./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:28:23,874 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:28:23,940 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:28:23,949 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:28:23,950 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:28:23,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:28:23,975 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:28:23,975 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:28:23,976 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:28:23,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:28:23,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:28:23,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:28:23,980 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:28:23,981 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:28:23,981 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:28:23,981 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:28:23,982 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:28:23,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:28:23,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:28:23,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:28:23,982 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:28:23,983 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:28:23,984 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:28:23,984 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:28:23,984 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:28:23,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:28:23,985 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:28:23,985 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:28:23,985 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:28:23,985 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:28:23,986 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:28:23,986 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:28:23,987 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:28:23,987 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:28:23,987 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:28:23,987 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:28:23,987 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:28:23,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:28:23,988 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:28:23,988 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:28:23,988 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:28:23,988 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:28:23,989 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:28:23,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:28:24,198 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:28:24,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:28:24,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:28:24,236 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:28:24,236 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:28:24,237 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-28 01:28:25,296 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:28:25,527 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:28:25,527 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix022_tso.i [2024-06-28 01:28:25,539 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/568b3cced/1ce012a8e05044f69768a5bc4dcf1ddd/FLAG088b40118 [2024-06-28 01:28:25,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/568b3cced/1ce012a8e05044f69768a5bc4dcf1ddd [2024-06-28 01:28:25,552 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:28:25,553 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:28:25,554 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix022_tso.yml/witness.yml [2024-06-28 01:28:25,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:28:25,678 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:28:25,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:28:25,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:28:25,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:28:25,683 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:28:25" (1/2) ... [2024-06-28 01:28:25,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2734a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:28:25" (1/2) ... [2024-06-28 01:28:25,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7638e7f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:25" (2/2) ... [2024-06-28 01:28:25,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2734a3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:25, skipping insertion in model container [2024-06-28 01:28:25,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:25" (2/2) ... [2024-06-28 01:28:25,687 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:28:25,740 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:28:25,741 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:28:25,741 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || x$r_buff1_thd0 == (_Bool)0) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:28:25,741 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:28:25,742 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-28 01:28:25,778 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:28:25,953 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/mix022_tso.i[944,957] [2024-06-28 01:28:26,142 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:28:26,156 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:28:26,184 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/mix022_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:28:26,330 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:28:26,391 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:28:26,395 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26 WrapperNode [2024-06-28 01:28:26,396 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:28:26,397 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:28:26,397 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:28:26,397 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:28:26,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,427 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,463 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-28 01:28:26,463 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:28:26,464 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:28:26,464 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:28:26,464 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:28:26,472 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,475 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,510 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 01:28:26,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,517 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,518 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,520 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,521 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,523 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:28:26,524 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:28:26,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:28:26,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:28:26,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (1/1) ... [2024-06-28 01:28:26,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:28:26,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:28:26,554 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 01:28:26,560 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 01:28:26,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:28:26,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:28:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:28:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:28:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:28:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:28:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:28:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:28:26,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:28:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:28:26,610 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 01:28:26,703 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:28:26,705 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:28:26,941 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:28:26,941 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:28:27,082 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:28:27,082 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:28:27,082 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:28:27 BoogieIcfgContainer [2024-06-28 01:28:27,083 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:28:27,086 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:28:27,086 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:28:27,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:28:27,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:28:25" (1/4) ... [2024-06-28 01:28:27,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224f0acc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:28:27, skipping insertion in model container [2024-06-28 01:28:27,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:28:25" (2/4) ... [2024-06-28 01:28:27,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224f0acc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:28:27, skipping insertion in model container [2024-06-28 01:28:27,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:28:26" (3/4) ... [2024-06-28 01:28:27,095 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@224f0acc and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:28:27, skipping insertion in model container [2024-06-28 01:28:27,095 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:28:27" (4/4) ... [2024-06-28 01:28:27,096 INFO L112 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2024-06-28 01:28:27,110 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:28:27,110 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:28:27,110 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:28:27,148 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:28:27,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:28:27,208 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-28 01:28:27,208 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:28:27,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-28 01:28:27,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-28 01:28:27,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-28 01:28:27,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:28:27,227 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;@346d189e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:28:27,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:28:27,231 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:28:27,231 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:28:27,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:28:27,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:27,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:28:27,232 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 01:28:27,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 346938358, now seen corresponding path program 1 times [2024-06-28 01:28:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:27,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264989557] [2024-06-28 01:28:27,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:27,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:27,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:27,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:27,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264989557] [2024-06-28 01:28:27,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264989557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:27,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:27,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:28:27,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341938765] [2024-06-28 01:28:27,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:27,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:28:27,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:28:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:28:28,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-28 01:28:28,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 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 01:28:28,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-28 01:28:28,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:28,284 INFO L124 PetriNetUnfolderBase]: 543/952 cut-off events. [2024-06-28 01:28:28,285 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:28:28,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 952 events. 543/952 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4754 event pairs, 234 based on Foata normal form. 43/933 useless extension candidates. Maximal degree in co-relation 1861. Up to 892 conditions per place. [2024-06-28 01:28:28,294 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:28:28,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 171 flow [2024-06-28 01:28:28,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:28:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:28:28,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-28 01:28:28,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-28 01:28:28,306 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-06-28 01:28:28,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 171 flow [2024-06-28 01:28:28,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:28,311 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-28 01:28:28,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-28 01:28:28,317 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-28 01:28:28,318 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-28 01:28:28,318 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 01:28:28,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:28,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:28,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:28:28,319 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 01:28:28,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:28,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1599562897, now seen corresponding path program 1 times [2024-06-28 01:28:28,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:28,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29199561] [2024-06-28 01:28:28,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:28,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:28,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:28,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:28,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29199561] [2024-06-28 01:28:28,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29199561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:28,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:28,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:28:28,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425091334] [2024-06-28 01:28:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:28,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:28:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:28:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:28:28,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:28:28,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 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 01:28:28,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:28,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:28:28,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:28,984 INFO L124 PetriNetUnfolderBase]: 621/1034 cut-off events. [2024-06-28 01:28:28,985 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-28 01:28:28,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1034 events. 621/1034 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4958 event pairs, 212 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2299. Up to 997 conditions per place. [2024-06-28 01:28:28,990 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-28 01:28:28,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 246 flow [2024-06-28 01:28:28,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:28:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:28:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-28 01:28:28,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-28 01:28:28,993 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-28 01:28:28,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 246 flow [2024-06-28 01:28:28,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:28:28,996 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-28 01:28:28,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-28 01:28:28,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-28 01:28:28,997 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-28 01:28:28,997 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 01:28:28,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:28,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:28,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:28:28,998 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 01:28:29,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1953158983, now seen corresponding path program 1 times [2024-06-28 01:28:29,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143357198] [2024-06-28 01:28:29,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:29,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:29,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143357198] [2024-06-28 01:28:29,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143357198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:29,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:29,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:28:29,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855339021] [2024-06-28 01:28:29,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:29,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:28:29,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:29,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:28:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:28:29,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:28:29,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 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 01:28:29,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:29,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:28:29,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,619 INFO L124 PetriNetUnfolderBase]: 613/1163 cut-off events. [2024-06-28 01:28:29,619 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-06-28 01:28:29,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1163 events. 613/1163 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 197 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 2618. Up to 968 conditions per place. [2024-06-28 01:28:29,627 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 49 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-28 01:28:29,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 358 flow [2024-06-28 01:28:29,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-28 01:28:29,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 01:28:29,633 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 5 states and 108 transitions. [2024-06-28 01:28:29,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 358 flow [2024-06-28 01:28:29,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 332 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:29,635 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 229 flow [2024-06-28 01:28:29,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-06-28 01:28:29,636 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-28 01:28:29,636 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 229 flow [2024-06-28 01:28:29,636 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 01:28:29,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:29,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:29,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:28:29,637 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 01:28:29,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1949687049, now seen corresponding path program 1 times [2024-06-28 01:28:29,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212167751] [2024-06-28 01:28:29,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:29,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:29,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212167751] [2024-06-28 01:28:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212167751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:29,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:28:29,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6550225] [2024-06-28 01:28:29,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:28:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:29,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:28:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:28:29,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 36 [2024-06-28 01:28:29,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 229 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 01:28:29,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:29,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 36 [2024-06-28 01:28:29,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:29,792 INFO L124 PetriNetUnfolderBase]: 236/604 cut-off events. [2024-06-28 01:28:29,793 INFO L125 PetriNetUnfolderBase]: For 268/294 co-relation queries the response was YES. [2024-06-28 01:28:29,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 604 events. 236/604 cut-off events. For 268/294 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3681 event pairs, 110 based on Foata normal form. 10/575 useless extension candidates. Maximal degree in co-relation 1265. Up to 381 conditions per place. [2024-06-28 01:28:29,796 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 26 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-28 01:28:29,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 270 flow [2024-06-28 01:28:29,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:28:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:28:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-28 01:28:29,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2024-06-28 01:28:29,797 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 229 flow. Second operand 3 states and 77 transitions. [2024-06-28 01:28:29,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 270 flow [2024-06-28 01:28:29,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:28:29,800 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 196 flow [2024-06-28 01:28:29,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-28 01:28:29,800 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-28 01:28:29,801 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 196 flow [2024-06-28 01:28:29,801 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 01:28:29,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:29,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:29,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:28:29,801 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 01:28:29,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:29,802 INFO L85 PathProgramCache]: Analyzing trace with hash 200585610, now seen corresponding path program 1 times [2024-06-28 01:28:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017507439] [2024-06-28 01:28:29,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:29,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:30,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:30,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:30,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017507439] [2024-06-28 01:28:30,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017507439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:30,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:30,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356925997] [2024-06-28 01:28:30,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:30,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:30,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:30,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-28 01:28:30,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 196 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 01:28:30,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:30,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-28 01:28:30,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:30,760 INFO L124 PetriNetUnfolderBase]: 531/1011 cut-off events. [2024-06-28 01:28:30,760 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-28 01:28:30,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1011 events. 531/1011 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5174 event pairs, 180 based on Foata normal form. 4/972 useless extension candidates. Maximal degree in co-relation 2431. Up to 808 conditions per place. [2024-06-28 01:28:30,765 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 12 changer transitions 1/69 dead transitions. [2024-06-28 01:28:30,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 376 flow [2024-06-28 01:28:30,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-28 01:28:30,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-28 01:28:30,766 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 196 flow. Second operand 6 states and 119 transitions. [2024-06-28 01:28:30,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 376 flow [2024-06-28 01:28:30,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:30,769 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 217 flow [2024-06-28 01:28:30,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-28 01:28:30,769 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-28 01:28:30,770 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 217 flow [2024-06-28 01:28:30,770 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 01:28:30,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:30,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:28:30,771 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 01:28:30,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:30,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1043195360, now seen corresponding path program 1 times [2024-06-28 01:28:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132961747] [2024-06-28 01:28:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:30,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:30,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:31,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:31,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:31,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132961747] [2024-06-28 01:28:31,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132961747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:31,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:31,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:28:31,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292963624] [2024-06-28 01:28:31,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:31,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:28:31,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:31,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:28:31,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:28:31,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:31,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 217 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 01:28:31,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:31,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:31,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:31,461 INFO L124 PetriNetUnfolderBase]: 452/894 cut-off events. [2024-06-28 01:28:31,462 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2024-06-28 01:28:31,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 894 events. 452/894 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4626 event pairs, 185 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 2242. Up to 738 conditions per place. [2024-06-28 01:28:31,466 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 48 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-28 01:28:31,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 386 flow [2024-06-28 01:28:31,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:28:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:28:31,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-28 01:28:31,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:28:31,481 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 217 flow. Second operand 5 states and 86 transitions. [2024-06-28 01:28:31,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 386 flow [2024-06-28 01:28:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 353 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:31,483 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 246 flow [2024-06-28 01:28:31,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-28 01:28:31,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-28 01:28:31,484 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 246 flow [2024-06-28 01:28:31,484 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 01:28:31,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:31,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:31,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:28:31,484 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 01:28:31,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:31,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2020681263, now seen corresponding path program 1 times [2024-06-28 01:28:31,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:31,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136713938] [2024-06-28 01:28:31,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:31,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:32,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136713938] [2024-06-28 01:28:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136713938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:32,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381967672] [2024-06-28 01:28:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:32,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:32,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:32,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-28 01:28:32,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:32,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-28 01:28:32,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:32,449 INFO L124 PetriNetUnfolderBase]: 455/914 cut-off events. [2024-06-28 01:28:32,449 INFO L125 PetriNetUnfolderBase]: For 986/986 co-relation queries the response was YES. [2024-06-28 01:28:32,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 914 events. 455/914 cut-off events. For 986/986 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4799 event pairs, 276 based on Foata normal form. 1/877 useless extension candidates. Maximal degree in co-relation 2380. Up to 731 conditions per place. [2024-06-28 01:28:32,453 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 52 selfloop transitions, 12 changer transitions 0/71 dead transitions. [2024-06-28 01:28:32,453 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 445 flow [2024-06-28 01:28:32,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:32,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:32,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-28 01:28:32,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44841269841269843 [2024-06-28 01:28:32,454 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 246 flow. Second operand 7 states and 113 transitions. [2024-06-28 01:28:32,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 445 flow [2024-06-28 01:28:32,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 435 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:32,457 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 306 flow [2024-06-28 01:28:32,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-06-28 01:28:32,457 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 20 predicate places. [2024-06-28 01:28:32,457 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 306 flow [2024-06-28 01:28:32,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:32,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:32,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:32,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:28:32,458 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 01:28:32,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:32,458 INFO L85 PathProgramCache]: Analyzing trace with hash -627970037, now seen corresponding path program 1 times [2024-06-28 01:28:32,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:32,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118926144] [2024-06-28 01:28:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:32,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:32,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:32,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:32,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118926144] [2024-06-28 01:28:32,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118926144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:32,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:32,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201414135] [2024-06-28 01:28:32,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:32,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:32,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:32,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:32,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:32,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:32,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 306 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 01:28:32,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:32,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:32,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:33,101 INFO L124 PetriNetUnfolderBase]: 562/1084 cut-off events. [2024-06-28 01:28:33,101 INFO L125 PetriNetUnfolderBase]: For 1555/1555 co-relation queries the response was YES. [2024-06-28 01:28:33,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3073 conditions, 1084 events. 562/1084 cut-off events. For 1555/1555 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5593 event pairs, 311 based on Foata normal form. 1/1038 useless extension candidates. Maximal degree in co-relation 3046. Up to 895 conditions per place. [2024-06-28 01:28:33,106 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 62 selfloop transitions, 16 changer transitions 0/84 dead transitions. [2024-06-28 01:28:33,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 84 transitions, 566 flow [2024-06-28 01:28:33,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 01:28:33,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2024-06-28 01:28:33,107 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 306 flow. Second operand 7 states and 114 transitions. [2024-06-28 01:28:33,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 84 transitions, 566 flow [2024-06-28 01:28:33,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 540 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:33,110 INFO L231 Difference]: Finished difference. Result has 65 places, 65 transitions, 397 flow [2024-06-28 01:28:33,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=65, PETRI_TRANSITIONS=65} [2024-06-28 01:28:33,111 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 25 predicate places. [2024-06-28 01:28:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 65 transitions, 397 flow [2024-06-28 01:28:33,111 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 01:28:33,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:33,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:33,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:28:33,112 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 01:28:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:33,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1917950743, now seen corresponding path program 2 times [2024-06-28 01:28:33,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:33,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277926904] [2024-06-28 01:28:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:33,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:33,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:33,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277926904] [2024-06-28 01:28:33,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277926904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:33,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:33,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:33,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468971595] [2024-06-28 01:28:33,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:33,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:33,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:33,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:33,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:33,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 65 transitions, 397 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 01:28:33,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:33,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:33,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:33,864 INFO L124 PetriNetUnfolderBase]: 588/1131 cut-off events. [2024-06-28 01:28:33,864 INFO L125 PetriNetUnfolderBase]: For 2245/2245 co-relation queries the response was YES. [2024-06-28 01:28:33,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3526 conditions, 1131 events. 588/1131 cut-off events. For 2245/2245 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5892 event pairs, 311 based on Foata normal form. 1/1082 useless extension candidates. Maximal degree in co-relation 3496. Up to 928 conditions per place. [2024-06-28 01:28:33,870 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 60 selfloop transitions, 21 changer transitions 0/87 dead transitions. [2024-06-28 01:28:33,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 87 transitions, 673 flow [2024-06-28 01:28:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:33,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:33,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-28 01:28:33,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-28 01:28:33,871 INFO L175 Difference]: Start difference. First operand has 65 places, 65 transitions, 397 flow. Second operand 7 states and 108 transitions. [2024-06-28 01:28:33,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 87 transitions, 673 flow [2024-06-28 01:28:33,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 650 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:33,875 INFO L231 Difference]: Finished difference. Result has 70 places, 73 transitions, 498 flow [2024-06-28 01:28:33,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=498, PETRI_PLACES=70, PETRI_TRANSITIONS=73} [2024-06-28 01:28:33,876 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 30 predicate places. [2024-06-28 01:28:33,876 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 73 transitions, 498 flow [2024-06-28 01:28:33,876 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 01:28:33,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:33,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:33,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:28:33,877 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 01:28:33,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:33,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1783382335, now seen corresponding path program 3 times [2024-06-28 01:28:33,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:33,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377387991] [2024-06-28 01:28:33,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:33,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:34,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:34,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377387991] [2024-06-28 01:28:34,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377387991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:34,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:34,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:28:34,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104897169] [2024-06-28 01:28:34,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:34,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:28:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:34,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:28:34,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:28:34,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:34,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 73 transitions, 498 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 01:28:34,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:34,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:34,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:34,550 INFO L124 PetriNetUnfolderBase]: 591/1130 cut-off events. [2024-06-28 01:28:34,551 INFO L125 PetriNetUnfolderBase]: For 2786/2786 co-relation queries the response was YES. [2024-06-28 01:28:34,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3736 conditions, 1130 events. 591/1130 cut-off events. For 2786/2786 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5917 event pairs, 294 based on Foata normal form. 1/1083 useless extension candidates. Maximal degree in co-relation 3704. Up to 900 conditions per place. [2024-06-28 01:28:34,557 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 62 selfloop transitions, 24 changer transitions 0/92 dead transitions. [2024-06-28 01:28:34,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 92 transitions, 752 flow [2024-06-28 01:28:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:28:34,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:28:34,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:28:34,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-28 01:28:34,558 INFO L175 Difference]: Start difference. First operand has 70 places, 73 transitions, 498 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:28:34,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 92 transitions, 752 flow [2024-06-28 01:28:34,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 92 transitions, 731 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:34,563 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 550 flow [2024-06-28 01:28:34,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=550, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2024-06-28 01:28:34,564 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 34 predicate places. [2024-06-28 01:28:34,564 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 550 flow [2024-06-28 01:28:34,564 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 01:28:34,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:34,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:34,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:28:34,565 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 01:28:34,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash -534748229, now seen corresponding path program 1 times [2024-06-28 01:28:34,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:34,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434189448] [2024-06-28 01:28:34,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:34,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:34,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:34,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434189448] [2024-06-28 01:28:34,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434189448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:34,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:34,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:34,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981163554] [2024-06-28 01:28:34,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:34,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:34,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:34,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:35,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:35,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 550 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 01:28:35,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:35,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:35,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:35,275 INFO L124 PetriNetUnfolderBase]: 622/1180 cut-off events. [2024-06-28 01:28:35,276 INFO L125 PetriNetUnfolderBase]: For 3640/3640 co-relation queries the response was YES. [2024-06-28 01:28:35,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1180 events. 622/1180 cut-off events. For 3640/3640 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6129 event pairs, 181 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 4039. Up to 926 conditions per place. [2024-06-28 01:28:35,281 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 74 selfloop transitions, 33 changer transitions 0/113 dead transitions. [2024-06-28 01:28:35,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 113 transitions, 915 flow [2024-06-28 01:28:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:35,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:28:35,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:28:35,283 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 550 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:28:35,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 113 transitions, 915 flow [2024-06-28 01:28:35,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 858 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:35,288 INFO L231 Difference]: Finished difference. Result has 80 places, 87 transitions, 666 flow [2024-06-28 01:28:35,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=666, PETRI_PLACES=80, PETRI_TRANSITIONS=87} [2024-06-28 01:28:35,288 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 40 predicate places. [2024-06-28 01:28:35,289 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 87 transitions, 666 flow [2024-06-28 01:28:35,289 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 01:28:35,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:35,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:35,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:28:35,289 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 01:28:35,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:35,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1459583763, now seen corresponding path program 2 times [2024-06-28 01:28:35,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:35,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494870718] [2024-06-28 01:28:35,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:35,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:35,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:35,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:35,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494870718] [2024-06-28 01:28:35,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494870718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:35,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:35,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:35,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85584332] [2024-06-28 01:28:35,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:35,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:35,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:35,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:35,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:35,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:35,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 666 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 01:28:35,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:35,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:35,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:36,053 INFO L124 PetriNetUnfolderBase]: 684/1274 cut-off events. [2024-06-28 01:28:36,053 INFO L125 PetriNetUnfolderBase]: For 5228/5228 co-relation queries the response was YES. [2024-06-28 01:28:36,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 1274 events. 684/1274 cut-off events. For 5228/5228 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6608 event pairs, 203 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 4947. Up to 988 conditions per place. [2024-06-28 01:28:36,062 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 82 selfloop transitions, 46 changer transitions 0/134 dead transitions. [2024-06-28 01:28:36,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 134 transitions, 1226 flow [2024-06-28 01:28:36,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:36,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:36,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:28:36,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:28:36,064 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 666 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:28:36,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 134 transitions, 1226 flow [2024-06-28 01:28:36,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 134 transitions, 1130 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:36,073 INFO L231 Difference]: Finished difference. Result has 88 places, 109 transitions, 940 flow [2024-06-28 01:28:36,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=940, PETRI_PLACES=88, PETRI_TRANSITIONS=109} [2024-06-28 01:28:36,075 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2024-06-28 01:28:36,075 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 109 transitions, 940 flow [2024-06-28 01:28:36,075 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 01:28:36,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:36,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:36,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:28:36,076 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 01:28:36,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2007391488, now seen corresponding path program 1 times [2024-06-28 01:28:36,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:36,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007952381] [2024-06-28 01:28:36,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:36,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007952381] [2024-06-28 01:28:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007952381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:36,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:36,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217855250] [2024-06-28 01:28:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:36,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:36,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:36,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 109 transitions, 940 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 01:28:36,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:36,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:36,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:37,184 INFO L124 PetriNetUnfolderBase]: 697/1293 cut-off events. [2024-06-28 01:28:37,185 INFO L125 PetriNetUnfolderBase]: For 6380/6380 co-relation queries the response was YES. [2024-06-28 01:28:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5367 conditions, 1293 events. 697/1293 cut-off events. For 6380/6380 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6701 event pairs, 253 based on Foata normal form. 1/1247 useless extension candidates. Maximal degree in co-relation 5326. Up to 1077 conditions per place. [2024-06-28 01:28:37,193 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 105 selfloop transitions, 25 changer transitions 0/136 dead transitions. [2024-06-28 01:28:37,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 136 transitions, 1332 flow [2024-06-28 01:28:37,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:37,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:37,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:28:37,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-28 01:28:37,195 INFO L175 Difference]: Start difference. First operand has 88 places, 109 transitions, 940 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:28:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 136 transitions, 1332 flow [2024-06-28 01:28:37,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 136 transitions, 1276 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:37,205 INFO L231 Difference]: Finished difference. Result has 93 places, 112 transitions, 971 flow [2024-06-28 01:28:37,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=971, PETRI_PLACES=93, PETRI_TRANSITIONS=112} [2024-06-28 01:28:37,206 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-06-28 01:28:37,206 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 112 transitions, 971 flow [2024-06-28 01:28:37,206 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 01:28:37,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:37,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:37,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:28:37,207 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 01:28:37,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:37,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1997560241, now seen corresponding path program 3 times [2024-06-28 01:28:37,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32446865] [2024-06-28 01:28:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:37,667 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 01:28:37,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:37,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32446865] [2024-06-28 01:28:37,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32446865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:37,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:37,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:37,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737193957] [2024-06-28 01:28:37,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:37,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:37,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:37,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:37,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:37,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:37,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 112 transitions, 971 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 01:28:37,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:37,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:38,020 INFO L124 PetriNetUnfolderBase]: 733/1342 cut-off events. [2024-06-28 01:28:38,020 INFO L125 PetriNetUnfolderBase]: For 7534/7534 co-relation queries the response was YES. [2024-06-28 01:28:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5814 conditions, 1342 events. 733/1342 cut-off events. For 7534/7534 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6921 event pairs, 190 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 5772. Up to 998 conditions per place. [2024-06-28 01:28:38,029 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 92 selfloop transitions, 53 changer transitions 0/151 dead transitions. [2024-06-28 01:28:38,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 151 transitions, 1549 flow [2024-06-28 01:28:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-28 01:28:38,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-28 01:28:38,031 INFO L175 Difference]: Start difference. First operand has 93 places, 112 transitions, 971 flow. Second operand 8 states and 139 transitions. [2024-06-28 01:28:38,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 151 transitions, 1549 flow [2024-06-28 01:28:38,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 151 transitions, 1480 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:38,042 INFO L231 Difference]: Finished difference. Result has 96 places, 123 transitions, 1178 flow [2024-06-28 01:28:38,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=87, 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=1178, PETRI_PLACES=96, PETRI_TRANSITIONS=123} [2024-06-28 01:28:38,042 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 56 predicate places. [2024-06-28 01:28:38,042 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 123 transitions, 1178 flow [2024-06-28 01:28:38,043 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 01:28:38,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:38,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:38,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:28:38,043 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 01:28:38,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:38,043 INFO L85 PathProgramCache]: Analyzing trace with hash -673189283, now seen corresponding path program 4 times [2024-06-28 01:28:38,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:38,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535478722] [2024-06-28 01:28:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:38,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535478722] [2024-06-28 01:28:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535478722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984138255] [2024-06-28 01:28:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:38,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:38,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 123 transitions, 1178 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 01:28:38,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:38,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:38,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:38,883 INFO L124 PetriNetUnfolderBase]: 797/1437 cut-off events. [2024-06-28 01:28:38,884 INFO L125 PetriNetUnfolderBase]: For 9799/9799 co-relation queries the response was YES. [2024-06-28 01:28:38,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 1437 events. 797/1437 cut-off events. For 9799/9799 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7446 event pairs, 174 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 6725. Up to 1135 conditions per place. [2024-06-28 01:28:38,892 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 103 selfloop transitions, 58 changer transitions 0/167 dead transitions. [2024-06-28 01:28:38,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 167 transitions, 1863 flow [2024-06-28 01:28:38,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:38,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:28:38,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:28:38,893 INFO L175 Difference]: Start difference. First operand has 96 places, 123 transitions, 1178 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:28:38,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 167 transitions, 1863 flow [2024-06-28 01:28:38,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 167 transitions, 1743 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:38,908 INFO L231 Difference]: Finished difference. Result has 101 places, 147 transitions, 1520 flow [2024-06-28 01:28:38,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1520, PETRI_PLACES=101, PETRI_TRANSITIONS=147} [2024-06-28 01:28:38,909 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 61 predicate places. [2024-06-28 01:28:38,909 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 147 transitions, 1520 flow [2024-06-28 01:28:38,909 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 01:28:38,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:38,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:28:38,910 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 01:28:38,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash -673068166, now seen corresponding path program 2 times [2024-06-28 01:28:38,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:38,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536585965] [2024-06-28 01:28:38,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:38,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:39,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:39,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:39,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536585965] [2024-06-28 01:28:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536585965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:39,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:39,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:39,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6877886] [2024-06-28 01:28:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:39,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:39,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:39,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:39,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 147 transitions, 1520 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 01:28:39,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:39,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:39,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:39,843 INFO L124 PetriNetUnfolderBase]: 810/1468 cut-off events. [2024-06-28 01:28:39,844 INFO L125 PetriNetUnfolderBase]: For 10816/10816 co-relation queries the response was YES. [2024-06-28 01:28:39,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7129 conditions, 1468 events. 810/1468 cut-off events. For 10816/10816 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7725 event pairs, 248 based on Foata normal form. 1/1421 useless extension candidates. Maximal degree in co-relation 7082. Up to 1225 conditions per place. [2024-06-28 01:28:39,852 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 134 selfloop transitions, 32 changer transitions 0/172 dead transitions. [2024-06-28 01:28:39,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 172 transitions, 2005 flow [2024-06-28 01:28:39,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:39,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:39,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 01:28:39,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-28 01:28:39,853 INFO L175 Difference]: Start difference. First operand has 101 places, 147 transitions, 1520 flow. Second operand 7 states and 115 transitions. [2024-06-28 01:28:39,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 172 transitions, 2005 flow [2024-06-28 01:28:39,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 172 transitions, 1947 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:39,869 INFO L231 Difference]: Finished difference. Result has 106 places, 150 transitions, 1579 flow [2024-06-28 01:28:39,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1579, PETRI_PLACES=106, PETRI_TRANSITIONS=150} [2024-06-28 01:28:39,869 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 66 predicate places. [2024-06-28 01:28:39,870 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 150 transitions, 1579 flow [2024-06-28 01:28:39,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:28:39,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:39,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:39,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:28:39,870 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 01:28:39,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:39,871 INFO L85 PathProgramCache]: Analyzing trace with hash -727775815, now seen corresponding path program 5 times [2024-06-28 01:28:39,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:39,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542928695] [2024-06-28 01:28:39,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:39,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:40,250 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 01:28:40,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:40,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542928695] [2024-06-28 01:28:40,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542928695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:40,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:40,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:40,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002858580] [2024-06-28 01:28:40,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:40,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:40,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:40,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:40,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 150 transitions, 1579 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 01:28:40,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:40,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:40,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:40,632 INFO L124 PetriNetUnfolderBase]: 846/1514 cut-off events. [2024-06-28 01:28:40,632 INFO L125 PetriNetUnfolderBase]: For 12889/12889 co-relation queries the response was YES. [2024-06-28 01:28:40,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 1514 events. 846/1514 cut-off events. For 12889/12889 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7889 event pairs, 169 based on Foata normal form. 2/1467 useless extension candidates. Maximal degree in co-relation 7615. Up to 1073 conditions per place. [2024-06-28 01:28:40,641 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 102 selfloop transitions, 74 changer transitions 0/182 dead transitions. [2024-06-28 01:28:40,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 182 transitions, 2206 flow [2024-06-28 01:28:40,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:40,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:40,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:28:40,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-28 01:28:40,643 INFO L175 Difference]: Start difference. First operand has 106 places, 150 transitions, 1579 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:28:40,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 182 transitions, 2206 flow [2024-06-28 01:28:40,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 182 transitions, 2128 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:40,669 INFO L231 Difference]: Finished difference. Result has 109 places, 159 transitions, 1850 flow [2024-06-28 01:28:40,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1850, PETRI_PLACES=109, PETRI_TRANSITIONS=159} [2024-06-28 01:28:40,670 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2024-06-28 01:28:40,670 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 159 transitions, 1850 flow [2024-06-28 01:28:40,670 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 01:28:40,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:40,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:40,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:28:40,671 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 01:28:40,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:40,672 INFO L85 PathProgramCache]: Analyzing trace with hash 307971160, now seen corresponding path program 3 times [2024-06-28 01:28:40,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:40,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209779120] [2024-06-28 01:28:40,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:40,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:41,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209779120] [2024-06-28 01:28:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209779120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:41,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116248511] [2024-06-28 01:28:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:41,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:41,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:41,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:41,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:41,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 159 transitions, 1850 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 01:28:41,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:41,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:41,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:41,593 INFO L124 PetriNetUnfolderBase]: 864/1544 cut-off events. [2024-06-28 01:28:41,594 INFO L125 PetriNetUnfolderBase]: For 15895/15895 co-relation queries the response was YES. [2024-06-28 01:28:41,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8387 conditions, 1544 events. 864/1544 cut-off events. For 15895/15895 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8153 event pairs, 240 based on Foata normal form. 1/1498 useless extension candidates. Maximal degree in co-relation 8336. Up to 1247 conditions per place. [2024-06-28 01:28:41,602 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 142 selfloop transitions, 43 changer transitions 0/191 dead transitions. [2024-06-28 01:28:41,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 191 transitions, 2505 flow [2024-06-28 01:28:41,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:41,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 01:28:41,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-28 01:28:41,604 INFO L175 Difference]: Start difference. First operand has 109 places, 159 transitions, 1850 flow. Second operand 7 states and 118 transitions. [2024-06-28 01:28:41,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 191 transitions, 2505 flow [2024-06-28 01:28:41,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 191 transitions, 2407 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:41,627 INFO L231 Difference]: Finished difference. Result has 113 places, 167 transitions, 1975 flow [2024-06-28 01:28:41,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1975, PETRI_PLACES=113, PETRI_TRANSITIONS=167} [2024-06-28 01:28:41,627 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-06-28 01:28:41,627 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 167 transitions, 1975 flow [2024-06-28 01:28:41,628 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 01:28:41,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:41,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:41,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:28:41,628 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 01:28:41,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash -549721518, now seen corresponding path program 4 times [2024-06-28 01:28:41,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:41,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024888514] [2024-06-28 01:28:41,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:41,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:42,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:42,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:42,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024888514] [2024-06-28 01:28:42,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024888514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:42,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:42,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412527256] [2024-06-28 01:28:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:42,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:42,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:42,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:42,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:42,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:42,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 167 transitions, 1975 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 01:28:42,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:42,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:42,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:42,565 INFO L124 PetriNetUnfolderBase]: 862/1551 cut-off events. [2024-06-28 01:28:42,566 INFO L125 PetriNetUnfolderBase]: For 15513/15513 co-relation queries the response was YES. [2024-06-28 01:28:42,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8511 conditions, 1551 events. 862/1551 cut-off events. For 15513/15513 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8251 event pairs, 239 based on Foata normal form. 1/1501 useless extension candidates. Maximal degree in co-relation 8458. Up to 1298 conditions per place. [2024-06-28 01:28:42,576 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 153 selfloop transitions, 33 changer transitions 0/192 dead transitions. [2024-06-28 01:28:42,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 192 transitions, 2535 flow [2024-06-28 01:28:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 01:28:42,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-28 01:28:42,578 INFO L175 Difference]: Start difference. First operand has 113 places, 167 transitions, 1975 flow. Second operand 7 states and 116 transitions. [2024-06-28 01:28:42,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 192 transitions, 2535 flow [2024-06-28 01:28:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 192 transitions, 2443 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:42,605 INFO L231 Difference]: Finished difference. Result has 117 places, 168 transitions, 1966 flow [2024-06-28 01:28:42,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1966, PETRI_PLACES=117, PETRI_TRANSITIONS=168} [2024-06-28 01:28:42,606 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 77 predicate places. [2024-06-28 01:28:42,606 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 168 transitions, 1966 flow [2024-06-28 01:28:42,607 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 01:28:42,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:42,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:42,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:28:42,609 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 01:28:42,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:42,610 INFO L85 PathProgramCache]: Analyzing trace with hash -549721735, now seen corresponding path program 6 times [2024-06-28 01:28:42,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:42,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29147056] [2024-06-28 01:28:42,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:42,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:43,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:43,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29147056] [2024-06-28 01:28:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29147056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:43,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:43,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:28:43,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714721764] [2024-06-28 01:28:43,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:43,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:28:43,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:43,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:28:43,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:28:43,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:43,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 168 transitions, 1966 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 01:28:43,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:43,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:43,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:43,468 INFO L124 PetriNetUnfolderBase]: 858/1531 cut-off events. [2024-06-28 01:28:43,468 INFO L125 PetriNetUnfolderBase]: For 15203/15203 co-relation queries the response was YES. [2024-06-28 01:28:43,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8459 conditions, 1531 events. 858/1531 cut-off events. For 15203/15203 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7995 event pairs, 166 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 8404. Up to 1054 conditions per place. [2024-06-28 01:28:43,478 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 118 selfloop transitions, 79 changer transitions 0/203 dead transitions. [2024-06-28 01:28:43,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 203 transitions, 2710 flow [2024-06-28 01:28:43,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:28:43,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:28:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-28 01:28:43,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-28 01:28:43,480 INFO L175 Difference]: Start difference. First operand has 117 places, 168 transitions, 1966 flow. Second operand 7 states and 120 transitions. [2024-06-28 01:28:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 203 transitions, 2710 flow [2024-06-28 01:28:43,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 203 transitions, 2627 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:43,512 INFO L231 Difference]: Finished difference. Result has 121 places, 181 transitions, 2322 flow [2024-06-28 01:28:43,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2322, PETRI_PLACES=121, PETRI_TRANSITIONS=181} [2024-06-28 01:28:43,512 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2024-06-28 01:28:43,513 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 181 transitions, 2322 flow [2024-06-28 01:28:43,513 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 01:28:43,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:43,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:43,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:28:43,513 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 01:28:43,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -549444688, now seen corresponding path program 1 times [2024-06-28 01:28:43,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:43,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296836438] [2024-06-28 01:28:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:43,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:44,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:44,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:44,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296836438] [2024-06-28 01:28:44,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296836438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:44,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:44,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:44,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818518990] [2024-06-28 01:28:44,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:44,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:44,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:44,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:44,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:44,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 181 transitions, 2322 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 01:28:44,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:44,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:44,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:44,888 INFO L124 PetriNetUnfolderBase]: 861/1551 cut-off events. [2024-06-28 01:28:44,889 INFO L125 PetriNetUnfolderBase]: For 18063/18063 co-relation queries the response was YES. [2024-06-28 01:28:44,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9070 conditions, 1551 events. 861/1551 cut-off events. For 18063/18063 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8262 event pairs, 282 based on Foata normal form. 1/1502 useless extension candidates. Maximal degree in co-relation 9012. Up to 1330 conditions per place. [2024-06-28 01:28:44,898 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 185 selfloop transitions, 19 changer transitions 0/210 dead transitions. [2024-06-28 01:28:44,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 210 transitions, 2913 flow [2024-06-28 01:28:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:28:44,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-28 01:28:44,899 INFO L175 Difference]: Start difference. First operand has 121 places, 181 transitions, 2322 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:28:44,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 210 transitions, 2913 flow [2024-06-28 01:28:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 210 transitions, 2781 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:44,930 INFO L231 Difference]: Finished difference. Result has 127 places, 184 transitions, 2278 flow [2024-06-28 01:28:44,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2192, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2278, PETRI_PLACES=127, PETRI_TRANSITIONS=184} [2024-06-28 01:28:44,931 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 87 predicate places. [2024-06-28 01:28:44,931 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 184 transitions, 2278 flow [2024-06-28 01:28:44,931 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 01:28:44,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:44,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:44,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:28:44,931 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 01:28:44,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:44,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1884975028, now seen corresponding path program 1 times [2024-06-28 01:28:44,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:44,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472293981] [2024-06-28 01:28:44,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:44,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:45,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472293981] [2024-06-28 01:28:45,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472293981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:45,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:45,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:45,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537177765] [2024-06-28 01:28:45,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:45,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:45,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:45,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:45,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:45,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:45,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 184 transitions, 2278 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 01:28:45,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:45,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:45,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:45,896 INFO L124 PetriNetUnfolderBase]: 890/1590 cut-off events. [2024-06-28 01:28:45,896 INFO L125 PetriNetUnfolderBase]: For 17888/17888 co-relation queries the response was YES. [2024-06-28 01:28:45,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9481 conditions, 1590 events. 890/1590 cut-off events. For 17888/17888 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8401 event pairs, 235 based on Foata normal form. 1/1543 useless extension candidates. Maximal degree in co-relation 9421. Up to 1262 conditions per place. [2024-06-28 01:28:45,908 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 139 selfloop transitions, 82 changer transitions 0/227 dead transitions. [2024-06-28 01:28:45,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 227 transitions, 3086 flow [2024-06-28 01:28:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:45,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:28:45,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:28:45,910 INFO L175 Difference]: Start difference. First operand has 127 places, 184 transitions, 2278 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:28:45,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 227 transitions, 3086 flow [2024-06-28 01:28:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 227 transitions, 2992 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:45,947 INFO L231 Difference]: Finished difference. Result has 131 places, 203 transitions, 2697 flow [2024-06-28 01:28:45,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2697, PETRI_PLACES=131, PETRI_TRANSITIONS=203} [2024-06-28 01:28:45,947 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2024-06-28 01:28:45,947 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 203 transitions, 2697 flow [2024-06-28 01:28:45,948 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 01:28:45,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:45,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:45,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:28:45,948 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 01:28:45,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:45,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1546108486, now seen corresponding path program 1 times [2024-06-28 01:28:45,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:45,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075954101] [2024-06-28 01:28:45,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:45,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:45,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:46,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:46,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075954101] [2024-06-28 01:28:46,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075954101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:46,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:46,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:46,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303193643] [2024-06-28 01:28:46,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:46,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:46,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:46,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:46,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:46,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 203 transitions, 2697 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 01:28:46,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:46,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:46,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:47,061 INFO L124 PetriNetUnfolderBase]: 925/1635 cut-off events. [2024-06-28 01:28:47,061 INFO L125 PetriNetUnfolderBase]: For 20566/20566 co-relation queries the response was YES. [2024-06-28 01:28:47,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10205 conditions, 1635 events. 