,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:14,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:42:14,854 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:14,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1693246944, now seen corresponding path program 2 times [2024-06-28 01:42:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170608305] [2024-06-28 01:42:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:15,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:15,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170608305] [2024-06-28 01:42:15,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170608305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:15,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584059099] [2024-06-28 01:42:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:15,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:15,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:15,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:15,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 390 transitions, 6640 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:15,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:15,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:15,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:16,062 INFO L124 PetriNetUnfolderBase]: 1600/2691 cut-off events. [2024-06-28 01:42:16,062 INFO L125 PetriNetUnfolderBase]: For 65642/65642 co-relation queries the response was YES. [2024-06-28 01:42:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21309 conditions, 2691 events. 1600/2691 cut-off events. For 65642/65642 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 15448 event pairs, 320 based on Foata normal form. 1/2643 useless extension candidates. Maximal degree in co-relation 21207. Up to 2257 conditions per place. [2024-06-28 01:42:16,087 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 312 selfloop transitions, 109 changer transitions 0/427 dead transitions. [2024-06-28 01:42:16,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 427 transitions, 7840 flow [2024-06-28 01:42:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:16,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:16,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:42:16,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-28 01:42:16,088 INFO L175 Difference]: Start difference. First operand has 219 places, 390 transitions, 6640 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:42:16,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 427 transitions, 7840 flow [2024-06-28 01:42:16,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 427 transitions, 7537 flow, removed 91 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:16,291 INFO L231 Difference]: Finished difference. Result has 223 places, 398 transitions, 6803 flow [2024-06-28 01:42:16,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6389, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6803, PETRI_PLACES=223, PETRI_TRANSITIONS=398} [2024-06-28 01:42:16,292 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 184 predicate places. [2024-06-28 01:42:16,292 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 398 transitions, 6803 flow [2024-06-28 01:42:16,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:16,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:16,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:16,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:42:16,292 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:16,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:16,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1812257029, now seen corresponding path program 6 times [2024-06-28 01:42:16,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:16,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825653693] [2024-06-28 01:42:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:16,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:16,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825653693] [2024-06-28 01:42:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825653693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:16,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:16,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:16,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236160312] [2024-06-28 01:42:16,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:16,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:16,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:16,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:16,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:16,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:16,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 398 transitions, 6803 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:16,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:16,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:16,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:17,470 INFO L124 PetriNetUnfolderBase]: 1615/2713 cut-off events. [2024-06-28 01:42:17,470 INFO L125 PetriNetUnfolderBase]: For 68793/68793 co-relation queries the response was YES. [2024-06-28 01:42:17,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21435 conditions, 2713 events. 1615/2713 cut-off events. For 68793/68793 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 15529 event pairs, 279 based on Foata normal form. 2/2666 useless extension candidates. Maximal degree in co-relation 21332. Up to 2249 conditions per place. [2024-06-28 01:42:17,495 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 302 selfloop transitions, 122 changer transitions 0/430 dead transitions. [2024-06-28 01:42:17,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 430 transitions, 7893 flow [2024-06-28 01:42:17,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:17,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:17,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:42:17,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 01:42:17,497 INFO L175 Difference]: Start difference. First operand has 223 places, 398 transitions, 6803 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:42:17,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 430 transitions, 7893 flow [2024-06-28 01:42:17,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 430 transitions, 7704 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:17,682 INFO L231 Difference]: Finished difference. Result has 226 places, 400 transitions, 6942 flow [2024-06-28 01:42:17,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6614, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6942, PETRI_PLACES=226, PETRI_TRANSITIONS=400} [2024-06-28 01:42:17,683 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 187 predicate places. [2024-06-28 01:42:17,683 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 400 transitions, 6942 flow [2024-06-28 01:42:17,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:17,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:17,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:17,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:42:17,683 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:17,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1812472510, now seen corresponding path program 1 times [2024-06-28 01:42:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:17,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871263148] [2024-06-28 01:42:17,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:17,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:18,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871263148] [2024-06-28 01:42:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871263148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:18,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:18,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:18,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132090320] [2024-06-28 01:42:18,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:18,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:18,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:18,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:18,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:18,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:18,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 400 transitions, 6942 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:18,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:18,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:18,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:18,990 INFO L124 PetriNetUnfolderBase]: 1634/2753 cut-off events. [2024-06-28 01:42:18,990 INFO L125 PetriNetUnfolderBase]: For 73933/73933 co-relation queries the response was YES. [2024-06-28 01:42:19,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21937 conditions, 2753 events. 1634/2753 cut-off events. For 73933/73933 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 15963 event pairs, 406 based on Foata normal form. 2/2706 useless extension candidates. Maximal degree in co-relation 21833. Up to 2474 conditions per place. [2024-06-28 01:42:19,013 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 393 selfloop transitions, 41 changer transitions 0/440 dead transitions. [2024-06-28 01:42:19,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 440 transitions, 8172 flow [2024-06-28 01:42:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:42:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 01:42:19,014 INFO L175 Difference]: Start difference. First operand has 226 places, 400 transitions, 6942 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:42:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 440 transitions, 8172 flow [2024-06-28 01:42:19,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 440 transitions, 7858 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:19,210 INFO L231 Difference]: Finished difference. Result has 229 places, 402 transitions, 6813 flow [2024-06-28 01:42:19,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6632, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6813, PETRI_PLACES=229, PETRI_TRANSITIONS=402} [2024-06-28 01:42:19,211 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2024-06-28 01:42:19,211 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 402 transitions, 6813 flow [2024-06-28 01:42:19,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:19,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:19,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:19,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:42:19,211 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:19,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash -408183277, now seen corresponding path program 7 times [2024-06-28 01:42:19,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:19,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312557245] [2024-06-28 01:42:19,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:19,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:19,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312557245] [2024-06-28 01:42:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312557245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:19,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:19,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:19,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427688728] [2024-06-28 01:42:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:19,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:19,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:19,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:19,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:19,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:19,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 402 transitions, 6813 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:19,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:19,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:19,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:20,488 INFO L124 PetriNetUnfolderBase]: 1649/2776 cut-off events. [2024-06-28 01:42:20,489 INFO L125 PetriNetUnfolderBase]: For 73796/73796 co-relation queries the response was YES. [2024-06-28 01:42:20,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21893 conditions, 2776 events. 1649/2776 cut-off events. For 73796/73796 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 16103 event pairs, 280 based on Foata normal form. 2/2729 useless extension candidates. Maximal degree in co-relation 21788. Up to 2255 conditions per place. [2024-06-28 01:42:20,515 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 327 selfloop transitions, 96 changer transitions 0/429 dead transitions. [2024-06-28 01:42:20,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 429 transitions, 7861 flow [2024-06-28 01:42:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:20,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:42:20,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475 [2024-06-28 01:42:20,517 INFO L175 Difference]: Start difference. First operand has 229 places, 402 transitions, 6813 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:42:20,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 429 transitions, 7861 flow [2024-06-28 01:42:20,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 429 transitions, 7708 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:20,735 INFO L231 Difference]: Finished difference. Result has 230 places, 404 transitions, 6959 flow [2024-06-28 01:42:20,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6660, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6959, PETRI_PLACES=230, PETRI_TRANSITIONS=404} [2024-06-28 01:42:20,736 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 191 predicate places. [2024-06-28 01:42:20,736 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 404 transitions, 6959 flow [2024-06-28 01:42:20,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:20,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:20,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:20,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:42:20,736 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:20,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2058877761, now seen corresponding path program 8 times [2024-06-28 01:42:20,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:20,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103910168] [2024-06-28 01:42:20,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:20,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:20,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:21,341 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 01:42:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103910168] [2024-06-28 01:42:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103910168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:21,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:21,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:21,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054496808] [2024-06-28 01:42:21,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:21,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:21,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:21,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:21,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:21,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:21,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 404 transitions, 6959 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:21,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:21,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:21,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:22,146 INFO L124 PetriNetUnfolderBase]: 1664/2804 cut-off events. [2024-06-28 01:42:22,146 INFO L125 PetriNetUnfolderBase]: For 75310/75310 co-relation queries the response was YES. [2024-06-28 01:42:22,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22177 conditions, 2804 events. 1664/2804 cut-off events. For 75310/75310 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16356 event pairs, 295 based on Foata normal form. 2/2757 useless extension candidates. Maximal degree in co-relation 22071. Up to 2268 conditions per place. [2024-06-28 01:42:22,175 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 307 selfloop transitions, 119 changer transitions 0/432 dead transitions. [2024-06-28 01:42:22,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 432 transitions, 8035 flow [2024-06-28 01:42:22,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:22,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:22,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:42:22,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 01:42:22,177 INFO L175 Difference]: Start difference. First operand has 230 places, 404 transitions, 6959 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:42:22,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 432 transitions, 8035 flow [2024-06-28 01:42:22,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 432 transitions, 7770 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:22,412 INFO L231 Difference]: Finished difference. Result has 232 places, 406 transitions, 7047 flow [2024-06-28 01:42:22,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6706, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7047, PETRI_PLACES=232, PETRI_TRANSITIONS=406} [2024-06-28 01:42:22,413 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 193 predicate places. [2024-06-28 01:42:22,413 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 406 transitions, 7047 flow [2024-06-28 01:42:22,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:22,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:22,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:22,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:42:22,413 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:22,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:22,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2058877916, now seen corresponding path program 3 times [2024-06-28 01:42:22,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:22,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471610385] [2024-06-28 01:42:22,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:22,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:22,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:22,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471610385] [2024-06-28 01:42:22,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471610385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:22,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:22,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042443738] [2024-06-28 01:42:22,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:22,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:22,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:22,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:23,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:23,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 406 transitions, 7047 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:23,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:23,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:23,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:23,731 INFO L124 PetriNetUnfolderBase]: 1662/2793 cut-off events. [2024-06-28 01:42:23,731 INFO L125 PetriNetUnfolderBase]: For 69071/69071 co-relation queries the response was YES. [2024-06-28 01:42:23,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21938 conditions, 2793 events. 1662/2793 cut-off events. For 69071/69071 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16196 event pairs, 277 based on Foata normal form. 1/2742 useless extension candidates. Maximal degree in co-relation 21831. Up to 2362 conditions per place. [2024-06-28 01:42:23,759 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 334 selfloop transitions, 112 changer transitions 0/452 dead transitions. [2024-06-28 01:42:23,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 452 transitions, 8563 flow [2024-06-28 01:42:23,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:23,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:23,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:42:23,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-28 01:42:23,761 INFO L175 Difference]: Start difference. First operand has 232 places, 406 transitions, 7047 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:42:23,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 452 transitions, 8563 flow [2024-06-28 01:42:23,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 452 transitions, 8264 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:23,992 INFO L231 Difference]: Finished difference. Result has 237 places, 422 transitions, 7509 flow [2024-06-28 01:42:23,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6762, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7509, PETRI_PLACES=237, PETRI_TRANSITIONS=422} [2024-06-28 01:42:23,992 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 198 predicate places. [2024-06-28 01:42:23,993 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 422 transitions, 7509 flow [2024-06-28 01:42:23,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:23,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:23,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:23,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:42:23,993 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:23,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:23,994 INFO L85 PathProgramCache]: Analyzing trace with hash 2059027863, now seen corresponding path program 2 times [2024-06-28 01:42:23,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986570122] [2024-06-28 01:42:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:23,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986570122] [2024-06-28 01:42:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986570122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:24,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126222990] [2024-06-28 01:42:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:24,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:24,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:24,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:24,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:24,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:24,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 422 transitions, 7509 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 01:42:24,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:24,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:24,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:25,115 INFO L124 PetriNetUnfolderBase]: 1658/2787 cut-off events. [2024-06-28 01:42:25,115 INFO L125 PetriNetUnfolderBase]: For 64953/64953 co-relation queries the response was YES. [2024-06-28 01:42:25,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21836 conditions, 2787 events. 1658/2787 cut-off events. For 64953/64953 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16216 event pairs, 209 based on Foata normal form. 2/2740 useless extension candidates. Maximal degree in co-relation 21726. Up to 1796 conditions per place. [2024-06-28 01:42:25,142 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 234 selfloop transitions, 214 changer transitions 0/454 dead transitions. [2024-06-28 01:42:25,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 454 transitions, 8689 flow [2024-06-28 01:42:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:42:25,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-28 01:42:25,144 INFO L175 Difference]: Start difference. First operand has 237 places, 422 transitions, 7509 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:42:25,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 454 transitions, 8689 flow [2024-06-28 01:42:25,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 454 transitions, 8350 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:25,367 INFO L231 Difference]: Finished difference. Result has 240 places, 428 transitions, 7870 flow [2024-06-28 01:42:25,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7190, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7870, PETRI_PLACES=240, PETRI_TRANSITIONS=428} [2024-06-28 01:42:25,367 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2024-06-28 01:42:25,368 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 428 transitions, 7870 flow [2024-06-28 01:42:25,368 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 01:42:25,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:25,368 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:25,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:42:25,369 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:25,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -288896176, now seen corresponding path program 2 times [2024-06-28 01:42:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663572375] [2024-06-28 01:42:25,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:25,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:25,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:25,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:25,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663572375] [2024-06-28 01:42:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663572375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:25,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:25,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:25,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715214339] [2024-06-28 01:42:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:25,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:25,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:25,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:25,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 428 transitions, 7870 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:25,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:25,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:25,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:26,664 INFO L124 PetriNetUnfolderBase]: 1677/2821 cut-off events. [2024-06-28 01:42:26,664 INFO L125 PetriNetUnfolderBase]: For 72050/72050 co-relation queries the response was YES. [2024-06-28 01:42:26,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22898 conditions, 2821 events. 1677/2821 cut-off events. For 72050/72050 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 16456 event pairs, 371 based on Foata normal form. 2/2776 useless extension candidates. Maximal degree in co-relation 22786. Up to 2489 conditions per place. [2024-06-28 01:42:26,694 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 407 selfloop transitions, 54 changer transitions 0/467 dead transitions. [2024-06-28 01:42:26,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 467 transitions, 9199 flow [2024-06-28 01:42:26,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:26,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:42:26,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634920634920635 [2024-06-28 01:42:26,695 INFO L175 Difference]: Start difference. First operand has 240 places, 428 transitions, 7870 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:42:26,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 467 transitions, 9199 flow [2024-06-28 01:42:26,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 467 transitions, 8866 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:42:26,987 INFO L231 Difference]: Finished difference. Result has 244 places, 430 transitions, 7755 flow [2024-06-28 01:42:26,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7546, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7755, PETRI_PLACES=244, PETRI_TRANSITIONS=430} [2024-06-28 01:42:26,987 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 205 predicate places. [2024-06-28 01:42:26,987 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 430 transitions, 7755 flow [2024-06-28 01:42:26,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:26,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:26,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:42:26,988 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 01:42:26,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:26,988 INFO L85 PathProgramCache]: Analyzing trace with hash -289111657, now seen corresponding path program 9 times [2024-06-28 01:42:26,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143573318] [2024-06-28 01:42:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:26,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:27,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:27,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:27,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143573318] [2024-06-28 01:42:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143573318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:27,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:27,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:27,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006404397] [2024-06-28 01:42:27,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:27,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:27,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:27,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:27,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:27,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 430 transitions, 7755 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:27,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:27,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:27,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:28,325 INFO L124 PetriNetUnfolderBase]: 1692/2843 cut-off events. [2024-06-28 01:42:28,325 INFO L125 PetriNetUnfolderBase]: For 74235/74235 co-relation queries the response was YES. [2024-06-28 01:42:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22912 conditions, 2843 events. 