925/1635 cut-off events. For 20566/20566 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8559 event pairs, 183 based on Foata normal form. 2/1590 useless extension candidates. Maximal degree in co-relation 10142. Up to 1245 conditions per place. [2024-06-28 01:28:47,071 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 159 selfloop transitions, 81 changer transitions 0/246 dead transitions. [2024-06-28 01:28:47,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 246 transitions, 3455 flow [2024-06-28 01:28:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-28 01:28:47,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-28 01:28:47,073 INFO L175 Difference]: Start difference. First operand has 131 places, 203 transitions, 2697 flow. Second operand 9 states and 157 transitions. [2024-06-28 01:28:47,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 246 transitions, 3455 flow [2024-06-28 01:28:47,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 246 transitions, 3360 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:47,114 INFO L231 Difference]: Finished difference. Result has 139 places, 212 transitions, 2944 flow [2024-06-28 01:28:47,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2944, PETRI_PLACES=139, PETRI_TRANSITIONS=212} [2024-06-28 01:28:47,114 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 99 predicate places. [2024-06-28 01:28:47,114 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 212 transitions, 2944 flow [2024-06-28 01:28:47,115 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 01:28:47,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:47,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:28:47,115 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 01:28:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1796544734, now seen corresponding path program 2 times [2024-06-28 01:28:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982848149] [2024-06-28 01:28:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:47,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:47,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:47,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:47,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982848149] [2024-06-28 01:28:47,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982848149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:47,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:47,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:47,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002808485] [2024-06-28 01:28:47,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:47,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:47,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:47,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:47,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:47,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:47,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 212 transitions, 2944 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 01:28:47,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:47,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:47,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:48,232 INFO L124 PetriNetUnfolderBase]: 945/1671 cut-off events. [2024-06-28 01:28:48,232 INFO L125 PetriNetUnfolderBase]: For 23860/23860 co-relation queries the response was YES. [2024-06-28 01:28:48,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10885 conditions, 1671 events. 945/1671 cut-off events. For 23860/23860 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8810 event pairs, 217 based on Foata normal form. 1/1623 useless extension candidates. Maximal degree in co-relation 10819. Up to 1330 conditions per place. [2024-06-28 01:28:48,242 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 164 selfloop transitions, 82 changer transitions 0/252 dead transitions. [2024-06-28 01:28:48,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 252 transitions, 3820 flow [2024-06-28 01:28:48,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:28:48,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-28 01:28:48,246 INFO L175 Difference]: Start difference. First operand has 139 places, 212 transitions, 2944 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:28:48,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 252 transitions, 3820 flow [2024-06-28 01:28:48,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 252 transitions, 3694 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-28 01:28:48,291 INFO L231 Difference]: Finished difference. Result has 144 places, 226 transitions, 3267 flow [2024-06-28 01:28:48,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2830, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3267, PETRI_PLACES=144, PETRI_TRANSITIONS=226} [2024-06-28 01:28:48,292 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 104 predicate places. [2024-06-28 01:28:48,292 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 226 transitions, 3267 flow [2024-06-28 01:28:48,292 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 01:28:48,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:48,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:48,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:28:48,292 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 01:28:48,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:48,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1689205808, now seen corresponding path program 2 times [2024-06-28 01:28:48,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:48,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857636565] [2024-06-28 01:28:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:48,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:48,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857636565] [2024-06-28 01:28:48,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857636565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:48,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:48,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:48,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688754318] [2024-06-28 01:28:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:48,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:48,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:48,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:48,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:48,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 226 transitions, 3267 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 01:28:48,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:48,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:48,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:49,382 INFO L124 PetriNetUnfolderBase]: 1013/1800 cut-off events. [2024-06-28 01:28:49,383 INFO L125 PetriNetUnfolderBase]: For 26170/26170 co-relation queries the response was YES. [2024-06-28 01:28:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11623 conditions, 1800 events. 1013/1800 cut-off events. For 26170/26170 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9728 event pairs, 223 based on Foata normal form. 2/1746 useless extension candidates. Maximal degree in co-relation 11555. Up to 1342 conditions per place. [2024-06-28 01:28:49,394 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 183 selfloop transitions, 88 changer transitions 0/277 dead transitions. [2024-06-28 01:28:49,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 277 transitions, 4159 flow [2024-06-28 01:28:49,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:28:49,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:28:49,396 INFO L175 Difference]: Start difference. First operand has 144 places, 226 transitions, 3267 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:28:49,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 277 transitions, 4159 flow [2024-06-28 01:28:49,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 277 transitions, 4047 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:49,443 INFO L231 Difference]: Finished difference. Result has 152 places, 242 transitions, 3628 flow [2024-06-28 01:28:49,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3628, PETRI_PLACES=152, PETRI_TRANSITIONS=242} [2024-06-28 01:28:49,444 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 112 predicate places. [2024-06-28 01:28:49,444 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 242 transitions, 3628 flow [2024-06-28 01:28:49,444 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 01:28:49,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:49,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:49,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:28:49,446 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 01:28:49,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:49,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1794826272, now seen corresponding path program 3 times [2024-06-28 01:28:49,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:49,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639025439] [2024-06-28 01:28:49,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:49,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:50,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639025439] [2024-06-28 01:28:50,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639025439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:50,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607747886] [2024-06-28 01:28:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:50,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:50,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:50,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:50,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 242 transitions, 3628 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 01:28:50,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:50,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:50,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:50,591 INFO L124 PetriNetUnfolderBase]: 1054/1898 cut-off events. [2024-06-28 01:28:50,591 INFO L125 PetriNetUnfolderBase]: For 28791/28791 co-relation queries the response was YES. [2024-06-28 01:28:50,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12453 conditions, 1898 events. 1054/1898 cut-off events. For 28791/28791 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 10617 event pairs, 208 based on Foata normal form. 2/1832 useless extension candidates. Maximal degree in co-relation 12381. Up to 1294 conditions per place. [2024-06-28 01:28:50,607 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 180 selfloop transitions, 101 changer transitions 0/287 dead transitions. [2024-06-28 01:28:50,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 287 transitions, 4547 flow [2024-06-28 01:28:50,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:50,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:28:50,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:28:50,609 INFO L175 Difference]: Start difference. First operand has 152 places, 242 transitions, 3628 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:28:50,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 287 transitions, 4547 flow [2024-06-28 01:28:50,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 287 transitions, 4487 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-28 01:28:50,667 INFO L231 Difference]: Finished difference. Result has 160 places, 250 transitions, 4004 flow [2024-06-28 01:28:50,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4004, PETRI_PLACES=160, PETRI_TRANSITIONS=250} [2024-06-28 01:28:50,668 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-28 01:28:50,668 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 250 transitions, 4004 flow [2024-06-28 01:28:50,668 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 01:28:50,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:50,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:50,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:28:50,668 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 01:28:50,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:50,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1794833030, now seen corresponding path program 1 times [2024-06-28 01:28:50,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:50,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326812149] [2024-06-28 01:28:50,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:50,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:51,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:51,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:51,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326812149] [2024-06-28 01:28:51,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326812149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:51,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:51,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:51,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628301994] [2024-06-28 01:28:51,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:51,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:51,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:51,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:51,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:51,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:51,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 250 transitions, 4004 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 01:28:51,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:51,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:51,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:51,691 INFO L124 PetriNetUnfolderBase]: 1080/1922 cut-off events. [2024-06-28 01:28:51,691 INFO L125 PetriNetUnfolderBase]: For 34283/34283 co-relation queries the response was YES. [2024-06-28 01:28:51,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13302 conditions, 1922 events. 1080/1922 cut-off events. For 34283/34283 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10663 event pairs, 315 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 13227. Up to 1643 conditions per place. [2024-06-28 01:28:51,703 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 245 selfloop transitions, 32 changer transitions 0/283 dead transitions. [2024-06-28 01:28:51,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 283 transitions, 4781 flow [2024-06-28 01:28:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:28:51,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:28:51,704 INFO L175 Difference]: Start difference. First operand has 160 places, 250 transitions, 4004 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:28:51,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 283 transitions, 4781 flow [2024-06-28 01:28:51,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 283 transitions, 4610 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:51,768 INFO L231 Difference]: Finished difference. Result has 165 places, 253 transitions, 3965 flow [2024-06-28 01:28:51,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3965, PETRI_PLACES=165, PETRI_TRANSITIONS=253} [2024-06-28 01:28:51,769 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 125 predicate places. [2024-06-28 01:28:51,769 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 253 transitions, 3965 flow [2024-06-28 01:28:51,769 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 01:28:51,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:51,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:28:51,769 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 01:28:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1794832782, now seen corresponding path program 4 times [2024-06-28 01:28:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:51,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682998942] [2024-06-28 01:28:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:52,360 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 01:28:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:52,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682998942] [2024-06-28 01:28:52,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682998942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:52,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:52,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612122237] [2024-06-28 01:28:52,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:52,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:52,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:52,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:52,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:52,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:52,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 253 transitions, 3965 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 01:28:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:52,896 INFO L124 PetriNetUnfolderBase]: 1106/1971 cut-off events. [2024-06-28 01:28:52,896 INFO L125 PetriNetUnfolderBase]: For 34219/34219 co-relation queries the response was YES. [2024-06-28 01:28:52,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13590 conditions, 1971 events. 1106/1971 cut-off events. For 34219/34219 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10993 event pairs, 322 based on Foata normal form. 2/1911 useless extension candidates. Maximal degree in co-relation 13513. Up to 1683 conditions per place. [2024-06-28 01:28:52,908 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 248 selfloop transitions, 32 changer transitions 0/286 dead transitions. [2024-06-28 01:28:52,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 286 transitions, 4760 flow [2024-06-28 01:28:52,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:28:52,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:28:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:28:52,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-28 01:28:52,909 INFO L175 Difference]: Start difference. First operand has 165 places, 253 transitions, 3965 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:28:52,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 286 transitions, 4760 flow [2024-06-28 01:28:52,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 286 transitions, 4668 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:28:52,973 INFO L231 Difference]: Finished difference. Result has 169 places, 256 transitions, 4013 flow [2024-06-28 01:28:52,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3873, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4013, PETRI_PLACES=169, PETRI_TRANSITIONS=256} [2024-06-28 01:28:52,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 129 predicate places. [2024-06-28 01:28:52,974 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 256 transitions, 4013 flow [2024-06-28 01:28:52,974 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 01:28:52,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:52,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:52,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:28:52,974 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 01:28:52,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:52,974 INFO L85 PathProgramCache]: Analyzing trace with hash 605878326, now seen corresponding path program 3 times [2024-06-28 01:28:52,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:52,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718196415] [2024-06-28 01:28:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:52,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:53,611 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 01:28:53,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718196415] [2024-06-28 01:28:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718196415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632431860] [2024-06-28 01:28:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:53,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:53,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:53,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 256 transitions, 4013 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 01:28:53,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:53,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:53,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:54,212 INFO L124 PetriNetUnfolderBase]: 1122/1981 cut-off events. [2024-06-28 01:28:54,212 INFO L125 PetriNetUnfolderBase]: For 34035/34035 co-relation queries the response was YES. [2024-06-28 01:28:54,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13852 conditions, 1981 events. 1122/1981 cut-off events. For 34035/34035 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10994 event pairs, 236 based on Foata normal form. 1/1918 useless extension candidates. Maximal degree in co-relation 13774. Up to 1601 conditions per place. [2024-06-28 01:28:54,225 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 196 selfloop transitions, 85 changer transitions 0/287 dead transitions. [2024-06-28 01:28:54,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 287 transitions, 4922 flow [2024-06-28 01:28:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:54,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:28:54,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:28:54,226 INFO L175 Difference]: Start difference. First operand has 169 places, 256 transitions, 4013 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:28:54,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 287 transitions, 4922 flow [2024-06-28 01:28:54,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 287 transitions, 4766 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 01:28:54,288 INFO L231 Difference]: Finished difference. Result has 170 places, 267 transitions, 4320 flow [2024-06-28 01:28:54,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3867, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4320, PETRI_PLACES=170, PETRI_TRANSITIONS=267} [2024-06-28 01:28:54,289 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-28 01:28:54,289 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 267 transitions, 4320 flow [2024-06-28 01:28:54,289 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 01:28:54,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:54,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:54,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:28:54,289 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 01:28:54,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1086385820, now seen corresponding path program 5 times [2024-06-28 01:28:54,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:54,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132379631] [2024-06-28 01:28:54,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:54,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:54,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132379631] [2024-06-28 01:28:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132379631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:54,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904420290] [2024-06-28 01:28:54,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:54,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:54,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:54,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:54,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:54,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 267 transitions, 4320 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 01:28:54,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:54,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:54,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:55,406 INFO L124 PetriNetUnfolderBase]: 1154/2032 cut-off events. [2024-06-28 01:28:55,406 INFO L125 PetriNetUnfolderBase]: For 36183/36183 co-relation queries the response was YES. [2024-06-28 01:28:55,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14298 conditions, 2032 events. 1154/2032 cut-off events. For 36183/36183 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11291 event pairs, 205 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 14219. Up to 1433 conditions per place. [2024-06-28 01:28:55,418 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 186 selfloop transitions, 111 changer transitions 0/303 dead transitions. [2024-06-28 01:28:55,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 303 transitions, 5182 flow [2024-06-28 01:28:55,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:55,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-28 01:28:55,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-28 01:28:55,419 INFO L175 Difference]: Start difference. First operand has 170 places, 267 transitions, 4320 flow. Second operand 8 states and 142 transitions. [2024-06-28 01:28:55,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 303 transitions, 5182 flow [2024-06-28 01:28:55,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 303 transitions, 5068 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:55,490 INFO L231 Difference]: Finished difference. Result has 175 places, 272 transitions, 4602 flow [2024-06-28 01:28:55,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4206, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4602, PETRI_PLACES=175, PETRI_TRANSITIONS=272} [2024-06-28 01:28:55,490 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 135 predicate places. [2024-06-28 01:28:55,490 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 272 transitions, 4602 flow [2024-06-28 01:28:55,490 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 01:28:55,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:55,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:55,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:28:55,491 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 01:28:55,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 649110950, now seen corresponding path program 2 times [2024-06-28 01:28:55,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:55,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146937557] [2024-06-28 01:28:55,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:55,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:56,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146937557] [2024-06-28 01:28:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146937557] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:56,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342848850] [2024-06-28 01:28:56,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:56,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:56,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:56,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 272 transitions, 4602 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 01:28:56,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:56,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:56,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:56,684 INFO L124 PetriNetUnfolderBase]: 1167/2071 cut-off events. [2024-06-28 01:28:56,685 INFO L125 PetriNetUnfolderBase]: For 40741/40741 co-relation queries the response was YES. [2024-06-28 01:28:56,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15001 conditions, 2071 events. 1167/2071 cut-off events. For 40741/40741 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11680 event pairs, 317 based on Foata normal form. 1/2008 useless extension candidates. Maximal degree in co-relation 14920. Up to 1755 conditions per place. [2024-06-28 01:28:56,700 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 259 selfloop transitions, 39 changer transitions 0/304 dead transitions. [2024-06-28 01:28:56,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 304 transitions, 5447 flow [2024-06-28 01:28:56,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:56,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:28:56,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:28:56,701 INFO L175 Difference]: Start difference. First operand has 175 places, 272 transitions, 4602 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:28:56,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 304 transitions, 5447 flow [2024-06-28 01:28:56,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 304 transitions, 5254 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:28:56,807 INFO L231 Difference]: Finished difference. Result has 179 places, 277 transitions, 4580 flow [2024-06-28 01:28:56,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4413, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4580, PETRI_PLACES=179, PETRI_TRANSITIONS=277} [2024-06-28 01:28:56,807 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 139 predicate places. [2024-06-28 01:28:56,808 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 277 transitions, 4580 flow [2024-06-28 01:28:56,808 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 01:28:56,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:56,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:56,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:28:56,808 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 01:28:56,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash 649110702, now seen corresponding path program 6 times [2024-06-28 01:28:56,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:56,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460367620] [2024-06-28 01:28:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460367620] [2024-06-28 01:28:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460367620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022793431] [2024-06-28 01:28:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:57,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:57,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:57,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 277 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 01:28:57,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:57,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:57,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:57,844 INFO L124 PetriNetUnfolderBase]: 1193/2111 cut-off events. [2024-06-28 01:28:57,844 INFO L125 PetriNetUnfolderBase]: For 39508/39508 co-relation queries the response was YES. [2024-06-28 01:28:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15190 conditions, 2111 events. 1193/2111 cut-off events. For 39508/39508 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11936 event pairs, 316 based on Foata normal form. 2/2049 useless extension candidates. Maximal degree in co-relation 15107. Up to 1771 conditions per place. [2024-06-28 01:28:57,859 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 262 selfloop transitions, 40 changer transitions 0/308 dead transitions. [2024-06-28 01:28:57,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 308 transitions, 5437 flow [2024-06-28 01:28:57,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:57,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:57,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:28:57,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:28:57,862 INFO L175 Difference]: Start difference. First operand has 179 places, 277 transitions, 4580 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:28:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 308 transitions, 5437 flow [2024-06-28 01:28:57,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 308 transitions, 5314 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:57,947 INFO L231 Difference]: Finished difference. Result has 181 places, 280 transitions, 4623 flow [2024-06-28 01:28:57,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4457, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4623, PETRI_PLACES=181, PETRI_TRANSITIONS=280} [2024-06-28 01:28:57,948 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 141 predicate places. [2024-06-28 01:28:57,948 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 280 transitions, 4623 flow [2024-06-28 01:28:57,949 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 01:28:57,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:57,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:57,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:28:57,949 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 01:28:57,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:57,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1086212840, now seen corresponding path program 7 times [2024-06-28 01:28:57,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:57,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601244575] [2024-06-28 01:28:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:57,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:58,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:58,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601244575] [2024-06-28 01:28:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601244575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:58,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:58,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:58,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929573502] [2024-06-28 01:28:58,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:58,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:58,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:58,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:58,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:58,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 280 transitions, 4623 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 01:28:58,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:58,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:58,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:28:59,124 INFO L124 PetriNetUnfolderBase]: 1269/2256 cut-off events. [2024-06-28 01:28:59,125 INFO L125 PetriNetUnfolderBase]: For 44736/44736 co-relation queries the response was YES. [2024-06-28 01:28:59,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16441 conditions, 2256 events. 1269/2256 cut-off events. For 44736/44736 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12977 event pairs, 228 based on Foata normal form. 2/2182 useless extension candidates. Maximal degree in co-relation 16357. Up to 1204 conditions per place. [2024-06-28 01:28:59,142 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 204 selfloop transitions, 114 changer transitions 0/324 dead transitions. [2024-06-28 01:28:59,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 324 transitions, 5789 flow [2024-06-28 01:28:59,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:28:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:28:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:28:59,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:28:59,143 INFO L175 Difference]: Start difference. First operand has 181 places, 280 transitions, 4623 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:28:59,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 324 transitions, 5789 flow [2024-06-28 01:28:59,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 324 transitions, 5629 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-28 01:28:59,234 INFO L231 Difference]: Finished difference. Result has 185 places, 289 transitions, 5024 flow [2024-06-28 01:28:59,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4483, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5024, PETRI_PLACES=185, PETRI_TRANSITIONS=289} [2024-06-28 01:28:59,235 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 145 predicate places. [2024-06-28 01:28:59,235 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 289 transitions, 5024 flow [2024-06-28 01:28:59,235 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 01:28:59,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:28:59,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:28:59,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:28:59,236 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 01:28:59,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:28:59,236 INFO L85 PathProgramCache]: Analyzing trace with hash 147073982, now seen corresponding path program 3 times [2024-06-28 01:28:59,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:28:59,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371163081] [2024-06-28 01:28:59,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:28:59,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:28:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:28:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:28:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:28:59,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371163081] [2024-06-28 01:28:59,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371163081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:28:59,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:28:59,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:28:59,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897759955] [2024-06-28 01:28:59,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:28:59,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:28:59,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:28:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:28:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:28:59,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:28:59,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 289 transitions, 5024 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 01:28:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:28:59,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:28:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:00,406 INFO L124 PetriNetUnfolderBase]: 1282/2278 cut-off events. [2024-06-28 01:29:00,406 INFO L125 PetriNetUnfolderBase]: For 49298/49298 co-relation queries the response was YES. [2024-06-28 01:29:00,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17179 conditions, 2278 events. 1282/2278 cut-off events. For 49298/49298 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 13175 event pairs, 404 based on Foata normal form. 1/2206 useless extension candidates. Maximal degree in co-relation 17092. Up to 1986 conditions per place. [2024-06-28 01:29:00,426 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 293 selfloop transitions, 19 changer transitions 0/318 dead transitions. [2024-06-28 01:29:00,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 318 transitions, 5879 flow [2024-06-28 01:29:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:29:00,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-28 01:29:00,441 INFO L175 Difference]: Start difference. First operand has 185 places, 289 transitions, 5024 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:29:00,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 318 transitions, 5879 flow [2024-06-28 01:29:00,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 318 transitions, 5724 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:00,567 INFO L231 Difference]: Finished difference. Result has 190 places, 292 transitions, 4989 flow [2024-06-28 01:29:00,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4875, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4989, PETRI_PLACES=190, PETRI_TRANSITIONS=292} [2024-06-28 01:29:00,567 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 150 predicate places. [2024-06-28 01:29:00,568 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 292 transitions, 4989 flow [2024-06-28 01:29:00,568 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 01:29:00,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:00,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:00,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:29:00,568 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 01:29:00,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:00,569 INFO L85 PathProgramCache]: Analyzing trace with hash 146777312, now seen corresponding path program 4 times [2024-06-28 01:29:00,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:00,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365008992] [2024-06-28 01:29:00,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:00,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:00,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:01,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:01,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365008992] [2024-06-28 01:29:01,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365008992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:01,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:01,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:01,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911416277] [2024-06-28 01:29:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:01,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:01,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:01,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:01,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:01,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 292 transitions, 4989 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 01:29:01,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:01,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:01,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:01,672 INFO L124 PetriNetUnfolderBase]: 1300/2312 cut-off events. [2024-06-28 01:29:01,673 INFO L125 PetriNetUnfolderBase]: For 46806/46806 co-relation queries the response was YES. [2024-06-28 01:29:01,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17224 conditions, 2312 events. 1300/2312 cut-off events. For 46806/46806 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 13452 event pairs, 320 based on Foata normal form. 1/2237 useless extension candidates. Maximal degree in co-relation 17135. Up to 1855 conditions per place. [2024-06-28 01:29:01,692 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 262 selfloop transitions, 60 changer transitions 0/328 dead transitions. [2024-06-28 01:29:01,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 328 transitions, 6036 flow [2024-06-28 01:29:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:29:01,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:01,696 INFO L175 Difference]: Start difference. First operand has 190 places, 292 transitions, 4989 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:29:01,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 328 transitions, 6036 flow [2024-06-28 01:29:01,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 328 transitions, 5944 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:01,810 INFO L231 Difference]: Finished difference. Result has 192 places, 298 transitions, 5169 flow [2024-06-28 01:29:01,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4897, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5169, PETRI_PLACES=192, PETRI_TRANSITIONS=298} [2024-06-28 01:29:01,810 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 152 predicate places. [2024-06-28 01:29:01,810 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 298 transitions, 5169 flow [2024-06-28 01:29:01,811 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 01:29:01,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:01,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:29:01,811 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 01:29:01,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:01,811 INFO L85 PathProgramCache]: Analyzing trace with hash 146777064, now seen corresponding path program 8 times [2024-06-28 01:29:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:01,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500016476] [2024-06-28 01:29:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:01,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:02,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:02,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:02,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500016476] [2024-06-28 01:29:02,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500016476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:02,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:02,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:02,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892745602] [2024-06-28 01:29:02,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:02,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:02,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 298 transitions, 5169 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 01:29:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:02,946 INFO L124 PetriNetUnfolderBase]: 1356/2404 cut-off events. [2024-06-28 01:29:02,946 INFO L125 PetriNetUnfolderBase]: For 52036/52036 co-relation queries the response was YES. [2024-06-28 01:29:02,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18172 conditions, 2404 events. 1356/2404 cut-off events. For 52036/52036 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14080 event pairs, 325 based on Foata normal form. 2/2328 useless extension candidates. Maximal degree in co-relation 18082. Up to 1915 conditions per place. [2024-06-28 01:29:02,963 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 274 selfloop transitions, 56 changer transitions 0/336 dead transitions. [2024-06-28 01:29:02,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 336 transitions, 6262 flow [2024-06-28 01:29:02,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:02,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:29:02,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-28 01:29:02,965 INFO L175 Difference]: Start difference. First operand has 192 places, 298 transitions, 5169 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:29:02,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 336 transitions, 6262 flow [2024-06-28 01:29:03,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 336 transitions, 6141 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:03,083 INFO L231 Difference]: Finished difference. Result has 196 places, 304 transitions, 5324 flow [2024-06-28 01:29:03,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5052, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5324, PETRI_PLACES=196, PETRI_TRANSITIONS=304} [2024-06-28 01:29:03,084 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 156 predicate places. [2024-06-28 01:29:03,084 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 304 transitions, 5324 flow [2024-06-28 01:29:03,084 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 01:29:03,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:03,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:03,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:29:03,085 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 01:29:03,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 138496344, now seen corresponding path program 9 times [2024-06-28 01:29:03,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:03,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499908612] [2024-06-28 01:29:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:03,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:03,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:03,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499908612] [2024-06-28 01:29:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499908612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:03,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:03,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:03,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21744477] [2024-06-28 01:29:03,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:03,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:03,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:03,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:03,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:03,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:03,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 304 transitions, 5324 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 01:29:03,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:03,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:03,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:04,366 INFO L124 PetriNetUnfolderBase]: 1368/2386 cut-off events. [2024-06-28 01:29:04,366 INFO L125 PetriNetUnfolderBase]: For 52506/52506 co-relation queries the response was YES. [2024-06-28 01:29:04,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18482 conditions, 2386 events. 1368/2386 cut-off events. For 52506/52506 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13677 event pairs, 243 based on Foata normal form. 2/2317 useless extension candidates. Maximal degree in co-relation 18390. Up to 1142 conditions per place. [2024-06-28 01:29:04,382 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 226 selfloop transitions, 121 changer transitions 0/353 dead transitions. [2024-06-28 01:29:04,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 353 transitions, 6744 flow [2024-06-28 01:29:04,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-28 01:29:04,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-06-28 01:29:04,384 INFO L175 Difference]: Start difference. First operand has 196 places, 304 transitions, 5324 flow. Second operand 8 states and 147 transitions. [2024-06-28 01:29:04,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 353 transitions, 6744 flow [2024-06-28 01:29:04,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 353 transitions, 6625 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:04,508 INFO L231 Difference]: Finished difference. Result has 203 places, 315 transitions, 5820 flow [2024-06-28 01:29:04,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5205, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5820, PETRI_PLACES=203, PETRI_TRANSITIONS=315} [2024-06-28 01:29:04,509 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 163 predicate places. [2024-06-28 01:29:04,509 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 315 transitions, 5820 flow [2024-06-28 01:29:04,509 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 01:29:04,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:04,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:04,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:29:04,510 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 01:29:04,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:04,510 INFO L85 PathProgramCache]: Analyzing trace with hash 138503102, now seen corresponding path program 5 times [2024-06-28 01:29:04,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:04,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891543615] [2024-06-28 01:29:04,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:04,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:05,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:05,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:05,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891543615] [2024-06-28 01:29:05,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891543615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:05,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:05,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:05,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576207510] [2024-06-28 01:29:05,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:05,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:05,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:05,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:05,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 315 transitions, 5820 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 01:29:05,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:05,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:05,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:05,685 INFO L124 PetriNetUnfolderBase]: 1379/2480 cut-off events. [2024-06-28 01:29:05,685 INFO L125 PetriNetUnfolderBase]: For 57909/57909 co-relation queries the response was YES. [2024-06-28 01:29:05,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19683 conditions, 2480 events. 1379/2480 cut-off events. For 57909/57909 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14845 event pairs, 343 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 19586. Up to 2080 conditions per place. [2024-06-28 01:29:05,706 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 299 selfloop transitions, 42 changer transitions 0/347 dead transitions. [2024-06-28 01:29:05,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 347 transitions, 6783 flow [2024-06-28 01:29:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:29:05,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 01:29:05,724 INFO L175 Difference]: Start difference. First operand has 203 places, 315 transitions, 5820 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:29:05,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 347 transitions, 6783 flow [2024-06-28 01:29:05,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 347 transitions, 6580 flow, removed 77 selfloop flow, removed 2 redundant places. [2024-06-28 01:29:05,890 INFO L231 Difference]: Finished difference. Result has 209 places, 318 transitions, 5791 flow [2024-06-28 01:29:05,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5791, PETRI_PLACES=209, PETRI_TRANSITIONS=318} [2024-06-28 01:29:05,890 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 169 predicate places. [2024-06-28 01:29:05,890 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 318 transitions, 5791 flow [2024-06-28 01:29:05,890 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 01:29:05,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:05,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:05,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:29:05,891 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 01:29:05,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1651580200, now seen corresponding path program 10 times [2024-06-28 01:29:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:05,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906494768] [2024-06-28 01:29:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:05,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:06,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:06,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906494768] [2024-06-28 01:29:06,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906494768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:06,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:06,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869382475] [2024-06-28 01:29:06,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:06,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:06,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:06,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:06,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:06,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:06,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 318 transitions, 5791 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 01:29:06,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:06,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:06,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:07,198 INFO L124 PetriNetUnfolderBase]: 1375/2474 cut-off events. [2024-06-28 01:29:07,199 INFO L125 PetriNetUnfolderBase]: For 55224/55224 co-relation queries the response was YES. [2024-06-28 01:29:07,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19403 conditions, 2474 events. 1375/2474 cut-off events. For 55224/55224 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14824 event pairs, 341 based on Foata normal form. 2/2385 useless extension candidates. Maximal degree in co-relation 19304. Up to 2074 conditions per place. [2024-06-28 01:29:07,223 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 302 selfloop transitions, 40 changer transitions 0/348 dead transitions. [2024-06-28 01:29:07,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 348 transitions, 6688 flow [2024-06-28 01:29:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:07,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-28 01:29:07,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-28 01:29:07,224 INFO L175 Difference]: Start difference. First operand has 209 places, 318 transitions, 5791 flow. Second operand 8 states and 133 transitions. [2024-06-28 01:29:07,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 348 transitions, 6688 flow [2024-06-28 01:29:07,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 348 transitions, 6468 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:07,380 INFO L231 Difference]: Finished difference. Result has 210 places, 318 transitions, 5657 flow [2024-06-28 01:29:07,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5571, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5657, PETRI_PLACES=210, PETRI_TRANSITIONS=318} [2024-06-28 01:29:07,383 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2024-06-28 01:29:07,383 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 318 transitions, 5657 flow [2024-06-28 01:29:07,383 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 01:29:07,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:07,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:07,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:29:07,384 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 01:29:07,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:07,384 INFO L85 PathProgramCache]: Analyzing trace with hash 147084894, now seen corresponding path program 1 times [2024-06-28 01:29:07,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:07,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061165804] [2024-06-28 01:29:07,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:07,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:08,352 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 01:29:08,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:08,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061165804] [2024-06-28 01:29:08,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061165804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:08,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:08,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:08,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349015414] [2024-06-28 01:29:08,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:08,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:08,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:08,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:08,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:08,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 318 transitions, 5657 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 01:29:08,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:08,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:08,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:09,008 INFO L124 PetriNetUnfolderBase]: 1379/2443 cut-off events. [2024-06-28 01:29:09,009 INFO L125 PetriNetUnfolderBase]: For 54803/54803 co-relation queries the response was YES. [2024-06-28 01:29:09,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19132 conditions, 2443 events. 1379/2443 cut-off events. For 54803/54803 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14293 event pairs, 419 based on Foata normal form. 2/2368 useless extension candidates. Maximal degree in co-relation 19033. Up to 2115 conditions per place. [2024-06-28 01:29:09,029 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 321 selfloop transitions, 20 changer transitions 0/347 dead transitions. [2024-06-28 01:29:09,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 347 transitions, 6558 flow [2024-06-28 01:29:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:09,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-28 01:29:09,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-28 01:29:09,031 INFO L175 Difference]: Start difference. First operand has 210 places, 318 transitions, 5657 flow. Second operand 8 states and 131 transitions. [2024-06-28 01:29:09,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 347 transitions, 6558 flow [2024-06-28 01:29:09,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 347 transitions, 6440 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:09,176 INFO L231 Difference]: Finished difference. Result has 211 places, 320 transitions, 5644 flow [2024-06-28 01:29:09,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5539, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5644, PETRI_PLACES=211, PETRI_TRANSITIONS=320} [2024-06-28 01:29:09,176 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2024-06-28 01:29:09,176 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 320 transitions, 5644 flow [2024-06-28 01:29:09,177 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 01:29:09,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:09,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:09,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:29:09,177 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 01:29:09,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2050999916, now seen corresponding path program 1 times [2024-06-28 01:29:09,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:09,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173376127] [2024-06-28 01:29:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:09,684 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 01:29:09,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:09,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173376127] [2024-06-28 01:29:09,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173376127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:09,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:09,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:09,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267460942] [2024-06-28 01:29:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:09,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:09,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:09,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:09,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:09,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:09,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 320 transitions, 5644 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 01:29:09,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:09,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:09,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:10,404 INFO L124 PetriNetUnfolderBase]: 1410/2480 cut-off events. [2024-06-28 01:29:10,404 INFO L125 PetriNetUnfolderBase]: For 56526/56526 co-relation queries the response was YES. [2024-06-28 01:29:10,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19421 conditions, 2480 events. 1410/2480 cut-off events. For 56526/56526 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14360 event pairs, 296 based on Foata normal form. 2/2411 useless extension candidates. Maximal degree in co-relation 19321. Up to 2041 conditions per place. [2024-06-28 01:29:10,424 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 270 selfloop transitions, 81 changer transitions 0/357 dead transitions. [2024-06-28 01:29:10,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 357 transitions, 6600 flow [2024-06-28 01:29:10,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:10,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:10,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:29:10,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:29:10,426 INFO L175 Difference]: Start difference. First operand has 211 places, 320 transitions, 5644 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:29:10,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 357 transitions, 6600 flow [2024-06-28 01:29:10,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 357 transitions, 6511 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:10,574 INFO L231 Difference]: Finished difference. Result has 216 places, 328 transitions, 5880 flow [2024-06-28 01:29:10,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5555, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5880, PETRI_PLACES=216, PETRI_TRANSITIONS=328} [2024-06-28 01:29:10,574 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2024-06-28 01:29:10,574 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 328 transitions, 5880 flow [2024-06-28 01:29:10,575 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 01:29:10,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:10,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:10,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:29:10,575 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 01:29:10,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:10,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1693422656, now seen corresponding path program 2 times [2024-06-28 01:29:10,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:10,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521021664] [2024-06-28 01:29:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:10,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:11,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:11,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:11,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521021664] [2024-06-28 01:29:11,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521021664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:11,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:11,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:11,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704106772] [2024-06-28 01:29:11,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:11,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:11,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:11,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:11,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:11,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:11,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 328 transitions, 5880 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 01:29:11,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:11,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:11,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:11,876 INFO L124 PetriNetUnfolderBase]: 1453/2556 cut-off events. [2024-06-28 01:29:11,876 INFO L125 PetriNetUnfolderBase]: For 63007/63007 co-relation queries the response was YES. [2024-06-28 01:29:11,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20448 conditions, 2556 events. 1453/2556 cut-off events. For 63007/63007 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 14983 event pairs, 374 based on Foata normal form. 2/2486 useless extension candidates. Maximal degree in co-relation 20345. Up to 2136 conditions per place. [2024-06-28 01:29:11,904 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 273 selfloop transitions, 86 changer transitions 0/365 dead transitions. [2024-06-28 01:29:11,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 365 transitions, 6953 flow [2024-06-28 01:29:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:11,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-28 01:29:11,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-06-28 01:29:11,906 INFO L175 Difference]: Start difference. First operand has 216 places, 328 transitions, 5880 flow. Second operand 9 states and 152 transitions. [2024-06-28 01:29:11,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 365 transitions, 6953 flow [2024-06-28 01:29:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 365 transitions, 6651 flow, removed 104 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:12,100 INFO L231 Difference]: Finished difference. Result has 221 places, 336 transitions, 6000 flow [2024-06-28 01:29:12,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5678, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6000, PETRI_PLACES=221, PETRI_TRANSITIONS=336} [2024-06-28 01:29:12,103 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 181 predicate places. [2024-06-28 01:29:12,103 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 336 transitions, 6000 flow [2024-06-28 01:29:12,104 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 01:29:12,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:12,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:29:12,110 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 01:29:12,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:12,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1695317066, now seen corresponding path program 3 times [2024-06-28 01:29:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:12,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449983553] [2024-06-28 01:29:12,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:12,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:12,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:12,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:12,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449983553] [2024-06-28 01:29:12,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449983553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:12,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:12,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:12,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647394373] [2024-06-28 01:29:12,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:12,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:12,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:12,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:12,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:12,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:12,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 336 transitions, 6000 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 01:29:12,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:12,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:12,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:13,465 INFO L124 PetriNetUnfolderBase]: 1468/2584 cut-off events. [2024-06-28 01:29:13,466 INFO L125 PetriNetUnfolderBase]: For 64337/64337 co-relation queries the response was YES. [2024-06-28 01:29:13,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20682 conditions, 2584 events. 1468/2584 cut-off events. For 64337/64337 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15200 event pairs, 349 based on Foata normal form. 2/2514 useless extension candidates. Maximal degree in co-relation 20577. Up to 2133 conditions per place. [2024-06-28 01:29:13,490 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 263 selfloop transitions, 98 changer transitions 0/367 dead transitions. [2024-06-28 01:29:13,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 367 transitions, 6968 flow [2024-06-28 01:29:13,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:13,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:13,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:13,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:13,492 INFO L175 Difference]: Start difference. First operand has 221 places, 336 transitions, 6000 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:13,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 367 transitions, 6968 flow [2024-06-28 01:29:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 367 transitions, 6808 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:13,679 INFO L231 Difference]: Finished difference. Result has 226 places, 338 transitions, 6132 flow [2024-06-28 01:29:13,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5840, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6132, PETRI_PLACES=226, PETRI_TRANSITIONS=338} [2024-06-28 01:29:13,679 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-28 01:29:13,680 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 338 transitions, 6132 flow [2024-06-28 01:29:13,680 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 01:29:13,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:13,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:13,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:29:13,680 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 01:29:13,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1695330241, now seen corresponding path program 1 times [2024-06-28 01:29:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114748972] [2024-06-28 01:29:13,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:14,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:14,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:14,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114748972] [2024-06-28 01:29:14,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114748972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:14,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:14,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:14,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852288433] [2024-06-28 01:29:14,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:14,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:14,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:14,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:14,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:14,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:14,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 338 transitions, 6132 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 01:29:14,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:14,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:14,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:14,952 INFO L124 PetriNetUnfolderBase]: 1490/2656 cut-off events. [2024-06-28 01:29:14,953 INFO L125 PetriNetUnfolderBase]: For 66659/66659 co-relation queries the response was YES. [2024-06-28 01:29:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21128 conditions, 2656 events. 1490/2656 cut-off events. For 66659/66659 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15906 event pairs, 337 based on Foata normal form. 1/2573 useless extension candidates. Maximal degree in co-relation 21022. Up to 2064 conditions per place. [2024-06-28 01:29:14,978 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 263 selfloop transitions, 112 changer transitions 0/381 dead transitions. [2024-06-28 01:29:14,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 381 transitions, 7271 flow [2024-06-28 01:29:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:14,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:29:14,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:29:14,980 INFO L175 Difference]: Start difference. First operand has 226 places, 338 transitions, 6132 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:29:14,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 381 transitions, 7271 flow [2024-06-28 01:29:15,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 381 transitions, 7005 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:15,174 INFO L231 Difference]: Finished difference. Result has 229 places, 347 transitions, 6353 flow [2024-06-28 01:29:15,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5866, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6353, PETRI_PLACES=229, PETRI_TRANSITIONS=347} [2024-06-28 01:29:15,174 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 189 predicate places. [2024-06-28 01:29:15,175 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 347 transitions, 6353 flow [2024-06-28 01:29:15,175 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 01:29:15,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:15,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:15,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:29:15,175 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 01:29:15,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -684707884, now seen corresponding path program 1 times [2024-06-28 01:29:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296367230] [2024-06-28 01:29:15,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:15,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:15,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:15,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296367230] [2024-06-28 01:29:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296367230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:15,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297440275] [2024-06-28 01:29:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:15,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:15,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:15,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:15,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 347 transitions, 6353 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 01:29:15,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:15,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:15,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:16,529 INFO L124 PetriNetUnfolderBase]: 1516/2694 cut-off events. [2024-06-28 01:29:16,530 INFO L125 PetriNetUnfolderBase]: For 69661/69661 co-relation queries the response was YES. [2024-06-28 01:29:16,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21557 conditions, 2694 events. 1516/2694 cut-off events. For 69661/69661 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 16171 event pairs, 294 based on Foata normal form. 2/2611 useless extension candidates. Maximal degree in co-relation 21449. Up to 2101 conditions per place. [2024-06-28 01:29:16,552 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 279 selfloop transitions, 105 changer transitions 0/390 dead transitions. [2024-06-28 01:29:16,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 390 transitions, 7435 flow [2024-06-28 01:29:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-28 01:29:16,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-28 01:29:16,554 INFO L175 Difference]: Start difference. First operand has 229 places, 347 transitions, 6353 flow. Second operand 10 states and 174 transitions. [2024-06-28 01:29:16,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 390 transitions, 7435 flow [2024-06-28 01:29:16,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 390 transitions, 7263 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:16,747 INFO L231 Difference]: Finished difference. Result has 235 places, 350 transitions, 6492 flow [2024-06-28 01:29:16,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6181, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6492, PETRI_PLACES=235, PETRI_TRANSITIONS=350} [2024-06-28 01:29:16,748 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 195 predicate places. [2024-06-28 01:29:16,748 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 350 transitions, 6492 flow [2024-06-28 01:29:16,748 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 01:29:16,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:16,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:16,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:29:16,749 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 01:29:16,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:16,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1624762442, now seen corresponding path program 4 times [2024-06-28 01:29:16,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:16,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803885479] [2024-06-28 01:29:16,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:16,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:17,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:17,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803885479] [2024-06-28 01:29:17,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803885479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:17,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032701567] [2024-06-28 01:29:17,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:17,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:17,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:17,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:17,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 350 transitions, 6492 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 01:29:17,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:17,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:17,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:18,114 INFO L124 PetriNetUnfolderBase]: 1580/2767 cut-off events. [2024-06-28 01:29:18,115 INFO L125 PetriNetUnfolderBase]: For 76691/76691 co-relation queries the response was YES. [2024-06-28 01:29:18,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22325 conditions, 2767 events. 1580/2767 cut-off events. For 76691/76691 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16456 event pairs, 372 based on Foata normal form. 2/2696 useless extension candidates. Maximal degree in co-relation 22216. Up to 2319 conditions per place. [2024-06-28 01:29:18,144 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 308 selfloop transitions, 82 changer transitions 0/396 dead transitions. [2024-06-28 01:29:18,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 396 transitions, 7626 flow [2024-06-28 01:29:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:18,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:18,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:18,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:18,146 INFO L175 Difference]: Start difference. First operand has 235 places, 350 transitions, 6492 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:18,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 396 transitions, 7626 flow [2024-06-28 01:29:18,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 396 transitions, 7339 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:18,363 INFO L231 Difference]: Finished difference. Result has 237 places, 365 transitions, 6617 flow [2024-06-28 01:29:18,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6205, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6617, PETRI_PLACES=237, PETRI_TRANSITIONS=365} [2024-06-28 01:29:18,364 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-28 01:29:18,364 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 365 transitions, 6617 flow [2024-06-28 01:29:18,364 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 01:29:18,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:18,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:18,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:29:18,365 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 01:29:18,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:18,365 INFO L85 PathProgramCache]: Analyzing trace with hash -313975477, now seen corresponding path program 2 times [2024-06-28 01:29:18,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:18,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805224792] [2024-06-28 01:29:18,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:18,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:19,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:19,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805224792] [2024-06-28 01:29:19,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805224792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:19,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:19,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097877148] [2024-06-28 01:29:19,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:19,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:19,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:19,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:19,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 365 transitions, 6617 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 01:29:19,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:19,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:19,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:19,930 INFO L124 PetriNetUnfolderBase]: 1622/2876 cut-off events. [2024-06-28 01:29:19,930 INFO L125 PetriNetUnfolderBase]: For 78453/78453 co-relation queries the response was YES. [2024-06-28 01:29:19,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22999 conditions, 2876 events. 1622/2876 cut-off events. For 78453/78453 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17505 event pairs, 356 based on Foata normal form. 1/2790 useless extension candidates. Maximal degree in co-relation 22888. Up to 2238 conditions per place. [2024-06-28 01:29:19,959 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 307 selfloop transitions, 101 changer transitions 0/414 dead transitions. [2024-06-28 01:29:19,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 414 transitions, 7918 flow [2024-06-28 01:29:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:19,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-28 01:29:19,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-28 01:29:19,960 INFO L175 Difference]: Start difference. First operand has 237 places, 365 transitions, 6617 flow. Second operand 9 states and 160 transitions. [2024-06-28 01:29:19,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 414 transitions, 7918 flow [2024-06-28 01:29:20,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 414 transitions, 7745 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:20,213 INFO L231 Difference]: Finished difference. Result has 243 places, 377 transitions, 6998 flow [2024-06-28 01:29:20,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6444, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6998, PETRI_PLACES=243, PETRI_TRANSITIONS=377} [2024-06-28 01:29:20,213 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 203 predicate places. [2024-06-28 01:29:20,214 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 377 transitions, 6998 flow [2024-06-28 01:29:20,214 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 01:29:20,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:20,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:20,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:29:20,214 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 01:29:20,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:20,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1797110570, now seen corresponding path program 5 times [2024-06-28 01:29:20,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:20,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920337622] [2024-06-28 01:29:20,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:20,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:20,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920337622] [2024-06-28 01:29:20,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920337622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:20,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:20,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:20,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884829075] [2024-06-28 01:29:20,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:20,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:20,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:21,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:21,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 377 transitions, 6998 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 01:29:21,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:21,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:21,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:21,698 INFO L124 PetriNetUnfolderBase]: 1646/2877 cut-off events. [2024-06-28 01:29:21,698 INFO L125 PetriNetUnfolderBase]: For 84625/84625 co-relation queries the response was YES. [2024-06-28 01:29:21,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23548 conditions, 2877 events. 1646/2877 cut-off events. For 84625/84625 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 17247 event pairs, 378 based on Foata normal form. 2/2805 useless extension candidates. Maximal degree in co-relation 23435. Up to 2406 conditions per place. [2024-06-28 01:29:21,728 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 317 selfloop transitions, 89 changer transitions 0/412 dead transitions. [2024-06-28 01:29:21,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 412 transitions, 8104 flow [2024-06-28 01:29:21,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:21,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:21,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:21,730 INFO L175 Difference]: Start difference. First operand has 243 places, 377 transitions, 6998 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 412 transitions, 8104 flow [2024-06-28 01:29:22,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 412 transitions, 7924 flow, removed 41 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:22,047 INFO L231 Difference]: Finished difference. Result has 248 places, 381 transitions, 7120 flow [2024-06-28 01:29:22,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7120, PETRI_PLACES=248, PETRI_TRANSITIONS=381} [2024-06-28 01:29:22,048 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 208 predicate places. [2024-06-28 01:29:22,048 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 381 transitions, 7120 flow [2024-06-28 01:29:22,048 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 01:29:22,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:22,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:22,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:29:22,049 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 01:29:22,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash -311144340, now seen corresponding path program 2 times [2024-06-28 01:29:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230244453] [2024-06-28 01:29:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:22,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230244453] [2024-06-28 01:29:22,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230244453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:22,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:22,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:22,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840270753] [2024-06-28 01:29:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:22,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:22,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:22,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:22,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:22,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:22,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 381 transitions, 7120 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 01:29:22,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:22,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:22,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:23,605 INFO L124 PetriNetUnfolderBase]: 1690/2993 cut-off events. [2024-06-28 01:29:23,606 INFO L125 PetriNetUnfolderBase]: For 89898/89898 co-relation queries the response was YES. [2024-06-28 01:29:23,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24022 conditions, 2993 events. 1690/2993 cut-off events. For 89898/89898 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 18412 event pairs, 375 based on Foata normal form. 2/2905 useless extension candidates. Maximal degree in co-relation 23908. Up to 2365 conditions per place. [2024-06-28 01:29:23,634 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 322 selfloop transitions, 100 changer transitions 0/428 dead transitions. [2024-06-28 01:29:23,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 428 transitions, 8309 flow [2024-06-28 01:29:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:23,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:23,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-28 01:29:23,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-28 01:29:23,636 INFO L175 Difference]: Start difference. First operand has 248 places, 381 transitions, 7120 flow. Second operand 10 states and 176 transitions. [2024-06-28 01:29:23,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 428 transitions, 8309 flow [2024-06-28 01:29:23,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 428 transitions, 8051 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:23,922 INFO L231 Difference]: Finished difference. Result has 251 places, 387 transitions, 7196 flow [2024-06-28 01:29:23,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7196, PETRI_PLACES=251, PETRI_TRANSITIONS=387} [2024-06-28 01:29:23,923 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 211 predicate places. [2024-06-28 01:29:23,923 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 387 transitions, 7196 flow [2024-06-28 01:29:23,923 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 01:29:23,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:23,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:23,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:29:23,923 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 01:29:23,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:23,924 INFO L85 PathProgramCache]: Analyzing trace with hash -194965392, now seen corresponding path program 6 times [2024-06-28 01:29:23,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:23,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467567785] [2024-06-28 01:29:23,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:23,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:24,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:24,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467567785] [2024-06-28 01:29:24,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467567785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:24,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:24,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:24,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051078455] [2024-06-28 01:29:24,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:24,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:24,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:24,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 387 transitions, 7196 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 01:29:24,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:24,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:25,338 INFO L124 PetriNetUnfolderBase]: 1705/2982 cut-off events. [2024-06-28 01:29:25,338 INFO L125 PetriNetUnfolderBase]: For 91737/91737 co-relation queries the response was YES. [2024-06-28 01:29:25,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24381 conditions, 2982 events. 1705/2982 cut-off events. For 91737/91737 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18087 event pairs, 345 based on Foata normal form. 2/2905 useless extension candidates. Maximal degree in co-relation 24266. Up to 2443 conditions per place. [2024-06-28 01:29:25,368 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 305 selfloop transitions, 109 changer transitions 0/420 dead transitions. [2024-06-28 01:29:25,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 420 transitions, 8331 flow [2024-06-28 01:29:25,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:25,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:29:25,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:25,369 INFO L175 Difference]: Start difference. First operand has 251 places, 387 transitions, 7196 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:29:25,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 420 transitions, 8331 flow [2024-06-28 01:29:25,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 420 transitions, 8051 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:25,651 INFO L231 Difference]: Finished difference. Result has 252 places, 389 transitions, 7245 flow [2024-06-28 01:29:25,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6916, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7245, PETRI_PLACES=252, PETRI_TRANSITIONS=389} [2024-06-28 01:29:25,651 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 212 predicate places. [2024-06-28 01:29:25,651 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 389 transitions, 7245 flow [2024-06-28 01:29:25,651 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 01:29:25,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:25,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:25,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:29:25,652 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 01:29:25,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash -194959440, now seen corresponding path program 3 times [2024-06-28 01:29:25,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643578814] [2024-06-28 01:29:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643578814] [2024-06-28 01:29:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643578814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:26,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310496632] [2024-06-28 01:29:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:26,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:26,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 389 transitions, 7245 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 01:29:26,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:26,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:26,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:27,250 INFO L124 PetriNetUnfolderBase]: 1876/3328 cut-off events. [2024-06-28 01:29:27,251 INFO L125 PetriNetUnfolderBase]: For 112530/112530 co-relation queries the response was YES. [2024-06-28 01:29:27,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27246 conditions, 3328 events. 1876/3328 cut-off events. For 112530/112530 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 20920 event pairs, 396 based on Foata normal form. 2/3224 useless extension candidates. Maximal degree in co-relation 27130. Up to 1961 conditions per place. [2024-06-28 01:29:27,282 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 324 selfloop transitions, 122 changer transitions 0/452 dead transitions. [2024-06-28 01:29:27,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 452 transitions, 9080 flow [2024-06-28 01:29:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:29:27,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-06-28 01:29:27,283 INFO L175 Difference]: Start difference. First operand has 252 places, 389 transitions, 7245 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:29:27,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 452 transitions, 9080 flow [2024-06-28 01:29:27,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 452 transitions, 8767 flow, removed 49 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:27,633 INFO L231 Difference]: Finished difference. Result has 257 places, 401 transitions, 7594 flow [2024-06-28 01:29:27,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7594, PETRI_PLACES=257, PETRI_TRANSITIONS=401} [2024-06-28 01:29:27,634 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 217 predicate places. [2024-06-28 01:29:27,634 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 401 transitions, 7594 flow [2024-06-28 01:29:27,634 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 01:29:27,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:27,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:27,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:29:27,634 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 01:29:27,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:27,635 INFO L85 PathProgramCache]: Analyzing trace with hash -194757630, now seen corresponding path program 4 times [2024-06-28 01:29:27,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:27,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878174454] [2024-06-28 01:29:27,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:27,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:28,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:28,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:28,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878174454] [2024-06-28 01:29:28,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878174454] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:28,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:28,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714095708] [2024-06-28 01:29:28,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:28,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:28,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:28,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:28,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:28,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:28,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 401 transitions, 7594 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 01:29:28,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:28,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:28,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:29,192 INFO L124 PetriNetUnfolderBase]: 1952/3414 cut-off events. [2024-06-28 01:29:29,193 INFO L125 PetriNetUnfolderBase]: For 125342/125342 co-relation queries the response was YES. [2024-06-28 01:29:29,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29056 conditions, 3414 events. 1952/3414 cut-off events. For 125342/125342 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 21269 event pairs, 524 based on Foata normal form. 2/3323 useless extension candidates. Maximal degree in co-relation 28937. Up to 2868 conditions per place. [2024-06-28 01:29:29,230 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 399 selfloop transitions, 46 changer transitions 0/451 dead transitions. [2024-06-28 01:29:29,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 451 transitions, 9278 flow [2024-06-28 01:29:29,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:29,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:29:29,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-28 01:29:29,231 INFO L175 Difference]: Start difference. First operand has 257 places, 401 transitions, 7594 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:29:29,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 451 transitions, 9278 flow [2024-06-28 01:29:29,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 451 transitions, 9086 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:29,631 INFO L231 Difference]: Finished difference. Result has 264 places, 411 transitions, 7893 flow [2024-06-28 01:29:29,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7406, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7893, PETRI_PLACES=264, PETRI_TRANSITIONS=411} [2024-06-28 01:29:29,632 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-28 01:29:29,632 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 411 transitions, 7893 flow [2024-06-28 01:29:29,632 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 01:29:29,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:29,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:29,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:29:29,633 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 01:29:29,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash -194750190, now seen corresponding path program 5 times [2024-06-28 01:29:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107962044] [2024-06-28 01:29:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:30,250 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 01:29:30,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:30,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107962044] [2024-06-28 01:29:30,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107962044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:30,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:30,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:30,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208916304] [2024-06-28 01:29:30,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:30,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:30,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:30,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:30,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:30,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:30,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 411 transitions, 7893 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 01:29:30,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:30,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:30,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:31,218 INFO L124 PetriNetUnfolderBase]: 1944/3399 cut-off events. [2024-06-28 01:29:31,219 INFO L125 PetriNetUnfolderBase]: For 123753/123753 co-relation queries the response was YES. [2024-06-28 01:29:31,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28981 conditions, 3399 events. 1944/3399 cut-off events. For 123753/123753 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 21196 event pairs, 523 based on Foata normal form. 4/3311 useless extension candidates. Maximal degree in co-relation 28858. Up to 2864 conditions per place. [2024-06-28 01:29:31,256 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 399 selfloop transitions, 45 changer transitions 0/450 dead transitions. [2024-06-28 01:29:31,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 450 transitions, 9130 flow [2024-06-28 01:29:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:29:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:29:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-28 01:29:31,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:29:31,258 INFO L175 Difference]: Start difference. First operand has 264 places, 411 transitions, 7893 flow. Second operand 10 states and 170 transitions. [2024-06-28 01:29:31,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 450 transitions, 9130 flow [2024-06-28 01:29:31,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 450 transitions, 8875 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:31,679 INFO L231 Difference]: Finished difference. Result has 268 places, 411 transitions, 7736 flow [2024-06-28 01:29:31,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7638, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7736, PETRI_PLACES=268, PETRI_TRANSITIONS=411} [2024-06-28 01:29:31,680 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 228 predicate places. [2024-06-28 01:29:31,680 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 411 transitions, 7736 flow [2024-06-28 01:29:31,681 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 01:29:31,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:31,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:31,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:29:31,681 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 01:29:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash 568063732, now seen corresponding path program 7 times [2024-06-28 01:29:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950514461] [2024-06-28 01:29:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:32,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950514461] [2024-06-28 01:29:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950514461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:32,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:32,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065303183] [2024-06-28 01:29:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:32,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:32,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:32,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:32,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 411 transitions, 7736 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 01:29:32,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:32,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:32,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:33,148 INFO L124 PetriNetUnfolderBase]: 1962/3427 cut-off events. [2024-06-28 01:29:33,148 INFO L125 PetriNetUnfolderBase]: For 121021/121021 co-relation queries the response was YES. [2024-06-28 01:29:33,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28947 conditions, 3427 events. 1962/3427 cut-off events. For 121021/121021 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 21315 event pairs, 423 based on Foata normal form. 2/3337 useless extension candidates. Maximal degree in co-relation 28822. Up to 2773 conditions per place. [2024-06-28 01:29:33,186 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 336 selfloop transitions, 98 changer transitions 0/440 dead transitions. [2024-06-28 01:29:33,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 440 transitions, 8860 flow [2024-06-28 01:29:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:33,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-28 01:29:33,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-28 01:29:33,188 INFO L175 Difference]: Start difference. First operand has 268 places, 411 transitions, 7736 flow. Second operand 8 states and 134 transitions. [2024-06-28 01:29:33,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 440 transitions, 8860 flow [2024-06-28 01:29:33,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 440 transitions, 8763 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:29:33,630 INFO L231 Difference]: Finished difference. Result has 269 places, 415 transitions, 8026 flow [2024-06-28 01:29:33,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7639, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8026, PETRI_PLACES=269, PETRI_TRANSITIONS=415} [2024-06-28 01:29:33,630 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 229 predicate places. [2024-06-28 01:29:33,631 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 415 transitions, 8026 flow [2024-06-28 01:29:33,631 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 01:29:33,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:33,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:33,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:29:33,631 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 01:29:33,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:33,632 INFO L85 PathProgramCache]: Analyzing trace with hash 570806302, now seen corresponding path program 8 times [2024-06-28 01:29:33,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:33,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735445834] [2024-06-28 01:29:33,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:33,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:34,283 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 01:29:34,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:34,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735445834] [2024-06-28 01:29:34,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735445834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:34,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:34,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:34,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612075953] [2024-06-28 01:29:34,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:34,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:34,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:34,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:34,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:34,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:34,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 415 transitions, 8026 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 01:29:34,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:34,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:34,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:35,158 INFO L124 PetriNetUnfolderBase]: 1977/3455 cut-off events. [2024-06-28 01:29:35,158 INFO L125 PetriNetUnfolderBase]: For 127838/127838 co-relation queries the response was YES. [2024-06-28 01:29:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29609 conditions, 3455 events. 1977/3455 cut-off events. For 127838/127838 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 21598 event pairs, 427 based on Foata normal form. 2/3365 useless extension candidates. Maximal degree in co-relation 29482. Up to 2797 conditions per place. [2024-06-28 01:29:35,198 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 325 selfloop transitions, 114 changer transitions 0/445 dead transitions. [2024-06-28 01:29:35,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 445 transitions, 9223 flow [2024-06-28 01:29:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:35,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:35,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:29:35,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:29:35,200 INFO L175 Difference]: Start difference. First operand has 269 places, 415 transitions, 8026 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:29:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 445 transitions, 9223 flow [2024-06-28 01:29:35,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 445 transitions, 9031 flow, removed 49 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:35,647 INFO L231 Difference]: Finished difference. Result has 274 places, 419 transitions, 8316 flow [2024-06-28 01:29:35,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8316, PETRI_PLACES=274, PETRI_TRANSITIONS=419} [2024-06-28 01:29:35,648 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 234 predicate places. [2024-06-28 01:29:35,648 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 419 transitions, 8316 flow [2024-06-28 01:29:35,648 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 01:29:35,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:35,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:35,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:29:35,649 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 01:29:35,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:35,649 INFO L85 PathProgramCache]: Analyzing trace with hash 568125267, now seen corresponding path program 3 times [2024-06-28 01:29:35,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:35,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863856839] [2024-06-28 01:29:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:35,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:36,366 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 01:29:36,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:36,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863856839] [2024-06-28 01:29:36,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863856839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:36,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:36,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:36,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750945316] [2024-06-28 01:29:36,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:36,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:36,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:36,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:36,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:36,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 419 transitions, 8316 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 01:29:36,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:36,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:36,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:37,349 INFO L124 PetriNetUnfolderBase]: 1997/3546 cut-off events. [2024-06-28 01:29:37,350 INFO L125 PetriNetUnfolderBase]: For 131989/131989 co-relation queries the response was YES. [2024-06-28 01:29:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30348 conditions, 3546 events. 1997/3546 cut-off events. For 131989/131989 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 22677 event pairs, 396 based on Foata normal form. 1/3436 useless extension candidates. Maximal degree in co-relation 30219. Up to 2669 conditions per place. [2024-06-28 01:29:37,388 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 318 selfloop transitions, 145 changer transitions 0/469 dead transitions. [2024-06-28 01:29:37,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 469 transitions, 9986 flow [2024-06-28 01:29:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:29:37,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965277777777778 [2024-06-28 01:29:37,396 INFO L175 Difference]: Start difference. First operand has 274 places, 419 transitions, 8316 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:29:37,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 469 transitions, 9986 flow [2024-06-28 01:29:37,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 469 transitions, 9705 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-28 01:29:37,874 INFO L231 Difference]: Finished difference. Result has 278 places, 435 transitions, 8963 flow [2024-06-28 01:29:37,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8049, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8963, PETRI_PLACES=278, PETRI_TRANSITIONS=435} [2024-06-28 01:29:37,874 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 238 predicate places. [2024-06-28 01:29:37,874 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 435 transitions, 8963 flow [2024-06-28 01:29:37,875 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 01:29:37,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:37,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:29:37,875 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 01:29:37,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash 570956404, now seen corresponding path program 6 times [2024-06-28 01:29:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:37,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831773295] [2024-06-28 01:29:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:37,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:38,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:38,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831773295] [2024-06-28 01:29:38,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831773295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:38,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:38,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:38,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138555691] [2024-06-28 01:29:38,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:38,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:38,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:38,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:38,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:38,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:38,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 435 transitions, 8963 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 01:29:38,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:38,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:38,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:39,555 INFO L124 PetriNetUnfolderBase]: 2023/3556 cut-off events. [2024-06-28 01:29:39,555 INFO L125 PetriNetUnfolderBase]: For 139286/139286 co-relation queries the response was YES. [2024-06-28 01:29:39,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31133 conditions, 3556 events. 2023/3556 cut-off events. For 139286/139286 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22543 event pairs, 354 based on Foata normal form. 2/3455 useless extension candidates. Maximal degree in co-relation 31002. Up to 2698 conditions per place. [2024-06-28 01:29:39,591 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 340 selfloop transitions, 129 changer transitions 0/475 dead transitions. [2024-06-28 01:29:39,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 475 transitions, 10243 flow [2024-06-28 01:29:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-28 01:29:39,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49074074074074076 [2024-06-28 01:29:39,592 INFO L175 Difference]: Start difference. First operand has 278 places, 435 transitions, 8963 flow. Second operand 9 states and 159 transitions. [2024-06-28 01:29:39,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 475 transitions, 10243 flow [2024-06-28 01:29:40,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 475 transitions, 10012 flow, removed 61 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:40,089 INFO L231 Difference]: Finished difference. Result has 283 places, 438 transitions, 9138 flow [2024-06-28 01:29:40,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8732, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9138, PETRI_PLACES=283, PETRI_TRANSITIONS=438} [2024-06-28 01:29:40,089 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 243 predicate places. [2024-06-28 01:29:40,089 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 438 transitions, 9138 flow [2024-06-28 01:29:40,090 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 01:29:40,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:40,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:40,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:29:40,090 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 01:29:40,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1352396023, now seen corresponding path program 1 times [2024-06-28 01:29:40,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:40,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252848146] [2024-06-28 01:29:40,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:40,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:40,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252848146] [2024-06-28 01:29:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252848146] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:40,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:40,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:29:40,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899731315] [2024-06-28 01:29:40,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:40,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:29:40,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:40,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:29:40,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:29:40,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:40,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 438 transitions, 9138 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 01:29:40,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:40,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:40,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:41,777 INFO L124 PetriNetUnfolderBase]: 2036/3579 cut-off events. [2024-06-28 01:29:41,778 INFO L125 PetriNetUnfolderBase]: For 143471/143471 co-relation queries the response was YES. [2024-06-28 01:29:41,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31869 conditions, 3579 events. 2036/3579 cut-off events. For 143471/143471 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 22708 event pairs, 528 based on Foata normal form. 1/3477 useless extension candidates. Maximal degree in co-relation 31736. Up to 3116 conditions per place. [2024-06-28 01:29:41,812 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 418 selfloop transitions, 44 changer transitions 0/468 dead transitions. [2024-06-28 01:29:41,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 468 transitions, 10379 flow [2024-06-28 01:29:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:41,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:29:41,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-28 01:29:41,813 INFO L175 Difference]: Start difference. First operand has 283 places, 438 transitions, 9138 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:29:41,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 468 transitions, 10379 flow [2024-06-28 01:29:42,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 468 transitions, 10033 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:42,299 INFO L231 Difference]: Finished difference. Result has 284 places, 441 transitions, 9018 flow [2024-06-28 01:29:42,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8792, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9018, PETRI_PLACES=284, PETRI_TRANSITIONS=441} [2024-06-28 01:29:42,300 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-28 01:29:42,300 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 441 transitions, 9018 flow [2024-06-28 01:29:42,300 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 01:29:42,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:42,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:42,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:29:42,301 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 01:29:42,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:42,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1352396302, now seen corresponding path program 7 times [2024-06-28 01:29:42,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:42,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146461684] [2024-06-28 01:29:42,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:42,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:42,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:42,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:42,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146461684] [2024-06-28 01:29:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146461684] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:42,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:42,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:42,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452472357] [2024-06-28 01:29:42,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:42,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:42,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:42,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:42,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:42,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:42,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 441 transitions, 9018 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 01:29:42,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:42,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:42,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:43,921 INFO L124 PetriNetUnfolderBase]: 2148/3718 cut-off events. [2024-06-28 01:29:43,921 INFO L125 PetriNetUnfolderBase]: For 160094/160094 co-relation queries the response was YES. [2024-06-28 01:29:43,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33468 conditions, 3718 events. 2148/3718 cut-off events. For 160094/160094 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 23370 event pairs, 494 based on Foata normal form. 4/3630 useless extension candidates. Maximal degree in co-relation 33334. Up to 2981 conditions per place. [2024-06-28 01:29:43,963 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 415 selfloop transitions, 64 changer transitions 0/485 dead transitions. [2024-06-28 01:29:43,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 485 transitions, 10631 flow [2024-06-28 01:29:43,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:43,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:43,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-28 01:29:43,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-28 01:29:43,964 INFO L175 Difference]: Start difference. First operand has 284 places, 441 transitions, 9018 flow. Second operand 9 states and 155 transitions. [2024-06-28 01:29:43,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 485 transitions, 10631 flow [2024-06-28 01:29:44,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 485 transitions, 10463 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:44,556 INFO L231 Difference]: Finished difference. Result has 287 places, 448 transitions, 9268 flow [2024-06-28 01:29:44,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8850, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9268, PETRI_PLACES=287, PETRI_TRANSITIONS=448} [2024-06-28 01:29:44,556 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-28 01:29:44,557 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 448 transitions, 9268 flow [2024-06-28 01:29:44,557 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 01:29:44,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:44,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:44,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:29:44,557 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 01:29:44,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash 687135352, now seen corresponding path program 9 times [2024-06-28 01:29:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:44,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491883792] [2024-06-28 01:29:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:45,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:45,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:45,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491883792] [2024-06-28 01:29:45,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491883792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:45,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:45,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:45,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173965807] [2024-06-28 01:29:45,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:45,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:45,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:45,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:45,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:45,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:45,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 448 transitions, 9268 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 01:29:45,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:45,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:45,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:46,197 INFO L124 PetriNetUnfolderBase]: 2163/3740 cut-off events. [2024-06-28 01:29:46,199 INFO L125 PetriNetUnfolderBase]: For 166106/166106 co-relation queries the response was YES. [2024-06-28 01:29:46,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34244 conditions, 3740 events. 2163/3740 cut-off events. For 166106/166106 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23468 event pairs, 369 based on Foata normal form. 2/3649 useless extension candidates. Maximal degree in co-relation 34109. Up to 3082 conditions per place. [2024-06-28 01:29:46,244 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 343 selfloop transitions, 127 changer transitions 0/476 dead transitions. [2024-06-28 01:29:46,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 476 transitions, 10512 flow [2024-06-28 01:29:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:29:46,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:29:46,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-28 01:29:46,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-28 01:29:46,246 INFO L175 Difference]: Start difference. First operand has 287 places, 448 transitions, 9268 flow. Second operand 8 states and 135 transitions. [2024-06-28 01:29:46,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 476 transitions, 10512 flow [2024-06-28 01:29:46,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 476 transitions, 10310 flow, removed 73 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:46,825 INFO L231 Difference]: Finished difference. Result has 289 places, 450 transitions, 9458 flow [2024-06-28 01:29:46,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9066, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9458, PETRI_PLACES=289, PETRI_TRANSITIONS=450} [2024-06-28 01:29:46,827 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-28 01:29:46,828 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 450 transitions, 9458 flow [2024-06-28 01:29:46,828 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 01:29:46,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:46,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:46,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:29:46,828 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 01:29:46,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:46,829 INFO L85 PathProgramCache]: Analyzing trace with hash 687141304, now seen corresponding path program 8 times [2024-06-28 01:29:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866016425] [2024-06-28 01:29:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:47,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:47,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866016425] [2024-06-28 01:29:47,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866016425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:47,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:47,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748458141] [2024-06-28 01:29:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:47,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:47,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:47,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:47,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:47,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:47,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 450 transitions, 9458 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 01:29:47,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:47,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:47,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:48,831 INFO L124 PetriNetUnfolderBase]: 2321/4053 cut-off events. [2024-06-28 01:29:48,832 INFO L125 PetriNetUnfolderBase]: For 195596/195596 co-relation queries the response was YES. [2024-06-28 01:29:48,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37091 conditions, 4053 events. 2321/4053 cut-off events. For 195596/195596 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 26101 event pairs, 411 based on Foata normal form. 6/3943 useless extension candidates. Maximal degree in co-relation 36955. Up to 1937 conditions per place. [2024-06-28 01:29:48,881 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 333 selfloop transitions, 168 changer transitions 0/507 dead transitions. [2024-06-28 01:29:48,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 507 transitions, 11602 flow [2024-06-28 01:29:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:48,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:29:48,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-06-28 01:29:48,882 INFO L175 Difference]: Start difference. First operand has 289 places, 450 transitions, 9458 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:29:48,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 507 transitions, 11602 flow [2024-06-28 01:29:49,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 507 transitions, 11236 flow, removed 59 selfloop flow, removed 6 redundant places. [2024-06-28 01:29:49,551 INFO L231 Difference]: Finished difference. Result has 294 places, 462 transitions, 9958 flow [2024-06-28 01:29:49,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9092, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9958, PETRI_PLACES=294, PETRI_TRANSITIONS=462} [2024-06-28 01:29:49,552 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 254 predicate places. [2024-06-28 01:29:49,552 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 462 transitions, 9958 flow [2024-06-28 01:29:49,552 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 01:29:49,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:49,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:49,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:29:49,553 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 01:29:49,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash 687343114, now seen corresponding path program 9 times [2024-06-28 01:29:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:49,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730773764] [2024-06-28 01:29:49,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:49,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:50,143 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 01:29:50,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730773764] [2024-06-28 01:29:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730773764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:50,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:50,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:50,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634037436] [2024-06-28 01:29:50,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:50,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:50,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:50,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 462 transitions, 9958 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 01:29:50,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:50,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:50,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:51,273 INFO L124 PetriNetUnfolderBase]: 2317/4015 cut-off events. [2024-06-28 01:29:51,274 INFO L125 PetriNetUnfolderBase]: For 194428/194428 co-relation queries the response was YES. [2024-06-28 01:29:51,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38061 conditions, 4015 events. 2317/4015 cut-off events. For 194428/194428 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 25629 event pairs, 557 based on Foata normal form. 2/3914 useless extension candidates. Maximal degree in co-relation 37922. Up to 3250 conditions per place. [2024-06-28 01:29:51,321 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 426 selfloop transitions, 68 changer transitions 0/500 dead transitions. [2024-06-28 01:29:51,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 500 transitions, 11419 flow [2024-06-28 01:29:51,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:51,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:29:51,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:29:51,322 INFO L175 Difference]: Start difference. First operand has 294 places, 462 transitions, 9958 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:29:51,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 500 transitions, 11419 flow [2024-06-28 01:29:52,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 500 transitions, 11194 flow, removed 76 selfloop flow, removed 4 redundant places. [2024-06-28 01:29:52,072 INFO L231 Difference]: Finished difference. Result has 299 places, 464 transitions, 9983 flow [2024-06-28 01:29:52,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9733, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9983, PETRI_PLACES=299, PETRI_TRANSITIONS=464} [2024-06-28 01:29:52,073 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:29:52,073 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 464 transitions, 9983 flow [2024-06-28 01:29:52,073 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 01:29:52,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:52,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:52,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:29:52,073 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:29:52,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash 255122664, now seen corresponding path program 10 times [2024-06-28 01:29:52,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:52,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049433647] [2024-06-28 01:29:52,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:52,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:52,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049433647] [2024-06-28 01:29:52,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049433647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166623506] [2024-06-28 01:29:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:52,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:52,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 464 transitions, 9983 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 01:29:52,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:52,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:52,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:53,936 INFO L124 PetriNetUnfolderBase]: 2498/4288 cut-off events. [2024-06-28 01:29:53,936 INFO L125 PetriNetUnfolderBase]: For 221435/221435 co-relation queries the response was YES. [2024-06-28 01:29:53,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41208 conditions, 4288 events. 2498/4288 cut-off events. For 221435/221435 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27475 event pairs, 550 based on Foata normal form. 2/4187 useless extension candidates. Maximal degree in co-relation 41067. Up to 3095 conditions per place. [2024-06-28 01:29:53,981 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 418 selfloop transitions, 96 changer transitions 0/520 dead transitions. [2024-06-28 01:29:53,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 520 transitions, 12270 flow [2024-06-28 01:29:53,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-28 01:29:53,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-28 01:29:53,982 INFO L175 Difference]: Start difference. First operand has 299 places, 464 transitions, 9983 flow. Second operand 9 states and 164 transitions. [2024-06-28 01:29:53,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 520 transitions, 12270 flow [2024-06-28 01:29:54,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 520 transitions, 12058 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:29:54,677 INFO L231 Difference]: Finished difference. Result has 303 places, 478 transitions, 10611 flow [2024-06-28 01:29:54,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9777, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10611, PETRI_PLACES=303, PETRI_TRANSITIONS=478} [2024-06-28 01:29:54,678 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-28 01:29:54,678 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 478 transitions, 10611 flow [2024-06-28 01:29:54,679 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 01:29:54,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:54,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:54,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:29:54,679 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 01:29:54,679 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 255130383, now seen corresponding path program 2 times [2024-06-28 01:29:54,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:54,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66158561] [2024-06-28 01:29:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:54,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:55,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:55,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66158561] [2024-06-28 01:29:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66158561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794111439] [2024-06-28 01:29:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:55,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:55,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 478 transitions, 10611 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 01:29:55,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:55,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:55,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:56,686 INFO L124 PetriNetUnfolderBase]: 2511/4394 cut-off events. [2024-06-28 01:29:56,687 INFO L125 PetriNetUnfolderBase]: For 226038/226038 co-relation queries the response was YES. [2024-06-28 01:29:56,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42054 conditions, 4394 events. 2511/4394 cut-off events. For 226038/226038 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 28780 event pairs, 603 based on Foata normal form. 1/4264 useless extension candidates. Maximal degree in co-relation 41911. Up to 3755 conditions per place. [2024-06-28 01:29:56,732 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 446 selfloop transitions, 63 changer transitions 0/515 dead transitions. [2024-06-28 01:29:56,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 515 transitions, 12042 flow [2024-06-28 01:29:56,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:56,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:56,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:29:56,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4660493827160494 [2024-06-28 01:29:56,733 INFO L175 Difference]: Start difference. First operand has 303 places, 478 transitions, 10611 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:29:56,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 515 transitions, 12042 flow [2024-06-28 01:29:57,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 515 transitions, 11789 flow, removed 108 selfloop flow, removed 3 redundant places. [2024-06-28 01:29:57,460 INFO L231 Difference]: Finished difference. Result has 309 places, 481 transitions, 10638 flow [2024-06-28 01:29:57,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10374, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10638, PETRI_PLACES=309, PETRI_TRANSITIONS=481} [2024-06-28 01:29:57,460 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-06-28 01:29:57,461 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 481 transitions, 10638 flow [2024-06-28 01:29:57,461 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 01:29:57,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:29:57,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:29:57,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:29:57,461 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 01:29:57,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:29:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 255130104, now seen corresponding path program 11 times [2024-06-28 01:29:57,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:29:57,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213447988] [2024-06-28 01:29:57,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:29:57,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:29:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:29:58,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:29:58,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:29:58,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213447988] [2024-06-28 01:29:58,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213447988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:29:58,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:29:58,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:29:58,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009000275] [2024-06-28 01:29:58,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:29:58,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:29:58,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:29:58,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:29:58,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:29:58,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:29:58,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 481 transitions, 10638 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 01:29:58,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:29:58,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:29:58,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:29:59,354 INFO L124 PetriNetUnfolderBase]: 2593/4433 cut-off events. [2024-06-28 01:29:59,354 INFO L125 PetriNetUnfolderBase]: For 234912/234912 co-relation queries the response was YES. [2024-06-28 01:29:59,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42961 conditions, 4433 events. 2593/4433 cut-off events. For 234912/234912 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 28426 event pairs, 562 based on Foata normal form. 4/4335 useless extension candidates. Maximal degree in co-relation 42816. Up to 3161 conditions per place. [2024-06-28 01:29:59,410 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 422 selfloop transitions, 102 changer transitions 0/530 dead transitions. [2024-06-28 01:29:59,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 530 transitions, 12623 flow [2024-06-28 01:29:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:29:59,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:29:59,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-28 01:29:59,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-28 01:29:59,413 INFO L175 Difference]: Start difference. First operand has 309 places, 481 transitions, 10638 flow. Second operand 9 states and 165 transitions. [2024-06-28 01:29:59,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 530 transitions, 12623 flow [2024-06-28 01:30:00,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 530 transitions, 12391 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:00,456 INFO L231 Difference]: Finished difference. Result has 311 places, 488 transitions, 10886 flow [2024-06-28 01:30:00,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10406, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10886, PETRI_PLACES=311, PETRI_TRANSITIONS=488} [2024-06-28 01:30:00,457 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-28 01:30:00,457 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 488 transitions, 10886 flow [2024-06-28 01:30:00,457 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 01:30:00,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:00,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:00,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:30:00,458 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 01:30:00,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:00,458 INFO L85 PathProgramCache]: Analyzing trace with hash 888104907, now seen corresponding path program 3 times [2024-06-28 01:30:00,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:00,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649327808] [2024-06-28 01:30:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:00,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:01,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649327808] [2024-06-28 01:30:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649327808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:01,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:01,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:01,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104768015] [2024-06-28 01:30:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:01,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:01,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:01,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 488 transitions, 10886 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 01:30:01,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:01,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:01,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:02,870 INFO L124 PetriNetUnfolderBase]: 2606/4498 cut-off events. [2024-06-28 01:30:02,870 INFO L125 PetriNetUnfolderBase]: For 239157/239157 co-relation queries the response was YES. [2024-06-28 01:30:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43541 conditions, 4498 events. 2606/4498 cut-off events. For 239157/239157 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29060 event pairs, 814 based on Foata normal form. 1/4384 useless extension candidates. Maximal degree in co-relation 43395. Up to 4059 conditions per place. [2024-06-28 01:30:02,916 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 494 selfloop transitions, 22 changer transitions 0/522 dead transitions. [2024-06-28 01:30:02,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 522 transitions, 12279 flow [2024-06-28 01:30:02,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:02,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:30:02,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:30:02,917 INFO L175 Difference]: Start difference. First operand has 311 places, 488 transitions, 10886 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:30:02,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 522 transitions, 12279 flow [2024-06-28 01:30:03,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 522 transitions, 11981 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:03,733 INFO L231 Difference]: Finished difference. Result has 315 places, 491 transitions, 10780 flow [2024-06-28 01:30:03,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10590, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10780, PETRI_PLACES=315, PETRI_TRANSITIONS=491} [2024-06-28 01:30:03,733 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-28 01:30:03,734 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 491 transitions, 10780 flow [2024-06-28 01:30:03,734 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 01:30:03,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:03,734 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:03,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:30:03,734 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 01:30:03,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 888114207, now seen corresponding path program 4 times [2024-06-28 01:30:03,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:03,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882405871] [2024-06-28 01:30:03,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:03,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:04,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:04,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882405871] [2024-06-28 01:30:04,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882405871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:04,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:04,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:04,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239580719] [2024-06-28 01:30:04,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:04,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:04,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:04,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:04,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:04,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:04,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 491 transitions, 10780 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 01:30:04,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:04,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:04,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:06,081 INFO L124 PetriNetUnfolderBase]: 2604/4500 cut-off events. [2024-06-28 01:30:06,081 INFO L125 PetriNetUnfolderBase]: For 231870/231870 co-relation queries the response was YES. [2024-06-28 01:30:06,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42657 conditions, 4500 events. 2604/4500 cut-off events. For 231870/231870 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29101 event pairs, 812 based on Foata normal form. 1/4384 useless extension candidates. Maximal degree in co-relation 42510. Up to 4032 conditions per place. [2024-06-28 01:30:06,136 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 495 selfloop transitions, 28 changer transitions 0/529 dead transitions. [2024-06-28 01:30:06,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 529 transitions, 12193 flow [2024-06-28 01:30:06,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:06,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:06,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:30:06,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:30:06,138 INFO L175 Difference]: Start difference. First operand has 315 places, 491 transitions, 10780 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:30:06,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 529 transitions, 12193 flow [2024-06-28 01:30:07,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 529 transitions, 12037 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:07,072 INFO L231 Difference]: Finished difference. Result has 318 places, 493 transitions, 10794 flow [2024-06-28 01:30:07,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10624, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10794, PETRI_PLACES=318, PETRI_TRANSITIONS=493} [2024-06-28 01:30:07,073 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 278 predicate places. [2024-06-28 01:30:07,073 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 493 transitions, 10794 flow [2024-06-28 01:30:07,073 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 01:30:07,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:07,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:07,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:30:07,074 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 01:30:07,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:07,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1585608, now seen corresponding path program 10 times [2024-06-28 01:30:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:07,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250736568] [2024-06-28 01:30:07,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:07,918 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 01:30:07,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:07,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250736568] [2024-06-28 01:30:07,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250736568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:07,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:07,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:07,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75796560] [2024-06-28 01:30:07,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:07,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:07,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:07,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:07,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:07,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:07,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 493 transitions, 10794 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 01:30:07,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:07,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:07,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:09,113 INFO L124 PetriNetUnfolderBase]: 2604/4449 cut-off events. [2024-06-28 01:30:09,113 INFO L125 PetriNetUnfolderBase]: For 227295/227295 co-relation queries the response was YES. [2024-06-28 01:30:09,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42517 conditions, 4449 events. 2604/4449 cut-off events. For 227295/227295 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 28466 event pairs, 385 based on Foata normal form. 2/4345 useless extension candidates. Maximal degree in co-relation 42369. Up to 3742 conditions per place. [2024-06-28 01:30:09,167 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 380 selfloop transitions, 134 changer transitions 0/520 dead transitions. [2024-06-28 01:30:09,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 520 transitions, 12148 flow [2024-06-28 01:30:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:30:09,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:30:09,169 INFO L175 Difference]: Start difference. First operand has 318 places, 493 transitions, 10794 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:30:09,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 520 transitions, 12148 flow [2024-06-28 01:30:10,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 520 transitions, 11974 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:10,236 INFO L231 Difference]: Finished difference. Result has 319 places, 495 transitions, 11031 flow [2024-06-28 01:30:10,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10620, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11031, PETRI_PLACES=319, PETRI_TRANSITIONS=495} [2024-06-28 01:30:10,237 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 279 predicate places. [2024-06-28 01:30:10,237 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 495 transitions, 11031 flow [2024-06-28 01:30:10,237 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 01:30:10,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:10,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:10,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:30:10,238 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 01:30:10,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1579656, now seen corresponding path program 12 times [2024-06-28 01:30:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:10,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118751196] [2024-06-28 01:30:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:10,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:10,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:10,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118751196] [2024-06-28 01:30:10,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118751196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:10,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478838681] [2024-06-28 01:30:10,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:10,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:10,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:10,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 495 transitions, 11031 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 01:30:10,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:10,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:10,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:12,291 INFO L124 PetriNetUnfolderBase]: 2656/4546 cut-off events. [2024-06-28 01:30:12,291 INFO L125 PetriNetUnfolderBase]: For 246196/246196 co-relation queries the response was YES. [2024-06-28 01:30:12,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43744 conditions, 4546 events. 2656/4546 cut-off events. For 246196/246196 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 29153 event pairs, 483 based on Foata normal form. 2/4437 useless extension candidates. Maximal degree in co-relation 43595. Up to 1642 conditions per place. [2024-06-28 01:30:12,350 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 358 selfloop transitions, 192 changer transitions 0/556 dead transitions. [2024-06-28 01:30:12,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 556 transitions, 13653 flow [2024-06-28 01:30:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:12,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:12,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-28 01:30:12,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-28 01:30:12,352 INFO L175 Difference]: Start difference. First operand has 319 places, 495 transitions, 11031 flow. Second operand 9 states and 171 transitions. [2024-06-28 01:30:12,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 556 transitions, 13653 flow [2024-06-28 01:30:13,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 556 transitions, 13258 flow, removed 65 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:13,375 INFO L231 Difference]: Finished difference. Result has 324 places, 508 transitions, 11628 flow [2024-06-28 01:30:13,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=10636, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11628, PETRI_PLACES=324, PETRI_TRANSITIONS=508} [2024-06-28 01:30:13,375 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 284 predicate places. [2024-06-28 01:30:13,375 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 508 transitions, 11628 flow [2024-06-28 01:30:13,376 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 01:30:13,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:13,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:13,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:30:13,376 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 01:30:13,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash 264326874, now seen corresponding path program 13 times [2024-06-28 01:30:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:13,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792680289] [2024-06-28 01:30:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:13,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:13,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792680289] [2024-06-28 01:30:13,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792680289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:13,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:13,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:13,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097840235] [2024-06-28 01:30:13,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:13,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:13,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:14,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:14,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 508 transitions, 11628 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 01:30:14,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:14,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:15,368 INFO L124 PetriNetUnfolderBase]: 2648/4552 cut-off events. [2024-06-28 01:30:15,369 INFO L125 PetriNetUnfolderBase]: For 254945/254945 co-relation queries the response was YES. [2024-06-28 01:30:15,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45162 conditions, 4552 events. 2648/4552 cut-off events. For 254945/254945 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 29463 event pairs, 802 based on Foata normal form. 4/4445 useless extension candidates. Maximal degree in co-relation 45009. Up to 4013 conditions per place. [2024-06-28 01:30:15,428 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 503 selfloop transitions, 33 changer transitions 0/542 dead transitions. [2024-06-28 01:30:15,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 542 transitions, 13065 flow [2024-06-28 01:30:15,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:30:15,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-28 01:30:15,430 INFO L175 Difference]: Start difference. First operand has 324 places, 508 transitions, 11628 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:30:15,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 542 transitions, 13065 flow [2024-06-28 01:30:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 542 transitions, 12707 flow, removed 149 selfloop flow, removed 3 redundant places. [2024-06-28 01:30:16,466 INFO L231 Difference]: Finished difference. Result has 330 places, 508 transitions, 11345 flow [2024-06-28 01:30:16,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11270, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11345, PETRI_PLACES=330, PETRI_TRANSITIONS=508} [2024-06-28 01:30:16,466 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 290 predicate places. [2024-06-28 01:30:16,467 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 508 transitions, 11345 flow [2024-06-28 01:30:16,467 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 01:30:16,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:16,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:16,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:30:16,467 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 01:30:16,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:16,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1377846, now seen corresponding path program 14 times [2024-06-28 01:30:16,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:16,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671778499] [2024-06-28 01:30:16,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:16,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:17,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:17,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:17,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671778499] [2024-06-28 01:30:17,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671778499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:17,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986914678] [2024-06-28 01:30:17,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:17,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:17,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:17,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 508 transitions, 11345 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 01:30:17,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:17,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:17,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:18,342 INFO L124 PetriNetUnfolderBase]: 2674/4666 cut-off events. [2024-06-28 01:30:18,342 INFO L125 PetriNetUnfolderBase]: For 245126/245126 co-relation queries the response was YES. [2024-06-28 01:30:18,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44944 conditions, 4666 events. 