1692/2843 cut-off events. For 74235/74235 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16563 event pairs, 228 based on Foata normal form. 2/2797 useless extension candidates. Maximal degree in co-relation 22799. Up to 2305 conditions per place. [2024-06-28 01:42:28,355 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 314 selfloop transitions, 138 changer transitions 0/458 dead transitions. [2024-06-28 01:42:28,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 458 transitions, 8883 flow [2024-06-28 01:42:28,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:28,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:42:28,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-28 01:42:28,356 INFO L175 Difference]: Start difference. First operand has 244 places, 430 transitions, 7755 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:42:28,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 458 transitions, 8883 flow [2024-06-28 01:42:28,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 458 transitions, 8698 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:28,633 INFO L231 Difference]: Finished difference. Result has 245 places, 432 transitions, 7929 flow [2024-06-28 01:42:28,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7572, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7929, PETRI_PLACES=245, PETRI_TRANSITIONS=432} [2024-06-28 01:42:28,634 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 206 predicate places. [2024-06-28 01:42:28,634 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 432 transitions, 7929 flow [2024-06-28 01:42:28,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:28,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:28,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:28,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:42:28,634 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:28,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:28,634 INFO L85 PathProgramCache]: Analyzing trace with hash 873897879, now seen corresponding path program 3 times [2024-06-28 01:42:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236197388] [2024-06-28 01:42:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:28,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:29,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:29,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:29,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236197388] [2024-06-28 01:42:29,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236197388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:29,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:29,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:29,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043881992] [2024-06-28 01:42:29,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:29,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:29,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:29,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:29,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:29,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 432 transitions, 7929 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 01:42:29,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:29,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:29,846 INFO L124 PetriNetUnfolderBase]: 1688/2827 cut-off events. [2024-06-28 01:42:29,846 INFO L125 PetriNetUnfolderBase]: For 69681/69681 co-relation queries the response was YES. [2024-06-28 01:42:29,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22736 conditions, 2827 events. 1688/2827 cut-off events. For 69681/69681 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16487 event pairs, 242 based on Foata normal form. 2/2779 useless extension candidates. Maximal degree in co-relation 22622. Up to 1866 conditions per place. [2024-06-28 01:42:29,879 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 264 selfloop transitions, 205 changer transitions 0/475 dead transitions. [2024-06-28 01:42:29,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 475 transitions, 9347 flow [2024-06-28 01:42:29,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:29,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:29,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:42:29,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2024-06-28 01:42:29,881 INFO L175 Difference]: Start difference. First operand has 245 places, 432 transitions, 7929 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:42:29,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 475 transitions, 9347 flow [2024-06-28 01:42:30,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 475 transitions, 8928 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:30,198 INFO L231 Difference]: Finished difference. Result has 251 places, 447 transitions, 8399 flow [2024-06-28 01:42:30,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8399, PETRI_PLACES=251, PETRI_TRANSITIONS=447} [2024-06-28 01:42:30,199 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2024-06-28 01:42:30,199 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 447 transitions, 8399 flow [2024-06-28 01:42:30,199 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 01:42:30,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:30,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:30,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:42:30,199 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:30,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 873891927, now seen corresponding path program 10 times [2024-06-28 01:42:30,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:30,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446040169] [2024-06-28 01:42:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:30,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:30,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446040169] [2024-06-28 01:42:30,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446040169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:30,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:30,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:30,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598886508] [2024-06-28 01:42:30,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:30,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:30,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 447 transitions, 8399 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:30,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:30,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:30,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:31,544 INFO L124 PetriNetUnfolderBase]: 1688/2827 cut-off events. [2024-06-28 01:42:31,544 INFO L125 PetriNetUnfolderBase]: For 66791/66791 co-relation queries the response was YES. [2024-06-28 01:42:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23199 conditions, 2827 events. 1688/2827 cut-off events. For 66791/66791 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16577 event pairs, 176 based on Foata normal form. 2/2779 useless extension candidates. Maximal degree in co-relation 23081. Up to 2282 conditions per place. [2024-06-28 01:42:31,574 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 325 selfloop transitions, 144 changer transitions 0/475 dead transitions. [2024-06-28 01:42:31,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 475 transitions, 9574 flow [2024-06-28 01:42:31,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:31,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:42:31,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:42:31,575 INFO L175 Difference]: Start difference. First operand has 251 places, 447 transitions, 8399 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:42:31,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 475 transitions, 9574 flow [2024-06-28 01:42:31,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 475 transitions, 9402 flow, removed 53 selfloop flow, removed 3 redundant places. [2024-06-28 01:42:31,955 INFO L231 Difference]: Finished difference. Result has 257 places, 449 transitions, 8592 flow [2024-06-28 01:42:31,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8227, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8592, PETRI_PLACES=257, PETRI_TRANSITIONS=449} [2024-06-28 01:42:31,956 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 218 predicate places. [2024-06-28 01:42:31,956 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 449 transitions, 8592 flow [2024-06-28 01:42:31,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:31,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:31,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:31,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:42:31,957 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:31,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:31,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1486701332, now seen corresponding path program 3 times [2024-06-28 01:42:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:31,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615083762] [2024-06-28 01:42:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:32,516 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 01:42:32,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:32,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615083762] [2024-06-28 01:42:32,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615083762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:32,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:32,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:32,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479008267] [2024-06-28 01:42:32,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:32,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:32,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:32,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:32,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:32,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:32,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 449 transitions, 8592 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:32,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:32,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:32,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:33,323 INFO L124 PetriNetUnfolderBase]: 1707/2877 cut-off events. [2024-06-28 01:42:33,323 INFO L125 PetriNetUnfolderBase]: For 75519/75519 co-relation queries the response was YES. [2024-06-28 01:42:33,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24021 conditions, 2877 events. 1707/2877 cut-off events. For 75519/75519 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 16974 event pairs, 339 based on Foata normal form. 2/2829 useless extension candidates. Maximal degree in co-relation 23901. Up to 2523 conditions per place. [2024-06-28 01:42:33,352 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 433 selfloop transitions, 54 changer transitions 0/493 dead transitions. [2024-06-28 01:42:33,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 493 transitions, 10066 flow [2024-06-28 01:42:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:33,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:42:33,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2024-06-28 01:42:33,354 INFO L175 Difference]: Start difference. First operand has 257 places, 449 transitions, 8592 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:42:33,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 493 transitions, 10066 flow [2024-06-28 01:42:33,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 493 transitions, 9707 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:33,656 INFO L231 Difference]: Finished difference. Result has 259 places, 451 transitions, 8449 flow [2024-06-28 01:42:33,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8243, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8449, PETRI_PLACES=259, PETRI_TRANSITIONS=451} [2024-06-28 01:42:33,657 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 220 predicate places. [2024-06-28 01:42:33,657 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 451 transitions, 8449 flow [2024-06-28 01:42:33,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:33,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:33,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:42:33,657 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:33,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:33,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1752725042, now seen corresponding path program 4 times [2024-06-28 01:42:33,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:33,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103171024] [2024-06-28 01:42:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:34,209 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 01:42:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:34,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103171024] [2024-06-28 01:42:34,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103171024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:34,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:34,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:34,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496456251] [2024-06-28 01:42:34,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:34,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:34,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:34,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:34,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:34,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:34,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 451 transitions, 8449 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:34,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:34,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:34,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:35,087 INFO L124 PetriNetUnfolderBase]: 1733/2918 cut-off events. [2024-06-28 01:42:35,087 INFO L125 PetriNetUnfolderBase]: For 80101/80101 co-relation queries the response was YES. [2024-06-28 01:42:35,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 2918 events. 1733/2918 cut-off events. For 80101/80101 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17191 event pairs, 470 based on Foata normal form. 2/2874 useless extension candidates. Maximal degree in co-relation 24207. Up to 2584 conditions per place. [2024-06-28 01:42:35,118 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 453 selfloop transitions, 37 changer transitions 0/496 dead transitions. [2024-06-28 01:42:35,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 496 transitions, 9966 flow [2024-06-28 01:42:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:35,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:42:35,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-28 01:42:35,119 INFO L175 Difference]: Start difference. First operand has 259 places, 451 transitions, 8449 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:42:35,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 496 transitions, 9966 flow [2024-06-28 01:42:35,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 496 transitions, 9778 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:35,481 INFO L231 Difference]: Finished difference. Result has 262 places, 455 transitions, 8528 flow [2024-06-28 01:42:35,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8261, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8528, PETRI_PLACES=262, PETRI_TRANSITIONS=455} [2024-06-28 01:42:35,481 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 223 predicate places. [2024-06-28 01:42:35,482 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 455 transitions, 8528 flow [2024-06-28 01:42:35,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:35,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:35,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:35,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:42:35,482 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:35,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1493843453, now seen corresponding path program 4 times [2024-06-28 01:42:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:35,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921521134] [2024-06-28 01:42:35,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:35,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:35,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921521134] [2024-06-28 01:42:35,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921521134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:35,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:35,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:42:35,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913561483] [2024-06-28 01:42:35,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:35,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:42:35,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:35,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:42:35,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:42:36,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:36,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 455 transitions, 8528 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 01:42:36,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:36,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:36,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:36,754 INFO L124 PetriNetUnfolderBase]: 1731/2912 cut-off events. [2024-06-28 01:42:36,754 INFO L125 PetriNetUnfolderBase]: For 76285/76285 co-relation queries the response was YES. [2024-06-28 01:42:36,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23942 conditions, 2912 events. 1731/2912 cut-off events. For 76285/76285 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17153 event pairs, 482 based on Foata normal form. 2/2869 useless extension candidates. Maximal degree in co-relation 23820. Up to 2660 conditions per place. [2024-06-28 01:42:36,785 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 445 selfloop transitions, 31 changer transitions 0/482 dead transitions. [2024-06-28 01:42:36,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 482 transitions, 9742 flow [2024-06-28 01:42:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:42:36,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:42:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:42:36,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-28 01:42:36,786 INFO L175 Difference]: Start difference. First operand has 262 places, 455 transitions, 8528 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:42:36,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 482 transitions, 9742 flow [2024-06-28 01:42:37,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 482 transitions, 9481 flow, removed 110 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:37,137 INFO L231 Difference]: Finished difference. Result has 264 places, 458 transitions, 8438 flow [2024-06-28 01:42:37,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8317, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8438, PETRI_PLACES=264, PETRI_TRANSITIONS=458} [2024-06-28 01:42:37,137 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 225 predicate places. [2024-06-28 01:42:37,138 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 458 transitions, 8438 flow [2024-06-28 01:42:37,138 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 01:42:37,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:37,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:42:37,138 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:37,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:37,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1743201842, now seen corresponding path program 5 times [2024-06-28 01:42:37,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:37,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523681776] [2024-06-28 01:42:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:37,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523681776] [2024-06-28 01:42:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523681776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:37,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18894680] [2024-06-28 01:42:37,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:37,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:37,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:37,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:37,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:37,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:37,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 458 transitions, 8438 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:37,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:37,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:37,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:38,631 INFO L124 PetriNetUnfolderBase]: 1750/2948 cut-off events. [2024-06-28 01:42:38,631 INFO L125 PetriNetUnfolderBase]: For 72518/72518 co-relation queries the response was YES. [2024-06-28 01:42:38,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23796 conditions, 2948 events. 1750/2948 cut-off events. For 72518/72518 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 17461 event pairs, 486 based on Foata normal form. 2/2904 useless extension candidates. Maximal degree in co-relation 23672. Up to 2703 conditions per place. [2024-06-28 01:42:38,666 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 463 selfloop transitions, 25 changer transitions 0/494 dead transitions. [2024-06-28 01:42:38,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 494 transitions, 9713 flow [2024-06-28 01:42:38,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:42:38,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:42:38,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:42:38,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:42:38,667 INFO L175 Difference]: Start difference. First operand has 264 places, 458 transitions, 8438 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:42:38,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 494 transitions, 9713 flow [2024-06-28 01:42:39,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 494 transitions, 9457 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:39,038 INFO L231 Difference]: Finished difference. Result has 267 places, 460 transitions, 8325 flow [2024-06-28 01:42:39,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8195, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8325, PETRI_PLACES=267, PETRI_TRANSITIONS=460} [2024-06-28 01:42:39,039 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 228 predicate places. [2024-06-28 01:42:39,039 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 460 transitions, 8325 flow [2024-06-28 01:42:39,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:39,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:39,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:39,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:42:39,039 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:39,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1752398612, now seen corresponding path program 6 times [2024-06-28 01:42:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775605656] [2024-06-28 01:42:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:39,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:39,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775605656] [2024-06-28 01:42:39,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775605656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:39,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:39,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828742100] [2024-06-28 01:42:39,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:39,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:39,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:39,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:39,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 460 transitions, 8325 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:39,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:39,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:39,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:40,483 INFO L124 PetriNetUnfolderBase]: 1747/2952 cut-off events. [2024-06-28 01:42:40,483 INFO L125 PetriNetUnfolderBase]: For 68686/68686 co-relation queries the response was YES. [2024-06-28 01:42:40,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23604 conditions, 2952 events. 1747/2952 cut-off events. For 68686/68686 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 17501 event pairs, 480 based on Foata normal form. 2/2905 useless extension candidates. Maximal degree in co-relation 23479. Up to 2650 conditions per place. [2024-06-28 01:42:40,517 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 456 selfloop transitions, 37 changer transitions 0/499 dead transitions. [2024-06-28 01:42:40,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 499 transitions, 9559 flow [2024-06-28 01:42:40,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:40,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:42:40,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 01:42:40,519 INFO L175 Difference]: Start difference. First operand has 267 places, 460 transitions, 8325 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:42:40,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 499 transitions, 9559 flow [2024-06-28 01:42:40,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 499 transitions, 9385 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:40,848 INFO L231 Difference]: Finished difference. Result has 270 places, 460 transitions, 8235 flow [2024-06-28 01:42:40,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8151, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8235, PETRI_PLACES=270, PETRI_TRANSITIONS=460} [2024-06-28 01:42:40,849 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2024-06-28 01:42:40,849 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 460 transitions, 8235 flow [2024-06-28 01:42:40,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:40,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:40,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:40,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:42:40,849 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:40,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:40,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1827957044, now seen corresponding path program 1 times [2024-06-28 01:42:40,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:40,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261684515] [2024-06-28 01:42:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:40,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:40,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:40,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:40,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:40,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261684515] [2024-06-28 01:42:40,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261684515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:40,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:40,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:42:40,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177089909] [2024-06-28 01:42:40,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:40,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:42:40,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:42:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:42:40,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-06-28 01:42:40,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 460 transitions, 8235 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 01:42:40,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:40,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-06-28 01:42:40,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:41,255 INFO L124 PetriNetUnfolderBase]: 847/1667 cut-off events. [2024-06-28 01:42:41,255 INFO L125 PetriNetUnfolderBase]: For 42403/42654 co-relation queries the response was YES. [2024-06-28 01:42:41,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11642 conditions, 1667 events. 847/1667 cut-off events. For 42403/42654 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 10662 event pairs, 173 based on Foata normal form. 246/1798 useless extension candidates. Maximal degree in co-relation 11517. Up to 498 conditions per place. [2024-06-28 01:42:41,274 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 122 selfloop transitions, 73 changer transitions 0/278 dead transitions. [2024-06-28 01:42:41,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 278 transitions, 5155 flow [2024-06-28 01:42:41,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:42:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:42:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2024-06-28 01:42:41,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6642857142857143 [2024-06-28 01:42:41,275 INFO L175 Difference]: Start difference. First operand has 270 places, 460 transitions, 8235 flow. Second operand 4 states and 93 transitions. [2024-06-28 01:42:41,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 278 transitions, 5155 flow [2024-06-28 01:42:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 278 transitions, 4293 flow, removed 25 selfloop flow, removed 53 redundant places. [2024-06-28 01:42:41,462 INFO L231 Difference]: Finished difference. Result has 222 places, 261 transitions, 3993 flow [2024-06-28 01:42:41,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3695, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3993, PETRI_PLACES=222, PETRI_TRANSITIONS=261} [2024-06-28 01:42:41,463 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 183 predicate places. [2024-06-28 01:42:41,463 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 261 transitions, 3993 flow [2024-06-28 01:42:41,463 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 01:42:41,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:41,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:42:41,463 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:41,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -436528948, now seen corresponding path program 1 times [2024-06-28 01:42:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:41,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545736335] [2024-06-28 01:42:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:41,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545736335] [2024-06-28 01:42:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545736335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:42,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:42,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:42,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478568375] [2024-06-28 01:42:42,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:42,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:42,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:42,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:42,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:42,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:42,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 261 transitions, 3993 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:42,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:42,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:42,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:42,623 INFO L124 PetriNetUnfolderBase]: 1069/1897 cut-off events. [2024-06-28 01:42:42,623 INFO L125 PetriNetUnfolderBase]: For 36943/36943 co-relation queries the response was YES. [2024-06-28 01:42:42,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13220 conditions, 1897 events. 1069/1897 cut-off events. For 36943/36943 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 10502 event pairs, 197 based on Foata normal form. 2/1782 useless extension candidates. Maximal degree in co-relation 13112. Up to 1602 conditions per place. [2024-06-28 01:42:42,640 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 235 selfloop transitions, 49 changer transitions 0/291 dead transitions. [2024-06-28 01:42:42,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 291 transitions, 4791 flow [2024-06-28 01:42:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:42:42,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:42:42,641 INFO L175 Difference]: Start difference. First operand has 222 places, 261 transitions, 3993 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:42:42,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 291 transitions, 4791 flow [2024-06-28 01:42:42,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 291 transitions, 4693 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-28 01:42:42,796 INFO L231 Difference]: Finished difference. Result has 228 places, 263 transitions, 4096 flow [2024-06-28 01:42:42,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3903, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4096, PETRI_PLACES=228, PETRI_TRANSITIONS=263} [2024-06-28 01:42:42,798 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 189 predicate places. [2024-06-28 01:42:42,798 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 263 transitions, 4096 flow [2024-06-28 01:42:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:42,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:42,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:42,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:42:42,799 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:42,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:42,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1794687940, now seen corresponding path program 2 times [2024-06-28 01:42:42,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398342185] [2024-06-28 01:42:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:42,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:43,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:43,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:43,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398342185] [2024-06-28 01:42:43,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398342185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:43,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:43,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:43,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203852797] [2024-06-28 01:42:43,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:43,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:43,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:43,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:43,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:43,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:43,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 263 transitions, 4096 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:43,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:43,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:43,912 INFO L124 PetriNetUnfolderBase]: 1095/1945 cut-off events. [2024-06-28 01:42:43,913 INFO L125 PetriNetUnfolderBase]: For 42010/42010 co-relation queries the response was YES. [2024-06-28 01:42:43,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13888 conditions, 1945 events. 1095/1945 cut-off events. For 42010/42010 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10870 event pairs, 249 based on Foata normal form. 2/1829 useless extension candidates. Maximal degree in co-relation 13779. Up to 1640 conditions per place. [2024-06-28 01:42:43,933 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 235 selfloop transitions, 53 changer transitions 0/295 dead transitions. [2024-06-28 01:42:43,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 295 transitions, 4982 flow [2024-06-28 01:42:43,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:43,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:42:43,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-06-28 01:42:43,934 INFO L175 Difference]: Start difference. First operand has 228 places, 263 transitions, 4096 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:42:43,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 295 transitions, 4982 flow [2024-06-28 01:42:44,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 295 transitions, 4727 flow, removed 80 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:44,116 INFO L231 Difference]: Finished difference. Result has 230 places, 267 transitions, 4142 flow [2024-06-28 01:42:44,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3923, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4142, PETRI_PLACES=230, PETRI_TRANSITIONS=267} [2024-06-28 01:42:44,117 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 191 predicate places. [2024-06-28 01:42:44,117 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 267 transitions, 4142 flow [2024-06-28 01:42:44,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:44,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:44,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:44,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:42:44,117 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:44,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:44,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2099619772, now seen corresponding path program 3 times [2024-06-28 01:42:44,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:44,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909038140] [2024-06-28 01:42:44,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:44,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:44,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:44,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:44,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909038140] [2024-06-28 01:42:44,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909038140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:44,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:44,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:44,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864349280] [2024-06-28 01:42:44,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:44,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:44,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:44,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:44,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:44,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:44,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 267 transitions, 4142 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:44,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:44,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:44,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:45,157 INFO L124 PetriNetUnfolderBase]: 1128/2002 cut-off events. [2024-06-28 01:42:45,157 INFO L125 PetriNetUnfolderBase]: For 44329/44329 co-relation queries the response was YES. [2024-06-28 01:42:45,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14155 conditions, 2002 events. 1128/2002 cut-off events. For 44329/44329 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 11258 event pairs, 154 based on Foata normal form. 2/1885 useless extension candidates. Maximal degree in co-relation 14045. Up to 1635 conditions per place. [2024-06-28 01:42:45,176 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 238 selfloop transitions, 59 changer transitions 0/304 dead transitions. [2024-06-28 01:42:45,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 304 transitions, 5092 flow [2024-06-28 01:42:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:45,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:45,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:42:45,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43714285714285717 [2024-06-28 01:42:45,178 INFO L175 Difference]: Start difference. First operand has 230 places, 267 transitions, 4142 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:42:45,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 304 transitions, 5092 flow [2024-06-28 01:42:45,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 304 transitions, 4831 flow, removed 80 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:45,352 INFO L231 Difference]: Finished difference. Result has 232 places, 273 transitions, 4220 flow [2024-06-28 01:42:45,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3963, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4220, PETRI_PLACES=232, PETRI_TRANSITIONS=273} [2024-06-28 01:42:45,353 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 193 predicate places. [2024-06-28 01:42:45,353 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 273 transitions, 4220 flow [2024-06-28 01:42:45,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:45,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:45,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:42:45,353 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:45,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:45,353 INFO L85 PathProgramCache]: Analyzing trace with hash 470092368, now seen corresponding path program 4 times [2024-06-28 01:42:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:45,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345571082] [2024-06-28 01:42:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:45,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:45,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:45,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345571082] [2024-06-28 01:42:45,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345571082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:45,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:45,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:45,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740903972] [2024-06-28 01:42:45,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:45,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:45,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:45,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:45,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:45,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:45,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 273 transitions, 4220 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:45,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:45,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:45,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:46,497 INFO L124 PetriNetUnfolderBase]: 1163/2065 cut-off events. [2024-06-28 01:42:46,497 INFO L125 PetriNetUnfolderBase]: For 48880/48880 co-relation queries the response was YES. [2024-06-28 01:42:46,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14830 conditions, 2065 events. 1163/2065 cut-off events. For 48880/48880 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11732 event pairs, 280 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 14719. Up to 1733 conditions per place. [2024-06-28 01:42:46,517 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 235 selfloop transitions, 63 changer transitions 0/305 dead transitions. [2024-06-28 01:42:46,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 305 transitions, 5254 flow [2024-06-28 01:42:46,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:46,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:42:46,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:42:46,518 INFO L175 Difference]: Start difference. First operand has 232 places, 273 transitions, 4220 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:42:46,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 305 transitions, 5254 flow [2024-06-28 01:42:46,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 305 transitions, 5065 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:46,739 INFO L231 Difference]: Finished difference. Result has 234 places, 277 transitions, 4359 flow [2024-06-28 01:42:46,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4031, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4359, PETRI_PLACES=234, PETRI_TRANSITIONS=277} [2024-06-28 01:42:46,739 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 195 predicate places. [2024-06-28 01:42:46,739 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 277 transitions, 4359 flow [2024-06-28 01:42:46,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:46,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:46,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:46,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:42:46,740 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:46,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:46,740 INFO L85 PathProgramCache]: Analyzing trace with hash 450434958, now seen corresponding path program 5 times [2024-06-28 01:42:46,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:46,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447532941] [2024-06-28 01:42:46,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:46,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:47,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:47,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447532941] [2024-06-28 01:42:47,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447532941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:47,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:47,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:47,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932544445] [2024-06-28 01:42:47,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:47,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:47,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:47,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:47,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:47,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:47,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 277 transitions, 4359 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:47,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:47,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:47,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:47,877 INFO L124 PetriNetUnfolderBase]: 1160/2061 cut-off events. [2024-06-28 01:42:47,877 INFO L125 PetriNetUnfolderBase]: For 46358/46358 co-relation queries the response was YES. [2024-06-28 01:42:47,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14500 conditions, 2061 events. 1160/2061 cut-off events. For 46358/46358 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11692 event pairs, 290 based on Foata normal form. 2/1943 useless extension candidates. Maximal degree in co-relation 14388. Up to 1803 conditions per place. [2024-06-28 01:42:47,897 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 232 selfloop transitions, 63 changer transitions 0/302 dead transitions. [2024-06-28 01:42:47,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 302 transitions, 5077 flow [2024-06-28 01:42:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:47,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:42:47,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257142857142857 [2024-06-28 01:42:47,898 INFO L175 Difference]: Start difference. First operand has 234 places, 277 transitions, 4359 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:42:47,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 302 transitions, 5077 flow [2024-06-28 01:42:48,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 302 transitions, 4821 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:48,127 INFO L231 Difference]: Finished difference. Result has 238 places, 277 transitions, 4239 flow [2024-06-28 01:42:48,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4103, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4239, PETRI_PLACES=238, PETRI_TRANSITIONS=277} [2024-06-28 01:42:48,128 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2024-06-28 01:42:48,128 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 277 transitions, 4239 flow [2024-06-28 01:42:48,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:48,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:48,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:48,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:42:48,128 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:48,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:48,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1714899650, now seen corresponding path program 1 times [2024-06-28 01:42:48,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465903840] [2024-06-28 01:42:48,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:48,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:48,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:48,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:48,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465903840] [2024-06-28 01:42:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465903840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63681183] [2024-06-28 01:42:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:48,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:48,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:48,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 277 transitions, 4239 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:48,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:48,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:48,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:49,295 INFO L124 PetriNetUnfolderBase]: 1262/2243 cut-off events. [2024-06-28 01:42:49,295 INFO L125 PetriNetUnfolderBase]: For 55269/55269 co-relation queries the response was YES. [2024-06-28 01:42:49,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15200 conditions, 2243 events. 1262/2243 cut-off events. For 55269/55269 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13008 event pairs, 289 based on Foata normal form. 10/2125 useless extension candidates. Maximal degree in co-relation 15086. Up to 1853 conditions per place. [2024-06-28 01:42:49,317 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 252 selfloop transitions, 57 changer transitions 0/316 dead transitions. [2024-06-28 01:42:49,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 316 transitions, 5173 flow [2024-06-28 01:42:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:42:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:42:49,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:42:49,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 01:42:49,319 INFO L175 Difference]: Start difference. First operand has 238 places, 277 transitions, 4239 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:42:49,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 316 transitions, 5173 flow [2024-06-28 01:42:49,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 316 transitions, 5029 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:49,530 INFO L231 Difference]: Finished difference. Result has 241 places, 284 transitions, 4366 flow [2024-06-28 01:42:49,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4101, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4366, PETRI_PLACES=241, PETRI_TRANSITIONS=284} [2024-06-28 01:42:49,531 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 202 predicate places. [2024-06-28 01:42:49,531 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 284 transitions, 4366 flow [2024-06-28 01:42:49,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:49,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:49,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:49,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:42:49,531 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:49,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash -897934072, now seen corresponding path program 6 times [2024-06-28 01:42:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392190638] [2024-06-28 01:42:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:50,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:50,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392190638] [2024-06-28 01:42:50,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392190638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:50,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:50,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144074223] [2024-06-28 01:42:50,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:50,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:50,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:50,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:50,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 284 transitions, 4366 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:50,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:50,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:50,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:50,862 INFO L124 PetriNetUnfolderBase]: 1298/2308 cut-off events. [2024-06-28 01:42:50,862 INFO L125 PetriNetUnfolderBase]: For 50032/50032 co-relation queries the response was YES. [2024-06-28 01:42:50,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15863 conditions, 2308 events. 1298/2308 cut-off events. For 50032/50032 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13503 event pairs, 316 based on Foata normal form. 2/2179 useless extension candidates. Maximal degree in co-relation 15747. Up to 2033 conditions per place. [2024-06-28 01:42:50,884 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 241 selfloop transitions, 65 changer transitions 0/313 dead transitions. [2024-06-28 01:42:50,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 313 transitions, 5226 flow [2024-06-28 01:42:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:50,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 01:42:50,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 01:42:50,885 INFO L175 Difference]: Start difference. First operand has 241 places, 284 transitions, 4366 flow. Second operand 10 states and 150 transitions. [2024-06-28 01:42:50,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 313 transitions, 5226 flow [2024-06-28 01:42:51,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 313 transitions, 5114 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:51,151 INFO L231 Difference]: Finished difference. Result has 245 places, 290 transitions, 4542 flow [2024-06-28 01:42:51,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4256, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4542, PETRI_PLACES=245, PETRI_TRANSITIONS=290} [2024-06-28 01:42:51,151 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 206 predicate places. [2024-06-28 01:42:51,151 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 290 transitions, 4542 flow [2024-06-28 01:42:51,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:51,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:51,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:51,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:42:51,152 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:51,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:51,152 INFO L85 PathProgramCache]: Analyzing trace with hash -866112252, now seen corresponding path program 7 times [2024-06-28 01:42:51,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:51,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487613128] [2024-06-28 01:42:51,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:51,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:51,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:51,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:51,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487613128] [2024-06-28 01:42:51,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487613128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:51,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:51,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:51,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133186991] [2024-06-28 01:42:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:51,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:51,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:51,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:51,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:51,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 290 transitions, 4542 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:51,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:51,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:51,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:52,498 INFO L124 PetriNetUnfolderBase]: 1324/2355 cut-off events. [2024-06-28 01:42:52,499 INFO L125 PetriNetUnfolderBase]: For 53666/53666 co-relation queries the response was YES. [2024-06-28 01:42:52,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16352 conditions, 2355 events. 