2674/4666 cut-off events. For 245126/245126 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 30967 event pairs, 614 based on Foata normal form. 2/4530 useless extension candidates. Maximal degree in co-relation 44789. Up to 3962 conditions per place. [2024-06-28 01:30:18,409 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 492 selfloop transitions, 54 changer transitions 0/552 dead transitions. [2024-06-28 01:30:18,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 552 transitions, 13239 flow [2024-06-28 01:30:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-28 01:30:18,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-28 01:30:18,410 INFO L175 Difference]: Start difference. First operand has 330 places, 508 transitions, 11345 flow. Second operand 9 states and 158 transitions. [2024-06-28 01:30:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 552 transitions, 13239 flow [2024-06-28 01:30:19,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 552 transitions, 13142 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:19,579 INFO L231 Difference]: Finished difference. Result has 331 places, 513 transitions, 11619 flow [2024-06-28 01:30:19,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11248, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11619, PETRI_PLACES=331, PETRI_TRANSITIONS=513} [2024-06-28 01:30:19,582 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 291 predicate places. [2024-06-28 01:30:19,582 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 513 transitions, 11619 flow [2024-06-28 01:30:19,582 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 01:30:19,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:19,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:19,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:30:19,583 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:19,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1370406, now seen corresponding path program 15 times [2024-06-28 01:30:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:19,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919871418] [2024-06-28 01:30:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:19,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:19,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919871418] [2024-06-28 01:30:20,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919871418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:20,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:20,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:20,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591166752] [2024-06-28 01:30:20,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:20,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:20,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:20,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:20,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:20,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:20,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 513 transitions, 11619 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 01:30:20,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:20,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:20,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:21,447 INFO L124 PetriNetUnfolderBase]: 2666/4653 cut-off events. [2024-06-28 01:30:21,447 INFO L125 PetriNetUnfolderBase]: For 242328/242328 co-relation queries the response was YES. [2024-06-28 01:30:21,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44584 conditions, 4653 events. 2666/4653 cut-off events. For 242328/242328 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 30877 event pairs, 612 based on Foata normal form. 4/4520 useless extension candidates. Maximal degree in co-relation 44428. Up to 3958 conditions per place. [2024-06-28 01:30:21,507 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 492 selfloop transitions, 53 changer transitions 0/551 dead transitions. [2024-06-28 01:30:21,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 551 transitions, 13132 flow [2024-06-28 01:30:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:30:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:30:21,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:30:21,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-28 01:30:21,508 INFO L175 Difference]: Start difference. First operand has 331 places, 513 transitions, 11619 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:30:21,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 551 transitions, 13132 flow [2024-06-28 01:30:22,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 551 transitions, 12764 flow, removed 134 selfloop flow, removed 5 redundant places. [2024-06-28 01:30:22,664 INFO L231 Difference]: Finished difference. Result has 335 places, 513 transitions, 11365 flow [2024-06-28 01:30:22,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=11251, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11365, PETRI_PLACES=335, PETRI_TRANSITIONS=513} [2024-06-28 01:30:22,665 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-28 01:30:22,666 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 513 transitions, 11365 flow [2024-06-28 01:30:22,666 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 01:30:22,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:22,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:22,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:30:22,666 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:30:22,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:22,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206592, now seen corresponding path program 1 times [2024-06-28 01:30:22,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:22,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985814990] [2024-06-28 01:30:22,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:22,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:22,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:22,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985814990] [2024-06-28 01:30:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985814990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:22,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:22,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:30:22,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098882584] [2024-06-28 01:30:22,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:22,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:30:22,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:22,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:30:22,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:30:22,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-28 01:30:22,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 513 transitions, 11365 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 01:30:22,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:22,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-28 01:30:22,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:23,353 INFO L124 PetriNetUnfolderBase]: 1244/2262 cut-off events. [2024-06-28 01:30:23,353 INFO L125 PetriNetUnfolderBase]: For 122864/122984 co-relation queries the response was YES. [2024-06-28 01:30:23,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20479 conditions, 2262 events. 1244/2262 cut-off events. For 122864/122984 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14049 event pairs, 317 based on Foata normal form. 194/2359 useless extension candidates. Maximal degree in co-relation 20322. Up to 715 conditions per place. [2024-06-28 01:30:23,376 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 162 selfloop transitions, 86 changer transitions 0/315 dead transitions. [2024-06-28 01:30:23,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 315 transitions, 6912 flow [2024-06-28 01:30:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:30:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:30:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-28 01:30:23,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-28 01:30:23,378 INFO L175 Difference]: Start difference. First operand has 335 places, 513 transitions, 11365 flow. Second operand 4 states and 96 transitions. [2024-06-28 01:30:23,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 315 transitions, 6912 flow [2024-06-28 01:30:23,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 315 transitions, 5150 flow, removed 52 selfloop flow, removed 79 redundant places. [2024-06-28 01:30:23,795 INFO L231 Difference]: Finished difference. Result has 261 places, 283 transitions, 4640 flow [2024-06-28 01:30:23,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4290, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4640, PETRI_PLACES=261, PETRI_TRANSITIONS=283} [2024-06-28 01:30:23,795 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 221 predicate places. [2024-06-28 01:30:23,795 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 283 transitions, 4640 flow [2024-06-28 01:30:23,795 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 01:30:23,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:23,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:23,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:30:23,796 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 01:30:23,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1369635867, now seen corresponding path program 1 times [2024-06-28 01:30:23,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:23,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734774222] [2024-06-28 01:30:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:23,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:23,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:24,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:24,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:24,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734774222] [2024-06-28 01:30:24,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734774222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:24,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:24,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:24,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389278849] [2024-06-28 01:30:24,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:24,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:24,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 283 transitions, 4640 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 01:30:24,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:24,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:25,321 INFO L124 PetriNetUnfolderBase]: 1334/2301 cut-off events. [2024-06-28 01:30:25,322 INFO L125 PetriNetUnfolderBase]: For 89832/89832 co-relation queries the response was YES. [2024-06-28 01:30:25,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18993 conditions, 2301 events. 1334/2301 cut-off events. For 89832/89832 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 12649 event pairs, 307 based on Foata normal form. 2/2159 useless extension candidates. Maximal degree in co-relation 18870. Up to 1978 conditions per place. [2024-06-28 01:30:25,344 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 261 selfloop transitions, 49 changer transitions 0/317 dead transitions. [2024-06-28 01:30:25,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 317 transitions, 5528 flow [2024-06-28 01:30:25,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:30:25,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:30:25,345 INFO L175 Difference]: Start difference. First operand has 261 places, 283 transitions, 4640 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:30:25,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 317 transitions, 5528 flow [2024-06-28 01:30:25,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 317 transitions, 5351 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:25,670 INFO L231 Difference]: Finished difference. Result has 265 places, 286 transitions, 4706 flow [2024-06-28 01:30:25,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4473, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4706, PETRI_PLACES=265, PETRI_TRANSITIONS=286} [2024-06-28 01:30:25,671 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 225 predicate places. [2024-06-28 01:30:25,671 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 286 transitions, 4706 flow [2024-06-28 01:30:25,671 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 01:30:25,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:25,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:25,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:30:25,671 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 01:30:25,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 843512989, now seen corresponding path program 2 times [2024-06-28 01:30:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:25,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509315891] [2024-06-28 01:30:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:26,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:26,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509315891] [2024-06-28 01:30:26,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509315891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:26,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:26,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:26,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942172974] [2024-06-28 01:30:26,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:26,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:26,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:26,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:26,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:26,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:26,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 286 transitions, 4706 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 01:30:26,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:26,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:26,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:27,108 INFO L124 PetriNetUnfolderBase]: 1374/2387 cut-off events. [2024-06-28 01:30:27,109 INFO L125 PetriNetUnfolderBase]: For 93382/93382 co-relation queries the response was YES. [2024-06-28 01:30:27,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19690 conditions, 2387 events. 1374/2387 cut-off events. For 93382/93382 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13330 event pairs, 215 based on Foata normal form. 2/2240 useless extension candidates. Maximal degree in co-relation 19565. Up to 1977 conditions per place. [2024-06-28 01:30:27,128 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 261 selfloop transitions, 56 changer transitions 0/324 dead transitions. [2024-06-28 01:30:27,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 324 transitions, 5736 flow [2024-06-28 01:30:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:27,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:30:27,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:30:27,129 INFO L175 Difference]: Start difference. First operand has 265 places, 286 transitions, 4706 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:30:27,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 324 transitions, 5736 flow [2024-06-28 01:30:27,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 324 transitions, 5430 flow, removed 106 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:27,434 INFO L231 Difference]: Finished difference. Result has 268 places, 292 transitions, 4787 flow [2024-06-28 01:30:27,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4508, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4787, PETRI_PLACES=268, PETRI_TRANSITIONS=292} [2024-06-28 01:30:27,434 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 228 predicate places. [2024-06-28 01:30:27,435 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 292 transitions, 4787 flow [2024-06-28 01:30:27,435 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 01:30:27,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:27,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:27,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:30:27,435 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 01:30:27,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:27,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1015222439, now seen corresponding path program 3 times [2024-06-28 01:30:27,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:27,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443947604] [2024-06-28 01:30:27,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:27,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:28,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:28,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443947604] [2024-06-28 01:30:28,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443947604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144997623] [2024-06-28 01:30:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:28,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:28,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 292 transitions, 4787 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 01:30:28,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:28,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:28,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:28,923 INFO L124 PetriNetUnfolderBase]: 1398/2439 cut-off events. [2024-06-28 01:30:28,923 INFO L125 PetriNetUnfolderBase]: For 95153/95153 co-relation queries the response was YES. [2024-06-28 01:30:28,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19906 conditions, 2439 events. 1398/2439 cut-off events. For 95153/95153 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 13748 event pairs, 347 based on Foata normal form. 2/2289 useless extension candidates. Maximal degree in co-relation 19779. Up to 2124 conditions per place. [2024-06-28 01:30:28,947 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 263 selfloop transitions, 54 changer transitions 0/324 dead transitions. [2024-06-28 01:30:28,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 324 transitions, 5689 flow [2024-06-28 01:30:28,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:28,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:30:28,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 01:30:28,948 INFO L175 Difference]: Start difference. First operand has 268 places, 292 transitions, 4787 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:30:28,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 324 transitions, 5689 flow [2024-06-28 01:30:29,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 324 transitions, 5488 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:29,285 INFO L231 Difference]: Finished difference. Result has 272 places, 295 transitions, 4842 flow [2024-06-28 01:30:29,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4842, PETRI_PLACES=272, PETRI_TRANSITIONS=295} [2024-06-28 01:30:29,286 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 232 predicate places. [2024-06-28 01:30:29,286 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 295 transitions, 4842 flow [2024-06-28 01:30:29,286 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 01:30:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:29,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:30:29,287 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 01:30:29,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2011879409, now seen corresponding path program 4 times [2024-06-28 01:30:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:29,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860156425] [2024-06-28 01:30:29,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:29,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:30,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860156425] [2024-06-28 01:30:30,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860156425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:30,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:30,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:30,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062042406] [2024-06-28 01:30:30,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:30,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:30,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:30,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:30,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:30,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:30,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 295 transitions, 4842 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 01:30:30,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:30,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:30,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:30,909 INFO L124 PetriNetUnfolderBase]: 1414/2468 cut-off events. [2024-06-28 01:30:30,909 INFO L125 PetriNetUnfolderBase]: For 98303/98303 co-relation queries the response was YES. [2024-06-28 01:30:30,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20065 conditions, 2468 events. 1414/2468 cut-off events. For 98303/98303 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13974 event pairs, 365 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 19936. Up to 2189 conditions per place. [2024-06-28 01:30:30,928 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 256 selfloop transitions, 59 changer transitions 0/322 dead transitions. [2024-06-28 01:30:30,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 322 transitions, 5690 flow [2024-06-28 01:30:30,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:30,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:30,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 01:30:30,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:30:30,929 INFO L175 Difference]: Start difference. First operand has 272 places, 295 transitions, 4842 flow. Second operand 10 states and 150 transitions. [2024-06-28 01:30:30,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 322 transitions, 5690 flow [2024-06-28 01:30:31,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 322 transitions, 5478 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:31,270 INFO L231 Difference]: Finished difference. Result has 275 places, 297 transitions, 4852 flow [2024-06-28 01:30:31,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4852, PETRI_PLACES=275, PETRI_TRANSITIONS=297} [2024-06-28 01:30:31,271 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 235 predicate places. [2024-06-28 01:30:31,271 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 297 transitions, 4852 flow [2024-06-28 01:30:31,271 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 01:30:31,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:31,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:31,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:30:31,272 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 01:30:31,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:31,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1015644845, now seen corresponding path program 1 times [2024-06-28 01:30:31,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:31,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063558910] [2024-06-28 01:30:31,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:31,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:32,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063558910] [2024-06-28 01:30:32,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063558910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:32,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:32,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:32,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809951538] [2024-06-28 01:30:32,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:32,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:32,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:32,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:32,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:32,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 297 transitions, 4852 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 01:30:32,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:32,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:32,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:32,713 INFO L124 PetriNetUnfolderBase]: 1420/2477 cut-off events. [2024-06-28 01:30:32,713 INFO L125 PetriNetUnfolderBase]: For 98225/98225 co-relation queries the response was YES. [2024-06-28 01:30:32,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20053 conditions, 2477 events. 1420/2477 cut-off events. For 98225/98225 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14047 event pairs, 361 based on Foata normal form. 1/2326 useless extension candidates. Maximal degree in co-relation 19923. Up to 2202 conditions per place. [2024-06-28 01:30:32,739 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 252 selfloop transitions, 63 changer transitions 0/322 dead transitions. [2024-06-28 01:30:32,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 322 transitions, 5664 flow [2024-06-28 01:30:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:32,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 01:30:32,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 01:30:32,741 INFO L175 Difference]: Start difference. First operand has 275 places, 297 transitions, 4852 flow. Second operand 10 states and 148 transitions. [2024-06-28 01:30:32,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 322 transitions, 5664 flow [2024-06-28 01:30:33,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 322 transitions, 5464 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:33,114 INFO L231 Difference]: Finished difference. Result has 277 places, 299 transitions, 4862 flow [2024-06-28 01:30:33,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4652, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4862, PETRI_PLACES=277, PETRI_TRANSITIONS=299} [2024-06-28 01:30:33,115 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-28 01:30:33,115 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 299 transitions, 4862 flow [2024-06-28 01:30:33,115 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 01:30:33,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:33,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:33,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:30:33,115 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 01:30:33,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 248907963, now seen corresponding path program 1 times [2024-06-28 01:30:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:33,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515447880] [2024-06-28 01:30:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:33,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:33,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515447880] [2024-06-28 01:30:33,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515447880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040683776] [2024-06-28 01:30:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:33,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:33,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:33,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:33,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:33,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:33,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 299 transitions, 4862 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 01:30:33,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:33,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:33,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:34,611 INFO L124 PetriNetUnfolderBase]: 1433/2490 cut-off events. [2024-06-28 01:30:34,611 INFO L125 PetriNetUnfolderBase]: For 100027/100027 co-relation queries the response was YES. [2024-06-28 01:30:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20198 conditions, 2490 events. 1433/2490 cut-off events. For 100027/100027 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14068 event pairs, 328 based on Foata normal form. 2/2335 useless extension candidates. Maximal degree in co-relation 20067. Up to 2226 conditions per place. [2024-06-28 01:30:34,631 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 263 selfloop transitions, 57 changer transitions 0/327 dead transitions. [2024-06-28 01:30:34,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 327 transitions, 5696 flow [2024-06-28 01:30:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 01:30:34,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 01:30:34,633 INFO L175 Difference]: Start difference. First operand has 277 places, 299 transitions, 4862 flow. Second operand 11 states and 160 transitions. [2024-06-28 01:30:34,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 327 transitions, 5696 flow [2024-06-28 01:30:35,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 327 transitions, 5536 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:35,007 INFO L231 Difference]: Finished difference. Result has 280 places, 301 transitions, 4888 flow [2024-06-28 01:30:35,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4702, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4888, PETRI_PLACES=280, PETRI_TRANSITIONS=301} [2024-06-28 01:30:35,007 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 240 predicate places. [2024-06-28 01:30:35,007 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 301 transitions, 4888 flow [2024-06-28 01:30:35,007 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 01:30:35,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:35,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:35,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:30:35,008 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 01:30:35,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:35,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1171970905, now seen corresponding path program 5 times [2024-06-28 01:30:35,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:35,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324335958] [2024-06-28 01:30:35,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:35,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:35,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:35,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324335958] [2024-06-28 01:30:35,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324335958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:35,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:35,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:35,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473318215] [2024-06-28 01:30:35,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:35,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:35,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:35,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:35,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:35,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:35,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 301 transitions, 4888 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 01:30:35,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:35,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:36,675 INFO L124 PetriNetUnfolderBase]: 1492/2618 cut-off events. [2024-06-28 01:30:36,675 INFO L125 PetriNetUnfolderBase]: For 105236/105236 co-relation queries the response was YES. [2024-06-28 01:30:36,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20883 conditions, 2618 events. 1492/2618 cut-off events. For 105236/105236 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15067 event pairs, 310 based on Foata normal form. 2/2456 useless extension candidates. Maximal degree in co-relation 20751. Up to 2220 conditions per place. [2024-06-28 01:30:36,703 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 279 selfloop transitions, 53 changer transitions 0/339 dead transitions. [2024-06-28 01:30:36,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 339 transitions, 5864 flow [2024-06-28 01:30:36,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:36,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:30:36,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:30:36,704 INFO L175 Difference]: Start difference. First operand has 280 places, 301 transitions, 4888 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:30:36,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 339 transitions, 5864 flow [2024-06-28 01:30:37,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 339 transitions, 5730 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:37,198 INFO L231 Difference]: Finished difference. Result has 283 places, 310 transitions, 5081 flow [2024-06-28 01:30:37,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4754, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5081, PETRI_PLACES=283, PETRI_TRANSITIONS=310} [2024-06-28 01:30:37,199 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 243 predicate places. [2024-06-28 01:30:37,199 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 310 transitions, 5081 flow [2024-06-28 01:30:37,199 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 01:30:37,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:37,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:37,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:30:37,200 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 01:30:37,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1101218089, now seen corresponding path program 6 times [2024-06-28 01:30:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:37,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969598315] [2024-06-28 01:30:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969598315] [2024-06-28 01:30:38,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969598315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:38,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:38,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872876344] [2024-06-28 01:30:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:38,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:38,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:38,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:38,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:38,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:38,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 310 transitions, 5081 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 01:30:38,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:38,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:38,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:38,845 INFO L124 PetriNetUnfolderBase]: 1518/2665 cut-off events. [2024-06-28 01:30:38,845 INFO L125 PetriNetUnfolderBase]: For 110868/110868 co-relation queries the response was YES. [2024-06-28 01:30:38,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21394 conditions, 2665 events. 1518/2665 cut-off events. For 110868/110868 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15418 event pairs, 374 based on Foata normal form. 2/2504 useless extension candidates. Maximal degree in co-relation 21260. Up to 2364 conditions per place. [2024-06-28 01:30:38,873 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 271 selfloop transitions, 59 changer transitions 0/337 dead transitions. [2024-06-28 01:30:38,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 337 transitions, 5963 flow [2024-06-28 01:30:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:38,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:38,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 01:30:38,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 01:30:38,889 INFO L175 Difference]: Start difference. First operand has 283 places, 310 transitions, 5081 flow. Second operand 10 states and 151 transitions. [2024-06-28 01:30:38,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 337 transitions, 5963 flow [2024-06-28 01:30:39,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 337 transitions, 5778 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:39,347 INFO L231 Difference]: Finished difference. Result has 287 places, 314 transitions, 5140 flow [2024-06-28 01:30:39,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4896, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5140, PETRI_PLACES=287, PETRI_TRANSITIONS=314} [2024-06-28 01:30:39,351 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-28 01:30:39,351 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 314 transitions, 5140 flow [2024-06-28 01:30:39,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:30:39,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:39,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:39,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:30:39,352 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 01:30:39,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:39,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1143304219, now seen corresponding path program 2 times [2024-06-28 01:30:39,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:39,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102376876] [2024-06-28 01:30:39,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:39,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:40,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102376876] [2024-06-28 01:30:40,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102376876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:40,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:40,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:40,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501853677] [2024-06-28 01:30:40,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:40,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:40,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:40,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:40,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:40,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:40,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 314 transitions, 5140 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 01:30:40,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:40,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:40,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:40,952 INFO L124 PetriNetUnfolderBase]: 1518/2665 cut-off events. [2024-06-28 01:30:40,953 INFO L125 PetriNetUnfolderBase]: For 107192/107192 co-relation queries the response was YES. [2024-06-28 01:30:40,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21187 conditions, 2665 events. 1518/2665 cut-off events. For 107192/107192 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15442 event pairs, 374 based on Foata normal form. 1/2500 useless extension candidates. Maximal degree in co-relation 21052. Up to 2376 conditions per place. [2024-06-28 01:30:40,982 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 269 selfloop transitions, 63 changer transitions 0/339 dead transitions. [2024-06-28 01:30:40,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 339 transitions, 6008 flow [2024-06-28 01:30:40,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:40,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:40,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:30:40,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:30:40,983 INFO L175 Difference]: Start difference. First operand has 287 places, 314 transitions, 5140 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:30:40,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 339 transitions, 6008 flow [2024-06-28 01:30:41,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 339 transitions, 5806 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:41,432 INFO L231 Difference]: Finished difference. Result has 289 places, 318 transitions, 5188 flow [2024-06-28 01:30:41,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5188, PETRI_PLACES=289, PETRI_TRANSITIONS=318} [2024-06-28 01:30:41,432 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 249 predicate places. [2024-06-28 01:30:41,432 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 318 transitions, 5188 flow [2024-06-28 01:30:41,432 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 01:30:41,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:41,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:30:41,433 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 01:30:41,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:41,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1143309055, now seen corresponding path program 7 times [2024-06-28 01:30:41,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:41,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013875174] [2024-06-28 01:30:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:42,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:42,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:42,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013875174] [2024-06-28 01:30:42,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013875174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:42,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:42,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:42,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226293620] [2024-06-28 01:30:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:42,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:42,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:42,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:42,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:42,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 318 transitions, 5188 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 01:30:42,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:43,133 INFO L124 PetriNetUnfolderBase]: 1560/2756 cut-off events. [2024-06-28 01:30:43,133 INFO L125 PetriNetUnfolderBase]: For 113184/113184 co-relation queries the response was YES. [2024-06-28 01:30:43,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21685 conditions, 2756 events. 1560/2756 cut-off events. For 113184/113184 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 16227 event pairs, 376 based on Foata normal form. 2/2589 useless extension candidates. Maximal degree in co-relation 21549. Up to 2393 conditions per place. [2024-06-28 01:30:43,165 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 289 selfloop transitions, 55 changer transitions 0/351 dead transitions. [2024-06-28 01:30:43,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 351 transitions, 6168 flow [2024-06-28 01:30:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:30:43,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 01:30:43,167 INFO L175 Difference]: Start difference. First operand has 289 places, 318 transitions, 5188 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:30:43,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 351 transitions, 6168 flow [2024-06-28 01:30:43,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 351 transitions, 6021 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:43,674 INFO L231 Difference]: Finished difference. Result has 293 places, 324 transitions, 5345 flow [2024-06-28 01:30:43,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5041, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5345, PETRI_PLACES=293, PETRI_TRANSITIONS=324} [2024-06-28 01:30:43,675 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-28 01:30:43,675 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 324 transitions, 5345 flow [2024-06-28 01:30:43,675 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 01:30:43,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:43,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:43,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:30:43,676 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 01:30:43,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1055538941, now seen corresponding path program 2 times [2024-06-28 01:30:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:43,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033890301] [2024-06-28 01:30:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:43,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:44,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:44,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:44,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033890301] [2024-06-28 01:30:44,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033890301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:44,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:44,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:44,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727367312] [2024-06-28 01:30:44,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:44,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:44,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:44,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:44,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:44,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:44,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 324 transitions, 5345 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 01:30:44,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:44,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:44,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:45,185 INFO L124 PetriNetUnfolderBase]: 1570/2770 cut-off events. [2024-06-28 01:30:45,185 INFO L125 PetriNetUnfolderBase]: For 114363/114363 co-relation queries the response was YES. [2024-06-28 01:30:45,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21938 conditions, 2770 events. 1570/2770 cut-off events. For 114363/114363 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16300 event pairs, 400 based on Foata normal form. 2/2596 useless extension candidates. Maximal degree in co-relation 21800. Up to 2472 conditions per place. [2024-06-28 01:30:45,218 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 289 selfloop transitions, 56 changer transitions 0/352 dead transitions. [2024-06-28 01:30:45,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 352 transitions, 6251 flow [2024-06-28 01:30:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:45,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:30:45,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-28 01:30:45,219 INFO L175 Difference]: Start difference. First operand has 293 places, 324 transitions, 5345 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:30:45,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 352 transitions, 6251 flow [2024-06-28 01:30:45,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 352 transitions, 6045 flow, removed 66 selfloop flow, removed 6 redundant places. [2024-06-28 01:30:45,803 INFO L231 Difference]: Finished difference. Result has 298 places, 328 transitions, 5363 flow [2024-06-28 01:30:45,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5363, PETRI_PLACES=298, PETRI_TRANSITIONS=328} [2024-06-28 01:30:45,803 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 258 predicate places. [2024-06-28 01:30:45,803 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 328 transitions, 5363 flow [2024-06-28 01:30:45,804 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 01:30:45,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:45,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:45,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:30:45,804 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 01:30:45,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1742525171, now seen corresponding path program 8 times [2024-06-28 01:30:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902558140] [2024-06-28 01:30:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:45,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:46,711 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 01:30:46,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:46,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902558140] [2024-06-28 01:30:46,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902558140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:46,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:46,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:46,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668992022] [2024-06-28 01:30:46,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:46,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:46,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:46,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:46,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:46,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 328 transitions, 5363 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 01:30:46,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:46,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:46,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:47,413 INFO L124 PetriNetUnfolderBase]: 1586/2803 cut-off events. [2024-06-28 01:30:47,413 INFO L125 PetriNetUnfolderBase]: For 116214/116214 co-relation queries the response was YES. [2024-06-28 01:30:47,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22038 conditions, 2803 events. 1586/2803 cut-off events. For 116214/116214 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16595 event pairs, 481 based on Foata normal form. 2/2628 useless extension candidates. Maximal degree in co-relation 21899. Up to 2574 conditions per place. [2024-06-28 01:30:47,443 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 321 selfloop transitions, 24 changer transitions 0/352 dead transitions. [2024-06-28 01:30:47,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 352 transitions, 6275 flow [2024-06-28 01:30:47,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:47,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:30:47,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:30:47,444 INFO L175 Difference]: Start difference. First operand has 298 places, 328 transitions, 5363 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:30:47,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 352 transitions, 6275 flow [2024-06-28 01:30:47,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 352 transitions, 6129 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:47,951 INFO L231 Difference]: Finished difference. Result has 299 places, 330 transitions, 5382 flow [2024-06-28 01:30:47,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5217, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5382, PETRI_PLACES=299, PETRI_TRANSITIONS=330} [2024-06-28 01:30:47,951 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 259 predicate places. [2024-06-28 01:30:47,951 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 330 transitions, 5382 flow [2024-06-28 01:30:47,952 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 01:30:47,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:47,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:47,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:30:47,952 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 01:30:47,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:47,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1742287587, now seen corresponding path program 3 times [2024-06-28 01:30:47,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:47,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74063223] [2024-06-28 01:30:47,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:47,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:48,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:48,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74063223] [2024-06-28 01:30:48,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74063223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:48,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:48,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:48,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103462075] [2024-06-28 01:30:48,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:48,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:48,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:48,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:48,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 330 transitions, 5382 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 01:30:48,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:48,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:48,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:49,254 INFO L124 PetriNetUnfolderBase]: 1599/2822 cut-off events. [2024-06-28 01:30:49,254 INFO L125 PetriNetUnfolderBase]: For 118682/118682 co-relation queries the response was YES. [2024-06-28 01:30:49,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22184 conditions, 2822 events. 1599/2822 cut-off events. For 118682/118682 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16723 event pairs, 477 based on Foata normal form. 2/2643 useless extension candidates. Maximal degree in co-relation 22044. Up to 2539 conditions per place. [2024-06-28 01:30:49,285 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 319 selfloop transitions, 32 changer transitions 0/358 dead transitions. [2024-06-28 01:30:49,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 358 transitions, 6414 flow [2024-06-28 01:30:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:30:49,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-28 01:30:49,287 INFO L175 Difference]: Start difference. First operand has 299 places, 330 transitions, 5382 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:30:49,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 358 transitions, 6414 flow [2024-06-28 01:30:49,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 358 transitions, 6269 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:30:49,843 INFO L231 Difference]: Finished difference. Result has 303 places, 332 transitions, 5366 flow [2024-06-28 01:30:49,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5237, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5366, PETRI_PLACES=303, PETRI_TRANSITIONS=332} [2024-06-28 01:30:49,843 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-28 01:30:49,844 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 332 transitions, 5366 flow [2024-06-28 01:30:49,844 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 01:30:49,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:49,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:49,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:30:49,844 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 01:30:49,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1748954261, now seen corresponding path program 9 times [2024-06-28 01:30:49,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:49,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176251088] [2024-06-28 01:30:49,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:49,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:50,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:50,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:50,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176251088] [2024-06-28 01:30:50,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176251088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:50,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:50,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525320577] [2024-06-28 01:30:50,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:50,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:50,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:50,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:50,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:50,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:50,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 332 transitions, 5366 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 01:30:50,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:50,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:50,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:51,505 INFO L124 PetriNetUnfolderBase]: 1615/2846 cut-off events. [2024-06-28 01:30:51,505 INFO L125 PetriNetUnfolderBase]: For 121072/121072 co-relation queries the response was YES. [2024-06-28 01:30:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22365 conditions, 2846 events. 1615/2846 cut-off events. For 121072/121072 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16850 event pairs, 397 based on Foata normal form. 2/2669 useless extension candidates. Maximal degree in co-relation 22224. Up to 2524 conditions per place. [2024-06-28 01:30:51,539 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 288 selfloop transitions, 63 changer transitions 0/358 dead transitions. [2024-06-28 01:30:51,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 358 transitions, 6306 flow [2024-06-28 01:30:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-28 01:30:51,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-28 01:30:51,540 INFO L175 Difference]: Start difference. First operand has 303 places, 332 transitions, 5366 flow. Second operand 10 states and 151 transitions. [2024-06-28 01:30:51,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 358 transitions, 6306 flow [2024-06-28 01:30:52,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 358 transitions, 6220 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:30:52,112 INFO L231 Difference]: Finished difference. Result has 304 places, 334 transitions, 5527 flow [2024-06-28 01:30:52,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5527, PETRI_PLACES=304, PETRI_TRANSITIONS=334} [2024-06-28 01:30:52,112 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 264 predicate places. [2024-06-28 01:30:52,113 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 334 transitions, 5527 flow [2024-06-28 01:30:52,113 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 01:30:52,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:52,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:52,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:30:52,113 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 01:30:52,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:52,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1742518227, now seen corresponding path program 4 times [2024-06-28 01:30:52,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:52,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124816526] [2024-06-28 01:30:52,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:52,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:52,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:52,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124816526] [2024-06-28 01:30:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124816526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:52,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648579881] [2024-06-28 01:30:52,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:52,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:52,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:52,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:52,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 334 transitions, 5527 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 01:30:52,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:52,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:53,552 INFO L124 PetriNetUnfolderBase]: 1611/2844 cut-off events. [2024-06-28 01:30:53,553 INFO L125 PetriNetUnfolderBase]: For 120066/120066 co-relation queries the response was YES. [2024-06-28 01:30:53,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22255 conditions, 2844 events. 1611/2844 cut-off events. For 120066/120066 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16850 event pairs, 485 based on Foata normal form. 2/2665 useless extension candidates. Maximal degree in co-relation 22113. Up to 2564 conditions per place. [2024-06-28 01:30:53,581 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 319 selfloop transitions, 33 changer transitions 0/359 dead transitions. [2024-06-28 01:30:53,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 359 transitions, 6363 flow [2024-06-28 01:30:53,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:30:53,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:30:53,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:30:53,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-28 01:30:53,583 INFO L175 Difference]: Start difference. First operand has 304 places, 334 transitions, 5527 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:30:53,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 359 transitions, 6363 flow [2024-06-28 01:30:54,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 359 transitions, 6112 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:54,155 INFO L231 Difference]: Finished difference. Result has 307 places, 334 transitions, 5347 flow [2024-06-28 01:30:54,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5276, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5347, PETRI_PLACES=307, PETRI_TRANSITIONS=334} [2024-06-28 01:30:54,155 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-28 01:30:54,155 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 334 transitions, 5347 flow [2024-06-28 01:30:54,155 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 01:30:54,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:54,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:54,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:30:54,156 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 01:30:54,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:54,156 INFO L85 PathProgramCache]: Analyzing trace with hash -474821729, now seen corresponding path program 1 times [2024-06-28 01:30:54,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:54,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538582804] [2024-06-28 01:30:54,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:54,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:54,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:54,883 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 01:30:54,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:54,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538582804] [2024-06-28 01:30:54,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538582804] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:54,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:54,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:30:54,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829582831] [2024-06-28 01:30:54,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:54,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:30:54,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:54,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:30:54,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:30:54,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:54,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 334 transitions, 5347 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 01:30:54,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:54,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:54,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:55,664 INFO L124 PetriNetUnfolderBase]: 1627/2873 cut-off events. [2024-06-28 01:30:55,664 INFO L125 PetriNetUnfolderBase]: For 121437/121437 co-relation queries the response was YES. [2024-06-28 01:30:55,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22284 conditions, 2873 events. 1627/2873 cut-off events. For 121437/121437 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 17110 event pairs, 495 based on Foata normal form. 2/2694 useless extension candidates. Maximal degree in co-relation 22141. Up to 2643 conditions per place. [2024-06-28 01:30:55,699 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 326 selfloop transitions, 25 changer transitions 0/358 dead transitions. [2024-06-28 01:30:55,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 358 transitions, 6277 flow [2024-06-28 01:30:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:55,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:55,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:30:55,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:30:55,701 INFO L175 Difference]: Start difference. First operand has 307 places, 334 transitions, 5347 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:30:55,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 358 transitions, 6277 flow [2024-06-28 01:30:56,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 358 transitions, 6192 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:30:56,334 INFO L231 Difference]: Finished difference. Result has 306 places, 336 transitions, 5435 flow [2024-06-28 01:30:56,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5435, PETRI_PLACES=306, PETRI_TRANSITIONS=336} [2024-06-28 01:30:56,334 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 266 predicate places. [2024-06-28 01:30:56,334 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 336 transitions, 5435 flow [2024-06-28 01:30:56,335 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 01:30:56,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:56,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:56,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:30:56,335 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 01:30:56,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:56,335 INFO L85 PathProgramCache]: Analyzing trace with hash -481501733, now seen corresponding path program 10 times [2024-06-28 01:30:56,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:56,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733646188] [2024-06-28 01:30:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:56,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:56,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:57,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:57,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733646188] [2024-06-28 01:30:57,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733646188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:57,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:57,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:57,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254247241] [2024-06-28 01:30:57,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:57,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:57,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:57,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:57,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:57,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:57,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 336 transitions, 5435 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 01:30:57,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:57,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:57,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:30:58,072 INFO L124 PetriNetUnfolderBase]: 1655/2934 cut-off events. [2024-06-28 01:30:58,072 INFO L125 PetriNetUnfolderBase]: For 129487/129487 co-relation queries the response was YES. [2024-06-28 01:30:58,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22904 conditions, 2934 events. 1655/2934 cut-off events. For 129487/129487 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17598 event pairs, 403 based on Foata normal form. 2/2753 useless extension candidates. Maximal degree in co-relation 22760. Up to 2472 conditions per place. [2024-06-28 01:30:58,099 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 290 selfloop transitions, 71 changer transitions 0/368 dead transitions. [2024-06-28 01:30:58,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 368 transitions, 6495 flow [2024-06-28 01:30:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:30:58,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:30:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:30:58,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:30:58,100 INFO L175 Difference]: Start difference. First operand has 306 places, 336 transitions, 5435 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:30:58,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 368 transitions, 6495 flow [2024-06-28 01:30:58,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 368 transitions, 6338 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:30:58,735 INFO L231 Difference]: Finished difference. Result has 309 places, 340 transitions, 5634 flow [2024-06-28 01:30:58,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5278, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5634, PETRI_PLACES=309, PETRI_TRANSITIONS=340} [2024-06-28 01:30:58,735 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 269 predicate places. [2024-06-28 01:30:58,736 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 340 transitions, 5634 flow [2024-06-28 01:30:58,736 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 01:30:58,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:30:58,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:30:58,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:30:58,736 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 01:30:58,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:30:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1622464357, now seen corresponding path program 11 times [2024-06-28 01:30:58,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:30:58,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324282078] [2024-06-28 01:30:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:30:58,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:30:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:30:59,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:30:59,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:30:59,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324282078] [2024-06-28 01:30:59,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324282078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:30:59,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:30:59,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:30:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467192339] [2024-06-28 01:30:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:30:59,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:30:59,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:30:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:30:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:30:59,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:30:59,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 340 transitions, 5634 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 01:30:59,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:30:59,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:30:59,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:00,394 INFO L124 PetriNetUnfolderBase]: 1679/2985 cut-off events. [2024-06-28 01:31:00,395 INFO L125 PetriNetUnfolderBase]: For 136313/136313 co-relation queries the response was YES. [2024-06-28 01:31:00,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23494 conditions, 2985 events. 1679/2985 cut-off events. For 136313/136313 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18055 event pairs, 303 based on Foata normal form. 2/2803 useless extension candidates. Maximal degree in co-relation 23348. Up to 2262 conditions per place. [2024-06-28 01:31:00,431 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 291 selfloop transitions, 73 changer transitions 0/371 dead transitions. [2024-06-28 01:31:00,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 371 transitions, 6668 flow [2024-06-28 01:31:00,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:00,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:31:00,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-06-28 01:31:00,432 INFO L175 Difference]: Start difference. First operand has 309 places, 340 transitions, 5634 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:31:00,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 371 transitions, 6668 flow [2024-06-28 01:31:01,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 371 transitions, 6394 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:01,144 INFO L231 Difference]: Finished difference. Result has 313 places, 343 transitions, 5731 flow [2024-06-28 01:31:01,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5360, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5731, PETRI_PLACES=313, PETRI_TRANSITIONS=343} [2024-06-28 01:31:01,144 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 273 predicate places. [2024-06-28 01:31:01,145 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 343 transitions, 5731 flow [2024-06-28 01:31:01,145 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 01:31:01,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:01,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:01,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:31:01,145 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 01:31:01,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:01,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1866455535, now seen corresponding path program 12 times [2024-06-28 01:31:01,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899655533] [2024-06-28 01:31:01,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:01,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:01,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:01,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899655533] [2024-06-28 01:31:01,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899655533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:01,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:01,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:01,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194282187] [2024-06-28 01:31:01,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:01,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:01,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:01,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:01,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:01,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:01,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 343 transitions, 5731 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 01:31:01,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:01,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:01,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:02,737 INFO L124 PetriNetUnfolderBase]: 1703/3039 cut-off events. [2024-06-28 01:31:02,737 INFO L125 PetriNetUnfolderBase]: For 141135/141135 co-relation queries the response was YES. [2024-06-28 01:31:02,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24176 conditions, 3039 events. 1703/3039 cut-off events. For 141135/141135 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18489 event pairs, 431 based on Foata normal form. 2/2852 useless extension candidates. Maximal degree in co-relation 24027. Up to 2483 conditions per place. [2024-06-28 01:31:02,775 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 295 selfloop transitions, 71 changer transitions 0/373 dead transitions. [2024-06-28 01:31:02,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 373 transitions, 6773 flow [2024-06-28 01:31:02,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:02,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:02,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:31:02,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-06-28 01:31:02,776 INFO L175 Difference]: Start difference. First operand has 313 places, 343 transitions, 5731 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:31:02,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 373 transitions, 6773 flow [2024-06-28 01:31:03,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 373 transitions, 6492 flow, removed 92 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:03,486 INFO L231 Difference]: Finished difference. Result has 317 places, 346 transitions, 5810 flow [2024-06-28 01:31:03,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5810, PETRI_PLACES=317, PETRI_TRANSITIONS=346} [2024-06-28 01:31:03,487 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-28 01:31:03,487 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 346 transitions, 5810 flow [2024-06-28 01:31:03,487 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 01:31:03,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:03,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:03,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:31:03,488 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 01:31:03,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:03,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1652164311, now seen corresponding path program 3 times [2024-06-28 01:31:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:03,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026747457] [2024-06-28 01:31:03,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:04,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026747457] [2024-06-28 01:31:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026747457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:04,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801018244] [2024-06-28 01:31:04,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:04,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:04,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:04,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:04,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:04,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 346 transitions, 5810 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 01:31:04,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:04,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:04,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:05,035 INFO L124 PetriNetUnfolderBase]: 1701/3038 cut-off events. [2024-06-28 01:31:05,035 INFO L125 PetriNetUnfolderBase]: For 124780/124780 co-relation queries the response was YES. [2024-06-28 01:31:05,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23690 conditions, 3038 events. 1701/3038 cut-off events. For 124780/124780 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 18507 event pairs, 476 based on Foata normal form. 1/2853 useless extension candidates. Maximal degree in co-relation 23539. Up to 2594 conditions per place. [2024-06-28 01:31:05,070 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 275 selfloop transitions, 87 changer transitions 0/369 dead transitions. [2024-06-28 01:31:05,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 369 transitions, 6715 flow [2024-06-28 01:31:05,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:05,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 01:31:05,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2024-06-28 01:31:05,071 INFO L175 Difference]: Start difference. First operand has 317 places, 346 transitions, 5810 flow. Second operand 9 states and 134 transitions. [2024-06-28 01:31:05,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 369 transitions, 6715 flow [2024-06-28 01:31:05,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 369 transitions, 6457 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:05,786 INFO L231 Difference]: Finished difference. Result has 320 places, 348 transitions, 5829 flow [2024-06-28 01:31:05,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5552, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5829, PETRI_PLACES=320, PETRI_TRANSITIONS=348} [2024-06-28 01:31:05,787 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-28 01:31:05,788 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 348 transitions, 5829 flow [2024-06-28 01:31:05,788 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 01:31:05,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:05,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:31:05,789 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 01:31:05,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:05,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1866450885, now seen corresponding path program 13 times [2024-06-28 01:31:05,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:05,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254785834] [2024-06-28 01:31:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:05,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:05,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:06,678 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 01:31:06,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:06,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254785834] [2024-06-28 01:31:06,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254785834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:06,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:06,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:06,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521835252] [2024-06-28 01:31:06,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:06,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:06,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:06,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:06,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:06,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 348 transitions, 5829 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 01:31:06,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:06,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:06,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:07,638 INFO L124 PetriNetUnfolderBase]: 1717/3066 cut-off events. [2024-06-28 01:31:07,638 INFO L125 PetriNetUnfolderBase]: For 121342/121342 co-relation queries the response was YES. [2024-06-28 01:31:07,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23719 conditions, 3066 events. 1717/3066 cut-off events. For 121342/121342 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18773 event pairs, 482 based on Foata normal form. 2/2881 useless extension candidates. Maximal degree in co-relation 23567. Up to 2602 conditions per place. [2024-06-28 01:31:07,675 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 287 selfloop transitions, 79 changer transitions 0/373 dead transitions. [2024-06-28 01:31:07,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 373 transitions, 6791 flow [2024-06-28 01:31:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:07,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 01:31:07,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-06-28 01:31:07,677 INFO L175 Difference]: Start difference. First operand has 320 places, 348 transitions, 5829 flow. Second operand 9 states and 136 transitions. [2024-06-28 01:31:07,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 373 transitions, 6791 flow [2024-06-28 01:31:08,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 373 transitions, 6597 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:08,423 INFO L231 Difference]: Finished difference. Result has 322 places, 350 transitions, 5925 flow [2024-06-28 01:31:08,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5635, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5925, PETRI_PLACES=322, PETRI_TRANSITIONS=350} [2024-06-28 01:31:08,424 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 282 predicate places. [2024-06-28 01:31:08,424 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 350 transitions, 5925 flow [2024-06-28 01:31:08,424 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 01:31:08,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:08,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:08,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:31:08,424 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 01:31:08,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1778685421, now seen corresponding path program 5 times [2024-06-28 01:31:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:08,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068532723] [2024-06-28 01:31:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:09,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:09,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068532723] [2024-06-28 01:31:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068532723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:09,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:09,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:09,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795728122] [2024-06-28 01:31:09,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:09,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:09,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:09,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:09,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:09,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:09,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 350 transitions, 5925 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 01:31:09,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:09,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:09,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:10,132 INFO L124 PetriNetUnfolderBase]: 1722/3067 cut-off events. [2024-06-28 01:31:10,133 INFO L125 PetriNetUnfolderBase]: For 122026/122026 co-relation queries the response was YES. [2024-06-28 01:31:10,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23836 conditions, 3067 events. 1722/3067 cut-off events. For 122026/122026 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18682 event pairs, 446 based on Foata normal form. 2/2876 useless extension candidates. Maximal degree in co-relation 23683. Up to 2639 conditions per place. [2024-06-28 01:31:10,165 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 296 selfloop transitions, 70 changer transitions 0/373 dead transitions. [2024-06-28 01:31:10,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 373 transitions, 6829 flow [2024-06-28 01:31:10,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:10,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:10,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 01:31:10,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:31:10,166 INFO L175 Difference]: Start difference. First operand has 322 places, 350 transitions, 5925 flow. Second operand 9 states and 135 transitions. [2024-06-28 01:31:10,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 373 transitions, 6829 flow [2024-06-28 01:31:10,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 373 transitions, 6577 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:10,798 INFO L231 Difference]: Finished difference. Result has 324 places, 352 transitions, 5899 flow [2024-06-28 01:31:10,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5673, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5899, PETRI_PLACES=324, PETRI_TRANSITIONS=352} [2024-06-28 01:31:10,799 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 284 predicate places. [2024-06-28 01:31:10,799 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 352 transitions, 5899 flow [2024-06-28 01:31:10,799 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 01:31:10,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:10,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:10,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:31:10,800 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 01:31:10,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:10,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1822866555, now seen corresponding path program 14 times [2024-06-28 01:31:10,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701776928] [2024-06-28 01:31:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:10,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:11,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:11,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:11,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701776928] [2024-06-28 01:31:11,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701776928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:11,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:11,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:11,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603910540] [2024-06-28 01:31:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:11,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:11,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:11,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:11,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 352 transitions, 5899 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 01:31:11,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:11,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:11,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:12,529 INFO L124 PetriNetUnfolderBase]: 1738/3095 cut-off events. [2024-06-28 01:31:12,529 INFO L125 PetriNetUnfolderBase]: For 118654/118654 co-relation queries the response was YES. [2024-06-28 01:31:12,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23888 conditions, 3095 events. 1738/3095 cut-off events. For 118654/118654 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 18877 event pairs, 433 based on Foata normal form. 2/2906 useless extension candidates. Maximal degree in co-relation 23734. Up to 2590 conditions per place. [2024-06-28 01:31:12,565 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 291 selfloop transitions, 78 changer transitions 0/376 dead transitions. [2024-06-28 01:31:12,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 376 transitions, 6863 flow [2024-06-28 01:31:12,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:31:12,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:31:12,567 INFO L175 Difference]: Start difference. First operand has 324 places, 352 transitions, 5899 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:31:12,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 376 transitions, 6863 flow [2024-06-28 01:31:13,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 376 transitions, 6705 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:13,263 INFO L231 Difference]: Finished difference. Result has 326 places, 354 transitions, 6015 flow [2024-06-28 01:31:13,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5741, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6015, PETRI_PLACES=326, PETRI_TRANSITIONS=354} [2024-06-28 01:31:13,264 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2024-06-28 01:31:13,264 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 354 transitions, 6015 flow [2024-06-28 01:31:13,264 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 01:31:13,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:13,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:13,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:31:13,264 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 01:31:13,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1822861905, now seen corresponding path program 15 times [2024-06-28 01:31:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:13,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888230129] [2024-06-28 01:31:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:13,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:14,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:14,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888230129] [2024-06-28 01:31:14,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888230129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:14,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:14,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:14,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939022948] [2024-06-28 01:31:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:14,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:14,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:14,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:14,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:14,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:14,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 354 transitions, 6015 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 01:31:14,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:14,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:14,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:14,976 INFO L124 PetriNetUnfolderBase]: 1785/3194 cut-off events. [2024-06-28 01:31:14,976 INFO L125 PetriNetUnfolderBase]: For 133550/133550 co-relation queries the response was YES. [2024-06-28 01:31:15,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25032 conditions, 3194 events. 1785/3194 cut-off events. For 133550/133550 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19718 event pairs, 420 based on Foata normal form. 2/3001 useless extension candidates. Maximal degree in co-relation 24877. Up to 2544 conditions per place. [2024-06-28 01:31:15,014 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 294 selfloop transitions, 85 changer transitions 0/386 dead transitions. [2024-06-28 01:31:15,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 386 transitions, 7315 flow [2024-06-28 01:31:15,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:15,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-28 01:31:15,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:31:15,016 INFO L175 Difference]: Start difference. First operand has 326 places, 354 transitions, 6015 flow. Second operand 9 states and 144 transitions. [2024-06-28 01:31:15,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 386 transitions, 7315 flow [2024-06-28 01:31:15,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 386 transitions, 7051 flow, removed 57 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:15,736 INFO L231 Difference]: Finished difference. Result has 329 places, 358 transitions, 6132 flow [2024-06-28 01:31:15,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5761, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6132, PETRI_PLACES=329, PETRI_TRANSITIONS=358} [2024-06-28 01:31:15,736 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 289 predicate places. [2024-06-28 01:31:15,736 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 358 transitions, 6132 flow [2024-06-28 01:31:15,737 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 01:31:15,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:15,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:15,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:31:15,737 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 01:31:15,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:15,737 INFO L85 PathProgramCache]: Analyzing trace with hash -167205883, now seen corresponding path program 16 times [2024-06-28 01:31:15,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:15,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545123926] [2024-06-28 01:31:15,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:15,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545123926] [2024-06-28 01:31:16,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545123926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868481062] [2024-06-28 01:31:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:16,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:16,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:16,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:16,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:16,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 358 transitions, 6132 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 01:31:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:17,466 INFO L124 PetriNetUnfolderBase]: 1782/3193 cut-off events. [2024-06-28 01:31:17,466 INFO L125 PetriNetUnfolderBase]: For 126639/126639 co-relation queries the response was YES. [2024-06-28 01:31:17,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24794 conditions, 3193 events. 1782/3193 cut-off events. For 126639/126639 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 19789 event pairs, 558 based on Foata normal form. 2/2997 useless extension candidates. Maximal degree in co-relation 24637. Up to 2885 conditions per place. [2024-06-28 01:31:17,504 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 343 selfloop transitions, 30 changer transitions 0/380 dead transitions. [2024-06-28 01:31:17,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 380 transitions, 7097 flow [2024-06-28 01:31:17,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:17,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 01:31:17,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-06-28 01:31:17,505 INFO L175 Difference]: Start difference. First operand has 329 places, 358 transitions, 6132 flow. Second operand 9 states and 131 transitions. [2024-06-28 01:31:17,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 380 transitions, 7097 flow [2024-06-28 01:31:18,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 380 transitions, 6864 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:18,170 INFO L231 Difference]: Finished difference. Result has 333 places, 360 transitions, 6082 flow [2024-06-28 01:31:18,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5905, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6082, PETRI_PLACES=333, PETRI_TRANSITIONS=360} [2024-06-28 01:31:18,170 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 293 predicate places. [2024-06-28 01:31:18,170 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 360 transitions, 6082 flow [2024-06-28 01:31:18,170 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 01:31:18,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:18,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:31:18,171 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 01:31:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1829302589, now seen corresponding path program 6 times [2024-06-28 01:31:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574782083] [2024-06-28 01:31:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:19,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:19,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574782083] [2024-06-28 01:31:19,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574782083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:19,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:19,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:19,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279664813] [2024-06-28 01:31:19,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:19,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:19,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:19,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 360 transitions, 6082 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 01:31:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:19,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:20,059 INFO L124 PetriNetUnfolderBase]: 1795/3212 cut-off events. [2024-06-28 01:31:20,060 INFO L125 PetriNetUnfolderBase]: For 122179/122179 co-relation queries the response was YES. [2024-06-28 01:31:20,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24723 conditions, 3212 events. 1795/3212 cut-off events. For 122179/122179 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19876 event pairs, 551 based on Foata normal form. 2/3011 useless extension candidates. Maximal degree in co-relation 24564. Up to 2858 conditions per place. [2024-06-28 01:31:20,096 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 339 selfloop transitions, 39 changer transitions 0/385 dead transitions. [2024-06-28 01:31:20,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 385 transitions, 7037 flow [2024-06-28 01:31:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:20,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:31:20,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:31:20,098 INFO L175 Difference]: Start difference. First operand has 333 places, 360 transitions, 6082 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:31:20,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 385 transitions, 7037 flow [2024-06-28 01:31:20,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 385 transitions, 6891 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:20,830 INFO L231 Difference]: Finished difference. Result has 337 places, 364 transitions, 6127 flow [2024-06-28 01:31:20,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5936, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6127, PETRI_PLACES=337, PETRI_TRANSITIONS=364} [2024-06-28 01:31:20,830 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 297 predicate places. [2024-06-28 01:31:20,830 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 364 transitions, 6127 flow [2024-06-28 01:31:20,830 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 01:31:20,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:20,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:31:20,831 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 01:31:20,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash -166959619, now seen corresponding path program 2 times [2024-06-28 01:31:20,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:20,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536577112] [2024-06-28 01:31:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:20,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:21,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:21,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536577112] [2024-06-28 01:31:21,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536577112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:21,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:21,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:21,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054045657] [2024-06-28 01:31:21,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:21,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:21,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:21,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:21,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:21,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:21,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 364 transitions, 6127 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 01:31:21,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:21,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:21,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:22,516 INFO L124 PetriNetUnfolderBase]: 1811/3241 cut-off events. [2024-06-28 01:31:22,517 INFO L125 PetriNetUnfolderBase]: For 125192/125192 co-relation queries the response was YES. [2024-06-28 01:31:22,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25056 conditions, 3241 events. 1811/3241 cut-off events. For 125192/125192 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20111 event pairs, 570 based on Foata normal form. 2/3041 useless extension candidates. Maximal degree in co-relation 24895. Up to 2932 conditions per place. [2024-06-28 01:31:22,553 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 346 selfloop transitions, 32 changer transitions 0/385 dead transitions. [2024-06-28 01:31:22,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 385 transitions, 7099 flow [2024-06-28 01:31:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:22,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-06-28 01:31:22,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404320987654321 [2024-06-28 01:31:22,554 INFO L175 Difference]: Start difference. First operand has 337 places, 364 transitions, 6127 flow. Second operand 9 states and 131 transitions. [2024-06-28 01:31:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 385 transitions, 7099 flow [2024-06-28 01:31:23,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 385 transitions, 6974 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:23,316 INFO L231 Difference]: Finished difference. Result has 338 places, 366 transitions, 6192 flow [2024-06-28 01:31:23,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6002, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6192, PETRI_PLACES=338, PETRI_TRANSITIONS=366} [2024-06-28 01:31:23,317 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 298 predicate places. [2024-06-28 01:31:23,318 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 366 transitions, 6192 flow [2024-06-28 01:31:23,318 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 01:31:23,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:23,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:23,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:31:23,318 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 01:31:23,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:23,319 INFO L85 PathProgramCache]: Analyzing trace with hash -43128085, now seen corresponding path program 7 times [2024-06-28 01:31:23,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:23,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137430007] [2024-06-28 01:31:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:24,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137430007] [2024-06-28 01:31:24,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137430007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:24,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570510455] [2024-06-28 01:31:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:24,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:24,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:24,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:24,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 366 transitions, 6192 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 01:31:24,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:24,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:24,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:24,939 INFO L124 PetriNetUnfolderBase]: 1807/3235 cut-off events. [2024-06-28 01:31:24,939 INFO L125 PetriNetUnfolderBase]: For 120180/120180 co-relation queries the response was YES. [2024-06-28 01:31:24,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24750 conditions, 3235 events. 1807/3235 cut-off events. For 120180/120180 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 20108 event pairs, 552 based on Foata normal form. 2/3033 useless extension candidates. Maximal degree in co-relation 24589. Up to 2824 conditions per place. [2024-06-28 01:31:24,976 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 333 selfloop transitions, 48 changer transitions 0/388 dead transitions. [2024-06-28 01:31:24,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 7074 flow [2024-06-28 01:31:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 01:31:24,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 01:31:24,978 INFO L175 Difference]: Start difference. First operand has 338 places, 366 transitions, 6192 flow. Second operand 10 states and 147 transitions. [2024-06-28 01:31:24,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 7074 flow [2024-06-28 01:31:25,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 388 transitions, 6882 flow, removed 67 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:25,625 INFO L231 Difference]: Finished difference. Result has 341 places, 366 transitions, 6104 flow [2024-06-28 01:31:25,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6000, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6104, PETRI_PLACES=341, PETRI_TRANSITIONS=366} [2024-06-28 01:31:25,626 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2024-06-28 01:31:25,626 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 366 transitions, 6104 flow [2024-06-28 01:31:25,626 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 01:31:25,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:25,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:31:25,627 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 01:31:25,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1969303001, now seen corresponding path program 17 times [2024-06-28 01:31:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:25,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823642291] [2024-06-28 01:31:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:26,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:26,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823642291] [2024-06-28 01:31:26,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823642291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262782983] [2024-06-28 01:31:26,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:26,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:26,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 366 transitions, 6104 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 01:31:26,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:26,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:26,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:27,242 INFO L124 PetriNetUnfolderBase]: 1823/3264 cut-off events. [2024-06-28 01:31:27,242 INFO L125 PetriNetUnfolderBase]: For 118922/118922 co-relation queries the response was YES. [2024-06-28 01:31:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24837 conditions, 3264 events. 1823/3264 cut-off events. For 118922/118922 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20316 event pairs, 572 based on Foata normal form. 2/3061 useless extension candidates. Maximal degree in co-relation 24675. Up to 2978 conditions per place. [2024-06-28 01:31:27,282 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 353 selfloop transitions, 26 changer transitions 0/386 dead transitions. [2024-06-28 01:31:27,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 386 transitions, 7072 flow [2024-06-28 01:31:27,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:27,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:27,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 01:31:27,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2024-06-28 01:31:27,284 INFO L175 Difference]: Start difference. First operand has 341 places, 366 transitions, 6104 flow. Second operand 9 states and 130 transitions. [2024-06-28 01:31:27,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 386 transitions, 7072 flow [2024-06-28 01:31:27,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 386 transitions, 6924 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 01:31:27,958 INFO L231 Difference]: Finished difference. Result has 339 places, 368 transitions, 6125 flow [2024-06-28 01:31:27,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5956, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6125, PETRI_PLACES=339, PETRI_TRANSITIONS=368} [2024-06-28 01:31:27,959 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 299 predicate places. [2024-06-28 01:31:27,959 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 368 transitions, 6125 flow [2024-06-28 01:31:27,959 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 01:31:27,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:27,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:31:27,960 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 01:31:27,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:27,960 INFO L85 PathProgramCache]: Analyzing trace with hash 498008455, now seen corresponding path program 3 times [2024-06-28 01:31:27,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:27,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704469890] [2024-06-28 01:31:27,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:27,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:28,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:28,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:28,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704469890] [2024-06-28 01:31:28,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704469890] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:28,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:28,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:28,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366028639] [2024-06-28 01:31:28,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:28,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:28,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:28,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:28,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:28,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:28,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 368 transitions, 6125 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 01:31:28,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:28,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:28,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:29,544 INFO L124 PetriNetUnfolderBase]: 1839/3293 cut-off events. [2024-06-28 01:31:29,545 INFO L125 PetriNetUnfolderBase]: For 122453/122453 co-relation queries the response was YES. [2024-06-28 01:31:29,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25038 conditions, 3293 events. 1839/3293 cut-off events. For 122453/122453 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20522 event pairs, 577 based on Foata normal form. 2/3089 useless extension candidates. Maximal degree in co-relation 24876. Up to 3006 conditions per place. [2024-06-28 01:31:29,584 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 353 selfloop transitions, 27 changer transitions 0/387 dead transitions. [2024-06-28 01:31:29,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 387 transitions, 7097 flow [2024-06-28 01:31:29,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:29,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-28 01:31:29,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2024-06-28 01:31:29,586 INFO L175 Difference]: Start difference. First operand has 339 places, 368 transitions, 6125 flow. Second operand 9 states and 130 transitions. [2024-06-28 01:31:29,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 387 transitions, 7097 flow [2024-06-28 01:31:30,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 387 transitions, 6944 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:30,268 INFO L231 Difference]: Finished difference. Result has 341 places, 370 transitions, 6151 flow [2024-06-28 01:31:30,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5972, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6151, PETRI_PLACES=341, PETRI_TRANSITIONS=370} [2024-06-28 01:31:30,269 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 301 predicate places. [2024-06-28 01:31:30,269 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 370 transitions, 6151 flow [2024-06-28 01:31:30,269 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 01:31:30,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:30,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:30,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:31:30,269 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 01:31:30,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1577524977, now seen corresponding path program 18 times [2024-06-28 01:31:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158436846] [2024-06-28 01:31:30,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:30,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:31,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:31,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:31,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158436846] [2024-06-28 01:31:31,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158436846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:31,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:31,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:31,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633833544] [2024-06-28 01:31:31,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:31,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:31,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:31,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:31,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:31,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:31,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 370 transitions, 6151 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 01:31:31,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:31,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:31,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:31,864 INFO L124 PetriNetUnfolderBase]: 1855/3318 cut-off events. [2024-06-28 01:31:31,864 INFO L125 PetriNetUnfolderBase]: For 125527/125527 co-relation queries the response was YES. [2024-06-28 01:31:31,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25205 conditions, 3318 events. 1855/3318 cut-off events. For 125527/125527 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20694 event pairs, 453 based on Foata normal form. 2/3115 useless extension candidates. Maximal degree in co-relation 25042. Up to 2745 conditions per place. [2024-06-28 01:31:31,903 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 302 selfloop transitions, 83 changer transitions 0/392 dead transitions. [2024-06-28 01:31:31,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 392 transitions, 7149 flow [2024-06-28 01:31:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-28 01:31:31,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:31:31,905 INFO L175 Difference]: Start difference. First operand has 341 places, 370 transitions, 6151 flow. Second operand 9 states and 138 transitions. [2024-06-28 01:31:31,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 392 transitions, 7149 flow [2024-06-28 01:31:32,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 392 transitions, 6986 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:32,606 INFO L231 Difference]: Finished difference. Result has 343 places, 372 transitions, 6277 flow [2024-06-28 01:31:32,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5988, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6277, PETRI_PLACES=343, PETRI_TRANSITIONS=372} [2024-06-28 01:31:32,606 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 303 predicate places. [2024-06-28 01:31:32,607 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 372 transitions, 6277 flow [2024-06-28 01:31:32,607 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 01:31:32,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:32,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:31:32,607 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 01:31:32,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash -680900361, now seen corresponding path program 8 times [2024-06-28 01:31:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:32,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519200500] [2024-06-28 01:31:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:33,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:33,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519200500] [2024-06-28 01:31:33,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519200500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:33,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:33,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:33,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98602117] [2024-06-28 01:31:33,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:33,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:33,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:33,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:33,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:33,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:33,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 372 transitions, 6277 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 01:31:33,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:33,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:33,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:34,277 INFO L124 PetriNetUnfolderBase]: 1868/3340 cut-off events. [2024-06-28 01:31:34,277 INFO L125 PetriNetUnfolderBase]: For 127204/127204 co-relation queries the response was YES. [2024-06-28 01:31:34,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25414 conditions, 3340 events. 1868/3340 cut-off events. For 127204/127204 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 20871 event pairs, 578 based on Foata normal form. 2/3132 useless extension candidates. Maximal degree in co-relation 25250. Up to 2681 conditions per place. [2024-06-28 01:31:34,309 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 321 selfloop transitions, 70 changer transitions 0/398 dead transitions. [2024-06-28 01:31:34,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 398 transitions, 7685 flow [2024-06-28 01:31:34,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:31:34,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:31:34,311 INFO L175 Difference]: Start difference. First operand has 343 places, 372 transitions, 6277 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:31:34,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 398 transitions, 7685 flow [2024-06-28 01:31:35,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 398 transitions, 7412 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:35,044 INFO L231 Difference]: Finished difference. Result has 346 places, 374 transitions, 6199 flow [2024-06-28 01:31:35,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6004, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6199, PETRI_PLACES=346, PETRI_TRANSITIONS=374} [2024-06-28 01:31:35,044 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-06-28 01:31:35,045 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 374 transitions, 6199 flow [2024-06-28 01:31:35,045 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 01:31:35,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:35,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:35,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:31:35,045 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 01:31:35,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -49152903, now seen corresponding path program 19 times [2024-06-28 01:31:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326647503] [2024-06-28 01:31:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:35,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:35,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326647503] [2024-06-28 01:31:35,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326647503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:35,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851491586] [2024-06-28 01:31:35,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:35,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:35,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:35,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:35,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:35,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:35,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 374 transitions, 6199 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 01:31:35,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:35,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:35,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:36,808 INFO L124 PetriNetUnfolderBase]: 1899/3406 cut-off events. [2024-06-28 01:31:36,809 INFO L125 PetriNetUnfolderBase]: For 132316/132316 co-relation queries the response was YES. [2024-06-28 01:31:36,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25957 conditions, 3406 events. 1899/3406 cut-off events. For 132316/132316 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 21395 event pairs, 457 based on Foata normal form. 2/3198 useless extension candidates. Maximal degree in co-relation 25792. Up to 2734 conditions per place. [2024-06-28 01:31:36,848 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 311 selfloop transitions, 87 changer transitions 0/405 dead transitions. [2024-06-28 01:31:36,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 405 transitions, 7561 flow [2024-06-28 01:31:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:36,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:36,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:31:36,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-28 01:31:36,850 INFO L175 Difference]: Start difference. First operand has 346 places, 374 transitions, 6199 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:31:36,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 405 transitions, 7561 flow [2024-06-28 01:31:37,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 405 transitions, 7393 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:37,665 INFO L231 Difference]: Finished difference. Result has 348 places, 378 transitions, 6414 flow [2024-06-28 01:31:37,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6031, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6414, PETRI_PLACES=348, PETRI_TRANSITIONS=378} [2024-06-28 01:31:37,665 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 308 predicate places. [2024-06-28 01:31:37,665 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 378 transitions, 6414 flow [2024-06-28 01:31:37,665 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 01:31:37,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:37,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:37,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:31:37,666 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:37,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:37,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1975552167, now seen corresponding path program 9 times [2024-06-28 01:31:37,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960536007] [2024-06-28 01:31:37,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:37,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:38,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:38,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960536007] [2024-06-28 01:31:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960536007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:38,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:38,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562180486] [2024-06-28 01:31:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:38,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:38,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:38,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 378 transitions, 6414 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 01:31:38,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:38,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:38,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:39,621 INFO L124 PetriNetUnfolderBase]: 1895/3400 cut-off events. [2024-06-28 01:31:39,621 INFO L125 PetriNetUnfolderBase]: For 129875/129875 co-relation queries the response was YES. [2024-06-28 01:31:39,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25817 conditions, 3400 events. 1895/3400 cut-off events. For 129875/129875 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 21331 event pairs, 513 based on Foata normal form. 2/3189 useless extension candidates. Maximal degree in co-relation 25650. Up to 2300 conditions per place. [2024-06-28 01:31:39,663 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 252 selfloop transitions, 144 changer transitions 0/403 dead transitions. [2024-06-28 01:31:39,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 403 transitions, 7678 flow [2024-06-28 01:31:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:39,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:31:39,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 01:31:39,664 INFO L175 Difference]: Start difference. First operand has 348 places, 378 transitions, 6414 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:31:39,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 403 transitions, 7678 flow [2024-06-28 01:31:40,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 403 transitions, 7442 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-28 01:31:40,496 INFO L231 Difference]: Finished difference. Result has 353 places, 378 transitions, 6471 flow [2024-06-28 01:31:40,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6178, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6471, PETRI_PLACES=353, PETRI_TRANSITIONS=378} [2024-06-28 01:31:40,497 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 01:31:40,497 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 378 transitions, 6471 flow [2024-06-28 01:31:40,497 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 01:31:40,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:40,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:40,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:31:40,498 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:40,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:40,498 INFO L85 PathProgramCache]: Analyzing trace with hash -140656591, now seen corresponding path program 20 times [2024-06-28 01:31:40,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:40,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369588553] [2024-06-28 01:31:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:40,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369588553] [2024-06-28 01:31:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369588553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:41,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:41,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167933572] [2024-06-28 01:31:41,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:41,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:41,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:41,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:41,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 378 transitions, 6471 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 01:31:41,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:41,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:42,143 INFO L124 PetriNetUnfolderBase]: 1892/3399 cut-off events. [2024-06-28 01:31:42,143 INFO L125 PetriNetUnfolderBase]: For 122693/122693 co-relation queries the response was YES. [2024-06-28 01:31:42,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25830 conditions, 3399 events. 1892/3399 cut-off events. For 122693/122693 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21415 event pairs, 586 based on Foata normal form. 2/3187 useless extension candidates. Maximal degree in co-relation 25661. Up to 3048 conditions per place. [2024-06-28 01:31:42,183 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 356 selfloop transitions, 36 changer transitions 0/399 dead transitions. [2024-06-28 01:31:42,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 399 transitions, 7480 flow [2024-06-28 01:31:42,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:42,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 01:31:42,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104938271604938 [2024-06-28 01:31:42,185 INFO L175 Difference]: Start difference. First operand has 353 places, 378 transitions, 6471 flow. Second operand 9 states and 133 transitions. [2024-06-28 01:31:42,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 399 transitions, 7480 flow [2024-06-28 01:31:42,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 399 transitions, 7119 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 01:31:42,956 INFO L231 Difference]: Finished difference. Result has 353 places, 380 transitions, 6308 flow [2024-06-28 01:31:42,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6110, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6308, PETRI_PLACES=353, PETRI_TRANSITIONS=380} [2024-06-28 01:31:42,957 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-28 01:31:42,957 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 380 transitions, 6308 flow [2024-06-28 01:31:42,957 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 01:31:42,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:42,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:31:42,958 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:42,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash -140410327, now seen corresponding path program 4 times [2024-06-28 01:31:42,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:42,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547090621] [2024-06-28 01:31:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:43,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547090621] [2024-06-28 01:31:43,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547090621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:43,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:43,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:31:43,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902325618] [2024-06-28 01:31:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:31:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:31:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:31:43,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:43,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 380 transitions, 6308 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 01:31:43,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:43,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:43,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:44,488 INFO L124 PetriNetUnfolderBase]: 1908/3428 cut-off events. [2024-06-28 01:31:44,489 INFO L125 PetriNetUnfolderBase]: For 126350/126350 co-relation queries the response was YES. [2024-06-28 01:31:44,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25614 conditions, 3428 events. 1908/3428 cut-off events. For 126350/126350 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21612 event pairs, 601 based on Foata normal form. 2/3215 useless extension candidates. Maximal degree in co-relation 25444. Up to 3051 conditions per place. [2024-06-28 01:31:44,529 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 345 selfloop transitions, 47 changer transitions 0/399 dead transitions. [2024-06-28 01:31:44,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 399 transitions, 7314 flow [2024-06-28 01:31:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:31:44,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:31:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 135 transitions. [2024-06-28 01:31:44,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:31:44,531 INFO L175 Difference]: Start difference. First operand has 353 places, 380 transitions, 6308 flow. Second operand 9 states and 135 transitions. [2024-06-28 01:31:44,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 399 transitions, 7314 flow [2024-06-28 01:31:45,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 399 transitions, 7135 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:45,288 INFO L231 Difference]: Finished difference. Result has 355 places, 382 transitions, 6358 flow [2024-06-28 01:31:45,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6129, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6358, PETRI_PLACES=355, PETRI_TRANSITIONS=382} [2024-06-28 01:31:45,288 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 315 predicate places. [2024-06-28 01:31:45,289 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 382 transitions, 6358 flow [2024-06-28 01:31:45,289 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 01:31:45,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:45,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:45,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:31:45,289 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:45,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:45,290 INFO L85 PathProgramCache]: Analyzing trace with hash 497999775, now seen corresponding path program 10 times [2024-06-28 01:31:45,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:45,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437616307] [2024-06-28 01:31:45,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:45,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:46,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437616307] [2024-06-28 01:31:46,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437616307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:46,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:46,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:46,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986036404] [2024-06-28 01:31:46,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:46,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:46,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:46,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:46,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:46,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 382 transitions, 6358 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 01:31:46,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:46,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:47,117 INFO L124 PetriNetUnfolderBase]: 1921/3447 cut-off events. [2024-06-28 01:31:47,117 INFO L125 PetriNetUnfolderBase]: For 127097/127097 co-relation queries the response was YES. [2024-06-28 01:31:47,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25665 conditions, 3447 events. 1921/3447 cut-off events. For 127097/127097 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21740 event pairs, 595 based on Foata normal form. 2/3230 useless extension candidates. Maximal degree in co-relation 25494. Up to 3123 conditions per place. [2024-06-28 01:31:47,158 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 367 selfloop transitions, 31 changer transitions 0/405 dead transitions. [2024-06-28 01:31:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 405 transitions, 7324 flow [2024-06-28 01:31:47,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-28 01:31:47,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:31:47,159 INFO L175 Difference]: Start difference. First operand has 355 places, 382 transitions, 6358 flow. Second operand 10 states and 144 transitions. [2024-06-28 01:31:47,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 405 transitions, 7324 flow [2024-06-28 01:31:47,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 405 transitions, 7073 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-28 01:31:48,004 INFO L231 Difference]: Finished difference. Result has 359 places, 385 transitions, 6239 flow [2024-06-28 01:31:48,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6107, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6239, PETRI_PLACES=359, PETRI_TRANSITIONS=385} [2024-06-28 01:31:48,005 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 319 predicate places. [2024-06-28 01:31:48,005 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 385 transitions, 6239 flow [2024-06-28 01:31:48,005 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 01:31:48,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:48,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:48,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:31:48,005 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:48,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:48,006 INFO L85 PathProgramCache]: Analyzing trace with hash 497769135, now seen corresponding path program 11 times [2024-06-28 01:31:48,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:48,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890793955] [2024-06-28 01:31:48,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:48,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890793955] [2024-06-28 01:31:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890793955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:48,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987284465] [2024-06-28 01:31:48,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:48,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:48,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:48,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:48,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:48,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 385 transitions, 6239 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 01:31:48,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:48,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:48,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:49,897 INFO L124 PetriNetUnfolderBase]: 1917/3441 cut-off events. [2024-06-28 01:31:49,897 INFO L125 PetriNetUnfolderBase]: For 117921/117921 co-relation queries the response was YES. [2024-06-28 01:31:49,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25110 conditions, 3441 events. 1917/3441 cut-off events. For 117921/117921 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21706 event pairs, 594 based on Foata normal form. 2/3224 useless extension candidates. Maximal degree in co-relation 24937. Up to 3117 conditions per place. [2024-06-28 01:31:49,933 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 366 selfloop transitions, 31 changer transitions 0/404 dead transitions. [2024-06-28 01:31:49,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 404 transitions, 7141 flow [2024-06-28 01:31:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:49,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:49,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-28 01:31:49,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3972222222222222 [2024-06-28 01:31:49,934 INFO L175 Difference]: Start difference. First operand has 359 places, 385 transitions, 6239 flow. Second operand 10 states and 143 transitions. [2024-06-28 01:31:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 404 transitions, 7141 flow [2024-06-28 01:31:50,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 404 transitions, 7035 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-28 01:31:50,648 INFO L231 Difference]: Finished difference. Result has 363 places, 385 transitions, 6200 flow [2024-06-28 01:31:50,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6133, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6200, PETRI_PLACES=363, PETRI_TRANSITIONS=385} [2024-06-28 01:31:50,649 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-28 01:31:50,649 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 385 transitions, 6200 flow [2024-06-28 01:31:50,649 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 01:31:50,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:50,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:50,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:31:50,649 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:50,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:50,650 INFO L85 PathProgramCache]: Analyzing trace with hash -140649647, now seen corresponding path program 12 times [2024-06-28 01:31:50,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:50,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011940602] [2024-06-28 01:31:50,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:50,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:51,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:51,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:51,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011940602] [2024-06-28 01:31:51,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011940602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:51,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:51,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:51,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173089683] [2024-06-28 01:31:51,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:51,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:51,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:51,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:51,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:51,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:51,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 385 transitions, 6200 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 01:31:51,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:51,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:52,292 INFO L124 PetriNetUnfolderBase]: 1913/3435 cut-off events. [2024-06-28 01:31:52,293 INFO L125 PetriNetUnfolderBase]: For 112258/112258 co-relation queries the response was YES. [2024-06-28 01:31:52,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24812 conditions, 3435 events. 1913/3435 cut-off events. For 112258/112258 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21665 event pairs, 589 based on Foata normal form. 2/3218 useless extension candidates. Maximal degree in co-relation 24638. Up to 2761 conditions per place. [2024-06-28 01:31:52,332 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 322 selfloop transitions, 78 changer transitions 0/407 dead transitions. [2024-06-28 01:31:52,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 407 transitions, 7286 flow [2024-06-28 01:31:52,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:52,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:52,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:31:52,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 01:31:52,334 INFO L175 Difference]: Start difference. First operand has 363 places, 385 transitions, 6200 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:31:52,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 407 transitions, 7286 flow [2024-06-28 01:31:53,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 407 transitions, 7159 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 01:31:53,145 INFO L231 Difference]: Finished difference. Result has 363 places, 385 transitions, 6234 flow [2024-06-28 01:31:53,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6073, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6234, PETRI_PLACES=363, PETRI_TRANSITIONS=385} [2024-06-28 01:31:53,146 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-28 01:31:53,146 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 385 transitions, 6234 flow [2024-06-28 01:31:53,146 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 01:31:53,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:53,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:53,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:31:53,146 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:53,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 144680863, now seen corresponding path program 13 times [2024-06-28 01:31:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:53,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499509730] [2024-06-28 01:31:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:53,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499509730] [2024-06-28 01:31:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499509730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:54,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:54,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205615674] [2024-06-28 01:31:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:54,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:54,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:54,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 385 transitions, 6234 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 01:31:54,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:54,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:54,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:54,993 INFO L124 PetriNetUnfolderBase]: 1909/3433 cut-off events. [2024-06-28 01:31:54,994 INFO L125 PetriNetUnfolderBase]: For 107167/107167 co-relation queries the response was YES. [2024-06-28 01:31:55,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24753 conditions, 3433 events. 1909/3433 cut-off events. For 107167/107167 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21689 event pairs, 721 based on Foata normal form. 2/3219 useless extension candidates. Maximal degree in co-relation 24578. Up to 3153 conditions per place. [2024-06-28 01:31:55,040 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 380 selfloop transitions, 17 changer transitions 0/404 dead transitions. [2024-06-28 01:31:55,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 404 transitions, 7142 flow [2024-06-28 01:31:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:31:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:31:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 01:31:55,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-28 01:31:55,042 INFO L175 Difference]: Start difference. First operand has 363 places, 385 transitions, 6234 flow. Second operand 10 states and 138 transitions. [2024-06-28 01:31:55,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 404 transitions, 7142 flow [2024-06-28 01:31:55,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 404 transitions, 6928 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 01:31:55,906 INFO L231 Difference]: Finished difference. Result has 364 places, 386 transitions, 6076 flow [2024-06-28 01:31:55,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6076, PETRI_PLACES=364, PETRI_TRANSITIONS=386} [2024-06-28 01:31:55,907 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 324 predicate places. [2024-06-28 01:31:55,907 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 386 transitions, 6076 flow [2024-06-28 01:31:55,907 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 01:31:55,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:55,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:55,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:31:55,907 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:55,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:55,908 INFO L85 PathProgramCache]: Analyzing trace with hash -385316291, now seen corresponding path program 5 times [2024-06-28 01:31:55,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:55,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890878892] [2024-06-28 01:31:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:55,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:56,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:56,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890878892] [2024-06-28 01:31:56,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890878892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:56,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:56,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:56,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926595972] [2024-06-28 01:31:56,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:56,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:57,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:57,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:57,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:57,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:57,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 386 transitions, 6076 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 01:31:57,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:57,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:57,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:31:58,087 INFO L124 PetriNetUnfolderBase]: 1925/3462 cut-off events. [2024-06-28 01:31:58,087 INFO L125 PetriNetUnfolderBase]: For 111456/111456 co-relation queries the response was YES. [2024-06-28 01:31:58,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24779 conditions, 3462 events. 1925/3462 cut-off events. For 111456/111456 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21921 event pairs, 714 based on Foata normal form. 2/3253 useless extension candidates. Maximal degree in co-relation 24602. Up to 3120 conditions per place. [2024-06-28 01:31:58,127 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 384 selfloop transitions, 24 changer transitions 0/415 dead transitions. [2024-06-28 01:31:58,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 415 transitions, 7460 flow [2024-06-28 01:31:58,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:31:58,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:31:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 157 transitions. [2024-06-28 01:31:58,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-28 01:31:58,129 INFO L175 Difference]: Start difference. First operand has 364 places, 386 transitions, 6076 flow. Second operand 11 states and 157 transitions. [2024-06-28 01:31:58,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 415 transitions, 7460 flow [2024-06-28 01:31:58,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 415 transitions, 7418 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:31:58,855 INFO L231 Difference]: Finished difference. Result has 367 places, 390 transitions, 6351 flow [2024-06-28 01:31:58,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6034, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6351, PETRI_PLACES=367, PETRI_TRANSITIONS=390} [2024-06-28 01:31:58,856 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 327 predicate places. [2024-06-28 01:31:58,856 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 390 transitions, 6351 flow [2024-06-28 01:31:58,857 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 01:31:58,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:31:58,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:31:58,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:31:58,857 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:31:58,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:31:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1761449379, now seen corresponding path program 6 times [2024-06-28 01:31:58,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:31:58,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474791092] [2024-06-28 01:31:58,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:31:58,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:31:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:31:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:31:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:31:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474791092] [2024-06-28 01:31:59,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474791092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:31:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:31:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:31:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591954501] [2024-06-28 01:31:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:31:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:31:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:31:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:31:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:31:59,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:31:59,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 390 transitions, 6351 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 01:31:59,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:31:59,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:31:59,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:00,684 INFO L124 PetriNetUnfolderBase]: 1941/3491 cut-off events. [2024-06-28 01:32:00,685 INFO L125 PetriNetUnfolderBase]: For 118460/118460 co-relation queries the response was YES. [2024-06-28 01:32:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25249 conditions, 3491 events. 1941/3491 cut-off events. For 118460/118460 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22145 event pairs, 728 based on Foata normal form. 2/3276 useless extension candidates. Maximal degree in co-relation 25071. Up to 3209 conditions per place. [2024-06-28 01:32:00,731 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 387 selfloop transitions, 17 changer transitions 0/411 dead transitions. [2024-06-28 01:32:00,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 411 transitions, 7401 flow [2024-06-28 01:32:00,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:32:00,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:32:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-28 01:32:00,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-28 01:32:00,732 INFO L175 Difference]: Start difference. First operand has 367 places, 390 transitions, 6351 flow. Second operand 10 states and 139 transitions. [2024-06-28 01:32:00,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 411 transitions, 7401 flow [2024-06-28 01:32:01,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 411 transitions, 7206 flow, removed 85 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:01,597 INFO L231 Difference]: Finished difference. Result has 370 places, 392 transitions, 6333 flow [2024-06-28 01:32:01,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6178, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6333, PETRI_PLACES=370, PETRI_TRANSITIONS=392} [2024-06-28 01:32:01,598 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 330 predicate places. [2024-06-28 01:32:01,598 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 392 transitions, 6333 flow [2024-06-28 01:32:01,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:32:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:01,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:32:01,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:32:01,598 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:01,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash -385672481, now seen corresponding path program 7 times [2024-06-28 01:32:01,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:01,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428907434] [2024-06-28 01:32:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:01,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428907434] [2024-06-28 01:32:02,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428907434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:02,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:02,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:32:02,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722302435] [2024-06-28 01:32:02,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:02,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:32:02,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:32:02,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:32:02,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:02,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 392 transitions, 6333 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 01:32:02,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:02,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:02,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:03,532 INFO L124 PetriNetUnfolderBase]: 1938/3486 cut-off events. [2024-06-28 01:32:03,533 INFO L125 PetriNetUnfolderBase]: For 106107/106107 co-relation queries the response was YES. [2024-06-28 01:32:03,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24661 conditions, 3486 events. 1938/3486 cut-off events. For 106107/106107 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 22118 event pairs, 727 based on Foata normal form. 2/3272 useless extension candidates. Maximal degree in co-relation 24481. Up to 3176 conditions per place. [2024-06-28 01:32:03,576 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 381 selfloop transitions, 21 changer transitions 0/409 dead transitions. [2024-06-28 01:32:03,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 409 transitions, 7233 flow [2024-06-28 01:32:03,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:32:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:32:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-28 01:32:03,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2024-06-28 01:32:03,578 INFO L175 Difference]: Start difference. First operand has 370 places, 392 transitions, 6333 flow. Second operand 9 states and 129 transitions. [2024-06-28 01:32:03,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 409 transitions, 7233 flow [2024-06-28 01:32:04,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 409 transitions, 6996 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:04,590 INFO L231 Difference]: Finished difference. Result has 371 places, 392 transitions, 6146 flow [2024-06-28 01:32:04,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6146, PETRI_PLACES=371, PETRI_TRANSITIONS=392} [2024-06-28 01:32:04,591 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 331 predicate places. [2024-06-28 01:32:04,591 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 392 transitions, 6146 flow [2024-06-28 01:32:04,591 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 01:32:04,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:04,592 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 01:32:04,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:32:04,592 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:04,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:04,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1015566713, now seen corresponding path program 1 times [2024-06-28 01:32:04,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:04,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959662761] [2024-06-28 01:32:04,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:04,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:05,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:05,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959662761] [2024-06-28 01:32:05,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959662761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:05,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:05,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945608357] [2024-06-28 01:32:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:05,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:05,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:05,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:05,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 392 transitions, 6146 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 01:32:05,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:05,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:05,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:06,545 INFO L124 PetriNetUnfolderBase]: 1957/3514 cut-off events. [2024-06-28 01:32:06,545 INFO L125 PetriNetUnfolderBase]: For 105759/105759 co-relation queries the response was YES. [2024-06-28 01:32:06,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24656 conditions, 3514 events. 1957/3514 cut-off events. For 105759/105759 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22268 event pairs, 387 based on Foata normal form. 2/3299 useless extension candidates. Maximal degree in co-relation 24475. Up to 2934 conditions per place. [2024-06-28 01:32:06,594 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 364 selfloop transitions, 61 changer transitions 0/432 dead transitions. [2024-06-28 01:32:06,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 432 transitions, 7308 flow [2024-06-28 01:32:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:06,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:32:06,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 01:32:06,595 INFO L175 Difference]: Start difference. First operand has 371 places, 392 transitions, 6146 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:32:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 432 transitions, 7308 flow [2024-06-28 01:32:07,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 432 transitions, 7259 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:32:07,692 INFO L231 Difference]: Finished difference. Result has 374 places, 394 transitions, 6358 flow [2024-06-28 01:32:07,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6097, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6358, PETRI_PLACES=374, PETRI_TRANSITIONS=394} [2024-06-28 01:32:07,692 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 334 predicate places. [2024-06-28 01:32:07,692 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 394 transitions, 6358 flow [2024-06-28 01:32:07,693 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 01:32:07,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:07,693 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 01:32:07,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:32:07,694 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:07,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1304346563, now seen corresponding path program 2 times [2024-06-28 01:32:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:07,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548759104] [2024-06-28 01:32:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:07,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:08,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548759104] [2024-06-28 01:32:08,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548759104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:08,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:08,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665850097] [2024-06-28 01:32:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:08,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:08,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:08,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 394 transitions, 6358 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 01:32:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:08,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:09,596 INFO L124 PetriNetUnfolderBase]: 1990/3571 cut-off events. [2024-06-28 01:32:09,597 INFO L125 PetriNetUnfolderBase]: For 113583/113583 co-relation queries the response was YES. [2024-06-28 01:32:09,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25657 conditions, 3571 events. 1990/3571 cut-off events. For 113583/113583 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 22753 event pairs, 538 based on Foata normal form. 2/3356 useless extension candidates. Maximal degree in co-relation 25475. Up to 3030 conditions per place. [2024-06-28 01:32:09,646 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 369 selfloop transitions, 59 changer transitions 0/435 dead transitions. [2024-06-28 01:32:09,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 435 transitions, 7658 flow [2024-06-28 01:32:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:09,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:32:09,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 01:32:09,647 INFO L175 Difference]: Start difference. First operand has 374 places, 394 transitions, 6358 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:32:09,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 435 transitions, 7658 flow [2024-06-28 01:32:10,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 435 transitions, 7289 flow, removed 124 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:10,484 INFO L231 Difference]: Finished difference. Result has 376 places, 398 transitions, 6392 flow [2024-06-28 01:32:10,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6117, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6392, PETRI_PLACES=376, PETRI_TRANSITIONS=398} [2024-06-28 01:32:10,484 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 336 predicate places. [2024-06-28 01:32:10,484 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 398 transitions, 6392 flow [2024-06-28 01:32:10,485 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 01:32:10,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:10,485 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 01:32:10,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:32:10,485 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:10,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1407125513, now seen corresponding path program 3 times [2024-06-28 01:32:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:10,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274609659] [2024-06-28 01:32:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:10,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:11,366 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 01:32:11,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:11,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274609659] [2024-06-28 01:32:11,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274609659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:11,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:11,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:11,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79691549] [2024-06-28 01:32:11,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:11,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:11,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:11,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:11,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:11,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:11,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 398 transitions, 6392 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 01:32:11,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:11,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:11,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:12,472 INFO L124 PetriNetUnfolderBase]: 2010/3611 cut-off events. [2024-06-28 01:32:12,473 INFO L125 PetriNetUnfolderBase]: For 115661/115661 co-relation queries the response was YES. [2024-06-28 01:32:12,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25676 conditions, 3611 events. 2010/3611 cut-off events. For 115661/115661 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 23064 event pairs, 574 based on Foata normal form. 2/3395 useless extension candidates. Maximal degree in co-relation 25493. Up to 3136 conditions per place. [2024-06-28 01:32:12,519 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 369 selfloop transitions, 59 changer transitions 0/435 dead transitions. [2024-06-28 01:32:12,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 435 transitions, 7558 flow [2024-06-28 01:32:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:12,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:32:12,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:32:12,526 INFO L175 Difference]: Start difference. First operand has 376 places, 398 transitions, 6392 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:32:12,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 435 transitions, 7558 flow [2024-06-28 01:32:13,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 435 transitions, 7323 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:13,394 INFO L231 Difference]: Finished difference. Result has 378 places, 400 transitions, 6421 flow [2024-06-28 01:32:13,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6157, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6421, PETRI_PLACES=378, PETRI_TRANSITIONS=400} [2024-06-28 01:32:13,395 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 338 predicate places. [2024-06-28 01:32:13,395 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 400 transitions, 6421 flow [2024-06-28 01:32:13,395 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 01:32:13,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:13,395 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 01:32:13,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:32:13,396 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:13,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:13,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1419787463, now seen corresponding path program 4 times [2024-06-28 01:32:13,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:13,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563585156] [2024-06-28 01:32:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:13,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:14,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:14,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563585156] [2024-06-28 01:32:14,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563585156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:14,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:14,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:14,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442513404] [2024-06-28 01:32:14,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:14,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:14,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 400 transitions, 6421 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 01:32:14,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:14,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:14,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:15,335 INFO L124 PetriNetUnfolderBase]: 2026/3641 cut-off events. [2024-06-28 01:32:15,335 INFO L125 PetriNetUnfolderBase]: For 118808/118808 co-relation queries the response was YES. [2024-06-28 01:32:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25816 conditions, 3641 events. 