1324/2355 cut-off events. For 53666/53666 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13856 event pairs, 315 based on Foata normal form. 2/2227 useless extension candidates. Maximal degree in co-relation 16235. Up to 1999 conditions per place. [2024-06-28 01:42:52,518 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 245 selfloop transitions, 67 changer transitions 0/319 dead transitions. [2024-06-28 01:42:52,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 319 transitions, 5412 flow [2024-06-28 01:42:52,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:42:52,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:42:52,520 INFO L175 Difference]: Start difference. First operand has 245 places, 290 transitions, 4542 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:42:52,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 319 transitions, 5412 flow [2024-06-28 01:42:52,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 319 transitions, 5218 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:52,780 INFO L231 Difference]: Finished difference. Result has 248 places, 294 transitions, 4614 flow [2024-06-28 01:42:52,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4614, PETRI_PLACES=248, PETRI_TRANSITIONS=294} [2024-06-28 01:42:52,781 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 209 predicate places. [2024-06-28 01:42:52,781 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 294 transitions, 4614 flow [2024-06-28 01:42:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:52,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:52,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:42:52,781 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:52,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:52,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1038813984, now seen corresponding path program 2 times [2024-06-28 01:42:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410700744] [2024-06-28 01:42:52,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:52,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:53,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:53,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410700744] [2024-06-28 01:42:53,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410700744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:53,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:53,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308002102] [2024-06-28 01:42:53,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:53,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:53,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:53,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 294 transitions, 4614 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 01:42:53,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:53,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:53,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:53,987 INFO L124 PetriNetUnfolderBase]: 1392/2485 cut-off events. [2024-06-28 01:42:53,987 INFO L125 PetriNetUnfolderBase]: For 69220/69220 co-relation queries the response was YES. [2024-06-28 01:42:54,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17055 conditions, 2485 events. 1392/2485 cut-off events. For 69220/69220 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14887 event pairs, 341 based on Foata normal form. 10/2366 useless extension candidates. Maximal degree in co-relation 16937. Up to 1804 conditions per place. [2024-06-28 01:42:54,012 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 212 selfloop transitions, 104 changer transitions 0/323 dead transitions. [2024-06-28 01:42:54,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 323 transitions, 5478 flow [2024-06-28 01:42:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:42:54,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-06-28 01:42:54,013 INFO L175 Difference]: Start difference. First operand has 248 places, 294 transitions, 4614 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:42:54,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 323 transitions, 5478 flow [2024-06-28 01:42:54,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 323 transitions, 5263 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:42:54,285 INFO L231 Difference]: Finished difference. Result has 251 places, 295 transitions, 4683 flow [2024-06-28 01:42:54,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4683, PETRI_PLACES=251, PETRI_TRANSITIONS=295} [2024-06-28 01:42:54,285 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 212 predicate places. [2024-06-28 01:42:54,285 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 295 transitions, 4683 flow [2024-06-28 01:42:54,285 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 01:42:54,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:54,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:54,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:42:54,286 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:54,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:54,286 INFO L85 PathProgramCache]: Analyzing trace with hash 278337604, now seen corresponding path program 3 times [2024-06-28 01:42:54,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:54,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650359109] [2024-06-28 01:42:54,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:54,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:54,752 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 01:42:54,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:54,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650359109] [2024-06-28 01:42:54,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650359109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:54,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:54,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:54,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206558430] [2024-06-28 01:42:54,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:54,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:54,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:54,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:54,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:54,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:54,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 295 transitions, 4683 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 01:42:54,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:54,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:54,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:55,505 INFO L124 PetriNetUnfolderBase]: 1544/2772 cut-off events. [2024-06-28 01:42:55,505 INFO L125 PetriNetUnfolderBase]: For 95768/95768 co-relation queries the response was YES. [2024-06-28 01:42:55,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19738 conditions, 2772 events. 1544/2772 cut-off events. For 95768/95768 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 17186 event pairs, 383 based on Foata normal form. 8/2655 useless extension candidates. Maximal degree in co-relation 19619. Up to 1632 conditions per place. [2024-06-28 01:42:55,532 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 227 selfloop transitions, 98 changer transitions 0/332 dead transitions. [2024-06-28 01:42:55,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 332 transitions, 5839 flow [2024-06-28 01:42:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:55,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:55,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:42:55,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46285714285714286 [2024-06-28 01:42:55,533 INFO L175 Difference]: Start difference. First operand has 251 places, 295 transitions, 4683 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:42:55,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 332 transitions, 5839 flow [2024-06-28 01:42:55,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 332 transitions, 5602 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:42:55,816 INFO L231 Difference]: Finished difference. Result has 252 places, 297 transitions, 4768 flow [2024-06-28 01:42:55,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4446, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4768, PETRI_PLACES=252, PETRI_TRANSITIONS=297} [2024-06-28 01:42:55,816 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 213 predicate places. [2024-06-28 01:42:55,816 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 297 transitions, 4768 flow [2024-06-28 01:42:55,816 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 01:42:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:55,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:55,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:42:55,817 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:55,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash 352065338, now seen corresponding path program 4 times [2024-06-28 01:42:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601381607] [2024-06-28 01:42:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:56,278 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 01:42:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601381607] [2024-06-28 01:42:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601381607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:56,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:56,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:42:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329036224] [2024-06-28 01:42:56,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:56,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:42:56,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:56,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:42:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:42:56,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:56,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 297 transitions, 4768 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 01:42:56,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:56,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:56,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:57,008 INFO L124 PetriNetUnfolderBase]: 1590/2864 cut-off events. [2024-06-28 01:42:57,008 INFO L125 PetriNetUnfolderBase]: For 103332/103332 co-relation queries the response was YES. [2024-06-28 01:42:57,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20299 conditions, 2864 events. 1590/2864 cut-off events. For 103332/103332 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 18016 event pairs, 448 based on Foata normal form. 12/2738 useless extension candidates. Maximal degree in co-relation 20179. Up to 2302 conditions per place. [2024-06-28 01:42:57,043 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 225 selfloop transitions, 95 changer transitions 0/327 dead transitions. [2024-06-28 01:42:57,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 327 transitions, 5696 flow [2024-06-28 01:42:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:42:57,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-28 01:42:57,044 INFO L175 Difference]: Start difference. First operand has 252 places, 297 transitions, 4768 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:42:57,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 327 transitions, 5696 flow [2024-06-28 01:42:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 327 transitions, 5524 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:42:57,369 INFO L231 Difference]: Finished difference. Result has 256 places, 299 transitions, 4914 flow [2024-06-28 01:42:57,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4600, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4914, PETRI_PLACES=256, PETRI_TRANSITIONS=299} [2024-06-28 01:42:57,369 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 217 predicate places. [2024-06-28 01:42:57,370 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 299 transitions, 4914 flow [2024-06-28 01:42:57,370 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 01:42:57,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:57,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:57,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:42:57,370 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:57,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:57,371 INFO L85 PathProgramCache]: Analyzing trace with hash 345398664, now seen corresponding path program 8 times [2024-06-28 01:42:57,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:57,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251643611] [2024-06-28 01:42:57,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:57,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:57,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:57,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251643611] [2024-06-28 01:42:57,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251643611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:57,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:57,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:57,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172986150] [2024-06-28 01:42:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:57,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:57,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:57,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:58,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:58,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 299 transitions, 4914 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:58,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:58,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:58,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:58,739 INFO L124 PetriNetUnfolderBase]: 1587/2859 cut-off events. [2024-06-28 01:42:58,740 INFO L125 PetriNetUnfolderBase]: For 82798/82798 co-relation queries the response was YES. [2024-06-28 01:42:58,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20206 conditions, 2859 events. 1587/2859 cut-off events. For 82798/82798 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17983 event pairs, 460 based on Foata normal form. 2/2720 useless extension candidates. Maximal degree in co-relation 20084. Up to 2433 conditions per place. [2024-06-28 01:42:58,772 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 231 selfloop transitions, 87 changer transitions 0/325 dead transitions. [2024-06-28 01:42:58,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 325 transitions, 5792 flow [2024-06-28 01:42:58,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:42:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:42:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:42:58,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:42:58,773 INFO L175 Difference]: Start difference. First operand has 256 places, 299 transitions, 4914 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:42:58,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 325 transitions, 5792 flow [2024-06-28 01:42:59,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 325 transitions, 5534 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-28 01:42:59,117 INFO L231 Difference]: Finished difference. Result has 258 places, 301 transitions, 4954 flow [2024-06-28 01:42:59,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4954, PETRI_PLACES=258, PETRI_TRANSITIONS=301} [2024-06-28 01:42:59,117 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 219 predicate places. [2024-06-28 01:42:59,117 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 301 transitions, 4954 flow [2024-06-28 01:42:59,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:59,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:59,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:42:59,118 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:42:59,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:59,118 INFO L85 PathProgramCache]: Analyzing trace with hash 345394014, now seen corresponding path program 9 times [2024-06-28 01:42:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:59,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394648810] [2024-06-28 01:42:59,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:59,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:59,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394648810] [2024-06-28 01:42:59,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394648810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:59,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:59,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:42:59,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659539460] [2024-06-28 01:42:59,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:59,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:42:59,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:59,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:42:59,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:42:59,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:42:59,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 301 transitions, 4954 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:59,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:42:59,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:00,524 INFO L124 PetriNetUnfolderBase]: 1603/2887 cut-off events. [2024-06-28 01:43:00,525 INFO L125 PetriNetUnfolderBase]: For 82582/82582 co-relation queries the response was YES. [2024-06-28 01:43:00,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20264 conditions, 2887 events. 1603/2887 cut-off events. For 82582/82582 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18184 event pairs, 464 based on Foata normal form. 2/2753 useless extension candidates. Maximal degree in co-relation 20141. Up to 2259 conditions per place. [2024-06-28 01:43:00,555 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 235 selfloop transitions, 91 changer transitions 0/333 dead transitions. [2024-06-28 01:43:00,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 333 transitions, 5912 flow [2024-06-28 01:43:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:00,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:43:00,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2024-06-28 01:43:00,556 INFO L175 Difference]: Start difference. First operand has 258 places, 301 transitions, 4954 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:43:00,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 333 transitions, 5912 flow [2024-06-28 01:43:00,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 333 transitions, 5634 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:00,944 INFO L231 Difference]: Finished difference. Result has 260 places, 303 transitions, 4985 flow [2024-06-28 01:43:00,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4676, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4985, PETRI_PLACES=260, PETRI_TRANSITIONS=303} [2024-06-28 01:43:00,945 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 221 predicate places. [2024-06-28 01:43:00,945 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 303 transitions, 4985 flow [2024-06-28 01:43:00,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:00,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:00,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:43:00,945 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:00,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:00,946 INFO L85 PathProgramCache]: Analyzing trace with hash 849979372, now seen corresponding path program 10 times [2024-06-28 01:43:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:00,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549938357] [2024-06-28 01:43:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:00,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:01,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:01,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:01,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549938357] [2024-06-28 01:43:01,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549938357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:01,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:01,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:01,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793501772] [2024-06-28 01:43:01,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:01,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:01,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:01,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:01,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:01,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:01,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 303 transitions, 4985 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:01,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:01,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:02,335 INFO L124 PetriNetUnfolderBase]: 1619/2917 cut-off events. [2024-06-28 01:43:02,335 INFO L125 PetriNetUnfolderBase]: For 85701/85701 co-relation queries the response was YES. [2024-06-28 01:43:02,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20491 conditions, 2917 events. 1619/2917 cut-off events. For 85701/85701 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 18453 event pairs, 440 based on Foata normal form. 2/2780 useless extension candidates. Maximal degree in co-relation 20367. Up to 2356 conditions per place. [2024-06-28 01:43:02,365 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 251 selfloop transitions, 73 changer transitions 0/331 dead transitions. [2024-06-28 01:43:02,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 331 transitions, 5893 flow [2024-06-28 01:43:02,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:02,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:43:02,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-06-28 01:43:02,367 INFO L175 Difference]: Start difference. First operand has 260 places, 303 transitions, 4985 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:43:02,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 331 transitions, 5893 flow [2024-06-28 01:43:02,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 331 transitions, 5600 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:02,764 INFO L231 Difference]: Finished difference. Result has 261 places, 305 transitions, 4987 flow [2024-06-28 01:43:02,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4692, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4987, PETRI_PLACES=261, PETRI_TRANSITIONS=305} [2024-06-28 01:43:02,765 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 222 predicate places. [2024-06-28 01:43:02,765 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 305 transitions, 4987 flow [2024-06-28 01:43:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:02,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:02,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:43:02,766 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:02,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1458767062, now seen corresponding path program 11 times [2024-06-28 01:43:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796251974] [2024-06-28 01:43:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:03,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:03,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:03,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796251974] [2024-06-28 01:43:03,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796251974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:03,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:03,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:03,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191020030] [2024-06-28 01:43:03,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:03,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:03,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:03,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:03,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:03,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:03,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 305 transitions, 4987 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:03,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:03,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:04,088 INFO L124 PetriNetUnfolderBase]: 1654/2985 cut-off events. [2024-06-28 01:43:04,089 INFO L125 PetriNetUnfolderBase]: For 98035/98035 co-relation queries the response was YES. [2024-06-28 01:43:04,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21439 conditions, 2985 events. 1654/2985 cut-off events. For 98035/98035 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19080 event pairs, 512 based on Foata normal form. 2/2847 useless extension candidates. Maximal degree in co-relation 21314. Up to 2375 conditions per place. [2024-06-28 01:43:04,119 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 233 selfloop transitions, 95 changer transitions 0/335 dead transitions. [2024-06-28 01:43:04,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 335 transitions, 6157 flow [2024-06-28 01:43:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:04,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:04,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:43:04,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:43:04,120 INFO L175 Difference]: Start difference. First operand has 261 places, 305 transitions, 4987 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:43:04,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 335 transitions, 6157 flow [2024-06-28 01:43:04,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 335 transitions, 5926 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:04,596 INFO L231 Difference]: Finished difference. Result has 263 places, 309 transitions, 5216 flow [2024-06-28 01:43:04,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5216, PETRI_PLACES=263, PETRI_TRANSITIONS=309} [2024-06-28 01:43:04,597 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 224 predicate places. [2024-06-28 01:43:04,597 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 309 transitions, 5216 flow [2024-06-28 01:43:04,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:04,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:04,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:43:04,598 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1458762412, now seen corresponding path program 12 times [2024-06-28 01:43:04,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:04,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572654425] [2024-06-28 01:43:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:05,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:05,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:05,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572654425] [2024-06-28 01:43:05,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572654425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:05,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:05,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:05,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519173954] [2024-06-28 01:43:05,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:05,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:05,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:05,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:05,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:05,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:05,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 309 transitions, 5216 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:05,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:05,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:05,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:06,085 INFO L124 PetriNetUnfolderBase]: 1651/2981 cut-off events. [2024-06-28 01:43:06,086 INFO L125 PetriNetUnfolderBase]: For 91573/91573 co-relation queries the response was YES. [2024-06-28 01:43:06,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21124 conditions, 2981 events. 