2026/3641 cut-off events. For 118808/118808 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 23283 event pairs, 617 based on Foata normal form. 2/3429 useless extension candidates. Maximal degree in co-relation 25632. Up to 3245 conditions per place. [2024-06-28 01:32:15,382 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 356 selfloop transitions, 67 changer transitions 0/430 dead transitions. [2024-06-28 01:32:15,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 430 transitions, 7551 flow [2024-06-28 01:32:15,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:15,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:15,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:32:15,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 01:32:15,384 INFO L175 Difference]: Start difference. First operand has 378 places, 400 transitions, 6421 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:32:15,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 430 transitions, 7551 flow [2024-06-28 01:32:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 430 transitions, 7305 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:16,410 INFO L231 Difference]: Finished difference. Result has 380 places, 402 transitions, 6461 flow [2024-06-28 01:32:16,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6175, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6461, PETRI_PLACES=380, PETRI_TRANSITIONS=402} [2024-06-28 01:32:16,411 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 340 predicate places. [2024-06-28 01:32:16,411 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 402 transitions, 6461 flow [2024-06-28 01:32:16,411 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 01:32:16,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:16,411 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 01:32:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:32:16,411 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:16,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1420235010, now seen corresponding path program 1 times [2024-06-28 01:32:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821083776] [2024-06-28 01:32:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:17,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:17,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:17,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821083776] [2024-06-28 01:32:17,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821083776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:17,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:17,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:17,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080426987] [2024-06-28 01:32:17,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:17,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:17,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:17,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:17,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:17,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 402 transitions, 6461 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 01:32:17,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:17,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:17,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:18,703 INFO L124 PetriNetUnfolderBase]: 2033/3649 cut-off events. [2024-06-28 01:32:18,703 INFO L125 PetriNetUnfolderBase]: For 113029/113029 co-relation queries the response was YES. [2024-06-28 01:32:18,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25685 conditions, 3649 events. 2033/3649 cut-off events. For 113029/113029 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 23274 event pairs, 615 based on Foata normal form. 1/3429 useless extension candidates. Maximal degree in co-relation 25500. Up to 3259 conditions per place. [2024-06-28 01:32:18,740 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 352 selfloop transitions, 71 changer transitions 0/430 dead transitions. [2024-06-28 01:32:18,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 430 transitions, 7511 flow [2024-06-28 01:32:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:18,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:32:18,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4065656565656566 [2024-06-28 01:32:18,741 INFO L175 Difference]: Start difference. First operand has 380 places, 402 transitions, 6461 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:32:18,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 430 transitions, 7511 flow [2024-06-28 01:32:19,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 430 transitions, 7247 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:19,561 INFO L231 Difference]: Finished difference. Result has 382 places, 404 transitions, 6427 flow [2024-06-28 01:32:19,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6197, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6427, PETRI_PLACES=382, PETRI_TRANSITIONS=404} [2024-06-28 01:32:19,562 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 342 predicate places. [2024-06-28 01:32:19,562 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 404 transitions, 6427 flow [2024-06-28 01:32:19,562 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 01:32:19,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:19,562 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 01:32:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:32:19,562 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:19,563 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:19,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1420041353, now seen corresponding path program 5 times [2024-06-28 01:32:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188368061] [2024-06-28 01:32:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:20,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188368061] [2024-06-28 01:32:20,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188368061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:20,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:20,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:20,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999458473] [2024-06-28 01:32:20,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:20,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:20,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:20,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:20,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 404 transitions, 6427 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 01:32:20,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:20,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:20,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:21,580 INFO L124 PetriNetUnfolderBase]: 2049/3678 cut-off events. [2024-06-28 01:32:21,580 INFO L125 PetriNetUnfolderBase]: For 118899/118899 co-relation queries the response was YES. [2024-06-28 01:32:21,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25852 conditions, 3678 events. 2049/3678 cut-off events. For 118899/118899 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 23569 event pairs, 610 based on Foata normal form. 2/3465 useless extension candidates. Maximal degree in co-relation 25666. Up to 3215 conditions per place. [2024-06-28 01:32:21,631 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 360 selfloop transitions, 69 changer transitions 0/436 dead transitions. [2024-06-28 01:32:21,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 436 transitions, 7585 flow [2024-06-28 01:32:21,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:21,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:32:21,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 01:32:21,632 INFO L175 Difference]: Start difference. First operand has 382 places, 404 transitions, 6427 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:32:21,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 436 transitions, 7585 flow [2024-06-28 01:32:22,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 436 transitions, 7413 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:22,632 INFO L231 Difference]: Finished difference. Result has 384 places, 406 transitions, 6547 flow [2024-06-28 01:32:22,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6255, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6547, PETRI_PLACES=384, PETRI_TRANSITIONS=406} [2024-06-28 01:32:22,632 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 344 predicate places. [2024-06-28 01:32:22,633 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 406 transitions, 6547 flow [2024-06-28 01:32:22,633 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 01:32:22,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:22,633 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 01:32:22,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:32:22,633 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:22,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -873786701, now seen corresponding path program 1 times [2024-06-28 01:32:22,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:22,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795847458] [2024-06-28 01:32:22,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:22,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:23,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795847458] [2024-06-28 01:32:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795847458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:23,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:23,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:23,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142706752] [2024-06-28 01:32:23,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:23,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:23,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:23,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:23,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 406 transitions, 6547 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 01:32:23,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:23,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:23,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:24,471 INFO L124 PetriNetUnfolderBase]: 2133/3832 cut-off events. [2024-06-28 01:32:24,471 INFO L125 PetriNetUnfolderBase]: For 168000/168000 co-relation queries the response was YES. [2024-06-28 01:32:24,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27145 conditions, 3832 events. 2133/3832 cut-off events. For 168000/168000 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 24808 event pairs, 611 based on Foata normal form. 10/3621 useless extension candidates. Maximal degree in co-relation 26958. Up to 3301 conditions per place. [2024-06-28 01:32:24,520 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 376 selfloop transitions, 61 changer transitions 0/444 dead transitions. [2024-06-28 01:32:24,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 444 transitions, 7759 flow [2024-06-28 01:32:24,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:24,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-28 01:32:24,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41435185185185186 [2024-06-28 01:32:24,521 INFO L175 Difference]: Start difference. First operand has 384 places, 406 transitions, 6547 flow. Second operand 12 states and 179 transitions. [2024-06-28 01:32:24,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 444 transitions, 7759 flow [2024-06-28 01:32:25,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 444 transitions, 7481 flow, removed 70 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:25,438 INFO L231 Difference]: Finished difference. Result has 387 places, 408 transitions, 6517 flow [2024-06-28 01:32:25,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6517, PETRI_PLACES=387, PETRI_TRANSITIONS=408} [2024-06-28 01:32:25,439 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 347 predicate places. [2024-06-28 01:32:25,439 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 408 transitions, 6517 flow [2024-06-28 01:32:25,439 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 01:32:25,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:25,439 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 01:32:25,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:32:25,439 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:25,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 191500445, now seen corresponding path program 6 times [2024-06-28 01:32:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:25,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651666220] [2024-06-28 01:32:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:26,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:26,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651666220] [2024-06-28 01:32:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651666220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:26,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:26,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143802503] [2024-06-28 01:32:26,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:26,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:26,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:26,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:26,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:26,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 408 transitions, 6517 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 01:32:26,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:26,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:26,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:27,514 INFO L124 PetriNetUnfolderBase]: 2180/3917 cut-off events. [2024-06-28 01:32:27,515 INFO L125 PetriNetUnfolderBase]: For 139833/139833 co-relation queries the response was YES. [2024-06-28 01:32:27,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27533 conditions, 3917 events. 2180/3917 cut-off events. For 139833/139833 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 25543 event pairs, 572 based on Foata normal form. 2/3694 useless extension candidates. Maximal degree in co-relation 27345. Up to 3361 conditions per place. [2024-06-28 01:32:27,560 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 383 selfloop transitions, 59 changer transitions 0/449 dead transitions. [2024-06-28 01:32:27,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 449 transitions, 7739 flow [2024-06-28 01:32:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:27,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:27,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:32:27,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 01:32:27,561 INFO L175 Difference]: Start difference. First operand has 387 places, 408 transitions, 6517 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:32:27,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 449 transitions, 7739 flow [2024-06-28 01:32:28,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 449 transitions, 7555 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-28 01:32:28,496 INFO L231 Difference]: Finished difference. Result has 388 places, 414 transitions, 6648 flow [2024-06-28 01:32:28,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6333, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6648, PETRI_PLACES=388, PETRI_TRANSITIONS=414} [2024-06-28 01:32:28,497 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 348 predicate places. [2024-06-28 01:32:28,497 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 414 transitions, 6648 flow [2024-06-28 01:32:28,497 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 01:32:28,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:28,498 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 01:32:28,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:32:28,498 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:28,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:28,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1082841361, now seen corresponding path program 7 times [2024-06-28 01:32:28,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:28,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990479673] [2024-06-28 01:32:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:28,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:28,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:29,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:29,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:29,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990479673] [2024-06-28 01:32:29,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990479673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:29,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:29,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:29,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721004705] [2024-06-28 01:32:29,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:29,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:29,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:29,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:29,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:29,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 414 transitions, 6648 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 01:32:29,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:29,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:29,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:30,575 INFO L124 PetriNetUnfolderBase]: 2214/3979 cut-off events. [2024-06-28 01:32:30,575 INFO L125 PetriNetUnfolderBase]: For 138095/138095 co-relation queries the response was YES. [2024-06-28 01:32:30,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28024 conditions, 3979 events. 2214/3979 cut-off events. For 138095/138095 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 26029 event pairs, 641 based on Foata normal form. 2/3758 useless extension candidates. Maximal degree in co-relation 27835. Up to 3493 conditions per place. [2024-06-28 01:32:30,632 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 385 selfloop transitions, 59 changer transitions 0/451 dead transitions. [2024-06-28 01:32:30,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 451 transitions, 7860 flow [2024-06-28 01:32:30,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-28 01:32:30,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-28 01:32:30,633 INFO L175 Difference]: Start difference. First operand has 388 places, 414 transitions, 6648 flow. Second operand 11 states and 171 transitions. [2024-06-28 01:32:30,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 451 transitions, 7860 flow [2024-06-28 01:32:31,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 451 transitions, 7613 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:31,752 INFO L231 Difference]: Finished difference. Result has 390 places, 418 transitions, 6697 flow [2024-06-28 01:32:31,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6401, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6697, PETRI_PLACES=390, PETRI_TRANSITIONS=418} [2024-06-28 01:32:31,753 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 350 predicate places. [2024-06-28 01:32:31,753 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 418 transitions, 6697 flow [2024-06-28 01:32:31,753 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 01:32:31,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:31,753 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 01:32:31,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:32:31,753 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:31,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1082697211, now seen corresponding path program 8 times [2024-06-28 01:32:31,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:31,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33757809] [2024-06-28 01:32:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:31,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:32,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:32,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33757809] [2024-06-28 01:32:32,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33757809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:32,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:32,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:32,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251883485] [2024-06-28 01:32:32,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:32,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:32,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:32,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:32,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:32,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 418 transitions, 6697 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 01:32:32,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:32,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:32,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:33,873 INFO L124 PetriNetUnfolderBase]: 2279/4098 cut-off events. [2024-06-28 01:32:33,873 INFO L125 PetriNetUnfolderBase]: For 155424/155424 co-relation queries the response was YES. [2024-06-28 01:32:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29086 conditions, 4098 events. 2279/4098 cut-off events. For 155424/155424 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27025 event pairs, 686 based on Foata normal form. 2/3876 useless extension candidates. Maximal degree in co-relation 28896. Up to 3606 conditions per place. [2024-06-28 01:32:33,929 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 377 selfloop transitions, 72 changer transitions 0/456 dead transitions. [2024-06-28 01:32:33,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 456 transitions, 8271 flow [2024-06-28 01:32:33,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:32:33,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 01:32:33,930 INFO L175 Difference]: Start difference. First operand has 390 places, 418 transitions, 6697 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:32:33,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 456 transitions, 8271 flow [2024-06-28 01:32:35,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 456 transitions, 8013 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:35,024 INFO L231 Difference]: Finished difference. Result has 393 places, 427 transitions, 6962 flow [2024-06-28 01:32:35,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6962, PETRI_PLACES=393, PETRI_TRANSITIONS=427} [2024-06-28 01:32:35,025 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 353 predicate places. [2024-06-28 01:32:35,025 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 427 transitions, 6962 flow [2024-06-28 01:32:35,025 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 01:32:35,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:35,025 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 01:32:35,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:32:35,025 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:35,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -446224560, now seen corresponding path program 2 times [2024-06-28 01:32:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:35,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115592070] [2024-06-28 01:32:35,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:36,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:36,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:36,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115592070] [2024-06-28 01:32:36,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115592070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:36,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:36,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722830594] [2024-06-28 01:32:36,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:36,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:36,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:36,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 427 transitions, 6962 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 01:32:36,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:36,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:36,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:37,315 INFO L124 PetriNetUnfolderBase]: 2280/4099 cut-off events. [2024-06-28 01:32:37,315 INFO L125 PetriNetUnfolderBase]: For 143415/143415 co-relation queries the response was YES. [2024-06-28 01:32:37,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28792 conditions, 4099 events. 2280/4099 cut-off events. For 143415/143415 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 27027 event pairs, 704 based on Foata normal form. 1/3869 useless extension candidates. Maximal degree in co-relation 28600. Up to 3706 conditions per place. [2024-06-28 01:32:37,371 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 375 selfloop transitions, 71 changer transitions 0/453 dead transitions. [2024-06-28 01:32:37,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 453 transitions, 8010 flow [2024-06-28 01:32:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:37,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:37,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-28 01:32:37,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-28 01:32:37,372 INFO L175 Difference]: Start difference. First operand has 393 places, 427 transitions, 6962 flow. Second operand 11 states and 162 transitions. [2024-06-28 01:32:37,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 453 transitions, 8010 flow [2024-06-28 01:32:38,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 453 transitions, 7748 flow, removed 90 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:38,502 INFO L231 Difference]: Finished difference. Result has 397 places, 429 transitions, 6896 flow [2024-06-28 01:32:38,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6896, PETRI_PLACES=397, PETRI_TRANSITIONS=429} [2024-06-28 01:32:38,503 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 357 predicate places. [2024-06-28 01:32:38,503 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 429 transitions, 6896 flow [2024-06-28 01:32:38,503 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 01:32:38,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:38,503 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 01:32:38,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:32:38,503 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:38,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:38,504 INFO L85 PathProgramCache]: Analyzing trace with hash -446224777, now seen corresponding path program 9 times [2024-06-28 01:32:38,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:38,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753631185] [2024-06-28 01:32:38,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:38,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:39,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:39,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:39,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753631185] [2024-06-28 01:32:39,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753631185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:39,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:39,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59207278] [2024-06-28 01:32:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:39,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:39,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:39,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:39,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 429 transitions, 6896 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 01:32:39,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:39,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:39,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:40,819 INFO L124 PetriNetUnfolderBase]: 2277/4094 cut-off events. [2024-06-28 01:32:40,820 INFO L125 PetriNetUnfolderBase]: For 132865/132865 co-relation queries the response was YES. [2024-06-28 01:32:40,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28294 conditions, 4094 events. 2277/4094 cut-off events. For 132865/132865 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 26994 event pairs, 703 based on Foata normal form. 2/3868 useless extension candidates. Maximal degree in co-relation 28100. Up to 3681 conditions per place. [2024-06-28 01:32:40,871 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 380 selfloop transitions, 68 changer transitions 0/455 dead transitions. [2024-06-28 01:32:40,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 455 transitions, 7924 flow [2024-06-28 01:32:40,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:32:40,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 01:32:40,873 INFO L175 Difference]: Start difference. First operand has 397 places, 429 transitions, 6896 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:32:40,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 455 transitions, 7924 flow [2024-06-28 01:32:42,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 455 transitions, 7626 flow, removed 78 selfloop flow, removed 10 redundant places. [2024-06-28 01:32:42,026 INFO L231 Difference]: Finished difference. Result has 398 places, 429 transitions, 6745 flow [2024-06-28 01:32:42,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6745, PETRI_PLACES=398, PETRI_TRANSITIONS=429} [2024-06-28 01:32:42,028 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 358 predicate places. [2024-06-28 01:32:42,028 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 429 transitions, 6745 flow [2024-06-28 01:32:42,029 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 01:32:42,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:42,029 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 01:32:42,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:32:42,031 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:42,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:42,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1638032235, now seen corresponding path program 2 times [2024-06-28 01:32:42,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:42,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020266287] [2024-06-28 01:32:42,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:42,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:42,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:42,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:42,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020266287] [2024-06-28 01:32:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020266287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:42,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:42,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829963207] [2024-06-28 01:32:42,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:42,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:43,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:43,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 429 transitions, 6745 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 01:32:43,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:43,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:43,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:44,281 INFO L124 PetriNetUnfolderBase]: 2403/4340 cut-off events. [2024-06-28 01:32:44,281 INFO L125 PetriNetUnfolderBase]: For 186262/186262 co-relation queries the response was YES. [2024-06-28 01:32:44,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29929 conditions, 4340 events. 2403/4340 cut-off events. For 186262/186262 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 29134 event pairs, 755 based on Foata normal form. 10/4120 useless extension candidates. Maximal degree in co-relation 29735. Up to 3729 conditions per place. [2024-06-28 01:32:44,330 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 397 selfloop transitions, 60 changer transitions 0/464 dead transitions. [2024-06-28 01:32:44,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 464 transitions, 8033 flow [2024-06-28 01:32:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:44,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-28 01:32:44,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-28 01:32:44,332 INFO L175 Difference]: Start difference. First operand has 398 places, 429 transitions, 6745 flow. Second operand 11 states and 168 transitions. [2024-06-28 01:32:44,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 464 transitions, 8033 flow [2024-06-28 01:32:45,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 464 transitions, 7867 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:45,438 INFO L231 Difference]: Finished difference. Result has 400 places, 434 transitions, 6907 flow [2024-06-28 01:32:45,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6907, PETRI_PLACES=400, PETRI_TRANSITIONS=434} [2024-06-28 01:32:45,439 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 360 predicate places. [2024-06-28 01:32:45,439 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 434 transitions, 6907 flow [2024-06-28 01:32:45,439 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 01:32:45,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:45,439 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 01:32:45,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:32:45,440 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:45,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1842199339, now seen corresponding path program 10 times [2024-06-28 01:32:45,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:45,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562058072] [2024-06-28 01:32:45,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:45,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:46,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:46,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562058072] [2024-06-28 01:32:46,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562058072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:46,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:46,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991829013] [2024-06-28 01:32:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:46,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:46,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 434 transitions, 6907 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 01:32:46,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:46,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:46,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:47,519 INFO L124 PetriNetUnfolderBase]: 2419/4371 cut-off events. [2024-06-28 01:32:47,519 INFO L125 PetriNetUnfolderBase]: For 152071/152071 co-relation queries the response was YES. [2024-06-28 01:32:47,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30278 conditions, 4371 events. 2419/4371 cut-off events. For 152071/152071 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 29499 event pairs, 888 based on Foata normal form. 2/4135 useless extension candidates. Maximal degree in co-relation 30083. Up to 3998 conditions per place. [2024-06-28 01:32:47,579 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 420 selfloop transitions, 36 changer transitions 0/463 dead transitions. [2024-06-28 01:32:47,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 463 transitions, 8120 flow [2024-06-28 01:32:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:47,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-28 01:32:47,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116161616161616 [2024-06-28 01:32:47,581 INFO L175 Difference]: Start difference. First operand has 400 places, 434 transitions, 6907 flow. Second operand 11 states and 163 transitions. [2024-06-28 01:32:47,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 463 transitions, 8120 flow [2024-06-28 01:32:48,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 463 transitions, 7972 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:32:48,833 INFO L231 Difference]: Finished difference. Result has 404 places, 436 transitions, 6998 flow [2024-06-28 01:32:48,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6998, PETRI_PLACES=404, PETRI_TRANSITIONS=436} [2024-06-28 01:32:48,833 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 364 predicate places. [2024-06-28 01:32:48,833 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 436 transitions, 6998 flow [2024-06-28 01:32:48,834 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 01:32:48,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:48,834 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 01:32:48,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:32:48,834 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:48,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:48,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1841989593, now seen corresponding path program 3 times [2024-06-28 01:32:48,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:48,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742596020] [2024-06-28 01:32:48,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:48,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:49,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:49,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742596020] [2024-06-28 01:32:49,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742596020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:49,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:49,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:49,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447603605] [2024-06-28 01:32:49,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:49,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:49,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:49,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:49,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 436 transitions, 6998 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 01:32:49,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:49,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:49,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:50,880 INFO L124 PetriNetUnfolderBase]: 2487/4503 cut-off events. [2024-06-28 01:32:50,881 INFO L125 PetriNetUnfolderBase]: For 195775/195775 co-relation queries the response was YES. [2024-06-28 01:32:50,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31191 conditions, 4503 events. 2487/4503 cut-off events. For 195775/195775 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 30641 event pairs, 908 based on Foata normal form. 10/4274 useless extension candidates. Maximal degree in co-relation 30995. Up to 3984 conditions per place. [2024-06-28 01:32:50,942 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 428 selfloop transitions, 36 changer transitions 0/471 dead transitions. [2024-06-28 01:32:50,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 471 transitions, 8259 flow [2024-06-28 01:32:50,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 01:32:50,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:32:50,944 INFO L175 Difference]: Start difference. First operand has 404 places, 436 transitions, 6998 flow. Second operand 12 states and 180 transitions. [2024-06-28 01:32:50,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 471 transitions, 8259 flow [2024-06-28 01:32:52,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 471 transitions, 7995 flow, removed 77 selfloop flow, removed 11 redundant places. [2024-06-28 01:32:52,097 INFO L231 Difference]: Finished difference. Result has 405 places, 437 transitions, 6929 flow [2024-06-28 01:32:52,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6734, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6929, PETRI_PLACES=405, PETRI_TRANSITIONS=437} [2024-06-28 01:32:52,098 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 365 predicate places. [2024-06-28 01:32:52,098 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 437 transitions, 6929 flow [2024-06-28 01:32:52,098 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 01:32:52,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:52,098 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 01:32:52,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:32:52,098 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:52,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1425445639, now seen corresponding path program 11 times [2024-06-28 01:32:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:52,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271193897] [2024-06-28 01:32:52,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:52,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:52,953 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 01:32:52,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:52,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271193897] [2024-06-28 01:32:52,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271193897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:52,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:52,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:52,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898937987] [2024-06-28 01:32:52,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:52,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:52,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:52,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:52,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:53,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:53,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 437 transitions, 6929 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 01:32:53,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:53,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:53,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:54,270 INFO L124 PetriNetUnfolderBase]: 2571/4661 cut-off events. [2024-06-28 01:32:54,270 INFO L125 PetriNetUnfolderBase]: For 226573/226573 co-relation queries the response was YES. [2024-06-28 01:32:54,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32539 conditions, 4661 events. 2571/4661 cut-off events. For 226573/226573 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32085 event pairs, 950 based on Foata normal form. 12/4431 useless extension candidates. Maximal degree in co-relation 32342. Up to 4152 conditions per place. [2024-06-28 01:32:54,334 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 428 selfloop transitions, 35 changer transitions 0/470 dead transitions. [2024-06-28 01:32:54,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 470 transitions, 8220 flow [2024-06-28 01:32:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:32:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:32:54,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:32:54,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 01:32:54,335 INFO L175 Difference]: Start difference. First operand has 405 places, 437 transitions, 6929 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:32:54,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 470 transitions, 8220 flow [2024-06-28 01:32:55,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 470 transitions, 8071 flow, removed 41 selfloop flow, removed 10 redundant places. [2024-06-28 01:32:55,597 INFO L231 Difference]: Finished difference. Result has 406 places, 439 transitions, 7025 flow [2024-06-28 01:32:55,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7025, PETRI_PLACES=406, PETRI_TRANSITIONS=439} [2024-06-28 01:32:55,597 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 366 predicate places. [2024-06-28 01:32:55,597 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 439 transitions, 7025 flow [2024-06-28 01:32:55,597 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 01:32:55,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:55,598 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 01:32:55,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:32:55,598 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:55,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:55,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1425453575, now seen corresponding path program 4 times [2024-06-28 01:32:55,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:55,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261409709] [2024-06-28 01:32:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:55,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:55,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:56,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:56,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261409709] [2024-06-28 01:32:56,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261409709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:56,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:56,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:56,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246351818] [2024-06-28 01:32:56,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:56,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:56,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:56,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:56,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:56,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:56,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 439 transitions, 7025 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 01:32:56,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:56,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:56,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:32:57,624 INFO L124 PetriNetUnfolderBase]: 2639/4793 cut-off events. [2024-06-28 01:32:57,624 INFO L125 PetriNetUnfolderBase]: For 225696/225696 co-relation queries the response was YES. [2024-06-28 01:32:57,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33473 conditions, 4793 events. 2639/4793 cut-off events. For 225696/225696 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 33279 event pairs, 970 based on Foata normal form. 10/4560 useless extension candidates. Maximal degree in co-relation 33275. Up to 4138 conditions per place. [2024-06-28 01:32:57,690 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 432 selfloop transitions, 35 changer transitions 0/474 dead transitions. [2024-06-28 01:32:57,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 474 transitions, 8296 flow [2024-06-28 01:32:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:32:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:32:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-28 01:32:57,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41435185185185186 [2024-06-28 01:32:57,692 INFO L175 Difference]: Start difference. First operand has 406 places, 439 transitions, 7025 flow. Second operand 12 states and 179 transitions. [2024-06-28 01:32:57,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 474 transitions, 8296 flow [2024-06-28 01:32:58,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 474 transitions, 8105 flow, removed 63 selfloop flow, removed 9 redundant places. [2024-06-28 01:32:58,957 INFO L231 Difference]: Finished difference. Result has 409 places, 440 transitions, 7033 flow [2024-06-28 01:32:58,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6834, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7033, PETRI_PLACES=409, PETRI_TRANSITIONS=440} [2024-06-28 01:32:58,958 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 369 predicate places. [2024-06-28 01:32:58,958 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 440 transitions, 7033 flow [2024-06-28 01:32:58,958 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 01:32:58,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:32:58,958 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 01:32:58,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:32:58,959 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:32:58,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:32:58,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1616999313, now seen corresponding path program 12 times [2024-06-28 01:32:58,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:32:58,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234590444] [2024-06-28 01:32:58,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:32:58,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:32:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:32:59,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:32:59,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:32:59,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234590444] [2024-06-28 01:32:59,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234590444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:32:59,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:32:59,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:32:59,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891833873] [2024-06-28 01:32:59,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:32:59,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:32:59,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:32:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:32:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:32:59,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:32:59,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 440 transitions, 7033 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 01:32:59,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:32:59,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:32:59,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:01,394 INFO L124 PetriNetUnfolderBase]: 2655/4817 cut-off events. [2024-06-28 01:33:01,394 INFO L125 PetriNetUnfolderBase]: For 175938/175938 co-relation queries the response was YES. [2024-06-28 01:33:01,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33257 conditions, 4817 events. 2655/4817 cut-off events. For 175938/175938 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 33491 event pairs, 840 based on Foata normal form. 2/4572 useless extension candidates. Maximal degree in co-relation 33058. Up to 4173 conditions per place. [2024-06-28 01:33:01,450 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 369 selfloop transitions, 94 changer transitions 0/470 dead transitions. [2024-06-28 01:33:01,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 470 transitions, 8278 flow [2024-06-28 01:33:01,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:01,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:33:01,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:33:01,452 INFO L175 Difference]: Start difference. First operand has 409 places, 440 transitions, 7033 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:33:01,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 470 transitions, 8278 flow [2024-06-28 01:33:02,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 470 transitions, 8129 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:02,632 INFO L231 Difference]: Finished difference. Result has 410 places, 442 transitions, 7251 flow [2024-06-28 01:33:02,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6884, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7251, PETRI_PLACES=410, PETRI_TRANSITIONS=442} [2024-06-28 01:33:02,633 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 370 predicate places. [2024-06-28 01:33:02,633 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 442 transitions, 7251 flow [2024-06-28 01:33:02,633 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 01:33:02,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:02,633 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 01:33:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:33:02,633 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:02,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1823929459, now seen corresponding path program 5 times [2024-06-28 01:33:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760909707] [2024-06-28 01:33:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:03,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:03,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:03,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760909707] [2024-06-28 01:33:03,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760909707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:03,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:03,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:33:03,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437799176] [2024-06-28 01:33:03,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:03,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:33:03,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:33:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:33:03,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:03,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 442 transitions, 7251 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 01:33:03,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:03,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:03,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:04,643 INFO L124 PetriNetUnfolderBase]: 2707/4922 cut-off events. [2024-06-28 01:33:04,643 INFO L125 PetriNetUnfolderBase]: For 208914/208914 co-relation queries the response was YES. [2024-06-28 01:33:04,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34109 conditions, 4922 events. 2707/4922 cut-off events. For 208914/208914 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 34420 event pairs, 972 based on Foata normal form. 8/4692 useless extension candidates. Maximal degree in co-relation 33909. Up to 3984 conditions per place. [2024-06-28 01:33:04,706 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 435 selfloop transitions, 37 changer transitions 0/479 dead transitions. [2024-06-28 01:33:04,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 479 transitions, 8574 flow [2024-06-28 01:33:04,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:33:04,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:33:04,708 INFO L175 Difference]: Start difference. First operand has 410 places, 442 transitions, 7251 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:33:04,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 479 transitions, 8574 flow [2024-06-28 01:33:06,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 479 transitions, 8223 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:06,161 INFO L231 Difference]: Finished difference. Result has 412 places, 443 transitions, 7102 flow [2024-06-28 01:33:06,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6900, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7102, PETRI_PLACES=412, PETRI_TRANSITIONS=443} [2024-06-28 01:33:06,162 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 372 predicate places. [2024-06-28 01:33:06,162 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 443 transitions, 7102 flow [2024-06-28 01:33:06,162 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 01:33:06,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:06,162 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 01:33:06,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:33:06,162 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:06,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:06,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1418088409, now seen corresponding path program 13 times [2024-06-28 01:33:06,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:06,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585938846] [2024-06-28 01:33:06,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:06,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:07,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585938846] [2024-06-28 01:33:07,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585938846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:07,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:07,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:07,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018295557] [2024-06-28 01:33:07,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:07,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:07,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:07,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:07,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:07,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 443 transitions, 7102 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 01:33:07,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:07,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:07,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:08,561 INFO L124 PetriNetUnfolderBase]: 2723/4948 cut-off events. [2024-06-28 01:33:08,562 INFO L125 PetriNetUnfolderBase]: For 182846/182846 co-relation queries the response was YES. [2024-06-28 01:33:08,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34073 conditions, 4948 events. 2723/4948 cut-off events. For 182846/182846 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 34655 event pairs, 1028 based on Foata normal form. 2/4706 useless extension candidates. Maximal degree in co-relation 33872. Up to 4374 conditions per place. [2024-06-28 01:33:08,627 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 430 selfloop transitions, 41 changer transitions 0/478 dead transitions. [2024-06-28 01:33:08,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 478 transitions, 8433 flow [2024-06-28 01:33:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:08,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-28 01:33:08,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-28 01:33:08,628 INFO L175 Difference]: Start difference. First operand has 412 places, 443 transitions, 7102 flow. Second operand 11 states and 170 transitions. [2024-06-28 01:33:08,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 478 transitions, 8433 flow [2024-06-28 01:33:09,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 478 transitions, 8263 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:10,003 INFO L231 Difference]: Finished difference. Result has 414 places, 445 transitions, 7199 flow [2024-06-28 01:33:10,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6932, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7199, PETRI_PLACES=414, PETRI_TRANSITIONS=445} [2024-06-28 01:33:10,004 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 374 predicate places. [2024-06-28 01:33:10,004 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 445 transitions, 7199 flow [2024-06-28 01:33:10,004 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 01:33:10,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:10,005 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 01:33:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:33:10,005 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:10,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1616993733, now seen corresponding path program 14 times [2024-06-28 01:33:10,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:10,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333842845] [2024-06-28 01:33:10,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:10,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:10,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:10,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333842845] [2024-06-28 01:33:10,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333842845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:10,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:10,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:10,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596636065] [2024-06-28 01:33:10,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:10,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:10,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:10,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:10,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:10,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 445 transitions, 7199 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 01:33:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:12,416 INFO L124 PetriNetUnfolderBase]: 2820/5128 cut-off events. [2024-06-28 01:33:12,416 INFO L125 PetriNetUnfolderBase]: For 252256/252256 co-relation queries the response was YES. [2024-06-28 01:33:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36699 conditions, 5128 events. 2820/5128 cut-off events. For 252256/252256 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 36293 event pairs, 917 based on Foata normal form. 2/4883 useless extension candidates. Maximal degree in co-relation 36497. Up to 4283 conditions per place. [2024-06-28 01:33:12,490 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 379 selfloop transitions, 97 changer transitions 0/483 dead transitions. [2024-06-28 01:33:12,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 483 transitions, 8884 flow [2024-06-28 01:33:12,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:12,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:33:12,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:33:12,492 INFO L175 Difference]: Start difference. First operand has 414 places, 445 transitions, 7199 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:33:12,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 483 transitions, 8884 flow [2024-06-28 01:33:14,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 483 transitions, 8633 flow, removed 86 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:14,339 INFO L231 Difference]: Finished difference. Result has 416 places, 448 transitions, 7457 flow [2024-06-28 01:33:14,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6948, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7457, PETRI_PLACES=416, PETRI_TRANSITIONS=448} [2024-06-28 01:33:14,339 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 376 predicate places. [2024-06-28 01:33:14,339 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 448 transitions, 7457 flow [2024-06-28 01:33:14,340 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 01:33:14,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:14,340 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 01:33:14,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:33:14,340 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:14,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:14,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1218642469, now seen corresponding path program 15 times [2024-06-28 01:33:14,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:14,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504707025] [2024-06-28 01:33:14,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:14,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:15,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:15,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504707025] [2024-06-28 01:33:15,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504707025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:15,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:15,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146663472] [2024-06-28 01:33:15,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:15,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:15,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:15,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:15,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:15,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:15,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 448 transitions, 7457 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 01:33:15,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:15,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:15,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:16,732 INFO L124 PetriNetUnfolderBase]: 2860/5244 cut-off events. [2024-06-28 01:33:16,732 INFO L125 PetriNetUnfolderBase]: For 262067/262067 co-relation queries the response was YES. [2024-06-28 01:33:16,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37519 conditions, 5244 events. 2860/5244 cut-off events. For 262067/262067 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 37361 event pairs, 939 based on Foata normal form. 2/4989 useless extension candidates. Maximal degree in co-relation 37316. Up to 4210 conditions per place. [2024-06-28 01:33:16,802 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 383 selfloop transitions, 100 changer transitions 0/490 dead transitions. [2024-06-28 01:33:16,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 490 transitions, 8900 flow [2024-06-28 01:33:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:16,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:33:16,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-28 01:33:16,803 INFO L175 Difference]: Start difference. First operand has 416 places, 448 transitions, 7457 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:33:16,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 490 transitions, 8900 flow [2024-06-28 01:33:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 490 transitions, 8598 flow, removed 94 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:18,684 INFO L231 Difference]: Finished difference. Result has 421 places, 451 transitions, 7604 flow [2024-06-28 01:33:18,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7604, PETRI_PLACES=421, PETRI_TRANSITIONS=451} [2024-06-28 01:33:18,685 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 381 predicate places. [2024-06-28 01:33:18,685 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 451 transitions, 7604 flow [2024-06-28 01:33:18,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:33:18,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:18,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:18,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:33:18,686 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:18,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:18,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1224364325, now seen corresponding path program 6 times [2024-06-28 01:33:18,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:18,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641626235] [2024-06-28 01:33:18,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:18,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:19,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641626235] [2024-06-28 01:33:19,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641626235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:19,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:19,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:19,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861666323] [2024-06-28 01:33:19,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:19,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:19,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:19,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:19,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:19,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:19,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 451 transitions, 7604 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 01:33:19,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:19,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:19,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:21,131 INFO L124 PetriNetUnfolderBase]: 2847/5221 cut-off events. [2024-06-28 01:33:21,131 INFO L125 PetriNetUnfolderBase]: For 244949/244949 co-relation queries the response was YES. [2024-06-28 01:33:21,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36299 conditions, 5221 events. 2847/5221 cut-off events. For 244949/244949 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 37088 event pairs, 977 based on Foata normal form. 10/4970 useless extension candidates. Maximal degree in co-relation 36094. Up to 4636 conditions per place. [2024-06-28 01:33:21,206 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 412 selfloop transitions, 66 changer transitions 0/485 dead transitions. [2024-06-28 01:33:21,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 485 transitions, 8780 flow [2024-06-28 01:33:21,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:33:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:33:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 01:33:21,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:33:21,207 INFO L175 Difference]: Start difference. First operand has 421 places, 451 transitions, 7604 flow. Second operand 12 states and 180 transitions. [2024-06-28 01:33:21,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 485 transitions, 8780 flow [2024-06-28 01:33:22,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 485 transitions, 8351 flow, removed 153 selfloop flow, removed 7 redundant places. [2024-06-28 01:33:22,829 INFO L231 Difference]: Finished difference. Result has 426 places, 451 transitions, 7312 flow [2024-06-28 01:33:22,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7175, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7312, PETRI_PLACES=426, PETRI_TRANSITIONS=451} [2024-06-28 01:33:22,829 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 386 predicate places. [2024-06-28 01:33:22,829 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 451 transitions, 7312 flow [2024-06-28 01:33:22,829 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 01:33:22,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:22,830 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 01:33:22,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:33:22,830 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:22,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:22,830 INFO L85 PathProgramCache]: Analyzing trace with hash 448430131, now seen corresponding path program 16 times [2024-06-28 01:33:22,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:22,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286860839] [2024-06-28 01:33:22,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:22,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286860839] [2024-06-28 01:33:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286860839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:23,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745848457] [2024-06-28 01:33:23,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:23,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:23,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 451 transitions, 7312 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 01:33:23,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:23,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:23,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:25,056 INFO L124 PetriNetUnfolderBase]: 2867/5259 cut-off events. [2024-06-28 01:33:25,056 INFO L125 PetriNetUnfolderBase]: For 186850/186850 co-relation queries the response was YES. [2024-06-28 01:33:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36037 conditions, 5259 events. 2867/5259 cut-off events. For 186850/186850 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 37444 event pairs, 850 based on Foata normal form. 2/5000 useless extension candidates. Maximal degree in co-relation 35830. Up to 4231 conditions per place. [2024-06-28 01:33:25,128 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 393 selfloop transitions, 87 changer transitions 0/487 dead transitions. [2024-06-28 01:33:25,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 487 transitions, 8630 flow [2024-06-28 01:33:25,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:25,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:33:25,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:33:25,130 INFO L175 Difference]: Start difference. First operand has 426 places, 451 transitions, 7312 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:33:25,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 487 transitions, 8630 flow [2024-06-28 01:33:26,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 487 transitions, 8425 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 01:33:26,619 INFO L231 Difference]: Finished difference. Result has 424 places, 453 transitions, 7496 flow [2024-06-28 01:33:26,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7107, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7496, PETRI_PLACES=424, PETRI_TRANSITIONS=453} [2024-06-28 01:33:26,619 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 384 predicate places. [2024-06-28 01:33:26,619 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 453 transitions, 7496 flow [2024-06-28 01:33:26,620 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 01:33:26,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:26,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:33:26,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:33:26,620 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:26,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:26,620 INFO L85 PathProgramCache]: Analyzing trace with hash 507416311, now seen corresponding path program 17 times [2024-06-28 01:33:26,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:26,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45088176] [2024-06-28 01:33:26,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:26,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:26,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:27,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:27,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45088176] [2024-06-28 01:33:27,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45088176] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:27,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:27,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:27,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054454323] [2024-06-28 01:33:27,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:27,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:27,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:27,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:27,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:27,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:27,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 453 transitions, 7496 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 01:33:27,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:27,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:27,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:29,030 INFO L124 PetriNetUnfolderBase]: 2887/5299 cut-off events. [2024-06-28 01:33:29,030 INFO L125 PetriNetUnfolderBase]: For 200268/200268 co-relation queries the response was YES. [2024-06-28 01:33:29,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37091 conditions, 5299 events. 2887/5299 cut-off events. For 200268/200268 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 37944 event pairs, 971 based on Foata normal form. 2/5037 useless extension candidates. Maximal degree in co-relation 36883. Up to 4517 conditions per place. [2024-06-28 01:33:29,107 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 402 selfloop transitions, 79 changer transitions 0/488 dead transitions. [2024-06-28 01:33:29,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 488 transitions, 8818 flow [2024-06-28 01:33:29,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:29,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:33:29,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:33:29,109 INFO L175 Difference]: Start difference. First operand has 424 places, 453 transitions, 7496 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:33:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 488 transitions, 8818 flow [2024-06-28 01:33:30,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 488 transitions, 8459 flow, removed 101 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:30,850 INFO L231 Difference]: Finished difference. Result has 425 places, 455 transitions, 7505 flow [2024-06-28 01:33:30,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7149, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7505, PETRI_PLACES=425, PETRI_TRANSITIONS=455} [2024-06-28 01:33:30,851 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 385 predicate places. [2024-06-28 01:33:30,851 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 455 transitions, 7505 flow [2024-06-28 01:33:30,851 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 01:33:30,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:30,851 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 01:33:30,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:33:30,851 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:30,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1184075382, now seen corresponding path program 3 times [2024-06-28 01:33:30,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:30,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798116194] [2024-06-28 01:33:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:30,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:31,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:31,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798116194] [2024-06-28 01:33:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798116194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625306569] [2024-06-28 01:33:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:31,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:31,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:31,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:31,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:32,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:32,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 455 transitions, 7505 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 01:33:32,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:32,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:32,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:33,468 INFO L124 PetriNetUnfolderBase]: 2885/5298 cut-off events. [2024-06-28 01:33:33,468 INFO L125 PetriNetUnfolderBase]: For 171998/171998 co-relation queries the response was YES. [2024-06-28 01:33:33,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36319 conditions, 5298 events. 2885/5298 cut-off events. For 171998/171998 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37881 event pairs, 1064 based on Foata normal form. 1/5036 useless extension candidates. Maximal degree in co-relation 36110. Up to 4696 conditions per place. [2024-06-28 01:33:33,535 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 369 selfloop transitions, 103 changer transitions 0/479 dead transitions. [2024-06-28 01:33:33,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 479 transitions, 8575 flow [2024-06-28 01:33:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-28 01:33:33,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-28 01:33:33,536 INFO L175 Difference]: Start difference. First operand has 425 places, 455 transitions, 7505 flow. Second operand 10 states and 147 transitions. [2024-06-28 01:33:33,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 479 transitions, 8575 flow [2024-06-28 01:33:35,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 479 transitions, 8239 flow, removed 95 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:35,118 INFO L231 Difference]: Finished difference. Result has 427 places, 455 transitions, 7401 flow [2024-06-28 01:33:35,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7401, PETRI_PLACES=427, PETRI_TRANSITIONS=455} [2024-06-28 01:33:35,119 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 387 predicate places. [2024-06-28 01:33:35,119 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 455 transitions, 7401 flow [2024-06-28 01:33:35,119 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 01:33:35,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:35,119 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 01:33:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:33:35,120 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:35,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 507566041, now seen corresponding path program 18 times [2024-06-28 01:33:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:35,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143043375] [2024-06-28 01:33:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:35,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:35,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:35,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143043375] [2024-06-28 01:33:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143043375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299933120] [2024-06-28 01:33:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:35,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:35,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 455 transitions, 7401 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 01:33:35,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:35,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:35,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:37,527 INFO L124 PetriNetUnfolderBase]: 2901/5326 cut-off events. [2024-06-28 01:33:37,527 INFO L125 PetriNetUnfolderBase]: For 170723/170723 co-relation queries the response was YES. [2024-06-28 01:33:37,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36322 conditions, 5326 events. 2901/5326 cut-off events. For 170723/170723 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 38148 event pairs, 1075 based on Foata normal form. 2/5074 useless extension candidates. Maximal degree in co-relation 36112. Up to 4668 conditions per place. [2024-06-28 01:33:37,589 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 376 selfloop transitions, 100 changer transitions 0/483 dead transitions. [2024-06-28 01:33:37,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 483 transitions, 8667 flow [2024-06-28 01:33:37,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:37,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:33:37,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:33:37,591 INFO L175 Difference]: Start difference. First operand has 427 places, 455 transitions, 7401 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:33:37,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 483 transitions, 8667 flow [2024-06-28 01:33:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 483 transitions, 8357 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 01:33:39,029 INFO L231 Difference]: Finished difference. Result has 428 places, 457 transitions, 7494 flow [2024-06-28 01:33:39,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7091, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7494, PETRI_PLACES=428, PETRI_TRANSITIONS=457} [2024-06-28 01:33:39,029 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 388 predicate places. [2024-06-28 01:33:39,030 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 457 transitions, 7494 flow [2024-06-28 01:33:39,030 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 01:33:39,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:39,030 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 01:33:39,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:33:39,030 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:39,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:39,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1392542411, now seen corresponding path program 19 times [2024-06-28 01:33:39,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:39,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250930423] [2024-06-28 01:33:39,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:39,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250930423] [2024-06-28 01:33:39,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250930423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:39,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:39,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:39,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869467704] [2024-06-28 01:33:39,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:39,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:39,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:39,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:39,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:40,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:40,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 457 transitions, 7494 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 01:33:40,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:40,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:40,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:41,619 INFO L124 PetriNetUnfolderBase]: 3017/5530 cut-off events. [2024-06-28 01:33:41,619 INFO L125 PetriNetUnfolderBase]: For 176803/176803 co-relation queries the response was YES. [2024-06-28 01:33:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38129 conditions, 5530 events. 3017/5530 cut-off events. For 176803/176803 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 39921 event pairs, 1081 based on Foata normal form. 2/5260 useless extension candidates. Maximal degree in co-relation 37918. Up to 4923 conditions per place. [2024-06-28 01:33:41,695 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 424 selfloop transitions, 83 changer transitions 0/514 dead transitions. [2024-06-28 01:33:41,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 514 transitions, 9404 flow [2024-06-28 01:33:41,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:41,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-28 01:33:41,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-28 01:33:41,697 INFO L175 Difference]: Start difference. First operand has 428 places, 457 transitions, 7494 flow. Second operand 11 states and 164 transitions. [2024-06-28 01:33:41,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 514 transitions, 9404 flow [2024-06-28 01:33:43,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 514 transitions, 8957 flow, removed 93 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:43,292 INFO L231 Difference]: Finished difference. Result has 431 places, 486 transitions, 8009 flow [2024-06-28 01:33:43,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7090, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8009, PETRI_PLACES=431, PETRI_TRANSITIONS=486} [2024-06-28 01:33:43,292 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 391 predicate places. [2024-06-28 01:33:43,293 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 486 transitions, 8009 flow [2024-06-28 01:33:43,293 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 01:33:43,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:43,293 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 01:33:43,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:33:43,293 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:43,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:43,294 INFO L85 PathProgramCache]: Analyzing trace with hash 695327835, now seen corresponding path program 7 times [2024-06-28 01:33:43,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:43,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908626709] [2024-06-28 01:33:43,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:44,148 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 01:33:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:44,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908626709] [2024-06-28 01:33:44,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908626709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:44,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:44,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377183916] [2024-06-28 01:33:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:44,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:44,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 486 transitions, 8009 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 01:33:44,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:44,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:44,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:45,918 INFO L124 PetriNetUnfolderBase]: 3121/5734 cut-off events. [2024-06-28 01:33:45,918 INFO L125 PetriNetUnfolderBase]: For 228845/228845 co-relation queries the response was YES. [2024-06-28 01:33:45,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39110 conditions, 5734 events. 3121/5734 cut-off events. For 228845/228845 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 41784 event pairs, 1118 based on Foata normal form. 10/5474 useless extension candidates. Maximal degree in co-relation 38898. Up to 4716 conditions per place. [2024-06-28 01:33:45,999 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 430 selfloop transitions, 84 changer transitions 0/521 dead transitions. [2024-06-28 01:33:45,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 521 transitions, 9407 flow [2024-06-28 01:33:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:46,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:33:46,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:33:46,000 INFO L175 Difference]: Start difference. First operand has 431 places, 486 transitions, 8009 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:33:46,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 521 transitions, 9407 flow [2024-06-28 01:33:47,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 521 transitions, 9146 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-06-28 01:33:47,786 INFO L231 Difference]: Finished difference. Result has 436 places, 488 transitions, 8094 flow [2024-06-28 01:33:47,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7748, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8094, PETRI_PLACES=436, PETRI_TRANSITIONS=488} [2024-06-28 01:33:47,787 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 396 predicate places. [2024-06-28 01:33:47,787 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 488 transitions, 8094 flow [2024-06-28 01:33:47,787 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 01:33:47,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:47,787 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 01:33:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:33:47,787 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:47,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1714917135, now seen corresponding path program 20 times [2024-06-28 01:33:47,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:47,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163848374] [2024-06-28 01:33:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163848374] [2024-06-28 01:33:48,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163848374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:48,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:48,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:48,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260830475] [2024-06-28 01:33:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:48,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:48,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:48,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 488 transitions, 8094 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 01:33:48,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:48,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:48,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:50,295 INFO L124 PetriNetUnfolderBase]: 3137/5762 cut-off events. [2024-06-28 01:33:50,296 INFO L125 PetriNetUnfolderBase]: For 194422/194422 co-relation queries the response was YES. [2024-06-28 01:33:50,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39414 conditions, 5762 events. 3137/5762 cut-off events. For 194422/194422 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 42173 event pairs, 1275 based on Foata normal form. 2/5482 useless extension candidates. Maximal degree in co-relation 39201. Up to 5224 conditions per place. [2024-06-28 01:33:50,377 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 453 selfloop transitions, 54 changer transitions 0/514 dead transitions. [2024-06-28 01:33:50,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 514 transitions, 9424 flow [2024-06-28 01:33:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-28 01:33:50,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:33:50,378 INFO L175 Difference]: Start difference. First operand has 436 places, 488 transitions, 8094 flow. Second operand 10 states and 150 transitions. [2024-06-28 01:33:50,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 514 transitions, 9424 flow [2024-06-28 01:33:52,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 514 transitions, 9151 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-28 01:33:52,012 INFO L231 Difference]: Finished difference. Result has 436 places, 490 transitions, 8125 flow [2024-06-28 01:33:52,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7821, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8125, PETRI_PLACES=436, PETRI_TRANSITIONS=490} [2024-06-28 01:33:52,012 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 396 predicate places. [2024-06-28 01:33:52,012 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 490 transitions, 8125 flow [2024-06-28 01:33:52,012 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 01:33:52,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:52,013 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 01:33:52,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:33:52,013 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:52,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:52,013 INFO L85 PathProgramCache]: Analyzing trace with hash -888414101, now seen corresponding path program 21 times [2024-06-28 01:33:52,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:52,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297933215] [2024-06-28 01:33:52,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:52,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:52,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297933215] [2024-06-28 01:33:52,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297933215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:52,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:52,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897451017] [2024-06-28 01:33:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:52,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:52,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:52,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:53,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:53,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 490 transitions, 8125 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 01:33:53,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:53,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:53,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:54,663 INFO L124 PetriNetUnfolderBase]: 3253/5980 cut-off events. [2024-06-28 01:33:54,664 INFO L125 PetriNetUnfolderBase]: For 279707/279707 co-relation queries the response was YES. [2024-06-28 01:33:54,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42708 conditions, 5980 events. 3253/5980 cut-off events. For 279707/279707 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 44199 event pairs, 1284 based on Foata normal form. 2/5705 useless extension candidates. Maximal degree in co-relation 42494. Up to 5026 conditions per place. [2024-06-28 01:33:54,746 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 454 selfloop transitions, 64 changer transitions 0/525 dead transitions. [2024-06-28 01:33:54,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 525 transitions, 9943 flow [2024-06-28 01:33:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:33:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:33:54,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:33:54,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:33:54,748 INFO L175 Difference]: Start difference. First operand has 436 places, 490 transitions, 8125 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:33:54,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 525 transitions, 9943 flow [2024-06-28 01:33:56,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 525 transitions, 9669 flow, removed 86 selfloop flow, removed 8 redundant places. [2024-06-28 01:33:56,817 INFO L231 Difference]: Finished difference. Result has 438 places, 494 transitions, 8367 flow [2024-06-28 01:33:56,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7851, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8367, PETRI_PLACES=438, PETRI_TRANSITIONS=494} [2024-06-28 01:33:56,817 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 398 predicate places. [2024-06-28 01:33:56,818 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 494 transitions, 8367 flow [2024-06-28 01:33:56,818 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 01:33:56,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:33:56,818 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 01:33:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:33:56,818 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:33:56,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:33:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash -888198775, now seen corresponding path program 8 times [2024-06-28 01:33:56,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:33:56,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468356129] [2024-06-28 01:33:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:33:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:33:56,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:33:57,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:33:57,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:33:57,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468356129] [2024-06-28 01:33:57,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468356129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:33:57,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:33:57,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:33:57,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546799890] [2024-06-28 01:33:57,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:33:57,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:33:57,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:33:57,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:33:57,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:33:57,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:33:57,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 494 transitions, 8367 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 01:33:57,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:33:57,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:33:57,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:33:59,432 INFO L124 PetriNetUnfolderBase]: 3321/6109 cut-off events. [2024-06-28 01:33:59,432 INFO L125 PetriNetUnfolderBase]: For 341671/341671 co-relation queries the response was YES. [2024-06-28 01:33:59,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43765 conditions, 6109 events. 3321/6109 cut-off events. For 341671/341671 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 45374 event pairs, 1353 based on Foata normal form. 10/5836 useless extension candidates. Maximal degree in co-relation 43550. Up to 5280 conditions per place. [2024-06-28 01:33:59,518 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 465 selfloop transitions, 54 changer transitions 0/526 dead transitions. [2024-06-28 01:33:59,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 526 transitions, 9741 flow [2024-06-28 01:33:59,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:33:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:33:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-28 01:33:59,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217171717171717 [2024-06-28 01:33:59,520 INFO L175 Difference]: Start difference. First operand has 438 places, 494 transitions, 8367 flow. Second operand 11 states and 167 transitions. [2024-06-28 01:33:59,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 526 transitions, 9741 flow [2024-06-28 01:34:01,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 526 transitions, 9478 flow, removed 98 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:01,845 INFO L231 Difference]: Finished difference. Result has 443 places, 495 transitions, 8358 flow [2024-06-28 01:34:01,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8358, PETRI_PLACES=443, PETRI_TRANSITIONS=495} [2024-06-28 01:34:01,845 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 403 predicate places. [2024-06-28 01:34:01,845 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 495 transitions, 8358 flow [2024-06-28 01:34:01,845 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 01:34:01,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:01,846 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 01:34:01,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:34:01,846 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:01,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:01,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1336700827, now seen corresponding path program 9 times [2024-06-28 01:34:01,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:01,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931128755] [2024-06-28 01:34:01,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:01,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:02,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931128755] [2024-06-28 01:34:02,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931128755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:02,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:02,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:02,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684073210] [2024-06-28 01:34:02,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:02,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:02,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:02,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:02,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:02,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 495 transitions, 8358 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 01:34:02,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:02,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:02,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:04,395 INFO L124 PetriNetUnfolderBase]: 3454/6367 cut-off events. [2024-06-28 01:34:04,395 INFO L125 PetriNetUnfolderBase]: For 417328/417328 co-relation queries the response was YES. [2024-06-28 01:34:04,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46910 conditions, 6367 events. 3454/6367 cut-off events. For 417328/417328 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 47763 event pairs, 1310 based on Foata normal form. 8/6104 useless extension candidates. Maximal degree in co-relation 46693. Up to 4656 conditions per place. [2024-06-28 01:34:04,487 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 468 selfloop transitions, 56 changer transitions 0/531 dead transitions. [2024-06-28 01:34:04,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 531 transitions, 10126 flow [2024-06-28 01:34:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:34:04,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-28 01:34:04,488 INFO L175 Difference]: Start difference. First operand has 443 places, 495 transitions, 8358 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:34:04,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 531 transitions, 10126 flow [2024-06-28 01:34:07,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 531 transitions, 9932 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:07,575 INFO L231 Difference]: Finished difference. Result has 444 places, 497 transitions, 8552 flow [2024-06-28 01:34:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8164, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8552, PETRI_PLACES=444, PETRI_TRANSITIONS=497} [2024-06-28 01:34:07,575 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 404 predicate places. [2024-06-28 01:34:07,576 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 497 transitions, 8552 flow [2024-06-28 01:34:07,576 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 01:34:07,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:07,576 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 01:34:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:34:07,576 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:07,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -376533115, now seen corresponding path program 10 times [2024-06-28 01:34:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101675060] [2024-06-28 01:34:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101675060] [2024-06-28 01:34:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101675060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:34:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476992944] [2024-06-28 01:34:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:08,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:34:08,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:34:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:34:08,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:08,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 497 transitions, 8552 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 01:34:08,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:08,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:08,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:10,055 INFO L124 PetriNetUnfolderBase]: 3438/6335 cut-off events. [2024-06-28 01:34:10,055 INFO L125 PetriNetUnfolderBase]: For 363498/363498 co-relation queries the response was YES. [2024-06-28 01:34:10,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45149 conditions, 6335 events. 3438/6335 cut-off events. For 363498/363498 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 47618 event pairs, 1410 based on Foata normal form. 12/6060 useless extension candidates. Maximal degree in co-relation 44931. Up to 5527 conditions per place. [2024-06-28 01:34:10,145 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 466 selfloop transitions, 52 changer transitions 0/525 dead transitions. [2024-06-28 01:34:10,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 525 transitions, 9774 flow [2024-06-28 01:34:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:10,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:10,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:34:10,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 01:34:10,147 INFO L175 Difference]: Start difference. First operand has 444 places, 497 transitions, 8552 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:34:10,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 525 transitions, 9774 flow [2024-06-28 01:34:12,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 525 transitions, 9487 flow, removed 116 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:12,635 INFO L231 Difference]: Finished difference. Result has 448 places, 497 transitions, 8381 flow [2024-06-28 01:34:12,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8265, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8381, PETRI_PLACES=448, PETRI_TRANSITIONS=497} [2024-06-28 01:34:12,636 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 408 predicate places. [2024-06-28 01:34:12,636 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 497 transitions, 8381 flow [2024-06-28 01:34:12,636 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 01:34:12,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:12,636 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 01:34:12,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:34:12,636 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:12,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash -881048935, now seen corresponding path program 11 times [2024-06-28 01:34:12,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:12,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286404354] [2024-06-28 01:34:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:12,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:13,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286404354] [2024-06-28 01:34:13,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286404354] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:13,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:13,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:13,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072594913] [2024-06-28 01:34:13,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:13,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:13,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:13,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:13,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:13,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:13,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 497 transitions, 8381 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 01:34:13,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:13,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:13,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:15,355 INFO L124 PetriNetUnfolderBase]: 3425/6314 cut-off events. [2024-06-28 01:34:15,355 INFO L125 PetriNetUnfolderBase]: For 257640/257640 co-relation queries the response was YES. [2024-06-28 01:34:15,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43098 conditions, 6314 events. 3425/6314 cut-off events. For 257640/257640 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 47400 event pairs, 1382 based on Foata normal form. 10/6043 useless extension candidates. Maximal degree in co-relation 42878. Up to 5220 conditions per place. [2024-06-28 01:34:15,445 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 469 selfloop transitions, 52 changer transitions 0/528 dead transitions. [2024-06-28 01:34:15,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 528 transitions, 9627 flow [2024-06-28 01:34:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:15,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:34:15,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 01:34:15,446 INFO L175 Difference]: Start difference. First operand has 448 places, 497 transitions, 8381 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:34:15,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 528 transitions, 9627 flow [2024-06-28 01:34:17,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 528 transitions, 9417 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:17,237 INFO L231 Difference]: Finished difference. Result has 450 places, 497 transitions, 8291 flow [2024-06-28 01:34:17,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8171, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8291, PETRI_PLACES=450, PETRI_TRANSITIONS=497} [2024-06-28 01:34:17,238 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 410 predicate places. [2024-06-28 01:34:17,238 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 497 transitions, 8291 flow [2024-06-28 01:34:17,238 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 01:34:17,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:17,238 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 01:34:17,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:34:17,239 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:17,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1543630973, now seen corresponding path program 22 times [2024-06-28 01:34:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660626899] [2024-06-28 01:34:17,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:17,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:17,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:18,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:18,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660626899] [2024-06-28 01:34:18,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660626899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:18,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:18,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:18,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674918792] [2024-06-28 01:34:18,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:18,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:18,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:18,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:18,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:18,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 497 transitions, 8291 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 01:34:18,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:18,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:18,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:19,986 INFO L124 PetriNetUnfolderBase]: 3441/6340 cut-off events. [2024-06-28 01:34:19,987 INFO L125 PetriNetUnfolderBase]: For 206472/206472 co-relation queries the response was YES. [2024-06-28 01:34:20,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43205 conditions, 6340 events. 3441/6340 cut-off events. For 206472/206472 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 47606 event pairs, 1201 based on Foata normal form. 2/6050 useless extension candidates. Maximal degree in co-relation 42984. Up to 5393 conditions per place. [2024-06-28 01:34:20,072 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 387 selfloop transitions, 132 changer transitions 0/526 dead transitions. [2024-06-28 01:34:20,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 526 transitions, 9740 flow [2024-06-28 01:34:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:34:20,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 01:34:20,074 INFO L175 Difference]: Start difference. First operand has 450 places, 497 transitions, 8291 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:34:20,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 526 transitions, 9740 flow [2024-06-28 01:34:21,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 526 transitions, 9592 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 01:34:21,919 INFO L231 Difference]: Finished difference. Result has 449 places, 501 transitions, 8692 flow [2024-06-28 01:34:21,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8145, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8692, PETRI_PLACES=449, PETRI_TRANSITIONS=501} [2024-06-28 01:34:21,920 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 409 predicate places. [2024-06-28 01:34:21,920 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 501 transitions, 8692 flow [2024-06-28 01:34:21,920 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 01:34:21,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:21,920 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 01:34:21,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:34:21,920 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:21,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:21,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1087715891, now seen corresponding path program 23 times [2024-06-28 01:34:21,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:21,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371894468] [2024-06-28 01:34:21,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:21,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:22,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371894468] [2024-06-28 01:34:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371894468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649206148] [2024-06-28 01:34:22,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:22,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:22,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:22,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:22,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 501 transitions, 8692 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 01:34:22,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:22,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:22,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:24,675 INFO L124 PetriNetUnfolderBase]: 3457/6368 cut-off events. [2024-06-28 01:34:24,675 INFO L125 PetriNetUnfolderBase]: For 214188/214188 co-relation queries the response was YES. [2024-06-28 01:34:24,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43944 conditions, 6368 events. 3457/6368 cut-off events. For 214188/214188 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 47887 event pairs, 1245 based on Foata normal form. 2/6080 useless extension candidates. Maximal degree in co-relation 43723. Up to 5724 conditions per place. [2024-06-28 01:34:24,761 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 444 selfloop transitions, 79 changer transitions 0/530 dead transitions. [2024-06-28 01:34:24,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 530 transitions, 10086 flow [2024-06-28 01:34:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:24,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:24,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:34:24,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 01:34:24,763 INFO L175 Difference]: Start difference. First operand has 449 places, 501 transitions, 8692 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:34:24,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 530 transitions, 10086 flow [2024-06-28 01:34:26,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 530 transitions, 9748 flow, removed 124 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:26,747 INFO L231 Difference]: Finished difference. Result has 453 places, 503 transitions, 8722 flow [2024-06-28 01:34:26,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8356, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8722, PETRI_PLACES=453, PETRI_TRANSITIONS=503} [2024-06-28 01:34:26,747 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 413 predicate places. [2024-06-28 01:34:26,747 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 503 transitions, 8722 flow [2024-06-28 01:34:26,747 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 01:34:26,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:26,748 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 01:34:26,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:34:26,748 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:26,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:26,748 INFO L85 PathProgramCache]: Analyzing trace with hash 674145183, now seen corresponding path program 24 times [2024-06-28 01:34:26,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:26,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404027040] [2024-06-28 01:34:26,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:27,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:27,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404027040] [2024-06-28 01:34:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404027040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:27,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271176856] [2024-06-28 01:34:27,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:27,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:27,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:27,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:27,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:27,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 503 transitions, 8722 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 01:34:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:27,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:29,603 INFO L124 PetriNetUnfolderBase]: 3477/6405 cut-off events. [2024-06-28 01:34:29,603 INFO L125 PetriNetUnfolderBase]: For 216565/216565 co-relation queries the response was YES. [2024-06-28 01:34:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44207 conditions, 6405 events. 3477/6405 cut-off events. For 216565/216565 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 48244 event pairs, 1217 based on Foata normal form. 2/6114 useless extension candidates. Maximal degree in co-relation 43985. Up to 5752 conditions per place. [2024-06-28 01:34:29,687 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 457 selfloop transitions, 73 changer transitions 0/537 dead transitions. [2024-06-28 01:34:29,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 537 transitions, 10150 flow [2024-06-28 01:34:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:34:29,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-28 01:34:29,688 INFO L175 Difference]: Start difference. First operand has 453 places, 503 transitions, 8722 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:34:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 537 transitions, 10150 flow [2024-06-28 01:34:31,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 537 transitions, 9798 flow, removed 100 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:31,728 INFO L231 Difference]: Finished difference. Result has 455 places, 505 transitions, 8728 flow [2024-06-28 01:34:31,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8372, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8728, PETRI_PLACES=455, PETRI_TRANSITIONS=505} [2024-06-28 01:34:31,728 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 415 predicate places. [2024-06-28 01:34:31,729 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 505 transitions, 8728 flow [2024-06-28 01:34:31,729 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 01:34:31,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:31,729 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 01:34:31,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:34:31,729 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:31,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:31,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1538058847, now seen corresponding path program 12 times [2024-06-28 01:34:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31354866] [2024-06-28 01:34:31,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:31,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:32,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:32,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31354866] [2024-06-28 01:34:32,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31354866] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:32,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:32,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:32,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306672581] [2024-06-28 01:34:32,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:32,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:32,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:32,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:32,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:32,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:32,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 505 transitions, 8728 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 01:34:32,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:32,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:32,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:34,644 INFO L124 PetriNetUnfolderBase]: 3545/6536 cut-off events. [2024-06-28 01:34:34,644 INFO L125 PetriNetUnfolderBase]: For 278357/278357 co-relation queries the response was YES. [2024-06-28 01:34:34,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45108 conditions, 6536 events. 3545/6536 cut-off events. For 278357/278357 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 49426 event pairs, 1299 based on Foata normal form. 10/6254 useless extension candidates. Maximal degree in co-relation 44885. Up to 5726 conditions per place. [2024-06-28 01:34:34,736 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 456 selfloop transitions, 75 changer transitions 0/538 dead transitions. [2024-06-28 01:34:34,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 538 transitions, 10140 flow [2024-06-28 01:34:34,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:34,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:34:34,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:34:34,737 INFO L175 Difference]: Start difference. First operand has 455 places, 505 transitions, 8728 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:34:34,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 538 transitions, 10140 flow [2024-06-28 01:34:36,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 538 transitions, 9810 flow, removed 98 selfloop flow, removed 7 redundant places. [2024-06-28 01:34:36,895 INFO L231 Difference]: Finished difference. Result has 459 places, 506 transitions, 8698 flow [2024-06-28 01:34:36,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8400, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8698, PETRI_PLACES=459, PETRI_TRANSITIONS=506} [2024-06-28 01:34:36,896 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 419 predicate places. [2024-06-28 01:34:36,896 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 506 transitions, 8698 flow [2024-06-28 01:34:36,896 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 01:34:36,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:36,896 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 01:34:36,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:34:36,896 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:36,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1324287497, now seen corresponding path program 25 times [2024-06-28 01:34:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:36,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090179391] [2024-06-28 01:34:36,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:36,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:37,775 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 01:34:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090179391] [2024-06-28 01:34:37,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090179391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160083251] [2024-06-28 01:34:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:37,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:37,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:37,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 506 transitions, 8698 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 01:34:37,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:37,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:37,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:39,670 INFO L124 PetriNetUnfolderBase]: 3561/6568 cut-off events. [2024-06-28 01:34:39,670 INFO L125 PetriNetUnfolderBase]: For 232700/232700 co-relation queries the response was YES. [2024-06-28 01:34:39,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45139 conditions, 6568 events. 3561/6568 cut-off events. For 232700/232700 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 49789 event pairs, 1533 based on Foata normal form. 2/6271 useless extension candidates. Maximal degree in co-relation 44915. Up to 6105 conditions per place. [2024-06-28 01:34:39,762 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 485 selfloop transitions, 38 changer transitions 0/530 dead transitions. [2024-06-28 01:34:39,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 530 transitions, 10072 flow [2024-06-28 01:34:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:39,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:34:39,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:34:39,781 INFO L175 Difference]: Start difference. First operand has 459 places, 506 transitions, 8698 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:34:39,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 530 transitions, 10072 flow [2024-06-28 01:34:41,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 530 transitions, 9717 flow, removed 55 selfloop flow, removed 11 redundant places. [2024-06-28 01:34:41,964 INFO L231 Difference]: Finished difference. Result has 458 places, 508 transitions, 8630 flow [2024-06-28 01:34:41,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8343, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8630, PETRI_PLACES=458, PETRI_TRANSITIONS=508} [2024-06-28 01:34:41,965 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 418 predicate places. [2024-06-28 01:34:41,965 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 508 transitions, 8630 flow [2024-06-28 01:34:41,965 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 01:34:41,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:41,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:34:41,965 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:41,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash 232310375, now seen corresponding path program 26 times [2024-06-28 01:34:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:41,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515363755] [2024-06-28 01:34:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:42,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:42,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515363755] [2024-06-28 01:34:42,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515363755] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:42,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:42,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:42,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717779247] [2024-06-28 01:34:42,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:42,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:42,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:42,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:42,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:42,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:42,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 508 transitions, 8630 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 01:34:42,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:42,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:42,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:44,872 INFO L124 PetriNetUnfolderBase]: 3677/6785 cut-off events. [2024-06-28 01:34:44,872 INFO L125 PetriNetUnfolderBase]: For 326175/326175 co-relation queries the response was YES. [2024-06-28 01:34:44,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48459 conditions, 6785 events. 3677/6785 cut-off events. For 326175/326175 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 51798 event pairs, 1567 based on Foata normal form. 2/6488 useless extension candidates. Maximal degree in co-relation 48235. Up to 6099 conditions per place. [2024-06-28 01:34:44,968 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 491 selfloop transitions, 43 changer transitions 0/541 dead transitions. [2024-06-28 01:34:44,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 541 transitions, 10520 flow [2024-06-28 01:34:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:34:44,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:34:44,969 INFO L175 Difference]: Start difference. First operand has 458 places, 508 transitions, 8630 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:34:44,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 541 transitions, 10520 flow [2024-06-28 01:34:47,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 541 transitions, 10249 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-28 01:34:47,503 INFO L231 Difference]: Finished difference. Result has 460 places, 512 transitions, 8866 flow [2024-06-28 01:34:47,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8359, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8866, PETRI_PLACES=460, PETRI_TRANSITIONS=512} [2024-06-28 01:34:47,503 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 420 predicate places. [2024-06-28 01:34:47,503 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 512 transitions, 8866 flow [2024-06-28 01:34:47,503 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 01:34:47,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:47,503 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 01:34:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:34:47,504 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:47,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:47,504 INFO L85 PathProgramCache]: Analyzing trace with hash 232525701, now seen corresponding path program 13 times [2024-06-28 01:34:47,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:47,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665028541] [2024-06-28 01:34:47,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:47,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:48,250 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 01:34:48,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:48,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665028541] [2024-06-28 01:34:48,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665028541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:48,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:48,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:48,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035966680] [2024-06-28 01:34:48,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:48,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:48,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:48,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:48,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:48,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 512 transitions, 8866 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 01:34:48,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:48,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:48,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:50,329 INFO L124 PetriNetUnfolderBase]: 3745/6915 cut-off events. [2024-06-28 01:34:50,329 INFO L125 PetriNetUnfolderBase]: For 394355/394355 co-relation queries the response was YES. [2024-06-28 01:34:50,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49432 conditions, 6915 events. 3745/6915 cut-off events. For 394355/394355 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 53000 event pairs, 1611 based on Foata normal form. 10/6621 useless extension candidates. Maximal degree in co-relation 49207. Up to 6303 conditions per place. [2024-06-28 01:34:50,424 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 497 selfloop transitions, 38 changer transitions 0/542 dead transitions. [2024-06-28 01:34:50,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 542 transitions, 10278 flow [2024-06-28 01:34:50,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:34:50,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:34:50,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:34:50,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 01:34:50,425 INFO L175 Difference]: Start difference. First operand has 460 places, 512 transitions, 8866 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:34:50,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 542 transitions, 10278 flow [2024-06-28 01:34:53,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 542 transitions, 10003 flow, removed 114 selfloop flow, removed 6 redundant places. [2024-06-28 01:34:53,291 INFO L231 Difference]: Finished difference. Result has 465 places, 513 transitions, 8820 flow [2024-06-28 01:34:53,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8591, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8820, PETRI_PLACES=465, PETRI_TRANSITIONS=513} [2024-06-28 01:34:53,292 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 425 predicate places. [2024-06-28 01:34:53,292 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 513 transitions, 8820 flow [2024-06-28 01:34:53,292 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 01:34:53,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:53,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:34:53,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:34:53,293 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:53,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:53,293 INFO L85 PathProgramCache]: Analyzing trace with hash -58028819, now seen corresponding path program 27 times [2024-06-28 01:34:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206644598] [2024-06-28 01:34:53,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:53,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:34:54,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:34:54,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:34:54,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206644598] [2024-06-28 01:34:54,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206644598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:34:54,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:34:54,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:34:54,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253403976] [2024-06-28 01:34:54,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:34:54,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:34:54,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:34:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:34:54,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:34:54,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:34:54,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 513 transitions, 8820 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 01:34:54,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:34:54,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:34:54,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:34:56,315 INFO L124 PetriNetUnfolderBase]: 3829/7068 cut-off events. [2024-06-28 01:34:56,315 INFO L125 PetriNetUnfolderBase]: For 434017/434017 co-relation queries the response was YES. [2024-06-28 01:34:56,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50857 conditions, 7068 events. 3829/7068 cut-off events. For 434017/434017 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 54548 event pairs, 1623 based on Foata normal form. 12/6772 useless extension candidates. Maximal degree in co-relation 50630. Up to 6152 conditions per place. [2024-06-28 01:34:56,429 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 459 selfloop transitions, 76 changer transitions 0/542 dead transitions. [2024-06-28 01:34:56,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 542 transitions, 10288 flow [2024-06-28 01:34:56,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:34:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:34:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-28 01:34:56,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-28 01:34:56,431 INFO L175 Difference]: Start difference. First operand has 465 places, 513 transitions, 8820 flow. Second operand 10 states and 159 transitions. [2024-06-28 01:34:56,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 542 transitions, 10288 flow [2024-06-28 01:34:59,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 542 transitions, 10105 flow, removed 56 selfloop flow, removed 9 redundant places. [2024-06-28 01:34:59,351 INFO L231 Difference]: Finished difference. Result has 466 places, 515 transitions, 9011 flow [2024-06-28 01:34:59,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8637, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9011, PETRI_PLACES=466, PETRI_TRANSITIONS=515} [2024-06-28 01:34:59,357 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 426 predicate places. [2024-06-28 01:34:59,357 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 515 transitions, 9011 flow [2024-06-28 01:34:59,357 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 01:34:59,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:34:59,357 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 01:34:59,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:34:59,358 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:34:59,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:34:59,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1523589287, now seen corresponding path program 28 times [2024-06-28 01:34:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:34:59,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016876322] [2024-06-28 01:34:59,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:34:59,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:34:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:00,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:00,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:00,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016876322] [2024-06-28 01:35:00,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016876322] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:00,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:00,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:00,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067329216] [2024-06-28 01:35:00,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:00,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:00,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:00,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:00,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 515 transitions, 9011 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 01:35:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:00,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:00,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:02,376 INFO L124 PetriNetUnfolderBase]: 3845/7100 cut-off events. [2024-06-28 01:35:02,377 INFO L125 PetriNetUnfolderBase]: For 366631/366631 co-relation queries the response was YES. [2024-06-28 01:35:02,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51230 conditions, 7100 events. 3845/7100 cut-off events. For 366631/366631 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 54738 event pairs, 1449 based on Foata normal form. 2/6793 useless extension candidates. Maximal degree in co-relation 51002. Up to 6552 conditions per place. [2024-06-28 01:35:02,486 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 465 selfloop transitions, 68 changer transitions 0/540 dead transitions. [2024-06-28 01:35:02,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 540 transitions, 10425 flow [2024-06-28 01:35:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 01:35:02,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-28 01:35:02,488 INFO L175 Difference]: Start difference. First operand has 466 places, 515 transitions, 9011 flow. Second operand 10 states and 148 transitions. [2024-06-28 01:35:02,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 540 transitions, 10425 flow [2024-06-28 01:35:05,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 540 transitions, 10101 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:05,807 INFO L231 Difference]: Finished difference. Result has 468 places, 517 transitions, 9048 flow [2024-06-28 01:35:05,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8687, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9048, PETRI_PLACES=468, PETRI_TRANSITIONS=517} [2024-06-28 01:35:05,807 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 428 predicate places. [2024-06-28 01:35:05,807 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 517 transitions, 9048 flow [2024-06-28 01:35:05,807 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 01:35:05,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:05,808 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 01:35:05,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:35:05,808 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:05,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:05,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1523594867, now seen corresponding path program 29 times [2024-06-28 01:35:05,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:05,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591423014] [2024-06-28 01:35:05,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:05,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:06,673 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 01:35:06,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:06,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591423014] [2024-06-28 01:35:06,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591423014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:06,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756119452] [2024-06-28 01:35:06,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:06,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 517 transitions, 9048 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 01:35:06,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:06,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:08,905 INFO L124 PetriNetUnfolderBase]: 3861/7128 cut-off events. [2024-06-28 01:35:08,906 INFO L125 PetriNetUnfolderBase]: For 346927/346927 co-relation queries the response was YES. [2024-06-28 01:35:08,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50761 conditions, 7128 events. 3861/7128 cut-off events. For 346927/346927 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 54948 event pairs, 1372 based on Foata normal form. 2/6822 useless extension candidates. Maximal degree in co-relation 50532. Up to 5846 conditions per place. [2024-06-28 01:35:09,021 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 372 selfloop transitions, 166 changer transitions 0/545 dead transitions. [2024-06-28 01:35:09,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 545 transitions, 10494 flow [2024-06-28 01:35:09,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:09,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:09,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:35:09,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-28 01:35:09,023 INFO L175 Difference]: Start difference. First operand has 468 places, 517 transitions, 9048 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:35:09,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 545 transitions, 10494 flow [2024-06-28 01:35:12,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 545 transitions, 10149 flow, removed 106 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:12,009 INFO L231 Difference]: Finished difference. Result has 470 places, 519 transitions, 9264 flow [2024-06-28 01:35:12,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8703, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9264, PETRI_PLACES=470, PETRI_TRANSITIONS=519} [2024-06-28 01:35:12,010 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 430 predicate places. [2024-06-28 01:35:12,010 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 519 transitions, 9264 flow [2024-06-28 01:35:12,010 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 01:35:12,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:12,011 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 01:35:12,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:35:12,011 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:12,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:12,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1942964371, now seen corresponding path program 14 times [2024-06-28 01:35:12,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:12,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803212432] [2024-06-28 01:35:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:12,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:12,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:12,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:12,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803212432] [2024-06-28 01:35:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803212432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:12,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:12,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:12,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645026407] [2024-06-28 01:35:12,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:12,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:12,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:12,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:12,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:13,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:13,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 519 transitions, 9264 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 01:35:13,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:13,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:13,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:15,380 INFO L124 PetriNetUnfolderBase]: 3929/7258 cut-off events. [2024-06-28 01:35:15,380 INFO L125 PetriNetUnfolderBase]: For 420388/420388 co-relation queries the response was YES. [2024-06-28 01:35:15,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52151 conditions, 7258 events. 3929/7258 cut-off events. For 420388/420388 co-relation queries the response was YES. Maximal size of possible extension queue 516. Compared 56198 event pairs, 1416 based on Foata normal form. 10/6960 useless extension candidates. Maximal degree in co-relation 51921. Up to 5888 conditions per place. [2024-06-28 01:35:15,495 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 380 selfloop transitions, 164 changer transitions 0/551 dead transitions. [2024-06-28 01:35:15,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 551 transitions, 10714 flow [2024-06-28 01:35:15,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:15,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:15,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:35:15,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:35:15,497 INFO L175 Difference]: Start difference. First operand has 470 places, 519 transitions, 9264 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:35:15,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 551 transitions, 10714 flow [2024-06-28 01:35:18,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 551 transitions, 10169 flow, removed 108 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:18,477 INFO L231 Difference]: Finished difference. Result has 473 places, 520 transitions, 9209 flow [2024-06-28 01:35:18,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8719, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9209, PETRI_PLACES=473, PETRI_TRANSITIONS=520} [2024-06-28 01:35:18,477 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 433 predicate places. [2024-06-28 01:35:18,477 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 520 transitions, 9209 flow [2024-06-28 01:35:18,477 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 01:35:18,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:18,478 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 01:35:18,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:35:18,478 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:18,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1948686227, now seen corresponding path program 30 times [2024-06-28 01:35:18,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:18,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384480696] [2024-06-28 01:35:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:18,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:19,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:19,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:19,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384480696] [2024-06-28 01:35:19,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384480696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238300757] [2024-06-28 01:35:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:19,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:19,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:19,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:19,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 520 transitions, 9209 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 01:35:19,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:19,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:19,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:22,060 INFO L124 PetriNetUnfolderBase]: 4053/7534 cut-off events. [2024-06-28 01:35:22,060 INFO L125 PetriNetUnfolderBase]: For 481218/481218 co-relation queries the response was YES. [2024-06-28 01:35:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55684 conditions, 7534 events. 4053/7534 cut-off events. For 481218/481218 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 58848 event pairs, 1452 based on Foata normal form. 2/7224 useless extension candidates. Maximal degree in co-relation 55453. Up to 5496 conditions per place. [2024-06-28 01:35:22,154 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 383 selfloop transitions, 170 changer transitions 0/560 dead transitions. [2024-06-28 01:35:22,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 560 transitions, 11219 flow [2024-06-28 01:35:22,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:35:22,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-28 01:35:22,156 INFO L175 Difference]: Start difference. First operand has 473 places, 520 transitions, 9209 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:35:22,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 560 transitions, 11219 flow [2024-06-28 01:35:25,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 560 transitions, 10775 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:25,645 INFO L231 Difference]: Finished difference. Result has 474 places, 523 transitions, 9412 flow [2024-06-28 01:35:25,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8765, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9412, PETRI_PLACES=474, PETRI_TRANSITIONS=523} [2024-06-28 01:35:25,646 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 434 predicate places. [2024-06-28 01:35:25,646 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 523 transitions, 9412 flow [2024-06-28 01:35:25,646 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 01:35:25,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:25,646 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 01:35:25,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:35:25,647 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:25,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:25,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1741883057, now seen corresponding path program 31 times [2024-06-28 01:35:25,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:25,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839715761] [2024-06-28 01:35:25,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:25,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:26,441 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 01:35:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839715761] [2024-06-28 01:35:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839715761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:26,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:26,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051144319] [2024-06-28 01:35:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:26,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:26,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:26,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 523 transitions, 9412 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 01:35:26,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:26,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:26,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:28,759 INFO L124 PetriNetUnfolderBase]: 4037/7509 cut-off events. [2024-06-28 01:35:28,759 INFO L125 PetriNetUnfolderBase]: For 449752/449752 co-relation queries the response was YES. [2024-06-28 01:35:28,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53731 conditions, 7509 events. 4037/7509 cut-off events. For 449752/449752 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 58744 event pairs, 1777 based on Foata normal form. 12/7195 useless extension candidates. Maximal degree in co-relation 53499. Up to 6863 conditions per place. [2024-06-28 01:35:28,863 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 505 selfloop transitions, 37 changer transitions 0/549 dead transitions. [2024-06-28 01:35:28,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 549 transitions, 10676 flow [2024-06-28 01:35:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-28 01:35:28,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-28 01:35:28,864 INFO L175 Difference]: Start difference. First operand has 474 places, 523 transitions, 9412 flow. Second operand 10 states and 152 transitions. [2024-06-28 01:35:28,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 549 transitions, 10676 flow [2024-06-28 01:35:32,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 549 transitions, 10079 flow, removed 184 selfloop flow, removed 7 redundant places. [2024-06-28 01:35:32,188 INFO L231 Difference]: Finished difference. Result has 477 places, 523 transitions, 8896 flow [2024-06-28 01:35:32,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8815, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8896, PETRI_PLACES=477, PETRI_TRANSITIONS=523} [2024-06-28 01:35:32,192 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 437 predicate places. [2024-06-28 01:35:32,192 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 523 transitions, 8896 flow [2024-06-28 01:35:32,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:35:32,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:32,192 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 01:35:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:35:32,193 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:32,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1741606351, now seen corresponding path program 15 times [2024-06-28 01:35:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453274175] [2024-06-28 01:35:32,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:32,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:32,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:32,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453274175] [2024-06-28 01:35:32,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453274175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:32,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:32,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:35:32,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118775049] [2024-06-28 01:35:32,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:32,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:35:32,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:32,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:35:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:35:32,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:32,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 523 transitions, 8896 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 01:35:32,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:32,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:32,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:35,221 INFO L124 PetriNetUnfolderBase]: 4170/7765 cut-off events. [2024-06-28 01:35:35,221 INFO L125 PetriNetUnfolderBase]: For 500797/500797 co-relation queries the response was YES. [2024-06-28 01:35:35,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55866 conditions, 7765 events. 4170/7765 cut-off events. For 500797/500797 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 61180 event pairs, 1807 based on Foata normal form. 8/7451 useless extension candidates. Maximal degree in co-relation 55633. Up to 6667 conditions per place. [2024-06-28 01:35:35,335 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 511 selfloop transitions, 39 changer transitions 0/557 dead transitions. [2024-06-28 01:35:35,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 557 transitions, 10776 flow [2024-06-28 01:35:35,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:35,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-28 01:35:35,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4361111111111111 [2024-06-28 01:35:35,336 INFO L175 Difference]: Start difference. First operand has 477 places, 523 transitions, 8896 flow. Second operand 10 states and 157 transitions. [2024-06-28 01:35:35,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 557 transitions, 10776 flow [2024-06-28 01:35:38,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 557 transitions, 10690 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:35:38,968 INFO L231 Difference]: Finished difference. Result has 478 places, 525 transitions, 9206 flow [2024-06-28 01:35:38,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8810, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=523, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9206, PETRI_PLACES=478, PETRI_TRANSITIONS=525} [2024-06-28 01:35:38,968 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 438 predicate places. [2024-06-28 01:35:38,968 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 525 transitions, 9206 flow [2024-06-28 01:35:38,968 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 01:35:38,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:38,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:35:38,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:35:38,969 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:38,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:38,969 INFO L85 PathProgramCache]: Analyzing trace with hash 359566741, now seen corresponding path program 32 times [2024-06-28 01:35:38,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:38,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849063621] [2024-06-28 01:35:38,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:38,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:39,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:39,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849063621] [2024-06-28 01:35:39,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849063621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:39,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:39,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:39,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067214852] [2024-06-28 01:35:39,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:39,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:39,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:39,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:39,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:39,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:39,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 525 transitions, 9206 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 01:35:39,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:39,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:39,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:42,110 INFO L124 PetriNetUnfolderBase]: 4186/7782 cut-off events. [2024-06-28 01:35:42,111 INFO L125 PetriNetUnfolderBase]: For 483307/483307 co-relation queries the response was YES. [2024-06-28 01:35:42,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56517 conditions, 7782 events. 4186/7782 cut-off events. For 483307/483307 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 61432 event pairs, 1845 based on Foata normal form. 2/7451 useless extension candidates. Maximal degree in co-relation 56283. Up to 6953 conditions per place. [2024-06-28 01:35:42,236 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 462 selfloop transitions, 81 changer transitions 0/550 dead transitions. [2024-06-28 01:35:42,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 550 transitions, 10650 flow [2024-06-28 01:35:42,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:35:42,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:35:42,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-28 01:35:42,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-28 01:35:42,238 INFO L175 Difference]: Start difference. First operand has 478 places, 525 transitions, 9206 flow. Second operand 10 states and 154 transitions. [2024-06-28 01:35:42,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 550 transitions, 10650 flow [2024-06-28 01:35:46,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 550 transitions, 10461 flow, removed 74 selfloop flow, removed 6 redundant places. [2024-06-28 01:35:46,520 INFO L231 Difference]: Finished difference. Result has 482 places, 527 transitions, 9414 flow [2024-06-28 01:35:46,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9017, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9414, PETRI_PLACES=482, PETRI_TRANSITIONS=527} [2024-06-28 01:35:46,521 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 442 predicate places. [2024-06-28 01:35:46,521 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 527 transitions, 9414 flow [2024-06-28 01:35:46,521 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 01:35:46,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:46,521 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 01:35:46,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:35:46,522 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:46,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:46,522 INFO L85 PathProgramCache]: Analyzing trace with hash 366926327, now seen corresponding path program 16 times [2024-06-28 01:35:46,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:46,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655993728] [2024-06-28 01:35:46,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:46,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:47,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:47,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655993728] [2024-06-28 01:35:47,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655993728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:47,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:47,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:47,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280398698] [2024-06-28 01:35:47,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:47,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:47,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:47,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:47,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:47,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:47,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 527 transitions, 9414 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 01:35:47,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:47,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:47,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:49,618 INFO L124 PetriNetUnfolderBase]: 4254/7913 cut-off events. [2024-06-28 01:35:49,618 INFO L125 PetriNetUnfolderBase]: For 548848/548848 co-relation queries the response was YES. [2024-06-28 01:35:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57765 conditions, 7913 events. 4254/7913 cut-off events. For 548848/548848 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 62764 event pairs, 1874 based on Foata normal form. 10/7594 useless extension candidates. Maximal degree in co-relation 57529. Up to 6809 conditions per place. [2024-06-28 01:35:49,745 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 475 selfloop transitions, 76 changer transitions 0/558 dead transitions. [2024-06-28 01:35:49,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 558 transitions, 10880 flow [2024-06-28 01:35:49,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:49,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:35:49,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-28 01:35:49,747 INFO L175 Difference]: Start difference. First operand has 482 places, 527 transitions, 9414 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:35:49,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 558 transitions, 10880 flow [2024-06-28 01:35:53,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 558 transitions, 10501 flow, removed 110 selfloop flow, removed 8 redundant places. [2024-06-28 01:35:53,711 INFO L231 Difference]: Finished difference. Result has 485 places, 528 transitions, 9357 flow [2024-06-28 01:35:53,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9035, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9357, PETRI_PLACES=485, PETRI_TRANSITIONS=528} [2024-06-28 01:35:53,712 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 445 predicate places. [2024-06-28 01:35:53,712 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 528 transitions, 9357 flow [2024-06-28 01:35:53,712 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 01:35:53,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:35:53,712 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 01:35:53,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 01:35:53,712 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:35:53,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:35:53,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1741875121, now seen corresponding path program 17 times [2024-06-28 01:35:53,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:35:53,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981742690] [2024-06-28 01:35:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:35:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:35:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:35:54,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:35:54,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:35:54,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981742690] [2024-06-28 01:35:54,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981742690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:35:54,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:35:54,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:35:54,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524562992] [2024-06-28 01:35:54,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:35:54,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:35:54,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:35:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:35:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:35:54,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:35:54,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 528 transitions, 9357 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 01:35:54,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:35:54,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:35:54,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:35:57,182 INFO L124 PetriNetUnfolderBase]: 4241/7900 cut-off events. [2024-06-28 01:35:57,182 INFO L125 PetriNetUnfolderBase]: For 474980/474980 co-relation queries the response was YES. [2024-06-28 01:35:57,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56037 conditions, 7900 events. 4241/7900 cut-off events. For 474980/474980 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 62613 event pairs, 1883 based on Foata normal form. 10/7580 useless extension candidates. Maximal degree in co-relation 55800. Up to 7105 conditions per place. [2024-06-28 01:35:57,288 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 513 selfloop transitions, 37 changer transitions 0/557 dead transitions. [2024-06-28 01:35:57,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 557 transitions, 10655 flow [2024-06-28 01:35:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:35:57,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:35:57,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:35:57,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:35:57,290 INFO L175 Difference]: Start difference. First operand has 485 places, 528 transitions, 9357 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:35:57,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 557 transitions, 10655 flow [2024-06-28 01:36:00,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 557 transitions, 10273 flow, removed 118 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:00,387 INFO L231 Difference]: Finished difference. Result has 487 places, 528 transitions, 9058 flow [2024-06-28 01:36:00,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8975, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9058, PETRI_PLACES=487, PETRI_TRANSITIONS=528} [2024-06-28 01:36:00,387 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 447 predicate places. [2024-06-28 01:36:00,387 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 528 transitions, 9058 flow [2024-06-28 01:36:00,387 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 01:36:00,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:00,388 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 01:36:00,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 01:36:00,388 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:00,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:00,388 INFO L85 PathProgramCache]: Analyzing trace with hash 190132559, now seen corresponding path program 33 times [2024-06-28 01:36:00,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:00,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656752474] [2024-06-28 01:36:00,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:00,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:00,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:01,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656752474] [2024-06-28 01:36:01,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656752474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:01,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:01,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:01,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347312656] [2024-06-28 01:36:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:01,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:01,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:01,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 528 transitions, 9058 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 01:36:01,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:01,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:01,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:03,794 INFO L124 PetriNetUnfolderBase]: 4244/7911 cut-off events. [2024-06-28 01:36:03,794 INFO L125 PetriNetUnfolderBase]: For 381689/381689 co-relation queries the response was YES. [2024-06-28 01:36:03,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54092 conditions, 7911 events. 4244/7911 cut-off events. For 381689/381689 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 62807 event pairs, 2189 based on Foata normal form. 12/7592 useless extension candidates. Maximal degree in co-relation 53854. Up to 7300 conditions per place. [2024-06-28 01:36:03,921 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 523 selfloop transitions, 25 changer transitions 0/555 dead transitions. [2024-06-28 01:36:03,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 555 transitions, 10560 flow [2024-06-28 01:36:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:03,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:36:03,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-28 01:36:03,923 INFO L175 Difference]: Start difference. First operand has 487 places, 528 transitions, 9058 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:36:03,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 555 transitions, 10560 flow [2024-06-28 01:36:06,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 555 transitions, 10465 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 01:36:06,930 INFO L231 Difference]: Finished difference. Result has 486 places, 530 transitions, 9256 flow [2024-06-28 01:36:06,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8963, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9256, PETRI_PLACES=486, PETRI_TRANSITIONS=530} [2024-06-28 01:36:06,931 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 446 predicate places. [2024-06-28 01:36:06,931 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 530 transitions, 9256 flow [2024-06-28 01:36:06,931 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 01:36:06,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:06,931 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 01:36:06,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 01:36:06,931 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:06,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:06,932 INFO L85 PathProgramCache]: Analyzing trace with hash 359561161, now seen corresponding path program 34 times [2024-06-28 01:36:06,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:06,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771202878] [2024-06-28 01:36:06,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:06,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:07,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:07,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:07,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771202878] [2024-06-28 01:36:07,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771202878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:07,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:07,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307123221] [2024-06-28 01:36:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:07,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:07,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 530 transitions, 9256 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 01:36:07,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:07,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:07,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:10,096 INFO L124 PetriNetUnfolderBase]: 4241/7891 cut-off events. [2024-06-28 01:36:10,096 INFO L125 PetriNetUnfolderBase]: For 299343/299343 co-relation queries the response was YES. [2024-06-28 01:36:10,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53692 conditions, 7891 events. 4241/7891 cut-off events. For 299343/299343 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 62600 event pairs, 1843 based on Foata normal form. 2/7566 useless extension candidates. Maximal degree in co-relation 53454. Up to 6718 conditions per place. [2024-06-28 01:36:10,222 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 466 selfloop transitions, 88 changer transitions 0/561 dead transitions. [2024-06-28 01:36:10,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 561 transitions, 10798 flow [2024-06-28 01:36:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:10,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:10,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-28 01:36:10,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-28 01:36:10,224 INFO L175 Difference]: Start difference. First operand has 486 places, 530 transitions, 9256 flow. Second operand 10 states and 161 transitions. [2024-06-28 01:36:10,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 561 transitions, 10798 flow [2024-06-28 01:36:13,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 561 transitions, 10547 flow, removed 103 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:13,229 INFO L231 Difference]: Finished difference. Result has 488 places, 532 transitions, 9426 flow [2024-06-28 01:36:13,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9011, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9426, PETRI_PLACES=488, PETRI_TRANSITIONS=532} [2024-06-28 01:36:13,229 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 448 predicate places. [2024-06-28 01:36:13,229 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 532 transitions, 9426 flow [2024-06-28 01:36:13,230 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 01:36:13,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:13,230 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 01:36:13,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 01:36:13,230 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:13,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash 367195097, now seen corresponding path program 18 times [2024-06-28 01:36:13,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:13,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93324008] [2024-06-28 01:36:13,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:13,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:13,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:13,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93324008] [2024-06-28 01:36:13,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93324008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:13,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:13,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:13,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579820926] [2024-06-28 01:36:13,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:13,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:13,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:13,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:13,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:13,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 532 transitions, 9426 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 01:36:13,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:13,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:13,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:16,405 INFO L124 PetriNetUnfolderBase]: 4374/8146 cut-off events. [2024-06-28 01:36:16,405 INFO L125 PetriNetUnfolderBase]: For 433261/433261 co-relation queries the response was YES. [2024-06-28 01:36:16,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56776 conditions, 8146 events. 4374/8146 cut-off events. For 433261/433261 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 65087 event pairs, 1883 based on Foata normal form. 8/7825 useless extension candidates. Maximal degree in co-relation 56537. Up to 6732 conditions per place. [2024-06-28 01:36:16,553 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 482 selfloop transitions, 78 changer transitions 0/567 dead transitions. [2024-06-28 01:36:16,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 567 transitions, 11362 flow [2024-06-28 01:36:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:36:16,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-28 01:36:16,555 INFO L175 Difference]: Start difference. First operand has 488 places, 532 transitions, 9426 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:36:16,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 567 transitions, 11362 flow [2024-06-28 01:36:20,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 567 transitions, 10965 flow, removed 112 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:20,076 INFO L231 Difference]: Finished difference. Result has 490 places, 534 transitions, 9523 flow [2024-06-28 01:36:20,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9029, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9523, PETRI_PLACES=490, PETRI_TRANSITIONS=534} [2024-06-28 01:36:20,077 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 450 predicate places. [2024-06-28 01:36:20,077 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 534 transitions, 9523 flow [2024-06-28 01:36:20,077 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 01:36:20,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:20,077 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 01:36:20,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 01:36:20,077 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:20,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:20,078 INFO L85 PathProgramCache]: Analyzing trace with hash 190140495, now seen corresponding path program 19 times [2024-06-28 01:36:20,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:20,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530902190] [2024-06-28 01:36:20,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:20,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:20,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:20,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:20,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530902190] [2024-06-28 01:36:20,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530902190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:20,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:20,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:20,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534032962] [2024-06-28 01:36:20,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:20,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:20,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:20,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:20,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:20,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:20,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 534 transitions, 9523 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 01:36:20,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:20,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:20,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:23,412 INFO L124 PetriNetUnfolderBase]: 4442/8291 cut-off events. [2024-06-28 01:36:23,413 INFO L125 PetriNetUnfolderBase]: For 478173/478173 co-relation queries the response was YES. [2024-06-28 01:36:23,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57734 conditions, 8291 events. 4442/8291 cut-off events. For 478173/478173 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 66619 event pairs, 2303 based on Foata normal form. 10/7967 useless extension candidates. Maximal degree in co-relation 57494. Up to 7532 conditions per place. [2024-06-28 01:36:23,546 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 530 selfloop transitions, 25 changer transitions 0/562 dead transitions. [2024-06-28 01:36:23,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 562 transitions, 10987 flow [2024-06-28 01:36:23,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:23,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-28 01:36:23,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-28 01:36:23,548 INFO L175 Difference]: Start difference. First operand has 490 places, 534 transitions, 9523 flow. Second operand 11 states and 160 transitions. [2024-06-28 01:36:23,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 562 transitions, 10987 flow [2024-06-28 01:36:27,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 562 transitions, 10693 flow, removed 104 selfloop flow, removed 6 redundant places. [2024-06-28 01:36:27,840 INFO L231 Difference]: Finished difference. Result has 495 places, 535 transitions, 9458 flow [2024-06-28 01:36:27,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9229, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9458, PETRI_PLACES=495, PETRI_TRANSITIONS=535} [2024-06-28 01:36:27,841 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 455 predicate places. [2024-06-28 01:36:27,841 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 535 transitions, 9458 flow [2024-06-28 01:36:27,841 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 01:36:27,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:27,841 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 01:36:27,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 01:36:27,842 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:27,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:27,842 INFO L85 PathProgramCache]: Analyzing trace with hash 190409265, now seen corresponding path program 20 times [2024-06-28 01:36:27,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:27,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243625091] [2024-06-28 01:36:27,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:27,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:27,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:28,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:28,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:28,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243625091] [2024-06-28 01:36:28,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243625091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:28,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:28,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:28,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615261178] [2024-06-28 01:36:28,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:28,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:28,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:28,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:28,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:28,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:28,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 535 transitions, 9458 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 01:36:28,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:28,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:28,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:31,215 INFO L124 PetriNetUnfolderBase]: 4494/8391 cut-off events. [2024-06-28 01:36:31,216 INFO L125 PetriNetUnfolderBase]: For 460805/460805 co-relation queries the response was YES. [2024-06-28 01:36:31,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58267 conditions, 8391 events. 4494/8391 cut-off events. For 460805/460805 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 67618 event pairs, 2306 based on Foata normal form. 8/8067 useless extension candidates. Maximal degree in co-relation 58025. Up to 7480 conditions per place. [2024-06-28 01:36:31,334 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 533 selfloop transitions, 26 changer transitions 0/566 dead transitions. [2024-06-28 01:36:31,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 566 transitions, 10974 flow [2024-06-28 01:36:31,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:36:31,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:36:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:36:31,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-28 01:36:31,336 INFO L175 Difference]: Start difference. First operand has 495 places, 535 transitions, 9458 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:36:31,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 566 transitions, 10974 flow [2024-06-28 01:36:35,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 566 transitions, 10793 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:35,083 INFO L231 Difference]: Finished difference. Result has 496 places, 536 transitions, 9506 flow [2024-06-28 01:36:35,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9277, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9506, PETRI_PLACES=496, PETRI_TRANSITIONS=536} [2024-06-28 01:36:35,083 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 456 predicate places. [2024-06-28 01:36:35,083 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 536 transitions, 9506 flow [2024-06-28 01:36:35,083 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 01:36:35,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:35,084 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 01:36:35,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 01:36:35,084 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:35,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1657394359, now seen corresponding path program 21 times [2024-06-28 01:36:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:35,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505776491] [2024-06-28 01:36:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:36,073 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 01:36:36,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:36,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505776491] [2024-06-28 01:36:36,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505776491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:36,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:36,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:36:36,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825985575] [2024-06-28 01:36:36,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:36,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:36:36,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:36,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:36:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:36:36,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:36,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 536 transitions, 9506 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 01:36:36,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:36,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:36,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:38,712 INFO L124 PetriNetUnfolderBase]: 4481/8363 cut-off events. [2024-06-28 01:36:38,713 INFO L125 PetriNetUnfolderBase]: For 374320/374320 co-relation queries the response was YES. [2024-06-28 01:36:38,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56329 conditions, 8363 events. 4481/8363 cut-off events. For 374320/374320 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 67399 event pairs, 2040 based on Foata normal form. 10/8034 useless extension candidates. Maximal degree in co-relation 56086. Up to 7564 conditions per place. [2024-06-28 01:36:38,852 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 503 selfloop transitions, 56 changer transitions 0/566 dead transitions. [2024-06-28 01:36:38,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 566 transitions, 10837 flow [2024-06-28 01:36:38,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-28 01:36:38,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41919191919191917 [2024-06-28 01:36:38,853 INFO L175 Difference]: Start difference. First operand has 496 places, 536 transitions, 9506 flow. Second operand 11 states and 166 transitions. [2024-06-28 01:36:38,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 566 transitions, 10837 flow [2024-06-28 01:36:42,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 566 transitions, 10528 flow, removed 130 selfloop flow, removed 8 redundant places. [2024-06-28 01:36:42,652 INFO L231 Difference]: Finished difference. Result has 500 places, 537 transitions, 9342 flow [2024-06-28 01:36:42,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9342, PETRI_PLACES=500, PETRI_TRANSITIONS=537} [2024-06-28 01:36:42,653 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 460 predicate places. [2024-06-28 01:36:42,653 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 537 transitions, 9342 flow [2024-06-28 01:36:42,653 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 01:36:42,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:42,653 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 01:36:42,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 01:36:42,654 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:42,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:42,654 INFO L85 PathProgramCache]: Analyzing trace with hash 504425625, now seen corresponding path program 22 times [2024-06-28 01:36:42,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:42,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907295649] [2024-06-28 01:36:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:42,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:43,360 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 01:36:43,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:43,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907295649] [2024-06-28 01:36:43,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907295649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:43,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:43,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:36:43,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795298157] [2024-06-28 01:36:43,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:43,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:36:43,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:43,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:36:43,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:36:43,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:43,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 537 transitions, 9342 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 01:36:43,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:43,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:43,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:46,094 INFO L124 PetriNetUnfolderBase]: 4514/8435 cut-off events. [2024-06-28 01:36:46,094 INFO L125 PetriNetUnfolderBase]: For 314278/314278 co-relation queries the response was YES. [2024-06-28 01:36:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55999 conditions, 8435 events. 4514/8435 cut-off events. For 314278/314278 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 68113 event pairs, 2312 based on Foata normal form. 8/8148 useless extension candidates. Maximal degree in co-relation 55754. Up to 7376 conditions per place. [2024-06-28 01:36:46,214 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 537 selfloop transitions, 29 changer transitions 0/573 dead transitions. [2024-06-28 01:36:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 573 transitions, 10904 flow [2024-06-28 01:36:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:36:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:36:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:36:46,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2024-06-28 01:36:46,216 INFO L175 Difference]: Start difference. First operand has 500 places, 537 transitions, 9342 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:36:46,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 573 transitions, 10904 flow [2024-06-28 01:36:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 573 transitions, 10785 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:49,238 INFO L231 Difference]: Finished difference. Result has 502 places, 538 transitions, 9459 flow [2024-06-28 01:36:49,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9459, PETRI_PLACES=502, PETRI_TRANSITIONS=538} [2024-06-28 01:36:49,239 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 462 predicate places. [2024-06-28 01:36:49,239 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 538 transitions, 9459 flow [2024-06-28 01:36:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:49,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:49,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:49,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 01:36:49,240 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:49,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:49,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1132805252, now seen corresponding path program 1 times [2024-06-28 01:36:49,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:49,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934024615] [2024-06-28 01:36:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:49,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:49,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:50,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:50,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934024615] [2024-06-28 01:36:50,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934024615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:50,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:50,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:50,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298084483] [2024-06-28 01:36:50,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:50,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:50,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:50,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:50,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:50,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:50,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 538 transitions, 9459 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:50,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:50,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:50,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:53,199 INFO L124 PetriNetUnfolderBase]: 4557/8513 cut-off events. [2024-06-28 01:36:53,199 INFO L125 PetriNetUnfolderBase]: For 320497/320497 co-relation queries the response was YES. [2024-06-28 01:36:53,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56703 conditions, 8513 events. 4557/8513 cut-off events. For 320497/320497 co-relation queries the response was YES. Maximal size of possible extension queue 631. Compared 68604 event pairs, 1821 based on Foata normal form. 6/8179 useless extension candidates. Maximal degree in co-relation 56457. Up to 7641 conditions per place. [2024-06-28 01:36:53,345 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 512 selfloop transitions, 66 changer transitions 0/585 dead transitions. [2024-06-28 01:36:53,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 585 transitions, 11019 flow [2024-06-28 01:36:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:36:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:36:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:36:53,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 01:36:53,346 INFO L175 Difference]: Start difference. First operand has 502 places, 538 transitions, 9459 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:36:53,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 585 transitions, 11019 flow [2024-06-28 01:36:56,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 504 places, 585 transitions, 10813 flow, removed 75 selfloop flow, removed 9 redundant places. [2024-06-28 01:36:56,150 INFO L231 Difference]: Finished difference. Result has 505 places, 539 transitions, 9567 flow [2024-06-28 01:36:56,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9253, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9567, PETRI_PLACES=505, PETRI_TRANSITIONS=539} [2024-06-28 01:36:56,150 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 465 predicate places. [2024-06-28 01:36:56,150 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 539 transitions, 9567 flow [2024-06-28 01:36:56,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:56,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:36:56,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:36:56,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 01:36:56,151 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:36:56,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:36:56,151 INFO L85 PathProgramCache]: Analyzing trace with hash 69425488, now seen corresponding path program 2 times [2024-06-28 01:36:56,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:36:56,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369797559] [2024-06-28 01:36:56,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:36:56,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:36:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:36:57,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:36:57,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:36:57,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369797559] [2024-06-28 01:36:57,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369797559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:36:57,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:36:57,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:36:57,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67255471] [2024-06-28 01:36:57,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:36:57,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:36:57,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:36:57,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:36:57,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:36:57,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:36:57,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 539 transitions, 9567 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:36:57,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:36:57,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:36:57,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:36:59,902 INFO L124 PetriNetUnfolderBase]: 4630/8665 cut-off events. [2024-06-28 01:36:59,902 INFO L125 PetriNetUnfolderBase]: For 340740/340740 co-relation queries the response was YES. [2024-06-28 01:37:00,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57855 conditions, 8665 events. 4630/8665 cut-off events. For 340740/340740 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 70539 event pairs, 2028 based on Foata normal form. 6/8330 useless extension candidates. Maximal degree in co-relation 57608. Up to 7775 conditions per place. [2024-06-28 01:37:00,056 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 516 selfloop transitions, 63 changer transitions 0/586 dead transitions. [2024-06-28 01:37:00,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 586 transitions, 11302 flow [2024-06-28 01:37:00,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:00,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:00,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-28 01:37:00,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-28 01:37:00,057 INFO L175 Difference]: Start difference. First operand has 505 places, 539 transitions, 9567 flow. Second operand 12 states and 189 transitions. [2024-06-28 01:37:00,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 586 transitions, 11302 flow [2024-06-28 01:37:03,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 586 transitions, 10843 flow, removed 164 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:03,573 INFO L231 Difference]: Finished difference. Result has 507 places, 541 transitions, 9600 flow [2024-06-28 01:37:03,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9275, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9600, PETRI_PLACES=507, PETRI_TRANSITIONS=541} [2024-06-28 01:37:03,573 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 467 predicate places. [2024-06-28 01:37:03,573 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 541 transitions, 9600 flow [2024-06-28 01:37:03,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:03,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:03,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:03,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 01:37:03,574 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:03,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash 675867090, now seen corresponding path program 3 times [2024-06-28 01:37:03,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:03,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414180419] [2024-06-28 01:37:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:03,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:03,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:04,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414180419] [2024-06-28 01:37:04,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414180419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:04,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361842267] [2024-06-28 01:37:04,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:04,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:04,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:04,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:04,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 541 transitions, 9600 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:04,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:04,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:04,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:07,684 INFO L124 PetriNetUnfolderBase]: 4682/8770 cut-off events. [2024-06-28 01:37:07,684 INFO L125 PetriNetUnfolderBase]: For 349579/349579 co-relation queries the response was YES. [2024-06-28 01:37:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58162 conditions, 8770 events. 4682/8770 cut-off events. For 349579/349579 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 71552 event pairs, 2165 based on Foata normal form. 8/8444 useless extension candidates. Maximal degree in co-relation 57914. Up to 7899 conditions per place. [2024-06-28 01:37:07,838 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 488 selfloop transitions, 82 changer transitions 0/577 dead transitions. [2024-06-28 01:37:07,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 577 transitions, 11134 flow [2024-06-28 01:37:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:07,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-28 01:37:07,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41435185185185186 [2024-06-28 01:37:07,840 INFO L175 Difference]: Start difference. First operand has 507 places, 541 transitions, 9600 flow. Second operand 12 states and 179 transitions. [2024-06-28 01:37:07,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 577 transitions, 11134 flow [2024-06-28 01:37:11,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 577 transitions, 10849 flow, removed 82 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:11,419 INFO L231 Difference]: Finished difference. Result has 509 places, 542 transitions, 9672 flow [2024-06-28 01:37:11,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9315, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9672, PETRI_PLACES=509, PETRI_TRANSITIONS=542} [2024-06-28 01:37:11,420 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 469 predicate places. [2024-06-28 01:37:11,420 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 542 transitions, 9672 flow [2024-06-28 01:37:11,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:11,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:11,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 01:37:11,421 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:11,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1077404820, now seen corresponding path program 4 times [2024-06-28 01:37:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164463562] [2024-06-28 01:37:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:12,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:12,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:12,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164463562] [2024-06-28 01:37:12,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164463562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:12,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:12,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:12,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060449425] [2024-06-28 01:37:12,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:12,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:12,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:12,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:12,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 542 transitions, 9672 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:12,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:12,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:12,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:15,505 INFO L124 PetriNetUnfolderBase]: 4718/8843 cut-off events. [2024-06-28 01:37:15,505 INFO L125 PetriNetUnfolderBase]: For 336551/336551 co-relation queries the response was YES. [2024-06-28 01:37:15,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58546 conditions, 8843 events. 4718/8843 cut-off events. For 336551/336551 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 72409 event pairs, 2157 based on Foata normal form. 6/8516 useless extension candidates. Maximal degree in co-relation 58297. Up to 8044 conditions per place. [2024-06-28 01:37:15,667 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 488 selfloop transitions, 83 changer transitions 0/578 dead transitions. [2024-06-28 01:37:15,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 578 transitions, 11182 flow [2024-06-28 01:37:15,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:15,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:15,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 179 transitions. [2024-06-28 01:37:15,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41435185185185186 [2024-06-28 01:37:15,669 INFO L175 Difference]: Start difference. First operand has 509 places, 542 transitions, 9672 flow. Second operand 12 states and 179 transitions. [2024-06-28 01:37:15,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 578 transitions, 11182 flow [2024-06-28 01:37:18,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 578 transitions, 10900 flow, removed 72 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:18,973 INFO L231 Difference]: Finished difference. Result has 512 places, 543 transitions, 9746 flow [2024-06-28 01:37:18,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9390, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9746, PETRI_PLACES=512, PETRI_TRANSITIONS=543} [2024-06-28 01:37:18,974 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 472 predicate places. [2024-06-28 01:37:18,974 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 543 transitions, 9746 flow [2024-06-28 01:37:18,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:18,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:18,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:18,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 01:37:18,974 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:18,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:18,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1071609990, now seen corresponding path program 5 times [2024-06-28 01:37:18,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:18,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718012723] [2024-06-28 01:37:18,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:18,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:20,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:20,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718012723] [2024-06-28 01:37:20,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718012723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:20,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:20,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:20,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356320756] [2024-06-28 01:37:20,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:20,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:20,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:20,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:20,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 543 transitions, 9746 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:20,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:20,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:20,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:23,161 INFO L124 PetriNetUnfolderBase]: 4754/8918 cut-off events. [2024-06-28 01:37:23,161 INFO L125 PetriNetUnfolderBase]: For 335087/335087 co-relation queries the response was YES. [2024-06-28 01:37:23,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58873 conditions, 8918 events. 4754/8918 cut-off events. For 335087/335087 co-relation queries the response was YES. Maximal size of possible extension queue 666. Compared 73208 event pairs, 2189 based on Foata normal form. 6/8593 useless extension candidates. Maximal degree in co-relation 58623. Up to 8106 conditions per place. [2024-06-28 01:37:23,321 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 484 selfloop transitions, 90 changer transitions 0/581 dead transitions. [2024-06-28 01:37:23,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 581 transitions, 11276 flow [2024-06-28 01:37:23,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-28 01:37:23,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-28 01:37:23,323 INFO L175 Difference]: Start difference. First operand has 512 places, 543 transitions, 9746 flow. Second operand 12 states and 183 transitions. [2024-06-28 01:37:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 581 transitions, 11276 flow [2024-06-28 01:37:26,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 581 transitions, 10924 flow, removed 96 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:26,891 INFO L231 Difference]: Finished difference. Result has 514 places, 544 transitions, 9764 flow [2024-06-28 01:37:26,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9394, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9764, PETRI_PLACES=514, PETRI_TRANSITIONS=544} [2024-06-28 01:37:26,891 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 474 predicate places. [2024-06-28 01:37:26,891 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 544 transitions, 9764 flow [2024-06-28 01:37:26,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:26,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:26,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:26,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 01:37:26,892 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:26,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:26,893 INFO L85 PathProgramCache]: Analyzing trace with hash 920569620, now seen corresponding path program 6 times [2024-06-28 01:37:26,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:26,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373772947] [2024-06-28 01:37:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:26,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:28,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:28,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:28,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373772947] [2024-06-28 01:37:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373772947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:28,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:28,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:28,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25594058] [2024-06-28 01:37:28,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:28,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:28,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:28,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:28,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:28,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:28,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 544 transitions, 9764 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:28,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:28,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:28,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:31,401 INFO L124 PetriNetUnfolderBase]: 4798/9005 cut-off events. [2024-06-28 01:37:31,401 INFO L125 PetriNetUnfolderBase]: For 339647/339647 co-relation queries the response was YES. [2024-06-28 01:37:31,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59289 conditions, 9005 events. 4798/9005 cut-off events. For 339647/339647 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 74162 event pairs, 2231 based on Foata normal form. 6/8669 useless extension candidates. Maximal degree in co-relation 59038. Up to 8244 conditions per place. [2024-06-28 01:37:31,556 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 519 selfloop transitions, 62 changer transitions 0/588 dead transitions. [2024-06-28 01:37:31,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 588 transitions, 11330 flow [2024-06-28 01:37:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:31,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-28 01:37:31,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43287037037037035 [2024-06-28 01:37:31,558 INFO L175 Difference]: Start difference. First operand has 514 places, 544 transitions, 9764 flow. Second operand 12 states and 187 transitions. [2024-06-28 01:37:31,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 588 transitions, 11330 flow [2024-06-28 01:37:35,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 588 transitions, 10974 flow, removed 90 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:35,474 INFO L231 Difference]: Finished difference. Result has 516 places, 545 transitions, 9723 flow [2024-06-28 01:37:35,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9410, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9723, PETRI_PLACES=516, PETRI_TRANSITIONS=545} [2024-06-28 01:37:35,474 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 476 predicate places. [2024-06-28 01:37:35,474 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 545 transitions, 9723 flow [2024-06-28 01:37:35,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:35,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:35,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:35,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 01:37:35,475 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:35,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:35,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1036914396, now seen corresponding path program 7 times [2024-06-28 01:37:35,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:35,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912688733] [2024-06-28 01:37:35,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:35,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912688733] [2024-06-28 01:37:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912688733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:36,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780751162] [2024-06-28 01:37:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:36,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:36,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:36,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:36,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:36,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:36,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 545 transitions, 9723 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:36,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:36,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:36,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:39,400 INFO L124 PetriNetUnfolderBase]: 4901/9217 cut-off events. [2024-06-28 01:37:39,400 INFO L125 PetriNetUnfolderBase]: For 338635/338635 co-relation queries the response was YES. [2024-06-28 01:37:39,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60069 conditions, 9217 events. 4901/9217 cut-off events. For 338635/338635 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 76397 event pairs, 2139 based on Foata normal form. 6/8880 useless extension candidates. Maximal degree in co-relation 59817. Up to 8268 conditions per place. [2024-06-28 01:37:39,572 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 522 selfloop transitions, 62 changer transitions 0/591 dead transitions. [2024-06-28 01:37:39,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 591 transitions, 11313 flow [2024-06-28 01:37:39,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:39,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:39,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-28 01:37:39,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-06-28 01:37:39,573 INFO L175 Difference]: Start difference. First operand has 516 places, 545 transitions, 9723 flow. Second operand 12 states and 190 transitions. [2024-06-28 01:37:39,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 591 transitions, 11313 flow [2024-06-28 01:37:43,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 591 transitions, 11020 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:43,491 INFO L231 Difference]: Finished difference. Result has 518 places, 548 transitions, 9780 flow [2024-06-28 01:37:43,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9430, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9780, PETRI_PLACES=518, PETRI_TRANSITIONS=548} [2024-06-28 01:37:43,492 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 478 predicate places. [2024-06-28 01:37:43,492 INFO L495 AbstractCegarLoop]: Abstraction has has 518 places, 548 transitions, 9780 flow [2024-06-28 01:37:43,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:43,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:43,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:43,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 01:37:43,493 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:43,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:43,493 INFO L85 PathProgramCache]: Analyzing trace with hash 796125834, now seen corresponding path program 8 times [2024-06-28 01:37:43,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:43,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300396786] [2024-06-28 01:37:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:43,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:44,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:44,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300396786] [2024-06-28 01:37:44,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300396786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:44,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263541957] [2024-06-28 01:37:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:44,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:44,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:44,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:44,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:44,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:44,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 548 transitions, 9780 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:44,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:44,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:44,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:47,769 INFO L124 PetriNetUnfolderBase]: 4959/9335 cut-off events. [2024-06-28 01:37:47,770 INFO L125 PetriNetUnfolderBase]: For 343993/343993 co-relation queries the response was YES. [2024-06-28 01:37:47,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60683 conditions, 9335 events. 4959/9335 cut-off events. For 343993/343993 co-relation queries the response was YES. Maximal size of possible extension queue 698. Compared 77777 event pairs, 2303 based on Foata normal form. 6/9007 useless extension candidates. Maximal degree in co-relation 60430. Up to 8493 conditions per place. [2024-06-28 01:37:47,932 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 487 selfloop transitions, 91 changer transitions 0/585 dead transitions. [2024-06-28 01:37:47,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 585 transitions, 11322 flow [2024-06-28 01:37:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:47,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:37:47,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:37:47,934 INFO L175 Difference]: Start difference. First operand has 518 places, 548 transitions, 9780 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:37:47,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 585 transitions, 11322 flow [2024-06-28 01:37:52,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 585 transitions, 11034 flow, removed 85 selfloop flow, removed 10 redundant places. [2024-06-28 01:37:52,188 INFO L231 Difference]: Finished difference. Result has 520 places, 550 transitions, 9883 flow [2024-06-28 01:37:52,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9492, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9883, PETRI_PLACES=520, PETRI_TRANSITIONS=550} [2024-06-28 01:37:52,189 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 480 predicate places. [2024-06-28 01:37:52,189 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 550 transitions, 9883 flow [2024-06-28 01:37:52,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:52,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:52,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:52,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 01:37:52,192 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:52,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:52,193 INFO L85 PathProgramCache]: Analyzing trace with hash 796298814, now seen corresponding path program 9 times [2024-06-28 01:37:52,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997613504] [2024-06-28 01:37:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:37:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:37:53,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:37:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997613504] [2024-06-28 01:37:53,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997613504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:37:53,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:37:53,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:37:53,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932675402] [2024-06-28 01:37:53,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:37:53,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:37:53,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:37:53,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:37:53,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:37:53,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:37:53,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 550 transitions, 9883 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:53,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:37:53,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:37:53,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:37:56,354 INFO L124 PetriNetUnfolderBase]: 5039/9500 cut-off events. [2024-06-28 01:37:56,355 INFO L125 PetriNetUnfolderBase]: For 348373/348373 co-relation queries the response was YES. [2024-06-28 01:37:56,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61540 conditions, 9500 events. 5039/9500 cut-off events. For 348373/348373 co-relation queries the response was YES. Maximal size of possible extension queue 713. Compared 79547 event pairs, 2383 based on Foata normal form. 6/9168 useless extension candidates. Maximal degree in co-relation 61286. Up to 8693 conditions per place. [2024-06-28 01:37:56,496 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 495 selfloop transitions, 84 changer transitions 0/586 dead transitions. [2024-06-28 01:37:56,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 586 transitions, 11433 flow [2024-06-28 01:37:56,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:37:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:37:56,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 01:37:56,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:37:56,498 INFO L175 Difference]: Start difference. First operand has 520 places, 550 transitions, 9883 flow. Second operand 12 states and 180 transitions. [2024-06-28 01:37:56,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 586 transitions, 11433 flow [2024-06-28 01:37:59,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 586 transitions, 11098 flow, removed 87 selfloop flow, removed 9 redundant places. [2024-06-28 01:37:59,894 INFO L231 Difference]: Finished difference. Result has 523 places, 553 transitions, 9949 flow [2024-06-28 01:37:59,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9548, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9949, PETRI_PLACES=523, PETRI_TRANSITIONS=553} [2024-06-28 01:37:59,895 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 483 predicate places. [2024-06-28 01:37:59,895 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 553 transitions, 9949 flow [2024-06-28 01:37:59,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:37:59,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:37:59,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:37:59,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 01:37:59,895 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:37:59,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:37:59,896 INFO L85 PathProgramCache]: Analyzing trace with hash -948058434, now seen corresponding path program 1 times [2024-06-28 01:37:59,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:37:59,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075696779] [2024-06-28 01:37:59,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:37:59,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:37:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:01,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:01,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075696779] [2024-06-28 01:38:01,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075696779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:01,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:01,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321992984] [2024-06-28 01:38:01,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:01,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:01,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 553 transitions, 9949 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:01,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:01,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:01,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:04,273 INFO L124 PetriNetUnfolderBase]: 5123/9667 cut-off events. [2024-06-28 01:38:04,273 INFO L125 PetriNetUnfolderBase]: For 384475/384475 co-relation queries the response was YES. [2024-06-28 01:38:04,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62828 conditions, 9667 events. 5123/9667 cut-off events. For 384475/384475 co-relation queries the response was YES. Maximal size of possible extension queue 730. Compared 81281 event pairs, 2491 based on Foata normal form. 8/9344 useless extension candidates. Maximal degree in co-relation 62573. Up to 8464 conditions per place. [2024-06-28 01:38:04,473 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 491 selfloop transitions, 90 changer transitions 0/588 dead transitions. [2024-06-28 01:38:04,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 588 transitions, 11541 flow [2024-06-28 01:38:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 181 transitions. [2024-06-28 01:38:04,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41898148148148145 [2024-06-28 01:38:04,492 INFO L175 Difference]: Start difference. First operand has 523 places, 553 transitions, 9949 flow. Second operand 12 states and 181 transitions. [2024-06-28 01:38:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 588 transitions, 11541 flow [2024-06-28 01:38:08,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 588 transitions, 11177 flow, removed 87 selfloop flow, removed 12 redundant places. [2024-06-28 01:38:08,749 INFO L231 Difference]: Finished difference. Result has 523 places, 555 transitions, 10024 flow [2024-06-28 01:38:08,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9585, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10024, PETRI_PLACES=523, PETRI_TRANSITIONS=555} [2024-06-28 01:38:08,750 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 483 predicate places. [2024-06-28 01:38:08,750 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 555 transitions, 10024 flow [2024-06-28 01:38:08,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:08,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:08,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:08,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 01:38:08,751 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:08,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:08,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1613213140, now seen corresponding path program 10 times [2024-06-28 01:38:08,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:08,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273492139] [2024-06-28 01:38:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:08,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:09,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:09,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273492139] [2024-06-28 01:38:09,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273492139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:09,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:09,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:09,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987832106] [2024-06-28 01:38:09,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:09,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:09,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:09,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:09,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:09,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:09,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 555 transitions, 10024 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:09,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:09,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:09,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:13,590 INFO L124 PetriNetUnfolderBase]: 5197/9825 cut-off events. [2024-06-28 01:38:13,591 INFO L125 PetriNetUnfolderBase]: For 373159/373159 co-relation queries the response was YES. [2024-06-28 01:38:13,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63609 conditions, 9825 events. 5197/9825 cut-off events. For 373159/373159 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 83078 event pairs, 2468 based on Foata normal form. 6/9486 useless extension candidates. Maximal degree in co-relation 63353. Up to 9005 conditions per place. [2024-06-28 01:38:13,764 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 526 selfloop transitions, 59 changer transitions 0/592 dead transitions. [2024-06-28 01:38:13,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 592 transitions, 11574 flow [2024-06-28 01:38:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:38:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:38:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:38:13,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43686868686868685 [2024-06-28 01:38:13,766 INFO L175 Difference]: Start difference. First operand has 523 places, 555 transitions, 10024 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:38:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 592 transitions, 11574 flow [2024-06-28 01:38:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 592 transitions, 11275 flow, removed 73 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:18,031 INFO L231 Difference]: Finished difference. Result has 524 places, 557 transitions, 10059 flow [2024-06-28 01:38:18,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9725, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10059, PETRI_PLACES=524, PETRI_TRANSITIONS=557} [2024-06-28 01:38:18,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 484 predicate places. [2024-06-28 01:38:18,032 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 557 transitions, 10059 flow [2024-06-28 01:38:18,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:18,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:18,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:18,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 01:38:18,033 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:18,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1412627842, now seen corresponding path program 11 times [2024-06-28 01:38:18,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:18,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443871211] [2024-06-28 01:38:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:18,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:19,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:19,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:19,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443871211] [2024-06-28 01:38:19,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443871211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:19,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:19,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:19,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276221968] [2024-06-28 01:38:19,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:19,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:19,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:19,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:19,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:19,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:19,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 557 transitions, 10059 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:19,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:19,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:19,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:23,266 INFO L124 PetriNetUnfolderBase]: 5233/9897 cut-off events. [2024-06-28 01:38:23,266 INFO L125 PetriNetUnfolderBase]: For 370058/370058 co-relation queries the response was YES. [2024-06-28 01:38:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63874 conditions, 9897 events. 5233/9897 cut-off events. For 370058/370058 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 83828 event pairs, 2529 based on Foata normal form. 6/9557 useless extension candidates. Maximal degree in co-relation 63617. Up to 9260 conditions per place. [2024-06-28 01:38:23,408 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 519 selfloop transitions, 66 changer transitions 0/592 dead transitions. [2024-06-28 01:38:23,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 592 transitions, 11611 flow [2024-06-28 01:38:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:23,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 180 transitions. [2024-06-28 01:38:23,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-28 01:38:23,410 INFO L175 Difference]: Start difference. First operand has 524 places, 557 transitions, 10059 flow. Second operand 12 states and 180 transitions. [2024-06-28 01:38:23,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 592 transitions, 11611 flow [2024-06-28 01:38:27,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 592 transitions, 11321 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:27,608 INFO L231 Difference]: Finished difference. Result has 527 places, 558 transitions, 10101 flow [2024-06-28 01:38:27,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9769, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10101, PETRI_PLACES=527, PETRI_TRANSITIONS=558} [2024-06-28 01:38:27,608 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 487 predicate places. [2024-06-28 01:38:27,608 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 558 transitions, 10101 flow [2024-06-28 01:38:27,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:27,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:27,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:27,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 01:38:27,609 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:27,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:27,609 INFO L85 PathProgramCache]: Analyzing trace with hash -872319468, now seen corresponding path program 12 times [2024-06-28 01:38:27,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:27,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103719032] [2024-06-28 01:38:27,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:27,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:28,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:28,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:28,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103719032] [2024-06-28 01:38:28,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103719032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:28,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:28,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:28,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233596469] [2024-06-28 01:38:28,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:28,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:28,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:28,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:28,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:29,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:29,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 558 transitions, 10101 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:29,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:29,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:29,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:32,782 INFO L124 PetriNetUnfolderBase]: 5269/9969 cut-off events. [2024-06-28 01:38:32,782 INFO L125 PetriNetUnfolderBase]: For 375154/375154 co-relation queries the response was YES. [2024-06-28 01:38:32,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64244 conditions, 9969 events. 5269/9969 cut-off events. For 375154/375154 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 84565 event pairs, 2541 based on Foata normal form. 6/9630 useless extension candidates. Maximal degree in co-relation 63986. Up to 9288 conditions per place. [2024-06-28 01:38:33,068 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 519 selfloop transitions, 69 changer transitions 0/595 dead transitions. [2024-06-28 01:38:33,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 595 transitions, 11673 flow [2024-06-28 01:38:33,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:33,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:33,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-28 01:38:33,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-06-28 01:38:33,069 INFO L175 Difference]: Start difference. First operand has 527 places, 558 transitions, 10101 flow. Second operand 12 states and 184 transitions. [2024-06-28 01:38:33,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 595 transitions, 11673 flow [2024-06-28 01:38:37,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 595 transitions, 11359 flow, removed 92 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:37,299 INFO L231 Difference]: Finished difference. Result has 529 places, 559 transitions, 10127 flow [2024-06-28 01:38:37,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9787, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10127, PETRI_PLACES=529, PETRI_TRANSITIONS=559} [2024-06-28 01:38:37,300 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 489 predicate places. [2024-06-28 01:38:37,300 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 559 transitions, 10127 flow [2024-06-28 01:38:37,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:37,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:37,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 01:38:37,311 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:37,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:37,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1673815172, now seen corresponding path program 13 times [2024-06-28 01:38:37,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:37,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929094228] [2024-06-28 01:38:37,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:37,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:38,650 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 01:38:38,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:38,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929094228] [2024-06-28 01:38:38,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929094228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:38,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:38,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:38,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279667001] [2024-06-28 01:38:38,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:38,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:38,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:38,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:38,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:38,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:38,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 559 transitions, 10127 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:38,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:38,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:38,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:42,805 INFO L124 PetriNetUnfolderBase]: 5313/10061 cut-off events. [2024-06-28 01:38:42,805 INFO L125 PetriNetUnfolderBase]: For 379799/379799 co-relation queries the response was YES. [2024-06-28 01:38:42,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64667 conditions, 10061 events. 5313/10061 cut-off events. For 379799/379799 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 85600 event pairs, 2561 based on Foata normal form. 6/9721 useless extension candidates. Maximal degree in co-relation 64408. Up to 9352 conditions per place. [2024-06-28 01:38:42,960 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 529 selfloop transitions, 66 changer transitions 0/602 dead transitions. [2024-06-28 01:38:42,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 602 transitions, 11735 flow [2024-06-28 01:38:42,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:42,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 188 transitions. [2024-06-28 01:38:42,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-06-28 01:38:42,961 INFO L175 Difference]: Start difference. First operand has 529 places, 559 transitions, 10127 flow. Second operand 12 states and 188 transitions. [2024-06-28 01:38:42,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 602 transitions, 11735 flow [2024-06-28 01:38:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 602 transitions, 11413 flow, removed 93 selfloop flow, removed 10 redundant places. [2024-06-28 01:38:47,329 INFO L231 Difference]: Finished difference. Result has 531 places, 560 transitions, 10141 flow [2024-06-28 01:38:47,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9805, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10141, PETRI_PLACES=531, PETRI_TRANSITIONS=560} [2024-06-28 01:38:47,330 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 491 predicate places. [2024-06-28 01:38:47,330 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 560 transitions, 10141 flow [2024-06-28 01:38:47,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:47,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:47,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:47,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 01:38:47,330 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:47,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:47,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1011068726, now seen corresponding path program 14 times [2024-06-28 01:38:47,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:47,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855555240] [2024-06-28 01:38:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:47,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855555240] [2024-06-28 01:38:48,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855555240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:48,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:48,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:48,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841136959] [2024-06-28 01:38:48,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:48,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:48,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:49,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:49,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 560 transitions, 10141 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:49,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:49,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:49,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:38:52,979 INFO L124 PetriNetUnfolderBase]: 5349/10135 cut-off events. [2024-06-28 01:38:52,979 INFO L125 PetriNetUnfolderBase]: For 385013/385013 co-relation queries the response was YES. [2024-06-28 01:38:53,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65008 conditions, 10135 events. 5349/10135 cut-off events. For 385013/385013 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 86484 event pairs, 2823 based on Foata normal form. 6/9799 useless extension candidates. Maximal degree in co-relation 64748. Up to 9345 conditions per place. [2024-06-28 01:38:53,141 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 552 selfloop transitions, 42 changer transitions 0/601 dead transitions. [2024-06-28 01:38:53,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 542 places, 601 transitions, 11782 flow [2024-06-28 01:38:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:38:53,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:38:53,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-28 01:38:53,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-28 01:38:53,143 INFO L175 Difference]: Start difference. First operand has 531 places, 560 transitions, 10141 flow. Second operand 12 states and 186 transitions. [2024-06-28 01:38:53,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 542 places, 601 transitions, 11782 flow [2024-06-28 01:38:57,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 601 transitions, 11467 flow, removed 94 selfloop flow, removed 9 redundant places. [2024-06-28 01:38:57,499 INFO L231 Difference]: Finished difference. Result has 534 places, 561 transitions, 10116 flow [2024-06-28 01:38:57,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9826, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=518, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10116, PETRI_PLACES=534, PETRI_TRANSITIONS=561} [2024-06-28 01:38:57,500 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 494 predicate places. [2024-06-28 01:38:57,500 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 561 transitions, 10116 flow [2024-06-28 01:38:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:57,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:38:57,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:38:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 01:38:57,500 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:38:57,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:38:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash 115149892, now seen corresponding path program 15 times [2024-06-28 01:38:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:38:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464860112] [2024-06-28 01:38:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:38:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:38:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:38:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:38:58,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:38:58,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464860112] [2024-06-28 01:38:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464860112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:38:58,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:38:58,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:38:58,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993503126] [2024-06-28 01:38:58,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:38:58,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:38:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:38:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:38:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:38:58,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-28 01:38:58,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 561 transitions, 10116 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:38:58,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:38:58,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-28 01:38:58,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:39:02,382 INFO L124 PetriNetUnfolderBase]: 5393/10225 cut-off events. [2024-06-28 01:39:02,383 INFO L125 PetriNetUnfolderBase]: For 388709/388709 co-relation queries the response was YES. [2024-06-28 01:39:02,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65395 conditions, 10225 events. 5393/10225 cut-off events. For 388709/388709 co-relation queries the response was YES. Maximal size of possible extension queue 787. Compared 87188 event pairs, 2352 based on Foata normal form. 6/9887 useless extension candidates. Maximal degree in co-relation 65134. Up to 8503 conditions per place. [2024-06-28 01:39:02,533 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 503 selfloop transitions, 94 changer transitions 0/604 dead transitions. [2024-06-28 01:39:02,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 604 transitions, 11728 flow [2024-06-28 01:39:02,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:39:02,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:39:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:39:02,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2024-06-28 01:39:02,534 INFO L175 Difference]: Start difference. First operand has 534 places, 561 transitions, 10116 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:39:02,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 604 transitions, 11728 flow