1651/2981 cut-off events. For 91573/91573 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19074 event pairs, 543 based on Foata normal form. 2/2848 useless extension candidates. Maximal degree in co-relation 20998. Up to 2553 conditions per place. [2024-06-28 01:43:06,118 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 234 selfloop transitions, 91 changer transitions 0/332 dead transitions. [2024-06-28 01:43:06,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 332 transitions, 5988 flow [2024-06-28 01:43:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:06,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 01:43:06,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 01:43:06,120 INFO L175 Difference]: Start difference. First operand has 263 places, 309 transitions, 5216 flow. Second operand 9 states and 135 transitions. [2024-06-28 01:43:06,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 332 transitions, 5988 flow [2024-06-28 01:43:06,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 332 transitions, 5672 flow, removed 112 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:06,654 INFO L231 Difference]: Finished difference. Result has 266 places, 309 transitions, 5108 flow [2024-06-28 01:43:06,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4900, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5108, PETRI_PLACES=266, PETRI_TRANSITIONS=309} [2024-06-28 01:43:06,654 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2024-06-28 01:43:06,655 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 309 transitions, 5108 flow [2024-06-28 01:43:06,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:06,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:06,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:43:06,655 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:06,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1454113838, now seen corresponding path program 5 times [2024-06-28 01:43:06,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:06,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760518896] [2024-06-28 01:43:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:06,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:07,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:07,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:07,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760518896] [2024-06-28 01:43:07,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760518896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:07,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:07,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:07,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90131178] [2024-06-28 01:43:07,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:07,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:07,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:07,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:07,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:07,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:07,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 309 transitions, 5108 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 01:43:07,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:07,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:07,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:08,071 INFO L124 PetriNetUnfolderBase]: 1719/3105 cut-off events. [2024-06-28 01:43:08,071 INFO L125 PetriNetUnfolderBase]: For 101285/101285 co-relation queries the response was YES. [2024-06-28 01:43:08,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21583 conditions, 3105 events. 1719/3105 cut-off events. For 101285/101285 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19954 event pairs, 508 based on Foata normal form. 10/2979 useless extension candidates. Maximal degree in co-relation 21456. Up to 2156 conditions per place. [2024-06-28 01:43:08,112 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 208 selfloop transitions, 121 changer transitions 0/336 dead transitions. [2024-06-28 01:43:08,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 336 transitions, 6002 flow [2024-06-28 01:43:08,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:43:08,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 01:43:08,113 INFO L175 Difference]: Start difference. First operand has 266 places, 309 transitions, 5108 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:43:08,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 336 transitions, 6002 flow [2024-06-28 01:43:08,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 336 transitions, 5782 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:08,626 INFO L231 Difference]: Finished difference. Result has 266 places, 310 transitions, 5222 flow [2024-06-28 01:43:08,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5222, PETRI_PLACES=266, PETRI_TRANSITIONS=310} [2024-06-28 01:43:08,627 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 227 predicate places. [2024-06-28 01:43:08,627 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 310 transitions, 5222 flow [2024-06-28 01:43:08,627 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 01:43:08,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:08,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:43:08,628 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:08,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1020801772, now seen corresponding path program 13 times [2024-06-28 01:43:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:08,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028033420] [2024-06-28 01:43:08,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:08,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:09,219 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 01:43:09,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:09,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028033420] [2024-06-28 01:43:09,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028033420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:09,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:09,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:09,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402224029] [2024-06-28 01:43:09,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:09,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:09,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:09,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:09,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:09,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 310 transitions, 5222 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:10,202 INFO L124 PetriNetUnfolderBase]: 1735/3132 cut-off events. [2024-06-28 01:43:10,202 INFO L125 PetriNetUnfolderBase]: For 93813/93813 co-relation queries the response was YES. [2024-06-28 01:43:10,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22196 conditions, 3132 events. 1735/3132 cut-off events. For 93813/93813 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20209 event pairs, 517 based on Foata normal form. 2/2989 useless extension candidates. Maximal degree in co-relation 22069. Up to 2564 conditions per place. [2024-06-28 01:43:10,241 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 226 selfloop transitions, 101 changer transitions 0/334 dead transitions. [2024-06-28 01:43:10,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 334 transitions, 6130 flow [2024-06-28 01:43:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:10,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 01:43:10,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-28 01:43:10,243 INFO L175 Difference]: Start difference. First operand has 266 places, 310 transitions, 5222 flow. Second operand 9 states and 139 transitions. [2024-06-28 01:43:10,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 334 transitions, 6130 flow [2024-06-28 01:43:10,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 334 transitions, 5872 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:10,773 INFO L231 Difference]: Finished difference. Result has 268 places, 312 transitions, 5311 flow [2024-06-28 01:43:10,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4964, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5311, PETRI_PLACES=268, PETRI_TRANSITIONS=312} [2024-06-28 01:43:10,773 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 229 predicate places. [2024-06-28 01:43:10,774 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 312 transitions, 5311 flow [2024-06-28 01:43:10,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:10,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:10,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:43:10,774 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:10,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1288064632, now seen corresponding path program 14 times [2024-06-28 01:43:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:10,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634051513] [2024-06-28 01:43:10,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:10,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:11,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:11,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:11,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634051513] [2024-06-28 01:43:11,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634051513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:11,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:11,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:11,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773645381] [2024-06-28 01:43:11,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:11,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:11,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:11,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:11,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:11,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:11,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 312 transitions, 5311 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:11,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:11,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:12,322 INFO L124 PetriNetUnfolderBase]: 1851/3347 cut-off events. [2024-06-28 01:43:12,322 INFO L125 PetriNetUnfolderBase]: For 137021/137021 co-relation queries the response was YES. [2024-06-28 01:43:12,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24995 conditions, 3347 events. 1851/3347 cut-off events. For 137021/137021 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 21980 event pairs, 564 based on Foata normal form. 2/3211 useless extension candidates. Maximal degree in co-relation 24867. Up to 2356 conditions per place. [2024-06-28 01:43:12,361 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 228 selfloop transitions, 110 changer transitions 0/345 dead transitions. [2024-06-28 01:43:12,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 345 transitions, 6571 flow [2024-06-28 01:43:12,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:12,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:12,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:43:12,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:43:12,362 INFO L175 Difference]: Start difference. First operand has 268 places, 312 transitions, 5311 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:43:12,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 345 transitions, 6571 flow [2024-06-28 01:43:12,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 345 transitions, 6252 flow, removed 62 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:12,836 INFO L231 Difference]: Finished difference. Result has 270 places, 316 transitions, 5496 flow [2024-06-28 01:43:12,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5496, PETRI_PLACES=270, PETRI_TRANSITIONS=316} [2024-06-28 01:43:12,837 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 231 predicate places. [2024-06-28 01:43:12,837 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 316 transitions, 5496 flow [2024-06-28 01:43:12,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:12,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:12,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:43:12,837 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:12,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash -371439724, now seen corresponding path program 15 times [2024-06-28 01:43:12,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:12,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429125686] [2024-06-28 01:43:12,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:12,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:13,360 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 01:43:13,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:13,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429125686] [2024-06-28 01:43:13,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429125686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:13,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:13,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:13,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584505257] [2024-06-28 01:43:13,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:13,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:13,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:13,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:13,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:13,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:13,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 316 transitions, 5496 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 01:43:13,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:13,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:13,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:14,157 INFO L124 PetriNetUnfolderBase]: 1835/3319 cut-off events. [2024-06-28 01:43:14,157 INFO L125 PetriNetUnfolderBase]: For 130216/130216 co-relation queries the response was YES. [2024-06-28 01:43:14,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23836 conditions, 3319 events. 1835/3319 cut-off events. For 130216/130216 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21760 event pairs, 551 based on Foata normal form. 12/3189 useless extension candidates. Maximal degree in co-relation 23707. Up to 2482 conditions per place. [2024-06-28 01:43:14,192 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 225 selfloop transitions, 110 changer transitions 0/342 dead transitions. [2024-06-28 01:43:14,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 342 transitions, 6334 flow [2024-06-28 01:43:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:14,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:14,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:43:14,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-28 01:43:14,193 INFO L175 Difference]: Start difference. First operand has 270 places, 316 transitions, 5496 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:43:14,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 342 transitions, 6334 flow [2024-06-28 01:43:14,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 342 transitions, 5981 flow, removed 113 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:14,758 INFO L231 Difference]: Finished difference. Result has 274 places, 316 transitions, 5378 flow [2024-06-28 01:43:14,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5143, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5378, PETRI_PLACES=274, PETRI_TRANSITIONS=316} [2024-06-28 01:43:14,759 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-06-28 01:43:14,759 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 316 transitions, 5378 flow [2024-06-28 01:43:14,759 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 01:43:14,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:14,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:14,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:43:14,759 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:14,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:14,759 INFO L85 PathProgramCache]: Analyzing trace with hash -371193770, now seen corresponding path program 6 times [2024-06-28 01:43:14,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:14,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358198450] [2024-06-28 01:43:14,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:14,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:15,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:15,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:15,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358198450] [2024-06-28 01:43:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358198450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:15,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287414306] [2024-06-28 01:43:15,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:15,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:15,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:15,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:15,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:15,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:15,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 316 transitions, 5378 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 01:43:15,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:15,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:15,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:16,048 INFO L124 PetriNetUnfolderBase]: 1930/3504 cut-off events. [2024-06-28 01:43:16,049 INFO L125 PetriNetUnfolderBase]: For 125740/125740 co-relation queries the response was YES. [2024-06-28 01:43:16,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24836 conditions, 3504 events. 1930/3504 cut-off events. For 125740/125740 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 23237 event pairs, 545 based on Foata normal form. 8/3389 useless extension candidates. Maximal degree in co-relation 24705. Up to 1603 conditions per place. [2024-06-28 01:43:16,086 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 225 selfloop transitions, 118 changer transitions 0/350 dead transitions. [2024-06-28 01:43:16,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 350 transitions, 6558 flow [2024-06-28 01:43:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:16,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:43:16,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:43:16,087 INFO L175 Difference]: Start difference. First operand has 274 places, 316 transitions, 5378 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:43:16,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 350 transitions, 6558 flow [2024-06-28 01:43:16,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 350 transitions, 6316 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:16,579 INFO L231 Difference]: Finished difference. Result has 275 places, 318 transitions, 5528 flow [2024-06-28 01:43:16,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5136, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5528, PETRI_PLACES=275, PETRI_TRANSITIONS=318} [2024-06-28 01:43:16,580 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 236 predicate places. [2024-06-28 01:43:16,580 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 318 transitions, 5528 flow [2024-06-28 01:43:16,580 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 01:43:16,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:16,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:43:16,580 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:16,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,581 INFO L85 PathProgramCache]: Analyzing trace with hash 643830958, now seen corresponding path program 7 times [2024-06-28 01:43:16,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890411700] [2024-06-28 01:43:16,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:17,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890411700] [2024-06-28 01:43:17,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890411700] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:17,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:17,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:17,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997174555] [2024-06-28 01:43:17,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:17,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:17,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:17,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:17,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:17,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 318 transitions, 5528 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 01:43:17,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:17,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:17,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:18,036 INFO L124 PetriNetUnfolderBase]: 2082/3801 cut-off events. [2024-06-28 01:43:18,037 INFO L125 PetriNetUnfolderBase]: For 176371/176371 co-relation queries the response was YES. [2024-06-28 01:43:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28047 conditions, 3801 events. 2082/3801 cut-off events. For 176371/176371 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 25962 event pairs, 951 based on Foata normal form. 8/3661 useless extension candidates. Maximal degree in co-relation 27915. Up to 3236 conditions per place. [2024-06-28 01:43:18,078 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 320 selfloop transitions, 23 changer transitions 0/350 dead transitions. [2024-06-28 01:43:18,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 350 transitions, 6762 flow [2024-06-28 01:43:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:43:18,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 01:43:18,079 INFO L175 Difference]: Start difference. First operand has 275 places, 318 transitions, 5528 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:43:18,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 350 transitions, 6762 flow [2024-06-28 01:43:18,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 350 transitions, 6559 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:18,733 INFO L231 Difference]: Finished difference. Result has 278 places, 320 transitions, 5532 flow [2024-06-28 01:43:18,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5331, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5532, PETRI_PLACES=278, PETRI_TRANSITIONS=320} [2024-06-28 01:43:18,733 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 239 predicate places. [2024-06-28 01:43:18,733 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 320 transitions, 5532 flow [2024-06-28 01:43:18,733 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 01:43:18,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:18,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:18,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:43:18,734 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:18,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1510225500, now seen corresponding path program 8 times [2024-06-28 01:43:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:18,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768992778] [2024-06-28 01:43:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,250 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 01:43:19,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768992778] [2024-06-28 01:43:19,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768992778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:19,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041309981] [2024-06-28 01:43:19,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:19,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:19,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:19,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 320 transitions, 5532 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 01:43:19,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:19,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:19,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:20,350 INFO L124 PetriNetUnfolderBase]: 2147/3928 cut-off events. [2024-06-28 01:43:20,351 INFO L125 PetriNetUnfolderBase]: For 182122/182122 co-relation queries the response was YES. [2024-06-28 01:43:20,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28585 conditions, 3928 events. 2147/3928 cut-off events. For 182122/182122 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 27127 event pairs, 1019 based on Foata normal form. 12/3785 useless extension candidates. Maximal degree in co-relation 28452. Up to 3563 conditions per place. [2024-06-28 01:43:20,402 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 315 selfloop transitions, 23 changer transitions 0/345 dead transitions. [2024-06-28 01:43:20,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 345 transitions, 6500 flow [2024-06-28 01:43:20,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:20,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:20,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 01:43:20,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43174603174603177 [2024-06-28 01:43:20,404 INFO L175 Difference]: Start difference. First operand has 278 places, 320 transitions, 5532 flow. Second operand 9 states and 136 transitions. [2024-06-28 01:43:20,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 345 transitions, 6500 flow [2024-06-28 01:43:21,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 345 transitions, 6414 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:21,182 INFO L231 Difference]: Finished difference. Result has 282 places, 322 transitions, 5639 flow [2024-06-28 01:43:21,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5450, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5639, PETRI_PLACES=282, PETRI_TRANSITIONS=322} [2024-06-28 01:43:21,182 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 243 predicate places. [2024-06-28 01:43:21,183 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 322 transitions, 5639 flow [2024-06-28 01:43:21,183 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 01:43:21,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:21,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:21,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:43:21,183 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:21,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1157144172, now seen corresponding path program 16 times [2024-06-28 01:43:21,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:21,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19193506] [2024-06-28 01:43:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:21,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:21,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:21,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19193506] [2024-06-28 01:43:21,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19193506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:21,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:21,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:21,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57786344] [2024-06-28 01:43:21,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:21,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:21,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:21,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:21,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:21,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:21,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 322 transitions, 5639 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:21,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:21,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:21,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:22,985 INFO L124 PetriNetUnfolderBase]: 2231/4081 cut-off events. [2024-06-28 01:43:22,985 INFO L125 PetriNetUnfolderBase]: For 194184/194184 co-relation queries the response was YES. [2024-06-28 01:43:23,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29962 conditions, 4081 events. 2231/4081 cut-off events. For 194184/194184 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 28410 event pairs, 767 based on Foata normal form. 12/3933 useless extension candidates. Maximal degree in co-relation 29827. Up to 3243 conditions per place. [2024-06-28 01:43:23,050 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 239 selfloop transitions, 103 changer transitions 0/349 dead transitions. [2024-06-28 01:43:23,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 349 transitions, 6629 flow [2024-06-28 01:43:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:43:23,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-28 01:43:23,051 INFO L175 Difference]: Start difference. First operand has 282 places, 322 transitions, 5639 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:43:23,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 349 transitions, 6629 flow [2024-06-28 01:43:24,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 349 transitions, 6490 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:24,012 INFO L231 Difference]: Finished difference. Result has 284 places, 324 transitions, 5855 flow [2024-06-28 01:43:24,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5500, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5855, PETRI_PLACES=284, PETRI_TRANSITIONS=324} [2024-06-28 01:43:24,013 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 245 predicate places. [2024-06-28 01:43:24,013 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 324 transitions, 5855 flow [2024-06-28 01:43:24,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:24,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:24,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:43:24,014 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:24,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash 996910860, now seen corresponding path program 9 times [2024-06-28 01:43:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:24,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707220535] [2024-06-28 01:43:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:24,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:24,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707220535] [2024-06-28 01:43:24,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707220535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:24,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:24,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:24,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415279902] [2024-06-28 01:43:24,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:24,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:24,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:24,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:24,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:24,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:24,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 324 transitions, 5855 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:24,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:24,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:24,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:25,910 INFO L124 PetriNetUnfolderBase]: 2312/4229 cut-off events. [2024-06-28 01:43:25,910 INFO L125 PetriNetUnfolderBase]: For 192120/192120 co-relation queries the response was YES. [2024-06-28 01:43:25,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30882 conditions, 4229 events. 2312/4229 cut-off events. For 192120/192120 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 29640 event pairs, 852 based on Foata normal form. 10/4075 useless extension candidates. Maximal degree in co-relation 30746. Up to 3572 conditions per place. [2024-06-28 01:43:25,972 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 251 selfloop transitions, 98 changer transitions 0/356 dead transitions. [2024-06-28 01:43:25,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 356 transitions, 6922 flow [2024-06-28 01:43:25,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:43:25,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44571428571428573 [2024-06-28 01:43:25,974 INFO L175 Difference]: Start difference. First operand has 284 places, 324 transitions, 5855 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:43:25,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 356 transitions, 6922 flow [2024-06-28 01:43:26,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 356 transitions, 6552 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:26,779 INFO L231 Difference]: Finished difference. Result has 288 places, 328 transitions, 5883 flow [2024-06-28 01:43:26,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5542, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5883, PETRI_PLACES=288, PETRI_TRANSITIONS=328} [2024-06-28 01:43:26,779 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 249 predicate places. [2024-06-28 01:43:26,779 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 328 transitions, 5883 flow [2024-06-28 01:43:26,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:26,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:26,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:43:26,780 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:26,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:26,780 INFO L85 PathProgramCache]: Analyzing trace with hash -736886576, now seen corresponding path program 10 times [2024-06-28 01:43:26,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:26,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896308384] [2024-06-28 01:43:26,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:26,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896308384] [2024-06-28 01:43:27,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896308384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:27,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:27,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:27,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199849123] [2024-06-28 01:43:27,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:27,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:27,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:27,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:27,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:27,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 328 transitions, 5883 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 01:43:27,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:27,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:27,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:28,485 INFO L124 PetriNetUnfolderBase]: 2342/4299 cut-off events. [2024-06-28 01:43:28,485 INFO L125 PetriNetUnfolderBase]: For 176057/176057 co-relation queries the response was YES. [2024-06-28 01:43:28,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30459 conditions, 4299 events. 2342/4299 cut-off events. For 176057/176057 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30440 event pairs, 1126 based on Foata normal form. 10/4146 useless extension candidates. Maximal degree in co-relation 30321. Up to 3951 conditions per place. [2024-06-28 01:43:28,541 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 325 selfloop transitions, 20 changer transitions 0/352 dead transitions. [2024-06-28 01:43:28,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 352 transitions, 6797 flow [2024-06-28 01:43:28,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:28,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:28,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 01:43:28,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085714285714286 [2024-06-28 01:43:28,543 INFO L175 Difference]: Start difference. First operand has 288 places, 328 transitions, 5883 flow. Second operand 10 states and 143 transitions. [2024-06-28 01:43:28,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 352 transitions, 6797 flow [2024-06-28 01:43:29,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 352 transitions, 6552 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:29,444 INFO L231 Difference]: Finished difference. Result has 291 places, 329 transitions, 5756 flow [2024-06-28 01:43:29,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5638, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5756, PETRI_PLACES=291, PETRI_TRANSITIONS=329} [2024-06-28 01:43:29,444 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 252 predicate places. [2024-06-28 01:43:29,444 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 329 transitions, 5756 flow [2024-06-28 01:43:29,445 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 01:43:29,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:29,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:29,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:43:29,445 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:29,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:29,445 INFO L85 PathProgramCache]: Analyzing trace with hash 653950288, now seen corresponding path program 11 times [2024-06-28 01:43:29,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:29,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268313877] [2024-06-28 01:43:29,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:29,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:29,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268313877] [2024-06-28 01:43:29,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268313877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:29,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:29,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:29,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686442605] [2024-06-28 01:43:29,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:29,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:29,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:29,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:29,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:29,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:29,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 329 transitions, 5756 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 01:43:29,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:29,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:29,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:31,075 INFO L124 PetriNetUnfolderBase]: 2394/4399 cut-off events. [2024-06-28 01:43:31,075 INFO L125 PetriNetUnfolderBase]: For 172879/172879 co-relation queries the response was YES. [2024-06-28 01:43:31,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30763 conditions, 4399 events. 2394/4399 cut-off events. For 172879/172879 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 31297 event pairs, 1113 based on Foata normal form. 8/4260 useless extension candidates. Maximal degree in co-relation 30624. Up to 3507 conditions per place. [2024-06-28 01:43:31,128 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 329 selfloop transitions, 28 changer transitions 0/364 dead transitions. [2024-06-28 01:43:31,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 364 transitions, 6926 flow [2024-06-28 01:43:31,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:31,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:43:31,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-28 01:43:31,129 INFO L175 Difference]: Start difference. First operand has 291 places, 329 transitions, 5756 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:43:31,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 364 transitions, 6926 flow [2024-06-28 01:43:31,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 364 transitions, 6852 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:31,934 INFO L231 Difference]: Finished difference. Result has 293 places, 330 transitions, 5824 flow [2024-06-28 01:43:31,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5682, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5824, PETRI_PLACES=293, PETRI_TRANSITIONS=330} [2024-06-28 01:43:31,935 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 254 predicate places. [2024-06-28 01:43:31,935 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 330 transitions, 5824 flow [2024-06-28 01:43:31,935 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 01:43:31,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:31,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:43:31,936 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:31,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1156898218, now seen corresponding path program 12 times [2024-06-28 01:43:31,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964482668] [2024-06-28 01:43:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964482668] [2024-06-28 01:43:32,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964482668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:32,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:32,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320500838] [2024-06-28 01:43:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:32,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:32,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:32,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:32,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:32,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:32,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 330 transitions, 5824 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 01:43:32,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:32,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:32,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,600 INFO L124 PetriNetUnfolderBase]: 2508/4610 cut-off events. [2024-06-28 01:43:33,601 INFO L125 PetriNetUnfolderBase]: For 210715/210716 co-relation queries the response was YES. [2024-06-28 01:43:33,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33180 conditions, 4610 events. 2508/4610 cut-off events. For 210715/210716 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 33068 event pairs, 910 based on Foata normal form. 8/4459 useless extension candidates. Maximal degree in co-relation 33040. Up to 3311 conditions per place. [2024-06-28 01:43:33,656 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 247 selfloop transitions, 111 changer transitions 0/365 dead transitions. [2024-06-28 01:43:33,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 365 transitions, 7133 flow [2024-06-28 01:43:33,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:33,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:43:33,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-28 01:43:33,657 INFO L175 Difference]: Start difference. First operand has 293 places, 330 transitions, 5824 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:43:33,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 365 transitions, 7133 flow [2024-06-28 01:43:34,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 365 transitions, 7017 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:34,573 INFO L231 Difference]: Finished difference. Result has 295 places, 332 transitions, 6100 flow [2024-06-28 01:43:34,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5708, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6100, PETRI_PLACES=295, PETRI_TRANSITIONS=332} [2024-06-28 01:43:34,574 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 256 predicate places. [2024-06-28 01:43:34,574 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 332 transitions, 6100 flow [2024-06-28 01:43:34,574 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 01:43:34,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:34,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:34,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:43:34,574 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:34,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1163573262, now seen corresponding path program 17 times [2024-06-28 01:43:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:34,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306695046] [2024-06-28 01:43:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:34,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:35,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306695046] [2024-06-28 01:43:35,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306695046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:35,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:35,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489594114] [2024-06-28 01:43:35,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:35,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:35,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:35,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:35,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:35,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:35,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 332 transitions, 6100 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:35,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:35,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:35,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:36,280 INFO L124 PetriNetUnfolderBase]: 2505/4607 cut-off events. [2024-06-28 01:43:36,281 INFO L125 PetriNetUnfolderBase]: For 190925/190925 co-relation queries the response was YES. [2024-06-28 01:43:36,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33067 conditions, 4607 events. 2505/4607 cut-off events. For 190925/190925 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 33193 event pairs, 935 based on Foata normal form. 2/4439 useless extension candidates. Maximal degree in co-relation 32926. Up to 3888 conditions per place. [2024-06-28 01:43:36,336 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 238 selfloop transitions, 110 changer transitions 0/355 dead transitions. [2024-06-28 01:43:36,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 355 transitions, 7066 flow [2024-06-28 01:43:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:36,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:36,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:43:36,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-28 01:43:36,337 INFO L175 Difference]: Start difference. First operand has 295 places, 332 transitions, 6100 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:43:36,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 355 transitions, 7066 flow [2024-06-28 01:43:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 355 transitions, 6856 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:37,309 INFO L231 Difference]: Finished difference. Result has 298 places, 334 transitions, 6267 flow [2024-06-28 01:43:37,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5898, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6267, PETRI_PLACES=298, PETRI_TRANSITIONS=334} [2024-06-28 01:43:37,310 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 259 predicate places. [2024-06-28 01:43:37,310 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 334 transitions, 6267 flow [2024-06-28 01:43:37,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:37,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:43:37,311 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:37,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:37,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1163577912, now seen corresponding path program 18 times [2024-06-28 01:43:37,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:37,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961339842] [2024-06-28 01:43:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:37,878 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 01:43:37,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:37,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961339842] [2024-06-28 01:43:37,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961339842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:37,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:37,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:37,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109043218] [2024-06-28 01:43:37,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:37,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:37,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:37,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:37,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:37,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 334 transitions, 6267 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:37,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:37,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:38,989 INFO L124 PetriNetUnfolderBase]: 2505/4606 cut-off events. [2024-06-28 01:43:38,989 INFO L125 PetriNetUnfolderBase]: For 184099/184099 co-relation queries the response was YES. [2024-06-28 01:43:39,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33123 conditions, 4606 events. 2505/4606 cut-off events. For 184099/184099 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 33082 event pairs, 922 based on Foata normal form. 2/4448 useless extension candidates. Maximal degree in co-relation 32980. Up to 3548 conditions per place. [2024-06-28 01:43:39,049 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 238 selfloop transitions, 118 changer transitions 0/363 dead transitions. [2024-06-28 01:43:39,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 363 transitions, 7311 flow [2024-06-28 01:43:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:43:39,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473015873015873 [2024-06-28 01:43:39,050 INFO L175 Difference]: Start difference. First operand has 298 places, 334 transitions, 6267 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:43:39,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 363 transitions, 7311 flow [2024-06-28 01:43:40,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 363 transitions, 6960 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:40,265 INFO L231 Difference]: Finished difference. Result has 300 places, 336 transitions, 6311 flow [2024-06-28 01:43:40,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6311, PETRI_PLACES=300, PETRI_TRANSITIONS=336} [2024-06-28 01:43:40,266 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 261 predicate places. [2024-06-28 01:43:40,266 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 336 transitions, 6311 flow [2024-06-28 01:43:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:40,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:40,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:40,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:43:40,266 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:40,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1163393338, now seen corresponding path program 13 times [2024-06-28 01:43:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214761969] [2024-06-28 01:43:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:40,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:40,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:40,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214761969] [2024-06-28 01:43:40,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214761969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:40,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:40,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:40,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730424029] [2024-06-28 01:43:40,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:40,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:40,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:40,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 336 transitions, 6311 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:40,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:40,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:40,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:42,191 INFO L124 PetriNetUnfolderBase]: 2535/4669 cut-off events. [2024-06-28 01:43:42,191 INFO L125 PetriNetUnfolderBase]: For 194618/194618 co-relation queries the response was YES. [2024-06-28 01:43:42,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32998 conditions, 4669 events. 2535/4669 cut-off events. For 194618/194618 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 33769 event pairs, 1009 based on Foata normal form. 10/4512 useless extension candidates. Maximal degree in co-relation 32854. Up to 4009 conditions per place. [2024-06-28 01:43:42,249 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 258 selfloop transitions, 99 changer transitions 0/364 dead transitions. [2024-06-28 01:43:42,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 364 transitions, 7283 flow [2024-06-28 01:43:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:42,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:42,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:43:42,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:43:42,250 INFO L175 Difference]: Start difference. First operand has 300 places, 336 transitions, 6311 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:43:42,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 364 transitions, 7283 flow [2024-06-28 01:43:43,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 364 transitions, 6892 flow, removed 79 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:43,544 INFO L231 Difference]: Finished difference. Result has 303 places, 337 transitions, 6206 flow [2024-06-28 01:43:43,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5926, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6206, PETRI_PLACES=303, PETRI_TRANSITIONS=337} [2024-06-28 01:43:43,544 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 264 predicate places. [2024-06-28 01:43:43,545 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 337 transitions, 6206 flow [2024-06-28 01:43:43,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:43,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:43,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:43:43,545 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:43,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:43,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1278539572, now seen corresponding path program 1 times [2024-06-28 01:43:43,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:43,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623641979] [2024-06-28 01:43:43,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:43,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:44,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:44,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623641979] [2024-06-28 01:43:44,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623641979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:44,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:44,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:44,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293799691] [2024-06-28 01:43:44,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:44,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:44,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:44,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:44,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:44,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:44,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 337 transitions, 6206 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:44,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:44,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:45,531 INFO L124 PetriNetUnfolderBase]: 2571/4742 cut-off events. [2024-06-28 01:43:45,531 INFO L125 PetriNetUnfolderBase]: For 181659/181659 co-relation queries the response was YES. [2024-06-28 01:43:45,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32962 conditions, 4742 events. 2571/4742 cut-off events. For 181659/181659 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 34603 event pairs, 1112 based on Foata normal form. 6/4579 useless extension candidates. Maximal degree in co-relation 32817. Up to 4297 conditions per place. [2024-06-28 01:43:45,587 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 310 selfloop transitions, 56 changer transitions 0/373 dead transitions. [2024-06-28 01:43:45,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 373 transitions, 7206 flow [2024-06-28 01:43:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:43:45,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43896103896103894 [2024-06-28 01:43:45,588 INFO L175 Difference]: Start difference. First operand has 303 places, 337 transitions, 6206 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:43:45,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 373 transitions, 7206 flow [2024-06-28 01:43:46,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 373 transitions, 6964 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:46,791 INFO L231 Difference]: Finished difference. Result has 306 places, 338 transitions, 6170 flow [2024-06-28 01:43:46,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5964, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6170, PETRI_PLACES=306, PETRI_TRANSITIONS=338} [2024-06-28 01:43:46,791 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 267 predicate places. [2024-06-28 01:43:46,791 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 338 transitions, 6170 flow [2024-06-28 01:43:46,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:46,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:43:46,792 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:46,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,792 INFO L85 PathProgramCache]: Analyzing trace with hash 557376274, now seen corresponding path program 2 times [2024-06-28 01:43:46,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788877370] [2024-06-28 01:43:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:47,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:47,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788877370] [2024-06-28 01:43:47,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788877370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484716108] [2024-06-28 01:43:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:47,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:47,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:47,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:47,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 338 transitions, 6170 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 01:43:47,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:47,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:47,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:48,528 INFO L124 PetriNetUnfolderBase]: 2636/4858 cut-off events. [2024-06-28 01:43:48,528 INFO L125 PetriNetUnfolderBase]: For 192156/192156 co-relation queries the response was YES. [2024-06-28 01:43:48,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33857 conditions, 4858 events. 2636/4858 cut-off events. For 192156/192156 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 35362 event pairs, 932 based on Foata normal form. 6/4696 useless extension candidates. Maximal degree in co-relation 33712. Up to 4317 conditions per place. [2024-06-28 01:43:48,586 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 315 selfloop transitions, 58 changer transitions 0/380 dead transitions. [2024-06-28 01:43:48,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 380 transitions, 7561 flow [2024-06-28 01:43:48,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:48,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:48,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:43:48,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44857142857142857 [2024-06-28 01:43:48,587 INFO L175 Difference]: Start difference. First operand has 306 places, 338 transitions, 6170 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:43:48,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 380 transitions, 7561 flow [2024-06-28 01:43:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 380 transitions, 7300 flow, removed 76 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:49,838 INFO L231 Difference]: Finished difference. Result has 309 places, 346 transitions, 6520 flow [2024-06-28 01:43:49,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5986, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6520, PETRI_PLACES=309, PETRI_TRANSITIONS=346} [2024-06-28 01:43:49,839 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 270 predicate places. [2024-06-28 01:43:49,839 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 346 transitions, 6520 flow [2024-06-28 01:43:49,839 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 01:43:49,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:49,839 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 01:43:49,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:43:49,839 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:49,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash -140261534, now seen corresponding path program 3 times [2024-06-28 01:43:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:49,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967131674] [2024-06-28 01:43:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:50,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967131674] [2024-06-28 01:43:50,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967131674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:50,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552236411] [2024-06-28 01:43:50,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:50,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:50,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:50,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:50,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 346 transitions, 6520 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:50,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:52,073 INFO L124 PetriNetUnfolderBase]: 2672/4938 cut-off events. [2024-06-28 01:43:52,073 INFO L125 PetriNetUnfolderBase]: For 193814/193814 co-relation queries the response was YES. [2024-06-28 01:43:52,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34164 conditions, 4938 events. 2672/4938 cut-off events. For 193814/193814 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 36428 event pairs, 1148 based on Foata normal form. 6/4778 useless extension candidates. Maximal degree in co-relation 34016. Up to 4163 conditions per place. [2024-06-28 01:43:52,143 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 268 selfloop transitions, 109 changer transitions 0/384 dead transitions. [2024-06-28 01:43:52,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 384 transitions, 7595 flow [2024-06-28 01:43:52,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:43:52,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:43:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 01:43:52,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-28 01:43:52,145 INFO L175 Difference]: Start difference. First operand has 309 places, 346 transitions, 6520 flow. Second operand 12 states and 183 transitions. [2024-06-28 01:43:52,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 384 transitions, 7595 flow [2024-06-28 01:43:53,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 384 transitions, 7231 flow, removed 158 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:53,523 INFO L231 Difference]: Finished difference. Result has 318 places, 348 transitions, 6556 flow [2024-06-28 01:43:53,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6156, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6556, PETRI_PLACES=318, PETRI_TRANSITIONS=348} [2024-06-28 01:43:53,524 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 279 predicate places. [2024-06-28 01:43:53,524 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 348 transitions, 6556 flow [2024-06-28 01:43:53,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:53,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:43:53,524 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:53,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 488124942, now seen corresponding path program 4 times [2024-06-28 01:43:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395148116] [2024-06-28 01:43:53,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395148116] [2024-06-28 01:43:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395148116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:54,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:54,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894689050] [2024-06-28 01:43:54,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:54,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:54,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:54,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:54,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:54,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 348 transitions, 6556 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:54,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:54,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:55,584 INFO L124 PetriNetUnfolderBase]: 2708/5009 cut-off events. [2024-06-28 01:43:55,584 INFO L125 PetriNetUnfolderBase]: For 191867/191867 co-relation queries the response was YES. [2024-06-28 01:43:55,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34747 conditions, 5009 events. 2708/5009 cut-off events. For 191867/191867 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 37121 event pairs, 1227 based on Foata normal form. 6/4852 useless extension candidates. Maximal degree in co-relation 34596. Up to 4575 conditions per place. [2024-06-28 01:43:55,653 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 304 selfloop transitions, 70 changer transitions 0/381 dead transitions. [2024-06-28 01:43:55,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 381 transitions, 7546 flow [2024-06-28 01:43:55,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:43:55,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 01:43:55,657 INFO L175 Difference]: Start difference. First operand has 318 places, 348 transitions, 6556 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:43:55,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 381 transitions, 7546 flow [2024-06-28 01:43:56,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 381 transitions, 7270 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:56,975 INFO L231 Difference]: Finished difference. Result has 320 places, 349 transitions, 6493 flow [2024-06-28 01:43:56,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6280, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6493, PETRI_PLACES=320, PETRI_TRANSITIONS=349} [2024-06-28 01:43:56,976 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 281 predicate places. [2024-06-28 01:43:56,976 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 349 transitions, 6493 flow [2024-06-28 01:43:56,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:56,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:56,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:43:56,976 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:56,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:56,977 INFO L85 PathProgramCache]: Analyzing trace with hash -641396288, now seen corresponding path program 5 times [2024-06-28 01:43:56,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:56,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78821180] [2024-06-28 01:43:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:56,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:57,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:57,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78821180] [2024-06-28 01:43:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78821180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:57,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:43:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513898651] [2024-06-28 01:43:57,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:57,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:43:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:57,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:43:57,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:43:57,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:43:57,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 349 transitions, 6493 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:57,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:43:57,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:59,011 INFO L124 PetriNetUnfolderBase]: 2787/5160 cut-off events. [2024-06-28 01:43:59,011 INFO L125 PetriNetUnfolderBase]: For 194828/194828 co-relation queries the response was YES. [2024-06-28 01:43:59,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35387 conditions, 5160 events. 2787/5160 cut-off events. For 194828/194828 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 38539 event pairs, 1159 based on Foata normal form. 6/4996 useless extension candidates. Maximal degree in co-relation 35235. Up to 4644 conditions per place. [2024-06-28 01:43:59,078 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 324 selfloop transitions, 56 changer transitions 0/387 dead transitions. [2024-06-28 01:43:59,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 387 transitions, 7564 flow [2024-06-28 01:43:59,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:43:59,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:43:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:43:59,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-28 01:43:59,080 INFO L175 Difference]: Start difference. First operand has 320 places, 349 transitions, 6493 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:43:59,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 387 transitions, 7564 flow [2024-06-28 01:44:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 387 transitions, 7397 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:00,567 INFO L231 Difference]: Finished difference. Result has 323 places, 352 transitions, 6573 flow [2024-06-28 01:44:00,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6326, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6573, PETRI_PLACES=323, PETRI_TRANSITIONS=352} [2024-06-28 01:44:00,568 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 284 predicate places. [2024-06-28 01:44:00,568 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 352 transitions, 6573 flow [2024-06-28 01:44:00,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:44:00,569 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:00,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 55876500, now seen corresponding path program 6 times [2024-06-28 01:44:00,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669023521] [2024-06-28 01:44:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:01,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:01,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:01,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669023521] [2024-06-28 01:44:01,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669023521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:01,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:01,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:01,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726038567] [2024-06-28 01:44:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:01,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:01,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:01,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:01,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:01,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:01,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 352 transitions, 6573 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 01:44:01,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:01,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:02,402 INFO L124 PetriNetUnfolderBase]: 2780/5148 cut-off events. [2024-06-28 01:44:02,402 INFO L125 PetriNetUnfolderBase]: For 177575/177575 co-relation queries the response was YES. [2024-06-28 01:44:02,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34824 conditions, 5148 events. 2780/5148 cut-off events. For 177575/177575 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 38365 event pairs, 1184 based on Foata normal form. 6/4991 useless extension candidates. Maximal degree in co-relation 34671. Up to 4459 conditions per place. [2024-06-28 01:44:02,471 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 269 selfloop transitions, 104 changer transitions 0/380 dead transitions. [2024-06-28 01:44:02,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 380 transitions, 7479 flow [2024-06-28 01:44:02,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:02,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:02,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:44:02,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-28 01:44:02,472 INFO L175 Difference]: Start difference. First operand has 323 places, 352 transitions, 6573 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:44:02,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 380 transitions, 7479 flow [2024-06-28 01:44:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 380 transitions, 7284 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:04,008 INFO L231 Difference]: Finished difference. Result has 325 places, 352 transitions, 6597 flow [2024-06-28 01:44:04,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6378, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6597, PETRI_PLACES=325, PETRI_TRANSITIONS=352} [2024-06-28 01:44:04,009 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 286 predicate places. [2024-06-28 01:44:04,009 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 352 transitions, 6597 flow [2024-06-28 01:44:04,009 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 01:44:04,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:04,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:04,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:44:04,010 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:04,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:04,010 INFO L85 PathProgramCache]: Analyzing trace with hash 260993238, now seen corresponding path program 7 times [2024-06-28 01:44:04,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:04,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035840920] [2024-06-28 01:44:04,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:04,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:04,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035840920] [2024-06-28 01:44:04,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035840920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:04,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509258214] [2024-06-28 01:44:04,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:04,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:04,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:04,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:04,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 352 transitions, 6597 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 01:44:04,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:04,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:05,922 INFO L124 PetriNetUnfolderBase]: 2816/5217 cut-off events. [2024-06-28 01:44:05,923 INFO L125 PetriNetUnfolderBase]: For 179871/179871 co-relation queries the response was YES. [2024-06-28 01:44:05,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35306 conditions, 5217 events. 2816/5217 cut-off events. For 179871/179871 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 38947 event pairs, 988 based on Foata normal form. 6/5055 useless extension candidates. Maximal degree in co-relation 35152. Up to 4174 conditions per place. [2024-06-28 01:44:05,991 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 298 selfloop transitions, 81 changer transitions 0/386 dead transitions. [2024-06-28 01:44:05,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 386 transitions, 7903 flow [2024-06-28 01:44:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:05,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:05,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:44:05,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2024-06-28 01:44:05,993 INFO L175 Difference]: Start difference. First operand has 325 places, 352 transitions, 6597 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:44:05,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 386 transitions, 7903 flow [2024-06-28 01:44:07,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 386 transitions, 7529 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:07,357 INFO L231 Difference]: Finished difference. Result has 326 places, 357 transitions, 6841 flow [2024-06-28 01:44:07,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6247, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6841, PETRI_PLACES=326, PETRI_TRANSITIONS=357} [2024-06-28 01:44:07,358 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 287 predicate places. [2024-06-28 01:44:07,358 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 357 transitions, 6841 flow [2024-06-28 01:44:07,358 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 01:44:07,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:07,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:07,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:44:07,359 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:07,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash 319979418, now seen corresponding path program 8 times [2024-06-28 01:44:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:07,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698959295] [2024-06-28 01:44:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:07,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:08,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:08,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:08,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698959295] [2024-06-28 01:44:08,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698959295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:08,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:08,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:08,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658241854] [2024-06-28 01:44:08,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:08,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:08,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:08,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:08,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:08,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:08,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 357 transitions, 6841 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:08,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:09,564 INFO L124 PetriNetUnfolderBase]: 2852/5291 cut-off events. [2024-06-28 01:44:09,564 INFO L125 PetriNetUnfolderBase]: For 175042/175042 co-relation queries the response was YES. [2024-06-28 01:44:09,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35762 conditions, 5291 events. 2852/5291 cut-off events. For 175042/175042 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 39787 event pairs, 1175 based on Foata normal form. 6/5128 useless extension candidates. Maximal degree in co-relation 35605. Up to 4207 conditions per place. [2024-06-28 01:44:09,624 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 254 selfloop transitions, 126 changer transitions 0/387 dead transitions. [2024-06-28 01:44:09,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 387 transitions, 7890 flow [2024-06-28 01:44:09,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:44:09,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-28 01:44:09,625 INFO L175 Difference]: Start difference. First operand has 326 places, 357 transitions, 6841 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:44:09,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 387 transitions, 7890 flow [2024-06-28 01:44:10,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 387 transitions, 7494 flow, removed 174 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:10,940 INFO L231 Difference]: Finished difference. Result has 332 places, 359 transitions, 6897 flow [2024-06-28 01:44:10,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6897, PETRI_PLACES=332, PETRI_TRANSITIONS=359} [2024-06-28 01:44:10,940 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 293 predicate places. [2024-06-28 01:44:10,941 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 359 transitions, 6897 flow [2024-06-28 01:44:10,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:10,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:10,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:44:10,941 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:10,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:10,942 INFO L85 PathProgramCache]: Analyzing trace with hash 320123568, now seen corresponding path program 9 times [2024-06-28 01:44:10,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:10,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55106052] [2024-06-28 01:44:10,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:10,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:11,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:11,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55106052] [2024-06-28 01:44:11,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55106052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:11,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:11,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:11,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154024207] [2024-06-28 01:44:11,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:11,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:11,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:11,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:11,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:11,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:11,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 359 transitions, 6897 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 01:44:11,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:11,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:11,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,926 INFO L124 PetriNetUnfolderBase]: 2845/5278 cut-off events. [2024-06-28 01:44:12,926 INFO L125 PetriNetUnfolderBase]: For 145066/145066 co-relation queries the response was YES. [2024-06-28 01:44:12,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35432 conditions, 5278 events. 2845/5278 cut-off events. For 145066/145066 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 39643 event pairs, 1201 based on Foata normal form. 6/5124 useless extension candidates. Maximal degree in co-relation 35272. Up to 4354 conditions per place. [2024-06-28 01:44:12,994 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 257 selfloop transitions, 121 changer transitions 0/385 dead transitions. [2024-06-28 01:44:12,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 385 transitions, 7807 flow [2024-06-28 01:44:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:12,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:12,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-28 01:44:12,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44126984126984126 [2024-06-28 01:44:12,995 INFO L175 Difference]: Start difference. First operand has 332 places, 359 transitions, 6897 flow. Second operand 9 states and 139 transitions. [2024-06-28 01:44:12,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 385 transitions, 7807 flow [2024-06-28 01:44:14,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 385 transitions, 7477 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:14,222 INFO L231 Difference]: Finished difference. Result has 333 places, 359 transitions, 6824 flow [2024-06-28 01:44:14,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6567, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6824, PETRI_PLACES=333, PETRI_TRANSITIONS=359} [2024-06-28 01:44:14,223 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 294 predicate places. [2024-06-28 01:44:14,223 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 359 transitions, 6824 flow [2024-06-28 01:44:14,223 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 01:44:14,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:14,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:14,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:44:14,223 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:14,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1368861646, now seen corresponding path program 10 times [2024-06-28 01:44:14,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:14,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765104766] [2024-06-28 01:44:14,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:14,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:14,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765104766] [2024-06-28 01:44:14,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765104766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:14,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346561844] [2024-06-28 01:44:14,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:14,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:14,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:14,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:14,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 359 transitions, 6824 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:14,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:16,392 INFO L124 PetriNetUnfolderBase]: 2838/5274 cut-off events. [2024-06-28 01:44:16,392 INFO L125 PetriNetUnfolderBase]: For 122290/122290 co-relation queries the response was YES. [2024-06-28 01:44:16,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34644 conditions, 5274 events. 2838/5274 cut-off events. For 122290/122290 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 39733 event pairs, 1554 based on Foata normal form. 6/5111 useless extension candidates. Maximal degree in co-relation 34484. Up to 4993 conditions per place. [2024-06-28 01:44:16,457 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 361 selfloop transitions, 15 changer transitions 0/383 dead transitions. [2024-06-28 01:44:16,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 383 transitions, 7746 flow [2024-06-28 01:44:16,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:16,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:16,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 132 transitions. [2024-06-28 01:44:16,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41904761904761906 [2024-06-28 01:44:16,458 INFO L175 Difference]: Start difference. First operand has 333 places, 359 transitions, 6824 flow. Second operand 9 states and 132 transitions. [2024-06-28 01:44:16,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 383 transitions, 7746 flow [2024-06-28 01:44:17,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 383 transitions, 7362 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:17,485 INFO L231 Difference]: Finished difference. Result has 334 places, 360 transitions, 6507 flow [2024-06-28 01:44:17,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6440, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6507, PETRI_PLACES=334, PETRI_TRANSITIONS=360} [2024-06-28 01:44:17,486 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 295 predicate places. [2024-06-28 01:44:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 360 transitions, 6507 flow [2024-06-28 01:44:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:44:17,486 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:17,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,486 INFO L85 PathProgramCache]: Analyzing trace with hash 839251318, now seen corresponding path program 11 times [2024-06-28 01:44:17,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962652996] [2024-06-28 01:44:17,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:18,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:18,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:18,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962652996] [2024-06-28 01:44:18,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962652996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:18,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:18,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:18,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645990149] [2024-06-28 01:44:18,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:18,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:18,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:18,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:18,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:18,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:18,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 360 transitions, 6507 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:18,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:18,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:18,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:19,637 INFO L124 PetriNetUnfolderBase]: 2831/5253 cut-off events. [2024-06-28 01:44:19,637 INFO L125 PetriNetUnfolderBase]: For 99069/99069 co-relation queries the response was YES. [2024-06-28 01:44:19,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33503 conditions, 5253 events. 2831/5253 cut-off events. For 99069/99069 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 39418 event pairs, 1227 based on Foata normal form. 6/5090 useless extension candidates. Maximal degree in co-relation 33342. Up to 4628 conditions per place. [2024-06-28 01:44:19,703 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 281 selfloop transitions, 97 changer transitions 0/385 dead transitions. [2024-06-28 01:44:19,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 385 transitions, 7417 flow [2024-06-28 01:44:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:44:19,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4507936507936508 [2024-06-28 01:44:19,704 INFO L175 Difference]: Start difference. First operand has 334 places, 360 transitions, 6507 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:44:19,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 385 transitions, 7417 flow [2024-06-28 01:44:20,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 385 transitions, 7299 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:20,669 INFO L231 Difference]: Finished difference. Result has 336 places, 360 transitions, 6588 flow [2024-06-28 01:44:20,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=6389, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6588, PETRI_PLACES=336, PETRI_TRANSITIONS=360} [2024-06-28 01:44:20,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 297 predicate places. [2024-06-28 01:44:20,670 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 360 transitions, 6588 flow [2024-06-28 01:44:20,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:20,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:44:20,670 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:20,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1711175910, now seen corresponding path program 12 times [2024-06-28 01:44:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951279883] [2024-06-28 01:44:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,477 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 01:44:21,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951279883] [2024-06-28 01:44:21,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951279883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:21,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898780147] [2024-06-28 01:44:21,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:21,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:21,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:21,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 35 [2024-06-28 01:44:21,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 360 transitions, 6588 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 35 [2024-06-28 01:44:21,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:22,837 INFO L124 PetriNetUnfolderBase]: 2824/5240 cut-off events. [2024-06-28 01:44:22,838 INFO L125 PetriNetUnfolderBase]: For 81661/81661 co-relation queries the response was YES. [2024-06-28 01:44:22,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33048 conditions, 5240 events. 2824/5240 cut-off events. For 81661/81661 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 39261 event pairs, 1153 based on Foata normal form. 6/5085 useless extension candidates. Maximal degree in co-relation 32886. Up to 4103 conditions per place. [2024-06-28 01:44:22,906 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 266 selfloop transitions, 120 changer transitions 0/393 dead transitions. [2024-06-28 01:44:22,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 393 transitions, 7434 flow [2024-06-28 01:44:22,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:22,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:22,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:44:22,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-28 01:44:22,907 INFO L175 Difference]: Start difference. First operand has 336 places, 360 transitions, 6588 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:44:22,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 393 transitions, 7434 flow [2024-06-28 01:44:23,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 393 transitions, 6754 flow, removed 105 selfloop flow, removed 32 redundant places. [2024-06-28 01:44:23,534 INFO L231 Difference]: Finished difference. Result has 312 places, 359 transitions, 5998 flow [2024-06-28 01:44:23,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5998, PETRI_PLACES=312, PETRI_TRANSITIONS=359} [2024-06-28 01:44:23,534 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 273 predicate places. [2024-06-28 01:44:23,534 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 359 transitions, 5998 flow [2024-06-28 01:44:23,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:23,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:23,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:44:23,535 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:23,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:23,535 INFO L85 PathProgramCache]: Analyzing trace with hash -2046657906, now seen corresponding path program 1 times [2024-06-28 01:44:23,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625581541] [2024-06-28 01:44:23,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:23,604 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 01:44:23,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625581541] [2024-06-28 01:44:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625581541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:23,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819800688] [2024-06-28 01:44:23,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:23,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 35 [2024-06-28 01:44:23,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 359 transitions, 5998 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:23,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 35 [2024-06-28 01:44:23,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,348 INFO L124 PetriNetUnfolderBase]: 1931/4051 cut-off events. [2024-06-28 01:44:24,348 INFO L125 PetriNetUnfolderBase]: For 33538/33706 co-relation queries the response was YES. [2024-06-28 01:44:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21896 conditions, 4051 events. 1931/4051 cut-off events. For 33538/33706 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 32953 event pairs, 420 based on Foata normal form. 368/4247 useless extension candidates. Maximal degree in co-relation 21760. Up to 1494 conditions per place. [2024-06-28 01:44:24,392 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 136 selfloop transitions, 81 changer transitions 0/296 dead transitions. [2024-06-28 01:44:24,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 296 transitions, 5621 flow [2024-06-28 01:44:24,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:44:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:44:24,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 01:44:24,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6057142857142858 [2024-06-28 01:44:24,393 INFO L175 Difference]: Start difference. First operand has 312 places, 359 transitions, 5998 flow. Second operand 5 states and 106 transitions. [2024-06-28 01:44:24,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 296 transitions, 5621 flow [2024-06-28 01:44:24,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 296 transitions, 3840 flow, removed 222 selfloop flow, removed 69 redundant places. [2024-06-28 01:44:24,626 INFO L231 Difference]: Finished difference. Result has 249 places, 287 transitions, 3632 flow [2024-06-28 01:44:24,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3632, PETRI_PLACES=249, PETRI_TRANSITIONS=287} [2024-06-28 01:44:24,626 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 210 predicate places. [2024-06-28 01:44:24,626 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 287 transitions, 3632 flow [2024-06-28 01:44:24,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:24,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:24,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:44:24,626 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:24,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 2144293422, now seen corresponding path program 1 times [2024-06-28 01:44:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:24,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068087630] [2024-06-28 01:44:24,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:24,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:24,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:24,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:24,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068087630] [2024-06-28 01:44:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068087630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:24,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:24,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012117050] [2024-06-28 01:44:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:24,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:24,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:24,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:24,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:24,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-06-28 01:44:24,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 287 transitions, 3632 flow. Second operand has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:24,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-06-28 01:44:24,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:25,483 INFO L124 PetriNetUnfolderBase]: 1481/3474 cut-off events. [2024-06-28 01:44:25,483 INFO L125 PetriNetUnfolderBase]: For 12466/12477 co-relation queries the response was YES. [2024-06-28 01:44:25,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14859 conditions, 3474 events. 1481/3474 cut-off events. For 12466/12477 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 29693 event pairs, 408 based on Foata normal form. 12/3224 useless extension candidates. Maximal degree in co-relation 14773. Up to 1873 conditions per place. [2024-06-28 01:44:25,507 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 28 selfloop transitions, 6 changer transitions 253/310 dead transitions. [2024-06-28 01:44:25,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 310 transitions, 4124 flow [2024-06-28 01:44:25,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:25,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:44:25,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-28 01:44:25,508 INFO L175 Difference]: Start difference. First operand has 249 places, 287 transitions, 3632 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:44:25,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 310 transitions, 4124 flow [2024-06-28 01:44:25,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 310 transitions, 3942 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:25,585 INFO L231 Difference]: Finished difference. Result has 256 places, 52 transitions, 290 flow [2024-06-28 01:44:25,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3450, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=256, PETRI_TRANSITIONS=52} [2024-06-28 01:44:25,586 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 217 predicate places. [2024-06-28 01:44:25,586 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 52 transitions, 290 flow [2024-06-28 01:44:25,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.0) internal successors, (126), 9 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:25,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:25,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:25,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:44:25,586 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:25,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:25,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1307584126, now seen corresponding path program 2 times [2024-06-28 01:44:25,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:25,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862197588] [2024-06-28 01:44:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:25,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:26,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:26,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:26,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862197588] [2024-06-28 01:44:26,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862197588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:26,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:26,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:44:26,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926957349] [2024-06-28 01:44:26,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:26,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:26,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:26,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-06-28 01:44:26,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 52 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:26,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-06-28 01:44:26,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:26,483 INFO L124 PetriNetUnfolderBase]: 229/581 cut-off events. [2024-06-28 01:44:26,483 INFO L125 PetriNetUnfolderBase]: For 792/793 co-relation queries the response was YES. [2024-06-28 01:44:26,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 581 events. 229/581 cut-off events. For 792/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3296 event pairs, 54 based on Foata normal form. 5/549 useless extension candidates. Maximal degree in co-relation 1803. Up to 212 conditions per place. [2024-06-28 01:44:26,487 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 23 selfloop transitions, 7 changer transitions 29/72 dead transitions. [2024-06-28 01:44:26,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 72 transitions, 484 flow [2024-06-28 01:44:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:26,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:26,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:44:26,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4685714285714286 [2024-06-28 01:44:26,488 INFO L175 Difference]: Start difference. First operand has 256 places, 52 transitions, 290 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:44:26,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 72 transitions, 484 flow [2024-06-28 01:44:26,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 72 transitions, 407 flow, removed 21 selfloop flow, removed 22 redundant places. [2024-06-28 01:44:26,492 INFO L231 Difference]: Finished difference. Result has 125 places, 35 transitions, 161 flow [2024-06-28 01:44:26,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=161, PETRI_PLACES=125, PETRI_TRANSITIONS=35} [2024-06-28 01:44:26,492 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 86 predicate places. [2024-06-28 01:44:26,492 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 35 transitions, 161 flow [2024-06-28 01:44:26,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.5) internal successors, (162), 12 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:26,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:26,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:44:26,493 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:26,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:26,493 INFO L85 PathProgramCache]: Analyzing trace with hash -405364930, now seen corresponding path program 3 times [2024-06-28 01:44:26,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:26,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235484715] [2024-06-28 01:44:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:44:26,508 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-28 01:44:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:44:26,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-28 01:44:26,550 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-28 01:44:26,551 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-28 01:44:26,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-28 01:44:26,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-28 01:44:26,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-28 01:44:26,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-28 01:44:26,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-28 01:44:26,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-28 01:44:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:44:26,556 INFO L445 BasicCegarLoop]: Path program histogram: [18, 13, 12, 10, 10, 6, 6, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:26,560 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:44:26,561 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:44:26,616 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 01:44:26,618 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 01:44:26,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:44:26 BasicIcfg [2024-06-28 01:44:26,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:44:26,619 INFO L158 Benchmark]: Toolchain (without parser) took 177544.39ms. Allocated memory was 125.8MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 72.9MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 112.5MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,619 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:44:26,620 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:44:26,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 585.43ms. Allocated memory is still 125.8MB. Free memory was 72.9MB in the beginning and 40.2MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.43ms. Allocated memory is still 125.8MB. Free memory was 40.2MB in the beginning and 95.0MB in the end (delta: -54.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,620 INFO L158 Benchmark]: Boogie Preprocessor took 62.51ms. Allocated memory is still 125.8MB. Free memory was 95.0MB in the beginning and 92.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,620 INFO L158 Benchmark]: RCFGBuilder took 532.83ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 45.0MB in the end (delta: 46.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,621 INFO L158 Benchmark]: TraceAbstraction took 176291.96ms. Allocated memory was 125.8MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 44.5MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. [2024-06-28 01:44:26,621 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 66.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 61.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 585.43ms. Allocated memory is still 125.8MB. Free memory was 72.9MB in the beginning and 40.2MB in the end (delta: 32.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.43ms. Allocated memory is still 125.8MB. Free memory was 40.2MB in the beginning and 95.0MB in the end (delta: -54.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.51ms. Allocated memory is still 125.8MB. Free memory was 95.0MB in the beginning and 92.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 532.83ms. Allocated memory is still 125.8MB. Free memory was 92.0MB in the beginning and 45.0MB in the end (delta: 46.9MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 176291.96ms. Allocated memory was 125.8MB in the beginning and 2.7GB in the end (delta: 2.6GB). Free memory was 44.5MB in the beginning and 2.6GB in the end (delta: -2.5GB). Peak memory consumption was 87.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L715] 0 _Bool x$flush_delayed; [L716] 0 int x$mem_tmp; [L717] 0 _Bool x$r_buff0_thd0; [L718] 0 _Bool x$r_buff0_thd1; [L719] 0 _Bool x$r_buff0_thd2; [L720] 0 _Bool x$r_buff1_thd0; [L721] 0 _Bool x$r_buff1_thd1; [L722] 0 _Bool x$r_buff1_thd2; [L723] 0 _Bool x$read_delayed; [L724] 0 int *x$read_delayed_var; [L725] 0 int x$w_buff0; [L726] 0 _Bool x$w_buff0_used; [L727] 0 int x$w_buff1; [L728] 0 _Bool x$w_buff1_used; [L730] 0 int y = 0; [L731] 0 _Bool weak$$choice0; [L732] 0 _Bool weak$$choice2; [L792] 0 pthread_t t1447; [L793] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L793] FCALL, FORK 0 pthread_create(&t1447, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L794] 0 pthread_t t1448; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L795] 0 //@ assert ((((((((((((((!multithreaded || ((y == 0) || (y == 1))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || ((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))) && ((x$w_buff0 == 0) || (x$w_buff0 == 2))) && ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && ((y == 0) || (y == 1))) && (((x == 0) || (x == 1)) || (x == 2))) && (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2))))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))); [L795] FCALL, FORK 0 pthread_create(&t1448, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L796] 0 //@ assert ((((((((((((((!multithreaded || ((y == 0) || (y == 1))) && (!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || ((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1))) && ((x$w_buff0 == 0) || (x$w_buff0 == 2))) && ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && ((y == 0) || (y == 1))) && (((x == 0) || (x == 1)) || (x == 2))) && (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2))))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || ((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L756] 2 x$w_buff1 = x$w_buff0 [L757] 2 x$w_buff0 = 2 [L758] 2 x$w_buff1_used = x$w_buff0_used [L759] 2 x$w_buff0_used = (_Bool)1 [L760] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L760] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L761] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L762] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L763] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L764] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L767] 2 __unbuffered_p1_EAX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L736] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L739] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L742] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L743] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L744] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L745] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L746] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=1] [L770] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L771] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L772] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L773] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L774] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L777] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L749] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L797] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L799] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L799] RET 0 assume_abort_if_not(main$tmp_guard0) [L801] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L802] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L803] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L804] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L805] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L808] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L809] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L810] 0 x$flush_delayed = weak$$choice2 [L811] 0 x$mem_tmp = x [L812] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L813] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L814] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L815] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L816] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L817] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L818] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L819] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p1_EAX == 0) [L820] 0 x = x$flush_delayed ? x$mem_tmp : x [L821] 0 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1447=-2, t1448=-1, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L823] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 796]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 795]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 176.1s, OverallIterations: 110, TraceHistogramMax: 1, PathProgramHistogramMax: 18, EmptinessCheckTime: 0.0s, AutomataDifference: 120.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6146 SdHoareTripleChecker+Valid, 24.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5347 mSDsluCounter, 2957 SdHoareTripleChecker+Invalid, 20.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2528 mSDsCounter, 1538 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 37957 IncrementalHoareTripleChecker+Invalid, 39495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1538 mSolverCounterUnsat, 429 mSDtfsCounter, 37957 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 997 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 987 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 22.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8592occurred in iteration=57, InterpolantAutomatonStates: 941, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 54.0s InterpolantComputationTime, 1646 NumberOfCodeBlocks, 1646 NumberOfCodeBlocksAsserted, 110 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 60719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 109 InterpolantComputations, 109 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-28 01:44:26,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE