./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.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 01:43:39,602 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:43:39,641 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:43:39,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:43:39,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:43:39,661 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:43:39,662 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:43:39,662 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:43:39,662 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:43:39,663 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:43:39,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:43:39,663 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:43:39,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:43:39,664 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:43:39,664 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:43:39,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:43:39,665 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:43:39,665 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:43:39,666 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:43:39,666 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:43:39,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:43:39,667 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:43:39,667 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:43:39,667 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:43:39,668 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:43:39,668 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:43:39,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:43:39,669 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:43:39,669 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:43:39,669 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:43:39,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:43:39,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:43:39,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:39,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:43:39,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:43:39,671 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:43:39,671 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:43:39,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:43:39,672 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:43:39,672 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:43:39,672 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:43:39,673 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:43:39,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:43:39,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:43:39,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:43:39,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:43:39,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:43:39,849 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:43:39,850 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:43:39,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 01:43:41,006 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:43:41,221 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:43:41,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-28 01:43:41,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5de869bf/0e6156cfe3324aba9f66aece4a27b35d/FLAGa478db1af [2024-06-28 01:43:41,253 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5de869bf/0e6156cfe3324aba9f66aece4a27b35d [2024-06-28 01:43:41,256 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:43:41,256 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:43:41,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.yml/witness.yml [2024-06-28 01:43:41,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:43:41,362 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:43:41,364 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:41,364 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:43:41,368 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:43:41,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:41" (1/2) ... [2024-06-28 01:43:41,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c11962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:41, skipping insertion in model container [2024-06-28 01:43:41,369 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:43:41" (1/2) ... [2024-06-28 01:43:41,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49f66f4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:43:41, skipping insertion in model container [2024-06-28 01:43:41,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:41" (2/2) ... [2024-06-28 01:43:41,370 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c11962a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:41, skipping insertion in model container [2024-06-28 01:43:41,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:41" (2/2) ... [2024-06-28 01:43:41,370 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:43:41,429 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:43:41,431 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:43:41,431 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-28 01:43:41,431 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:43:41,431 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-28 01:43:41,468 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:43:41,604 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/rfi004.i[983,996] [2024-06-28 01:43:41,759 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:41,766 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:43:41,816 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/rfi004.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:43:41,922 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:43:41,967 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:43:41,968 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:41 WrapperNode [2024-06-28 01:43:41,968 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:43:41,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:41,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:43:41,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:43:41,975 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,005 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,036 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 117 [2024-06-28 01:43:42,038 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:43:42,039 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:43:42,039 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:43:42,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:43:42,049 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,049 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,051 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,071 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 01:43:42,071 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,072 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,079 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,081 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,083 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,084 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:43:42,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:43:42,095 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:43:42,095 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:43:42,096 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 01:43:41" (1/1) ... [2024-06-28 01:43:42,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:43:42,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:43:42,131 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 01:43:42,147 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 01:43:42,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:43:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:43:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:43:42,161 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:43:42,161 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:43:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:43:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:43:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:43:42,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:43:42,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:43:42,163 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 01:43:42,279 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:43:42,280 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:43:42,520 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:43:42,520 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:43:42,658 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:43:42,658 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:43:42,658 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:42 BoogieIcfgContainer [2024-06-28 01:43:42,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:43:42,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:43:42,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:43:42,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:43:42,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:43:41" (1/4) ... [2024-06-28 01:43:42,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad39f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:43:42, skipping insertion in model container [2024-06-28 01:43:42,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:43:41" (2/4) ... [2024-06-28 01:43:42,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad39f86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:43:42, skipping insertion in model container [2024-06-28 01:43:42,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:43:41" (3/4) ... [2024-06-28 01:43:42,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad39f86 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:43:42, skipping insertion in model container [2024-06-28 01:43:42,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:43:42" (4/4) ... [2024-06-28 01:43:42,664 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-28 01:43:42,678 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:43:42,678 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:43:42,678 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:43:42,706 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:43:42,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:43:42,749 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-28 01:43:42,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:42,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-28 01:43:42,751 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-28 01:43:42,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-28 01:43:42,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:43:42,764 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;@2f08e5e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:43:42,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:43:42,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:43:42,767 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:43:42,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:43:42,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:43:42,768 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 01:43:42,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,771 INFO L85 PathProgramCache]: Analyzing trace with hash 311867539, now seen corresponding path program 1 times [2024-06-28 01:43:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12308305] [2024-06-28 01:43:42,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:43,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12308305] [2024-06-28 01:43:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12308305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:43,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304412327] [2024-06-28 01:43:43,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:43,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:43,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:43,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2024-06-28 01:43:43,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:43,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2024-06-28 01:43:43,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:43,791 INFO L124 PetriNetUnfolderBase]: 384/723 cut-off events. [2024-06-28 01:43:43,791 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-28 01:43:43,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 723 events. 384/723 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3833 event pairs, 160 based on Foata normal form. 36/705 useless extension candidates. Maximal degree in co-relation 1376. Up to 639 conditions per place. [2024-06-28 01:43:43,797 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 29 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:43:43,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 167 flow [2024-06-28 01:43:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:43,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:43:43,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7192982456140351 [2024-06-28 01:43:43,807 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:43:43,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 167 flow [2024-06-28 01:43:43,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 164 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:43,811 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-28 01:43:43,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-28 01:43:43,815 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-28 01:43:43,815 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-28 01:43:43,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:43,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:43,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:43:43,816 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 01:43:43,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:43,817 INFO L85 PathProgramCache]: Analyzing trace with hash -942147624, now seen corresponding path program 1 times [2024-06-28 01:43:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:43,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890861344] [2024-06-28 01:43:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:43,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:44,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:44,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890861344] [2024-06-28 01:43:44,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890861344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:44,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:44,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:43:44,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777551733] [2024-06-28 01:43:44,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:44,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:43:44,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:44,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:43:44,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:43:44,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 01:43:44,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:44,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 01:43:44,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:44,398 INFO L124 PetriNetUnfolderBase]: 434/871 cut-off events. [2024-06-28 01:43:44,399 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2024-06-28 01:43:44,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1799 conditions, 871 events. 434/871 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4871 event pairs, 221 based on Foata normal form. 4/805 useless extension candidates. Maximal degree in co-relation 1787. Up to 686 conditions per place. [2024-06-28 01:43:44,406 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 39 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 01:43:44,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 242 flow [2024-06-28 01:43:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:43:44,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:43:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-06-28 01:43:44,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2024-06-28 01:43:44,410 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 4 states and 104 transitions. [2024-06-28 01:43:44,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 242 flow [2024-06-28 01:43:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:44,412 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 136 flow [2024-06-28 01:43:44,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2024-06-28 01:43:44,413 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2024-06-28 01:43:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 136 flow [2024-06-28 01:43:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:44,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:44,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:43:44,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:44,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:44,417 INFO L85 PathProgramCache]: Analyzing trace with hash 831935368, now seen corresponding path program 1 times [2024-06-28 01:43:44,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:44,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800785450] [2024-06-28 01:43:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:44,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:44,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:44,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:44,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800785450] [2024-06-28 01:43:44,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800785450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:44,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:44,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:44,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654321555] [2024-06-28 01:43:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:44,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:44,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:44,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:44,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:44,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 38 [2024-06-28 01:43:44,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:44,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 38 [2024-06-28 01:43:44,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:44,529 INFO L124 PetriNetUnfolderBase]: 143/371 cut-off events. [2024-06-28 01:43:44,529 INFO L125 PetriNetUnfolderBase]: For 113/120 co-relation queries the response was YES. [2024-06-28 01:43:44,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 742 conditions, 371 events. 143/371 cut-off events. For 113/120 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2016 event pairs, 67 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 728. Up to 211 conditions per place. [2024-06-28 01:43:44,531 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 20 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-28 01:43:44,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 179 flow [2024-06-28 01:43:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:44,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:44,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-06-28 01:43:44,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7543859649122807 [2024-06-28 01:43:44,532 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 136 flow. Second operand 3 states and 86 transitions. [2024-06-28 01:43:44,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 179 flow [2024-06-28 01:43:44,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 170 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:44,533 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 116 flow [2024-06-28 01:43:44,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2024-06-28 01:43:44,534 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-28 01:43:44,534 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 116 flow [2024-06-28 01:43:44,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:44,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:44,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:43:44,535 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:44,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 624878164, now seen corresponding path program 1 times [2024-06-28 01:43:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:44,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542750175] [2024-06-28 01:43:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:45,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542750175] [2024-06-28 01:43:45,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542750175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:45,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:43:45,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955536003] [2024-06-28 01:43:45,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:45,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:43:45,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:45,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:43:45,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:43:45,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-28 01:43:45,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:45,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-28 01:43:45,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:45,273 INFO L124 PetriNetUnfolderBase]: 373/752 cut-off events. [2024-06-28 01:43:45,273 INFO L125 PetriNetUnfolderBase]: For 306/306 co-relation queries the response was YES. [2024-06-28 01:43:45,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 752 events. 373/752 cut-off events. For 306/306 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4046 event pairs, 207 based on Foata normal form. 1/717 useless extension candidates. Maximal degree in co-relation 1645. Up to 613 conditions per place. [2024-06-28 01:43:45,277 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 35 selfloop transitions, 7 changer transitions 2/55 dead transitions. [2024-06-28 01:43:45,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 55 transitions, 250 flow [2024-06-28 01:43:45,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:43:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:43:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 106 transitions. [2024-06-28 01:43:45,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2024-06-28 01:43:45,278 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 116 flow. Second operand 5 states and 106 transitions. [2024-06-28 01:43:45,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 55 transitions, 250 flow [2024-06-28 01:43:45,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:45,280 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 157 flow [2024-06-28 01:43:45,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-28 01:43:45,281 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-28 01:43:45,281 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 157 flow [2024-06-28 01:43:45,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:45,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:43:45,281 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 01:43:45,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash -472140624, now seen corresponding path program 1 times [2024-06-28 01:43:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745679637] [2024-06-28 01:43:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:45,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:45,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:45,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745679637] [2024-06-28 01:43:45,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745679637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:45,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:45,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:43:45,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339233561] [2024-06-28 01:43:45,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:45,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:43:45,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:43:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:43:45,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-28 01:43:45,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 157 flow. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:45,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-28 01:43:45,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,182 INFO L124 PetriNetUnfolderBase]: 318/661 cut-off events. [2024-06-28 01:43:46,182 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-28 01:43:46,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 661 events. 318/661 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3543 event pairs, 99 based on Foata normal form. 4/642 useless extension candidates. Maximal degree in co-relation 1561. Up to 472 conditions per place. [2024-06-28 01:43:46,185 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 46 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:43:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 331 flow [2024-06-28 01:43:46,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:46,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-06-28 01:43:46,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-28 01:43:46,187 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 157 flow. Second operand 6 states and 138 transitions. [2024-06-28 01:43:46,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 331 flow [2024-06-28 01:43:46,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 68 transitions, 322 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:46,189 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 178 flow [2024-06-28 01:43:46,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-28 01:43:46,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-28 01:43:46,189 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 178 flow [2024-06-28 01:43:46,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:46,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:43:46,190 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 01:43:46,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2103612338, now seen corresponding path program 1 times [2024-06-28 01:43:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996939942] [2024-06-28 01:43:46,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:46,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:46,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:46,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996939942] [2024-06-28 01:43:46,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996939942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:46,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:46,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:46,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767048781] [2024-06-28 01:43:46,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:46,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:46,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:46,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:46,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:46,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:46,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:46,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:46,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,978 INFO L124 PetriNetUnfolderBase]: 377/776 cut-off events. [2024-06-28 01:43:46,978 INFO L125 PetriNetUnfolderBase]: For 762/762 co-relation queries the response was YES. [2024-06-28 01:43:46,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 776 events. 377/776 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4247 event pairs, 127 based on Foata normal form. 1/751 useless extension candidates. Maximal degree in co-relation 1937. Up to 608 conditions per place. [2024-06-28 01:43:46,983 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 9 changer transitions 0/61 dead transitions. [2024-06-28 01:43:46,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 326 flow [2024-06-28 01:43:46,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:46,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:46,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-28 01:43:46,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:43:46,984 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 178 flow. Second operand 6 states and 118 transitions. [2024-06-28 01:43:46,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 326 flow [2024-06-28 01:43:46,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 61 transitions, 306 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:46,987 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 193 flow [2024-06-28 01:43:46,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-28 01:43:46,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2024-06-28 01:43:46,988 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 193 flow [2024-06-28 01:43:46,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:46,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:43:46,989 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 01:43:46,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,989 INFO L85 PathProgramCache]: Analyzing trace with hash -794177869, now seen corresponding path program 1 times [2024-06-28 01:43:46,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589827100] [2024-06-28 01:43:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:47,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:47,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589827100] [2024-06-28 01:43:47,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589827100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:47,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:47,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:47,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90939800] [2024-06-28 01:43:47,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:47,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:47,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:47,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:47,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:47,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:47,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:47,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:47,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:47,746 INFO L124 PetriNetUnfolderBase]: 426/865 cut-off events. [2024-06-28 01:43:47,746 INFO L125 PetriNetUnfolderBase]: For 1086/1086 co-relation queries the response was YES. [2024-06-28 01:43:47,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 865 events. 426/865 cut-off events. For 1086/1086 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4787 event pairs, 137 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 2243. Up to 665 conditions per place. [2024-06-28 01:43:47,750 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 47 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2024-06-28 01:43:47,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 373 flow [2024-06-28 01:43:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2024-06-28 01:43:47,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2024-06-28 01:43:47,751 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 193 flow. Second operand 6 states and 121 transitions. [2024-06-28 01:43:47,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 373 flow [2024-06-28 01:43:47,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 354 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:47,754 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 235 flow [2024-06-28 01:43:47,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-06-28 01:43:47,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2024-06-28 01:43:47,755 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 235 flow [2024-06-28 01:43:47,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:47,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:47,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:43:47,755 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 01:43:47,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:47,756 INFO L85 PathProgramCache]: Analyzing trace with hash -793997449, now seen corresponding path program 2 times [2024-06-28 01:43:47,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:47,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94749194] [2024-06-28 01:43:47,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:47,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:48,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:48,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94749194] [2024-06-28 01:43:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94749194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:48,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:48,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:48,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443025131] [2024-06-28 01:43:48,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:48,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:48,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:48,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:48,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:48,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:48,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 235 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:48,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:48,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:48,470 INFO L124 PetriNetUnfolderBase]: 428/879 cut-off events. [2024-06-28 01:43:48,471 INFO L125 PetriNetUnfolderBase]: For 1543/1543 co-relation queries the response was YES. [2024-06-28 01:43:48,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2481 conditions, 879 events. 428/879 cut-off events. For 1543/1543 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4928 event pairs, 128 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 2457. Up to 638 conditions per place. [2024-06-28 01:43:48,476 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 46 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-28 01:43:48,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 70 transitions, 415 flow [2024-06-28 01:43:48,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:48,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:48,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-06-28 01:43:48,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350877192982456 [2024-06-28 01:43:48,477 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 235 flow. Second operand 6 states and 122 transitions. [2024-06-28 01:43:48,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 70 transitions, 415 flow [2024-06-28 01:43:48,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 396 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:48,480 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 263 flow [2024-06-28 01:43:48,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=263, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-28 01:43:48,480 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2024-06-28 01:43:48,480 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 263 flow [2024-06-28 01:43:48,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:48,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:48,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:43:48,481 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 01:43:48,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:48,482 INFO L85 PathProgramCache]: Analyzing trace with hash -787471949, now seen corresponding path program 1 times [2024-06-28 01:43:48,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:48,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920996950] [2024-06-28 01:43:48,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920996950] [2024-06-28 01:43:48,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920996950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:48,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:48,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:48,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165844074] [2024-06-28 01:43:48,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:48,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:48,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:49,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:49,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 263 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:49,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:49,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:49,237 INFO L124 PetriNetUnfolderBase]: 412/879 cut-off events. [2024-06-28 01:43:49,246 INFO L125 PetriNetUnfolderBase]: For 1647/1647 co-relation queries the response was YES. [2024-06-28 01:43:49,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 879 events. 412/879 cut-off events. For 1647/1647 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4977 event pairs, 122 based on Foata normal form. 1/845 useless extension candidates. Maximal degree in co-relation 2511. Up to 652 conditions per place. [2024-06-28 01:43:49,251 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 54 selfloop transitions, 11 changer transitions 0/75 dead transitions. [2024-06-28 01:43:49,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 75 transitions, 459 flow [2024-06-28 01:43:49,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:49,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-28 01:43:49,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-06-28 01:43:49,253 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 263 flow. Second operand 7 states and 137 transitions. [2024-06-28 01:43:49,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 75 transitions, 459 flow [2024-06-28 01:43:49,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 428 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:49,256 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 273 flow [2024-06-28 01:43:49,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-28 01:43:49,256 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2024-06-28 01:43:49,256 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 273 flow [2024-06-28 01:43:49,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:49,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:49,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:43:49,257 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 01:43:49,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:49,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1150290895, now seen corresponding path program 1 times [2024-06-28 01:43:49,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:49,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729324430] [2024-06-28 01:43:49,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:49,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729324430] [2024-06-28 01:43:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729324430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:49,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819246219] [2024-06-28 01:43:49,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:49,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:49,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:49,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:49,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:49,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:49,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:49,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:50,145 INFO L124 PetriNetUnfolderBase]: 493/971 cut-off events. [2024-06-28 01:43:50,146 INFO L125 PetriNetUnfolderBase]: For 2193/2193 co-relation queries the response was YES. [2024-06-28 01:43:50,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 971 events. 493/971 cut-off events. For 2193/2193 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5410 event pairs, 151 based on Foata normal form. 2/942 useless extension candidates. Maximal degree in co-relation 2928. Up to 751 conditions per place. [2024-06-28 01:43:50,151 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 59 selfloop transitions, 12 changer transitions 0/80 dead transitions. [2024-06-28 01:43:50,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 80 transitions, 491 flow [2024-06-28 01:43:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:50,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:50,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 135 transitions. [2024-06-28 01:43:50,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5075187969924813 [2024-06-28 01:43:50,153 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 273 flow. Second operand 7 states and 135 transitions. [2024-06-28 01:43:50,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 80 transitions, 491 flow [2024-06-28 01:43:50,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 80 transitions, 466 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:50,155 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 293 flow [2024-06-28 01:43:50,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-28 01:43:50,156 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2024-06-28 01:43:50,156 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 293 flow [2024-06-28 01:43:50,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:50,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:50,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:43:50,157 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 01:43:50,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:50,157 INFO L85 PathProgramCache]: Analyzing trace with hash -683843911, now seen corresponding path program 2 times [2024-06-28 01:43:50,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:50,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078984337] [2024-06-28 01:43:50,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:50,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,670 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 01:43:50,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078984337] [2024-06-28 01:43:50,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078984337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:50,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795083479] [2024-06-28 01:43:50,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:50,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:50,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:50,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 293 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:50,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:51,011 INFO L124 PetriNetUnfolderBase]: 531/1055 cut-off events. [2024-06-28 01:43:51,011 INFO L125 PetriNetUnfolderBase]: For 2789/2789 co-relation queries the response was YES. [2024-06-28 01:43:51,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 1055 events. 531/1055 cut-off events. For 2789/2789 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5974 event pairs, 145 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 3291. Up to 715 conditions per place. [2024-06-28 01:43:51,018 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 56 selfloop transitions, 20 changer transitions 0/85 dead transitions. [2024-06-28 01:43:51,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 85 transitions, 565 flow [2024-06-28 01:43:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:51,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 01:43:51,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-28 01:43:51,020 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 293 flow. Second operand 7 states and 138 transitions. [2024-06-28 01:43:51,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 85 transitions, 565 flow [2024-06-28 01:43:51,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 85 transitions, 536 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:51,024 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 345 flow [2024-06-28 01:43:51,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=345, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2024-06-28 01:43:51,025 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2024-06-28 01:43:51,025 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 345 flow [2024-06-28 01:43:51,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:51,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:51,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:43:51,026 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 01:43:51,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:51,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1155883915, now seen corresponding path program 3 times [2024-06-28 01:43:51,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:51,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787446881] [2024-06-28 01:43:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:51,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:51,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:51,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787446881] [2024-06-28 01:43:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787446881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:51,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119044835] [2024-06-28 01:43:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:51,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:51,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:51,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:51,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:51,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 345 flow. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:51,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:51,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:51,806 INFO L124 PetriNetUnfolderBase]: 527/1061 cut-off events. [2024-06-28 01:43:51,806 INFO L125 PetriNetUnfolderBase]: For 3344/3344 co-relation queries the response was YES. [2024-06-28 01:43:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3460 conditions, 1061 events. 527/1061 cut-off events. For 3344/3344 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6055 event pairs, 153 based on Foata normal form. 2/1023 useless extension candidates. Maximal degree in co-relation 3432. Up to 712 conditions per place. [2024-06-28 01:43:51,812 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 56 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2024-06-28 01:43:51,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 84 transitions, 563 flow [2024-06-28 01:43:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:51,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:51,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-06-28 01:43:51,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.518796992481203 [2024-06-28 01:43:51,814 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 345 flow. Second operand 7 states and 138 transitions. [2024-06-28 01:43:51,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 84 transitions, 563 flow [2024-06-28 01:43:51,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 84 transitions, 530 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:51,819 INFO L231 Difference]: Finished difference. Result has 72 places, 60 transitions, 355 flow [2024-06-28 01:43:51,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=355, PETRI_PLACES=72, PETRI_TRANSITIONS=60} [2024-06-28 01:43:51,821 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2024-06-28 01:43:51,821 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 60 transitions, 355 flow [2024-06-28 01:43:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:51,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:51,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:43:51,822 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 01:43:51,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:51,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1967644910, now seen corresponding path program 1 times [2024-06-28 01:43:51,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:51,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802392598] [2024-06-28 01:43:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:51,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:52,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802392598] [2024-06-28 01:43:52,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802392598] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:52,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:52,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:52,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487644791] [2024-06-28 01:43:52,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:52,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:52,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:52,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:52,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:52,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:52,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 355 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:52,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:52,830 INFO L124 PetriNetUnfolderBase]: 507/1029 cut-off events. [2024-06-28 01:43:52,831 INFO L125 PetriNetUnfolderBase]: For 3628/3632 co-relation queries the response was YES. [2024-06-28 01:43:52,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3485 conditions, 1029 events. 507/1029 cut-off events. For 3628/3632 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6031 event pairs, 161 based on Foata normal form. 3/996 useless extension candidates. Maximal degree in co-relation 3455. Up to 779 conditions per place. [2024-06-28 01:43:52,837 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 61 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-28 01:43:52,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 93 transitions, 639 flow [2024-06-28 01:43:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 01:43:52,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-28 01:43:52,838 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 355 flow. Second operand 8 states and 158 transitions. [2024-06-28 01:43:52,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 93 transitions, 639 flow [2024-06-28 01:43:52,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 93 transitions, 583 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:52,846 INFO L231 Difference]: Finished difference. Result has 76 places, 70 transitions, 432 flow [2024-06-28 01:43:52,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=432, PETRI_PLACES=76, PETRI_TRANSITIONS=70} [2024-06-28 01:43:52,847 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2024-06-28 01:43:52,847 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 70 transitions, 432 flow [2024-06-28 01:43:52,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:52,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:52,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:43:52,848 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 01:43:52,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:52,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1294481170, now seen corresponding path program 2 times [2024-06-28 01:43:52,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:52,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017742106] [2024-06-28 01:43:52,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:52,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:53,597 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 01:43:53,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:53,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017742106] [2024-06-28 01:43:53,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017742106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:53,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:53,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:53,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295223731] [2024-06-28 01:43:53,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:53,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:53,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:53,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:43:53,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 70 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:53,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:43:53,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:53,990 INFO L124 PetriNetUnfolderBase]: 504/1011 cut-off events. [2024-06-28 01:43:53,990 INFO L125 PetriNetUnfolderBase]: For 4388/4392 co-relation queries the response was YES. [2024-06-28 01:43:53,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1011 events. 504/1011 cut-off events. For 4388/4392 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5886 event pairs, 153 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 3599. Up to 751 conditions per place. [2024-06-28 01:43:53,996 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 62 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-28 01:43:53,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 97 transitions, 712 flow [2024-06-28 01:43:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 141 transitions. [2024-06-28 01:43:53,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5300751879699248 [2024-06-28 01:43:53,997 INFO L175 Difference]: Start difference. First operand has 76 places, 70 transitions, 432 flow. Second operand 7 states and 141 transitions. [2024-06-28 01:43:53,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 97 transitions, 712 flow [2024-06-28 01:43:54,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 97 transitions, 667 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:54,006 INFO L231 Difference]: Finished difference. Result has 80 places, 75 transitions, 501 flow [2024-06-28 01:43:54,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=80, PETRI_TRANSITIONS=75} [2024-06-28 01:43:54,006 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 38 predicate places. [2024-06-28 01:43:54,006 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 75 transitions, 501 flow [2024-06-28 01:43:54,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:54,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:54,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:43:54,007 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 01:43:54,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:54,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1299280466, now seen corresponding path program 1 times [2024-06-28 01:43:54,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:54,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532011644] [2024-06-28 01:43:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:54,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:54,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532011644] [2024-06-28 01:43:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532011644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:54,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746150658] [2024-06-28 01:43:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:54,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:54,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 75 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:54,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:54,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:55,106 INFO L124 PetriNetUnfolderBase]: 627/1190 cut-off events. [2024-06-28 01:43:55,107 INFO L125 PetriNetUnfolderBase]: For 5702/5702 co-relation queries the response was YES. [2024-06-28 01:43:55,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4453 conditions, 1190 events. 627/1190 cut-off events. For 5702/5702 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6876 event pairs, 201 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 4418. Up to 924 conditions per place. [2024-06-28 01:43:55,116 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 81 selfloop transitions, 23 changer transitions 0/113 dead transitions. [2024-06-28 01:43:55,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 113 transitions, 903 flow [2024-06-28 01:43:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:55,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:55,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 166 transitions. [2024-06-28 01:43:55,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853801169590643 [2024-06-28 01:43:55,118 INFO L175 Difference]: Start difference. First operand has 80 places, 75 transitions, 501 flow. Second operand 9 states and 166 transitions. [2024-06-28 01:43:55,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 113 transitions, 903 flow [2024-06-28 01:43:55,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 113 transitions, 827 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:55,125 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 617 flow [2024-06-28 01:43:55,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=617, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2024-06-28 01:43:55,126 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 47 predicate places. [2024-06-28 01:43:55,126 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 617 flow [2024-06-28 01:43:55,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:55,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:55,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:43:55,127 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 01:43:55,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:55,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1962845614, now seen corresponding path program 2 times [2024-06-28 01:43:55,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:55,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906554223] [2024-06-28 01:43:55,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:55,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:55,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:55,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906554223] [2024-06-28 01:43:55,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906554223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:55,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:55,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:55,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421345638] [2024-06-28 01:43:55,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:55,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:55,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:55,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:55,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:55,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:55,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 617 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:55,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:55,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:56,102 INFO L124 PetriNetUnfolderBase]: 691/1324 cut-off events. [2024-06-28 01:43:56,102 INFO L125 PetriNetUnfolderBase]: For 5672/5672 co-relation queries the response was YES. [2024-06-28 01:43:56,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4987 conditions, 1324 events. 691/1324 cut-off events. For 5672/5672 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7908 event pairs, 234 based on Foata normal form. 2/1289 useless extension candidates. Maximal degree in co-relation 4947. Up to 978 conditions per place. [2024-06-28 01:43:56,116 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 87 selfloop transitions, 30 changer transitions 0/126 dead transitions. [2024-06-28 01:43:56,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 126 transitions, 1030 flow [2024-06-28 01:43:56,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:56,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:56,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:43:56,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-28 01:43:56,118 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 617 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:43:56,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 126 transitions, 1030 flow [2024-06-28 01:43:56,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 126 transitions, 985 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:56,126 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 745 flow [2024-06-28 01:43:56,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=745, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-06-28 01:43:56,127 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 56 predicate places. [2024-06-28 01:43:56,127 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 745 flow [2024-06-28 01:43:56,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:56,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:43:56,128 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 01:43:56,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:56,128 INFO L85 PathProgramCache]: Analyzing trace with hash 275685628, now seen corresponding path program 3 times [2024-06-28 01:43:56,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:56,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957295599] [2024-06-28 01:43:56,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:56,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:56,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:56,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957295599] [2024-06-28 01:43:56,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957295599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:56,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:56,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760653092] [2024-06-28 01:43:56,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:56,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:56,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:56,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:56,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:56,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 745 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:56,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:57,085 INFO L124 PetriNetUnfolderBase]: 729/1434 cut-off events. [2024-06-28 01:43:57,085 INFO L125 PetriNetUnfolderBase]: For 7371/7371 co-relation queries the response was YES. [2024-06-28 01:43:57,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1434 events. 729/1434 cut-off events. For 7371/7371 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8774 event pairs, 168 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 5543. Up to 793 conditions per place. [2024-06-28 01:43:57,094 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 76 selfloop transitions, 45 changer transitions 0/130 dead transitions. [2024-06-28 01:43:57,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 130 transitions, 1171 flow [2024-06-28 01:43:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:57,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:57,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 01:43:57,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-28 01:43:57,097 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 745 flow. Second operand 8 states and 158 transitions. [2024-06-28 01:43:57,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 130 transitions, 1171 flow [2024-06-28 01:43:57,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 130 transitions, 1099 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:57,111 INFO L231 Difference]: Finished difference. Result has 100 places, 100 transitions, 841 flow [2024-06-28 01:43:57,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=841, PETRI_PLACES=100, PETRI_TRANSITIONS=100} [2024-06-28 01:43:57,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2024-06-28 01:43:57,112 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 100 transitions, 841 flow [2024-06-28 01:43:57,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:57,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:43:57,112 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 01:43:57,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -846601356, now seen corresponding path program 4 times [2024-06-28 01:43:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:57,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152142945] [2024-06-28 01:43:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:57,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:57,657 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 01:43:57,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152142945] [2024-06-28 01:43:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152142945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:57,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:57,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:57,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396494169] [2024-06-28 01:43:57,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:57,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:57,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:57,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:57,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:57,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:57,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 100 transitions, 841 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:57,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:57,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,021 INFO L124 PetriNetUnfolderBase]: 751/1491 cut-off events. [2024-06-28 01:43:58,021 INFO L125 PetriNetUnfolderBase]: For 8633/8633 co-relation queries the response was YES. [2024-06-28 01:43:58,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6135 conditions, 1491 events. 751/1491 cut-off events. For 8633/8633 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9263 event pairs, 175 based on Foata normal form. 2/1433 useless extension candidates. Maximal degree in co-relation 6089. Up to 811 conditions per place. [2024-06-28 01:43:58,030 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 80 selfloop transitions, 43 changer transitions 0/132 dead transitions. [2024-06-28 01:43:58,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 1251 flow [2024-06-28 01:43:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 159 transitions. [2024-06-28 01:43:58,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5230263157894737 [2024-06-28 01:43:58,032 INFO L175 Difference]: Start difference. First operand has 100 places, 100 transitions, 841 flow. Second operand 8 states and 159 transitions. [2024-06-28 01:43:58,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 1251 flow [2024-06-28 01:43:58,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 1183 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:58,045 INFO L231 Difference]: Finished difference. Result has 104 places, 102 transitions, 894 flow [2024-06-28 01:43:58,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=894, PETRI_PLACES=104, PETRI_TRANSITIONS=102} [2024-06-28 01:43:58,045 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 62 predicate places. [2024-06-28 01:43:58,045 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 102 transitions, 894 flow [2024-06-28 01:43:58,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:58,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:58,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:43:58,046 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 01:43:58,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:58,046 INFO L85 PathProgramCache]: Analyzing trace with hash -855798126, now seen corresponding path program 5 times [2024-06-28 01:43:58,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:58,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542952102] [2024-06-28 01:43:58,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:58,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:58,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:58,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:58,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542952102] [2024-06-28 01:43:58,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542952102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:58,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:58,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:58,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327001783] [2024-06-28 01:43:58,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:58,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:58,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:58,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:58,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:58,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:58,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 102 transitions, 894 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:58,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:58,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,963 INFO L124 PetriNetUnfolderBase]: 747/1479 cut-off events. [2024-06-28 01:43:58,963 INFO L125 PetriNetUnfolderBase]: For 8843/8843 co-relation queries the response was YES. [2024-06-28 01:43:58,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6231 conditions, 1479 events. 747/1479 cut-off events. For 8843/8843 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9121 event pairs, 228 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 6183. Up to 808 conditions per place. [2024-06-28 01:43:58,972 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 80 selfloop transitions, 43 changer transitions 0/132 dead transitions. [2024-06-28 01:43:58,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 132 transitions, 1253 flow [2024-06-28 01:43:58,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-28 01:43:58,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029239766081871 [2024-06-28 01:43:58,975 INFO L175 Difference]: Start difference. First operand has 104 places, 102 transitions, 894 flow. Second operand 9 states and 172 transitions. [2024-06-28 01:43:58,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 132 transitions, 1253 flow [2024-06-28 01:43:58,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 132 transitions, 1160 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:58,993 INFO L231 Difference]: Finished difference. Result has 108 places, 103 transitions, 903 flow [2024-06-28 01:43:58,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=903, PETRI_PLACES=108, PETRI_TRANSITIONS=103} [2024-06-28 01:43:58,993 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 66 predicate places. [2024-06-28 01:43:58,994 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 103 transitions, 903 flow [2024-06-28 01:43:58,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:58,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:58,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:43:58,994 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 01:43:58,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:58,995 INFO L85 PathProgramCache]: Analyzing trace with hash -846263022, now seen corresponding path program 1 times [2024-06-28 01:43:58,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:58,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196264365] [2024-06-28 01:43:58,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:58,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:59,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196264365] [2024-06-28 01:43:59,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196264365] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:59,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:59,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:59,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183254890] [2024-06-28 01:43:59,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:59,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:59,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:59,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:59,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:59,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:43:59,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 103 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:59,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:59,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:43:59,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:00,162 INFO L124 PetriNetUnfolderBase]: 745/1453 cut-off events. [2024-06-28 01:44:00,162 INFO L125 PetriNetUnfolderBase]: For 8828/8828 co-relation queries the response was YES. [2024-06-28 01:44:00,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6163 conditions, 1453 events. 745/1453 cut-off events. For 8828/8828 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8928 event pairs, 340 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 6114. Up to 1135 conditions per place. [2024-06-28 01:44:00,171 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 110 selfloop transitions, 25 changer transitions 0/144 dead transitions. [2024-06-28 01:44:00,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 144 transitions, 1361 flow [2024-06-28 01:44:00,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:00,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:00,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:44:00,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:44:00,172 INFO L175 Difference]: Start difference. First operand has 108 places, 103 transitions, 903 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:44:00,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 144 transitions, 1361 flow [2024-06-28 01:44:00,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 144 transitions, 1290 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:00,185 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 1006 flow [2024-06-28 01:44:00,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1006, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-06-28 01:44:00,186 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-28 01:44:00,186 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 1006 flow [2024-06-28 01:44:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:44:00,187 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 01:44:00,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1765453966, now seen corresponding path program 1 times [2024-06-28 01:44:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560124131] [2024-06-28 01:44:00,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:00,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:00,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560124131] [2024-06-28 01:44:00,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560124131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:00,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:00,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:00,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186292285] [2024-06-28 01:44:00,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:00,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:00,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:00,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:00,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:01,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:01,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 1006 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:01,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:01,396 INFO L124 PetriNetUnfolderBase]: 756/1471 cut-off events. [2024-06-28 01:44:01,396 INFO L125 PetriNetUnfolderBase]: For 9594/9594 co-relation queries the response was YES. [2024-06-28 01:44:01,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6368 conditions, 1471 events. 756/1471 cut-off events. For 9594/9594 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9100 event pairs, 280 based on Foata normal form. 1/1425 useless extension candidates. Maximal degree in co-relation 6314. Up to 1172 conditions per place. [2024-06-28 01:44:01,408 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 108 selfloop transitions, 25 changer transitions 0/142 dead transitions. [2024-06-28 01:44:01,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 142 transitions, 1386 flow [2024-06-28 01:44:01,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:01,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:01,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:44:01,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:44:01,410 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 1006 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:44:01,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 142 transitions, 1386 flow [2024-06-28 01:44:01,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 142 transitions, 1310 flow, removed 25 selfloop flow, removed 3 redundant places. [2024-06-28 01:44:01,430 INFO L231 Difference]: Finished difference. Result has 121 places, 115 transitions, 1019 flow [2024-06-28 01:44:01,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1019, PETRI_PLACES=121, PETRI_TRANSITIONS=115} [2024-06-28 01:44:01,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2024-06-28 01:44:01,431 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 115 transitions, 1019 flow [2024-06-28 01:44:01,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:01,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:01,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:44:01,432 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 01:44:01,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:01,432 INFO L85 PathProgramCache]: Analyzing trace with hash 965297262, now seen corresponding path program 2 times [2024-06-28 01:44:01,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:01,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656621126] [2024-06-28 01:44:01,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:01,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:01,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:02,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:02,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:02,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656621126] [2024-06-28 01:44:02,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656621126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:02,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:02,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:02,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887271504] [2024-06-28 01:44:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:02,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:02,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:02,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:02,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:02,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 115 transitions, 1019 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:02,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:02,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:02,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:02,636 INFO L124 PetriNetUnfolderBase]: 808/1565 cut-off events. [2024-06-28 01:44:02,636 INFO L125 PetriNetUnfolderBase]: For 10874/10874 co-relation queries the response was YES. [2024-06-28 01:44:02,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6846 conditions, 1565 events. 808/1565 cut-off events. For 10874/10874 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9793 event pairs, 238 based on Foata normal form. 1/1518 useless extension candidates. Maximal degree in co-relation 6791. Up to 1218 conditions per place. [2024-06-28 01:44:02,649 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 113 selfloop transitions, 40 changer transitions 0/162 dead transitions. [2024-06-28 01:44:02,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 162 transitions, 1596 flow [2024-06-28 01:44:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:02,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:02,651 INFO L175 Difference]: Start difference. First operand has 121 places, 115 transitions, 1019 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:02,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 162 transitions, 1596 flow [2024-06-28 01:44:02,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 162 transitions, 1486 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:02,670 INFO L231 Difference]: Finished difference. Result has 127 places, 133 transitions, 1228 flow [2024-06-28 01:44:02,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1228, PETRI_PLACES=127, PETRI_TRANSITIONS=133} [2024-06-28 01:44:02,671 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-28 01:44:02,671 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 133 transitions, 1228 flow [2024-06-28 01:44:02,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:02,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:02,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:02,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:44:02,671 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 01:44:02,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 49824594, now seen corresponding path program 1 times [2024-06-28 01:44:02,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:02,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583214074] [2024-06-28 01:44:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:02,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:03,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:03,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583214074] [2024-06-28 01:44:03,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583214074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:03,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:03,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:03,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246493670] [2024-06-28 01:44:03,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:03,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:03,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:03,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:03,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:03,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:03,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 133 transitions, 1228 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:03,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:03,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:03,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:03,729 INFO L124 PetriNetUnfolderBase]: 830/1572 cut-off events. [2024-06-28 01:44:03,729 INFO L125 PetriNetUnfolderBase]: For 12174/12174 co-relation queries the response was YES. [2024-06-28 01:44:03,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7173 conditions, 1572 events. 830/1572 cut-off events. For 12174/12174 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9663 event pairs, 249 based on Foata normal form. 2/1532 useless extension candidates. Maximal degree in co-relation 7114. Up to 1158 conditions per place. [2024-06-28 01:44:03,739 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 131 selfloop transitions, 32 changer transitions 0/172 dead transitions. [2024-06-28 01:44:03,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 172 transitions, 1720 flow [2024-06-28 01:44:03,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:44:03,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-28 01:44:03,740 INFO L175 Difference]: Start difference. First operand has 127 places, 133 transitions, 1228 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:44:03,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 172 transitions, 1720 flow [2024-06-28 01:44:03,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 172 transitions, 1626 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:03,762 INFO L231 Difference]: Finished difference. Result has 132 places, 135 transitions, 1238 flow [2024-06-28 01:44:03,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1238, PETRI_PLACES=132, PETRI_TRANSITIONS=135} [2024-06-28 01:44:03,762 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 01:44:03,763 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 135 transitions, 1238 flow [2024-06-28 01:44:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:03,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:03,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:44:03,763 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 01:44:03,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1474211664, now seen corresponding path program 3 times [2024-06-28 01:44:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:03,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957692340] [2024-06-28 01:44:03,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:03,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957692340] [2024-06-28 01:44:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957692340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:04,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649519495] [2024-06-28 01:44:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:04,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:04,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 135 transitions, 1238 flow. Second operand has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:04,958 INFO L124 PetriNetUnfolderBase]: 831/1606 cut-off events. [2024-06-28 01:44:04,958 INFO L125 PetriNetUnfolderBase]: For 12640/12640 co-relation queries the response was YES. [2024-06-28 01:44:04,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7286 conditions, 1606 events. 831/1606 cut-off events. For 12640/12640 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10088 event pairs, 252 based on Foata normal form. 1/1557 useless extension candidates. Maximal degree in co-relation 7226. Up to 1219 conditions per place. [2024-06-28 01:44:04,972 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 109 selfloop transitions, 44 changer transitions 0/162 dead transitions. [2024-06-28 01:44:04,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 162 transitions, 1672 flow [2024-06-28 01:44:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-28 01:44:04,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032894736842105 [2024-06-28 01:44:04,973 INFO L175 Difference]: Start difference. First operand has 132 places, 135 transitions, 1238 flow. Second operand 8 states and 153 transitions. [2024-06-28 01:44:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 162 transitions, 1672 flow [2024-06-28 01:44:04,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 162 transitions, 1586 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:04,998 INFO L231 Difference]: Finished difference. Result has 132 places, 137 transitions, 1298 flow [2024-06-28 01:44:04,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1298, PETRI_PLACES=132, PETRI_TRANSITIONS=137} [2024-06-28 01:44:04,999 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 90 predicate places. [2024-06-28 01:44:04,999 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 137 transitions, 1298 flow [2024-06-28 01:44:04,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.333333333333334) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:04,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:04,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:44:04,999 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 01:44:05,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:05,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1622989902, now seen corresponding path program 2 times [2024-06-28 01:44:05,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:05,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582310130] [2024-06-28 01:44:05,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:05,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:05,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582310130] [2024-06-28 01:44:05,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582310130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:05,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:05,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:05,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696369532] [2024-06-28 01:44:05,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:05,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:05,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:05,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:05,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:05,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 137 transitions, 1298 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:05,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:05,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:05,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:06,074 INFO L124 PetriNetUnfolderBase]: 853/1597 cut-off events. [2024-06-28 01:44:06,074 INFO L125 PetriNetUnfolderBase]: For 13722/13722 co-relation queries the response was YES. [2024-06-28 01:44:06,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7513 conditions, 1597 events. 853/1597 cut-off events. For 13722/13722 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9831 event pairs, 206 based on Foata normal form. 2/1560 useless extension candidates. Maximal degree in co-relation 7452. Up to 1090 conditions per place. [2024-06-28 01:44:06,087 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 126 selfloop transitions, 38 changer transitions 0/173 dead transitions. [2024-06-28 01:44:06,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 173 transitions, 1790 flow [2024-06-28 01:44:06,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:06,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 173 transitions. [2024-06-28 01:44:06,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5058479532163743 [2024-06-28 01:44:06,089 INFO L175 Difference]: Start difference. First operand has 132 places, 137 transitions, 1298 flow. Second operand 9 states and 173 transitions. [2024-06-28 01:44:06,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 173 transitions, 1790 flow [2024-06-28 01:44:06,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 173 transitions, 1670 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:06,118 INFO L231 Difference]: Finished difference. Result has 135 places, 139 transitions, 1303 flow [2024-06-28 01:44:06,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1303, PETRI_PLACES=135, PETRI_TRANSITIONS=139} [2024-06-28 01:44:06,119 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 93 predicate places. [2024-06-28 01:44:06,119 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 139 transitions, 1303 flow [2024-06-28 01:44:06,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:06,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:06,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:44:06,119 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 01:44:06,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1024251640, now seen corresponding path program 3 times [2024-06-28 01:44:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:06,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124952620] [2024-06-28 01:44:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:06,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:06,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:06,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:06,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124952620] [2024-06-28 01:44:06,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124952620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:06,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:06,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:06,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859564769] [2024-06-28 01:44:06,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:06,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:06,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:06,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:06,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:06,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:06,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 139 transitions, 1303 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:06,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:06,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:07,256 INFO L124 PetriNetUnfolderBase]: 891/1748 cut-off events. [2024-06-28 01:44:07,257 INFO L125 PetriNetUnfolderBase]: For 14534/14534 co-relation queries the response was YES. [2024-06-28 01:44:07,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7953 conditions, 1748 events. 891/1748 cut-off events. For 14534/14534 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11105 event pairs, 251 based on Foata normal form. 2/1689 useless extension candidates. Maximal degree in co-relation 7891. Up to 880 conditions per place. [2024-06-28 01:44:07,269 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 125 selfloop transitions, 45 changer transitions 0/179 dead transitions. [2024-06-28 01:44:07,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 179 transitions, 1895 flow [2024-06-28 01:44:07,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:07,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:07,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2024-06-28 01:44:07,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292397660818714 [2024-06-28 01:44:07,270 INFO L175 Difference]: Start difference. First operand has 135 places, 139 transitions, 1303 flow. Second operand 9 states and 181 transitions. [2024-06-28 01:44:07,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 179 transitions, 1895 flow [2024-06-28 01:44:07,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 179 transitions, 1786 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:07,295 INFO L231 Difference]: Finished difference. Result has 137 places, 143 transitions, 1367 flow [2024-06-28 01:44:07,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1367, PETRI_PLACES=137, PETRI_TRANSITIONS=143} [2024-06-28 01:44:07,296 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2024-06-28 01:44:07,296 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 143 transitions, 1367 flow [2024-06-28 01:44:07,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:07,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:07,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:44:07,297 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 01:44:07,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -464717810, now seen corresponding path program 4 times [2024-06-28 01:44:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:07,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364254261] [2024-06-28 01:44:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:07,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364254261] [2024-06-28 01:44:07,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364254261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739365056] [2024-06-28 01:44:07,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:07,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:07,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:08,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:08,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 143 transitions, 1367 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:08,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:08,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:08,393 INFO L124 PetriNetUnfolderBase]: 939/1797 cut-off events. [2024-06-28 01:44:08,394 INFO L125 PetriNetUnfolderBase]: For 15275/15275 co-relation queries the response was YES. [2024-06-28 01:44:08,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8377 conditions, 1797 events. 939/1797 cut-off events. For 15275/15275 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11296 event pairs, 163 based on Foata normal form. 2/1742 useless extension candidates. Maximal degree in co-relation 8314. Up to 919 conditions per place. [2024-06-28 01:44:08,406 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 119 selfloop transitions, 56 changer transitions 0/184 dead transitions. [2024-06-28 01:44:08,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 184 transitions, 2013 flow [2024-06-28 01:44:08,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-28 01:44:08,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5263157894736842 [2024-06-28 01:44:08,407 INFO L175 Difference]: Start difference. First operand has 137 places, 143 transitions, 1367 flow. Second operand 9 states and 180 transitions. [2024-06-28 01:44:08,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 184 transitions, 2013 flow [2024-06-28 01:44:08,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 184 transitions, 1936 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:08,440 INFO L231 Difference]: Finished difference. Result has 141 places, 147 transitions, 1479 flow [2024-06-28 01:44:08,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1479, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2024-06-28 01:44:08,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2024-06-28 01:44:08,441 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 1479 flow [2024-06-28 01:44:08,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:08,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:08,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:44:08,441 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 01:44:08,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:08,441 INFO L85 PathProgramCache]: Analyzing trace with hash -464361620, now seen corresponding path program 5 times [2024-06-28 01:44:08,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:08,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940009928] [2024-06-28 01:44:08,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:08,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:09,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:09,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:09,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940009928] [2024-06-28 01:44:09,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940009928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:09,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:09,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:09,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309255391] [2024-06-28 01:44:09,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:09,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:09,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:09,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:09,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:09,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:09,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 1479 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:09,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:09,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:09,587 INFO L124 PetriNetUnfolderBase]: 935/1840 cut-off events. [2024-06-28 01:44:09,587 INFO L125 PetriNetUnfolderBase]: For 15949/15949 co-relation queries the response was YES. [2024-06-28 01:44:09,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8588 conditions, 1840 events. 935/1840 cut-off events. For 15949/15949 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 12035 event pairs, 397 based on Foata normal form. 2/1774 useless extension candidates. Maximal degree in co-relation 8523. Up to 1435 conditions per place. [2024-06-28 01:44:09,601 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 153 selfloop transitions, 16 changer transitions 0/178 dead transitions. [2024-06-28 01:44:09,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 178 transitions, 1937 flow [2024-06-28 01:44:09,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:44:09,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:44:09,603 INFO L175 Difference]: Start difference. First operand has 141 places, 147 transitions, 1479 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:44:09,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 178 transitions, 1937 flow [2024-06-28 01:44:09,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 178 transitions, 1804 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:09,640 INFO L231 Difference]: Finished difference. Result has 145 places, 147 transitions, 1383 flow [2024-06-28 01:44:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1383, PETRI_PLACES=145, PETRI_TRANSITIONS=147} [2024-06-28 01:44:09,641 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-28 01:44:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 147 transitions, 1383 flow [2024-06-28 01:44:09,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:09,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:09,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:44:09,642 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 01:44:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1309351510, now seen corresponding path program 6 times [2024-06-28 01:44:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317202967] [2024-06-28 01:44:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:10,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:10,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:10,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317202967] [2024-06-28 01:44:10,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317202967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:10,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:10,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:10,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171956655] [2024-06-28 01:44:10,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:10,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:10,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:10,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:10,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:10,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:10,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 147 transitions, 1383 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:10,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:10,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:10,656 INFO L124 PetriNetUnfolderBase]: 931/1829 cut-off events. [2024-06-28 01:44:10,656 INFO L125 PetriNetUnfolderBase]: For 14287/14287 co-relation queries the response was YES. [2024-06-28 01:44:10,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8166 conditions, 1829 events. 931/1829 cut-off events. For 14287/14287 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 11810 event pairs, 182 based on Foata normal form. 2/1760 useless extension candidates. Maximal degree in co-relation 8100. Up to 913 conditions per place. [2024-06-28 01:44:10,669 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 121 selfloop transitions, 52 changer transitions 0/182 dead transitions. [2024-06-28 01:44:10,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 182 transitions, 1865 flow [2024-06-28 01:44:10,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:10,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 179 transitions. [2024-06-28 01:44:10,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233918128654971 [2024-06-28 01:44:10,671 INFO L175 Difference]: Start difference. First operand has 145 places, 147 transitions, 1383 flow. Second operand 9 states and 179 transitions. [2024-06-28 01:44:10,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 182 transitions, 1865 flow [2024-06-28 01:44:10,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 182 transitions, 1750 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:10,705 INFO L231 Difference]: Finished difference. Result has 144 places, 147 transitions, 1377 flow [2024-06-28 01:44:10,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1377, PETRI_PLACES=144, PETRI_TRANSITIONS=147} [2024-06-28 01:44:10,706 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 102 predicate places. [2024-06-28 01:44:10,706 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 147 transitions, 1377 flow [2024-06-28 01:44:10,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:10,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:10,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:44:10,706 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 01:44:10,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -464348724, now seen corresponding path program 1 times [2024-06-28 01:44:10,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:10,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742267188] [2024-06-28 01:44:10,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:11,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:11,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742267188] [2024-06-28 01:44:11,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742267188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:11,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:11,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:11,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861291875] [2024-06-28 01:44:11,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:11,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:11,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:11,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:11,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:11,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:11,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 147 transitions, 1377 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:11,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:11,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,105 INFO L124 PetriNetUnfolderBase]: 935/1847 cut-off events. [2024-06-28 01:44:12,106 INFO L125 PetriNetUnfolderBase]: For 14065/14065 co-relation queries the response was YES. [2024-06-28 01:44:12,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8239 conditions, 1847 events. 935/1847 cut-off events. For 14065/14065 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12099 event pairs, 397 based on Foata normal form. 2/1780 useless extension candidates. Maximal degree in co-relation 8172. Up to 1426 conditions per place. [2024-06-28 01:44:12,119 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 160 selfloop transitions, 17 changer transitions 0/186 dead transitions. [2024-06-28 01:44:12,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 186 transitions, 1891 flow [2024-06-28 01:44:12,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:12,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:12,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:12,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:12,120 INFO L175 Difference]: Start difference. First operand has 144 places, 147 transitions, 1377 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:12,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 186 transitions, 1891 flow [2024-06-28 01:44:12,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 186 transitions, 1751 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:12,149 INFO L231 Difference]: Finished difference. Result has 146 places, 150 transitions, 1306 flow [2024-06-28 01:44:12,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1306, PETRI_PLACES=146, PETRI_TRANSITIONS=150} [2024-06-28 01:44:12,150 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-28 01:44:12,150 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 150 transitions, 1306 flow [2024-06-28 01:44:12,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:12,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:12,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:44:12,151 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:12,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1396121695, now seen corresponding path program 1 times [2024-06-28 01:44:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94651102] [2024-06-28 01:44:12,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:12,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:12,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:12,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94651102] [2024-06-28 01:44:12,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94651102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:12,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:12,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:44:12,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295540681] [2024-06-28 01:44:12,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:12,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:44:12,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:12,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:44:12,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:44:12,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-28 01:44:12,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 150 transitions, 1306 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:12,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-28 01:44:12,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,534 INFO L124 PetriNetUnfolderBase]: 839/1681 cut-off events. [2024-06-28 01:44:12,534 INFO L125 PetriNetUnfolderBase]: For 9617/9769 co-relation queries the response was YES. [2024-06-28 01:44:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 1681 events. 839/1681 cut-off events. For 9617/9769 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11113 event pairs, 118 based on Foata normal form. 82/1677 useless extension candidates. Maximal degree in co-relation 6861. Up to 533 conditions per place. [2024-06-28 01:44:12,544 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 85 selfloop transitions, 16 changer transitions 50/236 dead transitions. [2024-06-28 01:44:12,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 236 transitions, 2170 flow [2024-06-28 01:44:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:12,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 186 transitions. [2024-06-28 01:44:12,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2024-06-28 01:44:12,545 INFO L175 Difference]: Start difference. First operand has 146 places, 150 transitions, 1306 flow. Second operand 8 states and 186 transitions. [2024-06-28 01:44:12,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 236 transitions, 2170 flow [2024-06-28 01:44:12,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 236 transitions, 2124 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:12,574 INFO L231 Difference]: Finished difference. Result has 152 places, 153 transitions, 1348 flow [2024-06-28 01:44:12,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1348, PETRI_PLACES=152, PETRI_TRANSITIONS=153} [2024-06-28 01:44:12,574 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 110 predicate places. [2024-06-28 01:44:12,574 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 153 transitions, 1348 flow [2024-06-28 01:44:12,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:12,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:12,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:44:12,575 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 01:44:12,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 594583635, now seen corresponding path program 1 times [2024-06-28 01:44:12,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:12,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275379131] [2024-06-28 01:44:12,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:12,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275379131] [2024-06-28 01:44:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275379131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:13,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337803030] [2024-06-28 01:44:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:13,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:13,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:13,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:13,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 153 transitions, 1348 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:13,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:13,723 INFO L124 PetriNetUnfolderBase]: 860/1705 cut-off events. [2024-06-28 01:44:13,723 INFO L125 PetriNetUnfolderBase]: For 14653/14680 co-relation queries the response was YES. [2024-06-28 01:44:13,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7972 conditions, 1705 events. 860/1705 cut-off events. For 14653/14680 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 11026 event pairs, 301 based on Foata normal form. 19/1715 useless extension candidates. Maximal degree in co-relation 7898. Up to 1293 conditions per place. [2024-06-28 01:44:13,735 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 127 selfloop transitions, 29 changer transitions 4/182 dead transitions. [2024-06-28 01:44:13,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 182 transitions, 1781 flow [2024-06-28 01:44:13,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:13,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:13,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 01:44:13,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:44:13,737 INFO L175 Difference]: Start difference. First operand has 152 places, 153 transitions, 1348 flow. Second operand 9 states and 177 transitions. [2024-06-28 01:44:13,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 182 transitions, 1781 flow [2024-06-28 01:44:13,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 182 transitions, 1777 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 01:44:13,773 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1411 flow [2024-06-28 01:44:13,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1411, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2024-06-28 01:44:13,774 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 115 predicate places. [2024-06-28 01:44:13,774 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1411 flow [2024-06-28 01:44:13,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:13,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:13,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:44:13,774 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 01:44:13,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1322255955, now seen corresponding path program 2 times [2024-06-28 01:44:13,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:13,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323871941] [2024-06-28 01:44:13,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:13,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323871941] [2024-06-28 01:44:14,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323871941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:14,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049078817] [2024-06-28 01:44:14,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:14,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:14,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:14,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:14,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1411 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:14,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:14,860 INFO L124 PetriNetUnfolderBase]: 816/1601 cut-off events. [2024-06-28 01:44:14,861 INFO L125 PetriNetUnfolderBase]: For 15000/15022 co-relation queries the response was YES. [2024-06-28 01:44:14,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 1601 events. 816/1601 cut-off events. For 15000/15022 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10066 event pairs, 274 based on Foata normal form. 18/1610 useless extension candidates. Maximal degree in co-relation 7475. Up to 1220 conditions per place. [2024-06-28 01:44:14,872 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 133 selfloop transitions, 27 changer transitions 0/182 dead transitions. [2024-06-28 01:44:14,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 182 transitions, 1846 flow [2024-06-28 01:44:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:14,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:14,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-28 01:44:14,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-28 01:44:14,873 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1411 flow. Second operand 9 states and 176 transitions. [2024-06-28 01:44:14,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 182 transitions, 1846 flow [2024-06-28 01:44:14,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 182 transitions, 1751 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:14,907 INFO L231 Difference]: Finished difference. Result has 156 places, 155 transitions, 1410 flow [2024-06-28 01:44:14,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1410, PETRI_PLACES=156, PETRI_TRANSITIONS=155} [2024-06-28 01:44:14,908 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-28 01:44:14,908 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 155 transitions, 1410 flow [2024-06-28 01:44:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:14,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:44:14,908 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 01:44:14,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1325148627, now seen corresponding path program 1 times [2024-06-28 01:44:14,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:14,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676701608] [2024-06-28 01:44:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:15,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676701608] [2024-06-28 01:44:15,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676701608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:15,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:15,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:15,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903761102] [2024-06-28 01:44:15,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:15,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:15,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:15,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 1410 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:15,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:15,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:15,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:16,041 INFO L124 PetriNetUnfolderBase]: 900/1714 cut-off events. [2024-06-28 01:44:16,041 INFO L125 PetriNetUnfolderBase]: For 15318/15329 co-relation queries the response was YES. [2024-06-28 01:44:16,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8131 conditions, 1714 events. 900/1714 cut-off events. For 15318/15329 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10634 event pairs, 294 based on Foata normal form. 12/1687 useless extension candidates. Maximal degree in co-relation 8056. Up to 1389 conditions per place. [2024-06-28 01:44:16,055 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 143 selfloop transitions, 34 changer transitions 0/187 dead transitions. [2024-06-28 01:44:16,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 187 transitions, 1917 flow [2024-06-28 01:44:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:16,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:16,056 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 1410 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:16,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 187 transitions, 1917 flow [2024-06-28 01:44:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 187 transitions, 1851 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:16,095 INFO L231 Difference]: Finished difference. Result has 160 places, 157 transitions, 1458 flow [2024-06-28 01:44:16,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1458, PETRI_PLACES=160, PETRI_TRANSITIONS=157} [2024-06-28 01:44:16,096 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-28 01:44:16,096 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 157 transitions, 1458 flow [2024-06-28 01:44:16,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:16,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:16,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:16,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:44:16,096 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 01:44:16,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:16,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1536929133, now seen corresponding path program 3 times [2024-06-28 01:44:16,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:16,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256593330] [2024-06-28 01:44:16,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:16,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:16,685 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 01:44:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:16,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256593330] [2024-06-28 01:44:16,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256593330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:16,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:16,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:16,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246487524] [2024-06-28 01:44:16,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:16,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:16,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:16,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:16,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:16,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:16,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 157 transitions, 1458 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:16,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:16,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:16,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,127 INFO L124 PetriNetUnfolderBase]: 831/1636 cut-off events. [2024-06-28 01:44:17,127 INFO L125 PetriNetUnfolderBase]: For 17590/17632 co-relation queries the response was YES. [2024-06-28 01:44:17,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7852 conditions, 1636 events. 831/1636 cut-off events. For 17590/17632 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10319 event pairs, 247 based on Foata normal form. 38/1630 useless extension candidates. Maximal degree in co-relation 7776. Up to 1251 conditions per place. [2024-06-28 01:44:17,139 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 139 selfloop transitions, 26 changer transitions 0/187 dead transitions. [2024-06-28 01:44:17,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 187 transitions, 1932 flow [2024-06-28 01:44:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:17,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-28 01:44:17,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-28 01:44:17,141 INFO L175 Difference]: Start difference. First operand has 160 places, 157 transitions, 1458 flow. Second operand 9 states and 174 transitions. [2024-06-28 01:44:17,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 187 transitions, 1932 flow [2024-06-28 01:44:17,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 187 transitions, 1836 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:17,178 INFO L231 Difference]: Finished difference. Result has 162 places, 161 transitions, 1470 flow [2024-06-28 01:44:17,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1362, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1470, PETRI_PLACES=162, PETRI_TRANSITIONS=161} [2024-06-28 01:44:17,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-28 01:44:17,179 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 161 transitions, 1470 flow [2024-06-28 01:44:17,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:44:17,179 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 01:44:17,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1200672463, now seen corresponding path program 4 times [2024-06-28 01:44:17,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548390104] [2024-06-28 01:44:17,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:17,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:17,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548390104] [2024-06-28 01:44:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548390104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562364655] [2024-06-28 01:44:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:17,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:17,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:17,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:17,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:17,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:17,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 161 transitions, 1470 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:17,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:17,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:18,270 INFO L124 PetriNetUnfolderBase]: 872/1719 cut-off events. [2024-06-28 01:44:18,270 INFO L125 PetriNetUnfolderBase]: For 18242/18264 co-relation queries the response was YES. [2024-06-28 01:44:18,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8280 conditions, 1719 events. 872/1719 cut-off events. For 18242/18264 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11032 event pairs, 208 based on Foata normal form. 22/1696 useless extension candidates. Maximal degree in co-relation 8202. Up to 1273 conditions per place. [2024-06-28 01:44:18,282 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 137 selfloop transitions, 38 changer transitions 0/197 dead transitions. [2024-06-28 01:44:18,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 197 transitions, 1978 flow [2024-06-28 01:44:18,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-28 01:44:18,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-06-28 01:44:18,289 INFO L175 Difference]: Start difference. First operand has 162 places, 161 transitions, 1470 flow. Second operand 9 states and 178 transitions. [2024-06-28 01:44:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 197 transitions, 1978 flow [2024-06-28 01:44:18,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 197 transitions, 1915 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:18,330 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 1572 flow [2024-06-28 01:44:18,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1572, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2024-06-28 01:44:18,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-28 01:44:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 1572 flow [2024-06-28 01:44:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:18,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:44:18,332 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 01:44:18,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:18,332 INFO L85 PathProgramCache]: Analyzing trace with hash -773376647, now seen corresponding path program 5 times [2024-06-28 01:44:18,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:18,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950584267] [2024-06-28 01:44:18,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:18,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950584267] [2024-06-28 01:44:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950584267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:19,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:19,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175257500] [2024-06-28 01:44:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:19,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:19,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:19,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 1572 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:19,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:19,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:19,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:19,658 INFO L124 PetriNetUnfolderBase]: 895/1763 cut-off events. [2024-06-28 01:44:19,659 INFO L125 PetriNetUnfolderBase]: For 21201/21234 co-relation queries the response was YES. [2024-06-28 01:44:19,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8739 conditions, 1763 events. 895/1763 cut-off events. For 21201/21234 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11387 event pairs, 225 based on Foata normal form. 29/1745 useless extension candidates. Maximal degree in co-relation 8659. Up to 1335 conditions per place. [2024-06-28 01:44:19,673 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 138 selfloop transitions, 40 changer transitions 0/200 dead transitions. [2024-06-28 01:44:19,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 200 transitions, 2102 flow [2024-06-28 01:44:19,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:19,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:19,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 01:44:19,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:44:19,674 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 1572 flow. Second operand 9 states and 177 transitions. [2024-06-28 01:44:19,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 200 transitions, 2102 flow [2024-06-28 01:44:19,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 200 transitions, 2021 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:19,725 INFO L231 Difference]: Finished difference. Result has 171 places, 173 transitions, 1665 flow [2024-06-28 01:44:19,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1665, PETRI_PLACES=171, PETRI_TRANSITIONS=173} [2024-06-28 01:44:19,726 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 129 predicate places. [2024-06-28 01:44:19,726 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 173 transitions, 1665 flow [2024-06-28 01:44:19,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:19,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:19,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:19,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:44:19,726 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 01:44:19,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:19,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1047428363, now seen corresponding path program 2 times [2024-06-28 01:44:19,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:19,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383992992] [2024-06-28 01:44:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:20,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:20,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:20,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383992992] [2024-06-28 01:44:20,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383992992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:20,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:20,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:20,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318677923] [2024-06-28 01:44:20,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:20,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:20,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:20,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:20,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 173 transitions, 1665 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:20,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:20,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:21,021 INFO L124 PetriNetUnfolderBase]: 976/1863 cut-off events. [2024-06-28 01:44:21,021 INFO L125 PetriNetUnfolderBase]: For 20032/20055 co-relation queries the response was YES. [2024-06-28 01:44:21,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9186 conditions, 1863 events. 976/1863 cut-off events. For 20032/20055 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11822 event pairs, 259 based on Foata normal form. 24/1848 useless extension candidates. Maximal degree in co-relation 9104. Up to 1460 conditions per place. [2024-06-28 01:44:21,037 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 145 selfloop transitions, 48 changer transitions 0/203 dead transitions. [2024-06-28 01:44:21,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 203 transitions, 2211 flow [2024-06-28 01:44:21,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:21,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:44:21,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:44:21,044 INFO L175 Difference]: Start difference. First operand has 171 places, 173 transitions, 1665 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:44:21,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 203 transitions, 2211 flow [2024-06-28 01:44:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 203 transitions, 2112 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:21,099 INFO L231 Difference]: Finished difference. Result has 175 places, 175 transitions, 1718 flow [2024-06-28 01:44:21,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1718, PETRI_PLACES=175, PETRI_TRANSITIONS=175} [2024-06-28 01:44:21,099 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 133 predicate places. [2024-06-28 01:44:21,100 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 175 transitions, 1718 flow [2024-06-28 01:44:21,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:21,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:21,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:44:21,100 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 01:44:21,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash -620968523, now seen corresponding path program 6 times [2024-06-28 01:44:21,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:21,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951540672] [2024-06-28 01:44:21,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:21,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,775 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 01:44:21,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951540672] [2024-06-28 01:44:21,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951540672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:21,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998204397] [2024-06-28 01:44:21,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:21,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:21,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:21,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:21,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 175 transitions, 1718 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:21,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:22,342 INFO L124 PetriNetUnfolderBase]: 954/1874 cut-off events. [2024-06-28 01:44:22,343 INFO L125 PetriNetUnfolderBase]: For 22028/22059 co-relation queries the response was YES. [2024-06-28 01:44:22,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9313 conditions, 1874 events. 954/1874 cut-off events. For 22028/22059 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12232 event pairs, 164 based on Foata normal form. 31/1862 useless extension candidates. Maximal degree in co-relation 9229. Up to 1338 conditions per place. [2024-06-28 01:44:22,371 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 144 selfloop transitions, 49 changer transitions 0/215 dead transitions. [2024-06-28 01:44:22,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 215 transitions, 2310 flow [2024-06-28 01:44:22,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:22,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-28 01:44:22,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:44:22,372 INFO L175 Difference]: Start difference. First operand has 175 places, 175 transitions, 1718 flow. Second operand 9 states and 177 transitions. [2024-06-28 01:44:22,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 215 transitions, 2310 flow [2024-06-28 01:44:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 215 transitions, 2182 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:22,440 INFO L231 Difference]: Finished difference. Result has 179 places, 187 transitions, 1847 flow [2024-06-28 01:44:22,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1847, PETRI_PLACES=179, PETRI_TRANSITIONS=187} [2024-06-28 01:44:22,442 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-06-28 01:44:22,442 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 187 transitions, 1847 flow [2024-06-28 01:44:22,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:22,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:22,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:22,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:44:22,443 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 01:44:22,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1544563565, now seen corresponding path program 1 times [2024-06-28 01:44:22,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:22,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990024893] [2024-06-28 01:44:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:22,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:23,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:23,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:23,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990024893] [2024-06-28 01:44:23,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990024893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:23,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:23,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:23,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794414677] [2024-06-28 01:44:23,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:23,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:23,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:23,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:23,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:23,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:23,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 187 transitions, 1847 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:23,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:23,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:23,677 INFO L124 PetriNetUnfolderBase]: 1051/1996 cut-off events. [2024-06-28 01:44:23,677 INFO L125 PetriNetUnfolderBase]: For 23591/23617 co-relation queries the response was YES. [2024-06-28 01:44:23,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10257 conditions, 1996 events. 1051/1996 cut-off events. For 23591/23617 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12828 event pairs, 312 based on Foata normal form. 28/1985 useless extension candidates. Maximal degree in co-relation 10170. Up to 1544 conditions per place. [2024-06-28 01:44:23,691 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 182 selfloop transitions, 37 changer transitions 0/229 dead transitions. [2024-06-28 01:44:23,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 229 transitions, 2539 flow [2024-06-28 01:44:23,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:23,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:44:23,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:44:23,692 INFO L175 Difference]: Start difference. First operand has 179 places, 187 transitions, 1847 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:44:23,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 229 transitions, 2539 flow [2024-06-28 01:44:23,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 229 transitions, 2458 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:23,754 INFO L231 Difference]: Finished difference. Result has 185 places, 190 transitions, 1892 flow [2024-06-28 01:44:23,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1766, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1892, PETRI_PLACES=185, PETRI_TRANSITIONS=190} [2024-06-28 01:44:23,754 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 01:44:23,754 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 190 transitions, 1892 flow [2024-06-28 01:44:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:23,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:23,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:44:23,755 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 01:44:23,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:23,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1546970255, now seen corresponding path program 7 times [2024-06-28 01:44:23,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:23,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870433078] [2024-06-28 01:44:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:23,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:24,361 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 01:44:24,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:24,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870433078] [2024-06-28 01:44:24,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870433078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:24,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:24,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511079047] [2024-06-28 01:44:24,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:24,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:24,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:24,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:24,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 190 transitions, 1892 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:24,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:24,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,918 INFO L124 PetriNetUnfolderBase]: 981/1931 cut-off events. [2024-06-28 01:44:24,919 INFO L125 PetriNetUnfolderBase]: For 24464/24494 co-relation queries the response was YES. [2024-06-28 01:44:24,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10158 conditions, 1931 events. 981/1931 cut-off events. For 24464/24494 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12698 event pairs, 175 based on Foata normal form. 30/1915 useless extension candidates. Maximal degree in co-relation 10070. Up to 1330 conditions per place. [2024-06-28 01:44:24,936 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 147 selfloop transitions, 49 changer transitions 0/218 dead transitions. [2024-06-28 01:44:24,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 218 transitions, 2438 flow [2024-06-28 01:44:24,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:24,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 01:44:24,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-28 01:44:24,938 INFO L175 Difference]: Start difference. First operand has 185 places, 190 transitions, 1892 flow. Second operand 8 states and 158 transitions. [2024-06-28 01:44:24,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 218 transitions, 2438 flow [2024-06-28 01:44:24,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 218 transitions, 2334 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:25,002 INFO L231 Difference]: Finished difference. Result has 185 places, 194 transitions, 1984 flow [2024-06-28 01:44:25,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1984, PETRI_PLACES=185, PETRI_TRANSITIONS=194} [2024-06-28 01:44:25,003 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 143 predicate places. [2024-06-28 01:44:25,003 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 194 transitions, 1984 flow [2024-06-28 01:44:25,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:25,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:25,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:25,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:44:25,004 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 01:44:25,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:25,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1546908875, now seen corresponding path program 8 times [2024-06-28 01:44:25,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:25,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201740837] [2024-06-28 01:44:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:25,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:25,742 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 01:44:25,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:25,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201740837] [2024-06-28 01:44:25,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201740837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:25,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:25,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:25,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571111452] [2024-06-28 01:44:25,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:25,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:25,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:25,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:25,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 194 transitions, 1984 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:25,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:25,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:25,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:26,343 INFO L124 PetriNetUnfolderBase]: 997/1950 cut-off events. [2024-06-28 01:44:26,344 INFO L125 PetriNetUnfolderBase]: For 27036/27081 co-relation queries the response was YES. [2024-06-28 01:44:26,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1950 events. 997/1950 cut-off events. For 27036/27081 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12883 event pairs, 235 based on Foata normal form. 42/1940 useless extension candidates. Maximal degree in co-relation 10339. Up to 1460 conditions per place. [2024-06-28 01:44:26,358 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 153 selfloop transitions, 46 changer transitions 0/221 dead transitions. [2024-06-28 01:44:26,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 221 transitions, 2578 flow [2024-06-28 01:44:26,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:26,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 158 transitions. [2024-06-28 01:44:26,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197368421052632 [2024-06-28 01:44:26,361 INFO L175 Difference]: Start difference. First operand has 185 places, 194 transitions, 1984 flow. Second operand 8 states and 158 transitions. [2024-06-28 01:44:26,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 221 transitions, 2578 flow [2024-06-28 01:44:26,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 221 transitions, 2476 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:26,430 INFO L231 Difference]: Finished difference. Result has 189 places, 197 transitions, 2093 flow [2024-06-28 01:44:26,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2093, PETRI_PLACES=189, PETRI_TRANSITIONS=197} [2024-06-28 01:44:26,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-28 01:44:26,432 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 197 transitions, 2093 flow [2024-06-28 01:44:26,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:26,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:26,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:44:26,438 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 01:44:26,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:26,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1234553871, now seen corresponding path program 9 times [2024-06-28 01:44:26,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:26,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958324260] [2024-06-28 01:44:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:26,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:27,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:27,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:27,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958324260] [2024-06-28 01:44:27,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958324260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:27,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:27,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:27,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067247159] [2024-06-28 01:44:27,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:27,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:27,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:27,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:27,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:27,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:27,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 197 transitions, 2093 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:27,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:27,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:27,674 INFO L124 PetriNetUnfolderBase]: 1008/1980 cut-off events. [2024-06-28 01:44:27,675 INFO L125 PetriNetUnfolderBase]: For 26458/26496 co-relation queries the response was YES. [2024-06-28 01:44:27,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10634 conditions, 1980 events. 1008/1980 cut-off events. For 26458/26496 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13095 event pairs, 250 based on Foata normal form. 38/1972 useless extension candidates. Maximal degree in co-relation 10542. Up to 1531 conditions per place. [2024-06-28 01:44:27,692 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 172 selfloop transitions, 29 changer transitions 0/223 dead transitions. [2024-06-28 01:44:27,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 223 transitions, 2659 flow [2024-06-28 01:44:27,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:27,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 01:44:27,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-28 01:44:27,694 INFO L175 Difference]: Start difference. First operand has 189 places, 197 transitions, 2093 flow. Second operand 8 states and 155 transitions. [2024-06-28 01:44:27,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 223 transitions, 2659 flow [2024-06-28 01:44:27,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 223 transitions, 2554 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:27,776 INFO L231 Difference]: Finished difference. Result has 194 places, 200 transitions, 2107 flow [2024-06-28 01:44:27,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2107, PETRI_PLACES=194, PETRI_TRANSITIONS=200} [2024-06-28 01:44:27,777 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-28 01:44:27,777 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 200 transitions, 2107 flow [2024-06-28 01:44:27,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:27,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:27,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:44:27,778 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 01:44:27,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1619970375, now seen corresponding path program 10 times [2024-06-28 01:44:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026751951] [2024-06-28 01:44:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:27,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:28,457 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 01:44:28,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:28,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026751951] [2024-06-28 01:44:28,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026751951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:28,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:28,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:44:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423764977] [2024-06-28 01:44:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:28,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:44:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:28,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:44:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:44:28,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-28 01:44:28,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 200 transitions, 2107 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:28,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:28,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-28 01:44:28,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:29,023 INFO L124 PetriNetUnfolderBase]: 1006/1922 cut-off events. [2024-06-28 01:44:29,023 INFO L125 PetriNetUnfolderBase]: For 25817/25878 co-relation queries the response was YES. [2024-06-28 01:44:29,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10551 conditions, 1922 events. 1006/1922 cut-off events. For 25817/25878 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 12447 event pairs, 229 based on Foata normal form. 55/1948 useless extension candidates. Maximal degree in co-relation 10456. Up to 1524 conditions per place. [2024-06-28 01:44:29,040 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 173 selfloop transitions, 30 changer transitions 0/225 dead transitions. [2024-06-28 01:44:29,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 225 transitions, 2685 flow [2024-06-28 01:44:29,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:44:29,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:44:29,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 155 transitions. [2024-06-28 01:44:29,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098684210526315 [2024-06-28 01:44:29,042 INFO L175 Difference]: Start difference. First operand has 194 places, 200 transitions, 2107 flow. Second operand 8 states and 155 transitions. [2024-06-28 01:44:29,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 225 transitions, 2685 flow [2024-06-28 01:44:29,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 225 transitions, 2616 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 01:44:29,138 INFO L231 Difference]: Finished difference. Result has 199 places, 203 transitions, 2149 flow [2024-06-28 01:44:29,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2149, PETRI_PLACES=199, PETRI_TRANSITIONS=203} [2024-06-28 01:44:29,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2024-06-28 01:44:29,139 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 203 transitions, 2149 flow [2024-06-28 01:44:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:29,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:44:29,140 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 01:44:29,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1467610003, now seen corresponding path program 2 times [2024-06-28 01:44:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611238169] [2024-06-28 01:44:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:30,065 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 01:44:30,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:30,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611238169] [2024-06-28 01:44:30,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611238169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:30,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:30,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579669479] [2024-06-28 01:44:30,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:30,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:30,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:30,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:30,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 203 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:30,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:30,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:30,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:30,662 INFO L124 PetriNetUnfolderBase]: 1109/2136 cut-off events. [2024-06-28 01:44:30,662 INFO L125 PetriNetUnfolderBase]: For 24587/24617 co-relation queries the response was YES. [2024-06-28 01:44:30,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11400 conditions, 2136 events. 1109/2136 cut-off events. For 24587/24617 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14171 event pairs, 272 based on Foata normal form. 31/2125 useless extension candidates. Maximal degree in co-relation 11303. Up to 1678 conditions per place. [2024-06-28 01:44:30,682 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 200 selfloop transitions, 45 changer transitions 0/255 dead transitions. [2024-06-28 01:44:30,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 255 transitions, 3032 flow [2024-06-28 01:44:30,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 211 transitions. [2024-06-28 01:44:30,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46271929824561403 [2024-06-28 01:44:30,684 INFO L175 Difference]: Start difference. First operand has 199 places, 203 transitions, 2149 flow. Second operand 12 states and 211 transitions. [2024-06-28 01:44:30,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 255 transitions, 3032 flow [2024-06-28 01:44:30,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 255 transitions, 2950 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:30,752 INFO L231 Difference]: Finished difference. Result has 210 places, 222 transitions, 2438 flow [2024-06-28 01:44:30,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2438, PETRI_PLACES=210, PETRI_TRANSITIONS=222} [2024-06-28 01:44:30,753 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 168 predicate places. [2024-06-28 01:44:30,753 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 222 transitions, 2438 flow [2024-06-28 01:44:30,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:30,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:30,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:30,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:44:30,754 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 01:44:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash -2083209679, now seen corresponding path program 3 times [2024-06-28 01:44:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501582860] [2024-06-28 01:44:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:30,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:31,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501582860] [2024-06-28 01:44:31,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501582860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:31,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:31,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471059205] [2024-06-28 01:44:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:31,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:31,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:31,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:31,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:31,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:31,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 222 transitions, 2438 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:31,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:31,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:31,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:32,258 INFO L124 PetriNetUnfolderBase]: 1127/2131 cut-off events. [2024-06-28 01:44:32,258 INFO L125 PetriNetUnfolderBase]: For 25901/25943 co-relation queries the response was YES. [2024-06-28 01:44:32,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11856 conditions, 2131 events. 1127/2131 cut-off events. For 25901/25943 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13898 event pairs, 204 based on Foata normal form. 43/2142 useless extension candidates. Maximal degree in co-relation 11754. Up to 1554 conditions per place. [2024-06-28 01:44:32,281 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 213 selfloop transitions, 55 changer transitions 0/278 dead transitions. [2024-06-28 01:44:32,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 278 transitions, 3417 flow [2024-06-28 01:44:32,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:44:32,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:44:32,282 INFO L175 Difference]: Start difference. First operand has 210 places, 222 transitions, 2438 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:44:32,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 278 transitions, 3417 flow [2024-06-28 01:44:32,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 278 transitions, 3264 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:32,389 INFO L231 Difference]: Finished difference. Result has 219 places, 239 transitions, 2640 flow [2024-06-28 01:44:32,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2640, PETRI_PLACES=219, PETRI_TRANSITIONS=239} [2024-06-28 01:44:32,389 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 177 predicate places. [2024-06-28 01:44:32,389 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 239 transitions, 2640 flow [2024-06-28 01:44:32,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:32,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:32,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:32,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:44:32,390 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 01:44:32,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:32,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1835048301, now seen corresponding path program 4 times [2024-06-28 01:44:32,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:32,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220324832] [2024-06-28 01:44:32,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:32,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:33,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220324832] [2024-06-28 01:44:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220324832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248530850] [2024-06-28 01:44:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:33,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:33,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:33,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:33,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 239 transitions, 2640 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:33,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:33,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:33,938 INFO L124 PetriNetUnfolderBase]: 1144/2165 cut-off events. [2024-06-28 01:44:33,939 INFO L125 PetriNetUnfolderBase]: For 25842/25883 co-relation queries the response was YES. [2024-06-28 01:44:33,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12125 conditions, 2165 events. 1144/2165 cut-off events. For 25842/25883 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14190 event pairs, 193 based on Foata normal form. 42/2172 useless extension candidates. Maximal degree in co-relation 12019. Up to 1577 conditions per place. [2024-06-28 01:44:33,961 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 63 changer transitions 0/285 dead transitions. [2024-06-28 01:44:33,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 285 transitions, 3537 flow [2024-06-28 01:44:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:33,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:44:33,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:44:33,963 INFO L175 Difference]: Start difference. First operand has 219 places, 239 transitions, 2640 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:44:33,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 285 transitions, 3537 flow [2024-06-28 01:44:34,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 285 transitions, 3366 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:34,060 INFO L231 Difference]: Finished difference. Result has 227 places, 249 transitions, 2748 flow [2024-06-28 01:44:34,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2748, PETRI_PLACES=227, PETRI_TRANSITIONS=249} [2024-06-28 01:44:34,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-28 01:44:34,060 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 249 transitions, 2748 flow [2024-06-28 01:44:34,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:34,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:34,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:44:34,061 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 01:44:34,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1521349071, now seen corresponding path program 5 times [2024-06-28 01:44:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:34,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137386168] [2024-06-28 01:44:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:34,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:34,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:35,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:35,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137386168] [2024-06-28 01:44:35,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137386168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:35,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:35,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:35,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688187591] [2024-06-28 01:44:35,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:35,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:35,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:35,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 249 transitions, 2748 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:35,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:35,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:35,724 INFO L124 PetriNetUnfolderBase]: 1158/2176 cut-off events. [2024-06-28 01:44:35,725 INFO L125 PetriNetUnfolderBase]: For 26316/26357 co-relation queries the response was YES. [2024-06-28 01:44:35,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12398 conditions, 2176 events. 1158/2176 cut-off events. For 26316/26357 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14192 event pairs, 197 based on Foata normal form. 42/2184 useless extension candidates. Maximal degree in co-relation 12289. Up to 1598 conditions per place. [2024-06-28 01:44:35,745 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 207 selfloop transitions, 72 changer transitions 0/289 dead transitions. [2024-06-28 01:44:35,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 289 transitions, 3585 flow [2024-06-28 01:44:35,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:35,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:35,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:44:35,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:44:35,748 INFO L175 Difference]: Start difference. First operand has 227 places, 249 transitions, 2748 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:44:35,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 289 transitions, 3585 flow [2024-06-28 01:44:35,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 289 transitions, 3453 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:35,856 INFO L231 Difference]: Finished difference. Result has 234 places, 256 transitions, 2860 flow [2024-06-28 01:44:35,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2860, PETRI_PLACES=234, PETRI_TRANSITIONS=256} [2024-06-28 01:44:35,857 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-28 01:44:35,857 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 256 transitions, 2860 flow [2024-06-28 01:44:35,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:35,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:35,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:44:35,858 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 01:44:35,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:35,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1509921231, now seen corresponding path program 6 times [2024-06-28 01:44:35,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:35,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10746910] [2024-06-28 01:44:35,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:35,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,707 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 01:44:36,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10746910] [2024-06-28 01:44:36,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10746910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:36,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154349034] [2024-06-28 01:44:36,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:36,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:36,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:36,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:36,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 256 transitions, 2860 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:36,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,397 INFO L124 PetriNetUnfolderBase]: 1169/2225 cut-off events. [2024-06-28 01:44:37,397 INFO L125 PetriNetUnfolderBase]: For 28240/28273 co-relation queries the response was YES. [2024-06-28 01:44:37,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12677 conditions, 2225 events. 1169/2225 cut-off events. For 28240/28273 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 14766 event pairs, 351 based on Foata normal form. 34/2225 useless extension candidates. Maximal degree in co-relation 12566. Up to 1821 conditions per place. [2024-06-28 01:44:37,420 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 256 selfloop transitions, 34 changer transitions 0/300 dead transitions. [2024-06-28 01:44:37,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 300 transitions, 3812 flow [2024-06-28 01:44:37,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:37,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:44:37,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:44:37,422 INFO L175 Difference]: Start difference. First operand has 234 places, 256 transitions, 2860 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:44:37,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 300 transitions, 3812 flow [2024-06-28 01:44:37,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 300 transitions, 3674 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:37,527 INFO L231 Difference]: Finished difference. Result has 240 places, 261 transitions, 2869 flow [2024-06-28 01:44:37,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2869, PETRI_PLACES=240, PETRI_TRANSITIONS=261} [2024-06-28 01:44:37,527 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 198 predicate places. [2024-06-28 01:44:37,527 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 261 transitions, 2869 flow [2024-06-28 01:44:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:37,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:44:37,528 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 01:44:37,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1510307181, now seen corresponding path program 7 times [2024-06-28 01:44:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173809754] [2024-06-28 01:44:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:38,520 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 01:44:38,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:38,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173809754] [2024-06-28 01:44:38,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173809754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:38,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:38,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:38,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914716850] [2024-06-28 01:44:38,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:38,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:38,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:38,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:38,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:38,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:38,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 261 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:38,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,256 INFO L124 PetriNetUnfolderBase]: 1167/2210 cut-off events. [2024-06-28 01:44:39,256 INFO L125 PetriNetUnfolderBase]: For 27965/27998 co-relation queries the response was YES. [2024-06-28 01:44:39,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12498 conditions, 2210 events. 1167/2210 cut-off events. For 27965/27998 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14590 event pairs, 351 based on Foata normal form. 34/2212 useless extension candidates. Maximal degree in co-relation 12385. Up to 1846 conditions per place. [2024-06-28 01:44:39,278 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 255 selfloop transitions, 29 changer transitions 0/294 dead transitions. [2024-06-28 01:44:39,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 294 transitions, 3639 flow [2024-06-28 01:44:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:39,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-28 01:44:39,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4688995215311005 [2024-06-28 01:44:39,279 INFO L175 Difference]: Start difference. First operand has 240 places, 261 transitions, 2869 flow. Second operand 11 states and 196 transitions. [2024-06-28 01:44:39,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 294 transitions, 3639 flow [2024-06-28 01:44:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 294 transitions, 3565 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:39,391 INFO L231 Difference]: Finished difference. Result has 245 places, 261 transitions, 2859 flow [2024-06-28 01:44:39,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2859, PETRI_PLACES=245, PETRI_TRANSITIONS=261} [2024-06-28 01:44:39,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-28 01:44:39,392 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 261 transitions, 2859 flow [2024-06-28 01:44:39,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:44:39,392 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 01:44:39,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1624257437, now seen corresponding path program 1 times [2024-06-28 01:44:39,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010102175] [2024-06-28 01:44:39,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010102175] [2024-06-28 01:44:40,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010102175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003944920] [2024-06-28 01:44:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:40,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:40,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:40,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 261 transitions, 2859 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:40,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:40,647 INFO L124 PetriNetUnfolderBase]: 1196/2272 cut-off events. [2024-06-28 01:44:40,647 INFO L125 PetriNetUnfolderBase]: For 31761/31796 co-relation queries the response was YES. [2024-06-28 01:44:40,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12926 conditions, 2272 events. 1196/2272 cut-off events. For 31761/31796 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15096 event pairs, 297 based on Foata normal form. 37/2266 useless extension candidates. Maximal degree in co-relation 12811. Up to 1833 conditions per place. [2024-06-28 01:44:40,671 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 251 selfloop transitions, 34 changer transitions 0/295 dead transitions. [2024-06-28 01:44:40,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 295 transitions, 3696 flow [2024-06-28 01:44:40,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:40,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:40,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:44:40,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:44:40,673 INFO L175 Difference]: Start difference. First operand has 245 places, 261 transitions, 2859 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:44:40,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 295 transitions, 3696 flow [2024-06-28 01:44:40,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 295 transitions, 3630 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:40,784 INFO L231 Difference]: Finished difference. Result has 245 places, 263 transitions, 2908 flow [2024-06-28 01:44:40,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2908, PETRI_PLACES=245, PETRI_TRANSITIONS=263} [2024-06-28 01:44:40,785 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-28 01:44:40,785 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 263 transitions, 2908 flow [2024-06-28 01:44:40,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:40,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:40,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:44:40,786 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 01:44:40,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:40,786 INFO L85 PathProgramCache]: Analyzing trace with hash -605143437, now seen corresponding path program 2 times [2024-06-28 01:44:40,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:40,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810916102] [2024-06-28 01:44:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:40,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:41,457 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 01:44:41,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810916102] [2024-06-28 01:44:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810916102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:41,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:41,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473533491] [2024-06-28 01:44:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:41,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:41,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:41,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:41,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:41,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 263 transitions, 2908 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:41,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:41,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,086 INFO L124 PetriNetUnfolderBase]: 1193/2269 cut-off events. [2024-06-28 01:44:42,086 INFO L125 PetriNetUnfolderBase]: For 31154/31187 co-relation queries the response was YES. [2024-06-28 01:44:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12872 conditions, 2269 events. 1193/2269 cut-off events. For 31154/31187 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15061 event pairs, 314 based on Foata normal form. 35/2261 useless extension candidates. Maximal degree in co-relation 12756. Up to 1888 conditions per place. [2024-06-28 01:44:42,109 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 250 selfloop transitions, 33 changer transitions 0/293 dead transitions. [2024-06-28 01:44:42,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 293 transitions, 3619 flow [2024-06-28 01:44:42,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:42,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:42,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-28 01:44:42,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4842105263157895 [2024-06-28 01:44:42,112 INFO L175 Difference]: Start difference. First operand has 245 places, 263 transitions, 2908 flow. Second operand 10 states and 184 transitions. [2024-06-28 01:44:42,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 293 transitions, 3619 flow [2024-06-28 01:44:42,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 293 transitions, 3548 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:42,220 INFO L231 Difference]: Finished difference. Result has 249 places, 263 transitions, 2908 flow [2024-06-28 01:44:42,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2837, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2908, PETRI_PLACES=249, PETRI_TRANSITIONS=263} [2024-06-28 01:44:42,221 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 207 predicate places. [2024-06-28 01:44:42,221 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 263 transitions, 2908 flow [2024-06-28 01:44:42,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:42,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:42,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:44:42,222 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 01:44:42,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1487808239, now seen corresponding path program 3 times [2024-06-28 01:44:42,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:42,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295531282] [2024-06-28 01:44:42,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:42,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:42,888 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 01:44:42,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295531282] [2024-06-28 01:44:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295531282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:42,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:42,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708552121] [2024-06-28 01:44:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:42,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:42,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:42,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:42,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 263 transitions, 2908 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:42,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:42,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:43,626 INFO L124 PetriNetUnfolderBase]: 1206/2290 cut-off events. [2024-06-28 01:44:43,627 INFO L125 PetriNetUnfolderBase]: For 31940/31976 co-relation queries the response was YES. [2024-06-28 01:44:43,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12978 conditions, 2290 events. 1206/2290 cut-off events. For 31940/31976 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15201 event pairs, 302 based on Foata normal form. 38/2285 useless extension candidates. Maximal degree in co-relation 12860. Up to 1852 conditions per place. [2024-06-28 01:44:43,653 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 252 selfloop transitions, 34 changer transitions 0/296 dead transitions. [2024-06-28 01:44:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 296 transitions, 3637 flow [2024-06-28 01:44:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:43,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:43,656 INFO L175 Difference]: Start difference. First operand has 249 places, 263 transitions, 2908 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 296 transitions, 3637 flow [2024-06-28 01:44:43,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 296 transitions, 3567 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:43,782 INFO L231 Difference]: Finished difference. Result has 250 places, 264 transitions, 2936 flow [2024-06-28 01:44:43,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2838, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2936, PETRI_PLACES=250, PETRI_TRANSITIONS=264} [2024-06-28 01:44:43,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-28 01:44:43,783 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 264 transitions, 2936 flow [2024-06-28 01:44:43,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:43,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:44:43,783 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 01:44:43,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash -605136493, now seen corresponding path program 1 times [2024-06-28 01:44:43,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038434236] [2024-06-28 01:44:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:44,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:44,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038434236] [2024-06-28 01:44:44,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038434236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:44,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:44,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82388588] [2024-06-28 01:44:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:44,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:44,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:44,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 264 transitions, 2936 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:44,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:45,305 INFO L124 PetriNetUnfolderBase]: 1217/2315 cut-off events. [2024-06-28 01:44:45,305 INFO L125 PetriNetUnfolderBase]: For 32604/32637 co-relation queries the response was YES. [2024-06-28 01:44:45,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13207 conditions, 2315 events. 1217/2315 cut-off events. For 32604/32637 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15402 event pairs, 316 based on Foata normal form. 34/2306 useless extension candidates. Maximal degree in co-relation 13088. Up to 1925 conditions per place. [2024-06-28 01:44:45,332 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 255 selfloop transitions, 36 changer transitions 0/301 dead transitions. [2024-06-28 01:44:45,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 301 transitions, 3741 flow [2024-06-28 01:44:45,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:45,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:45,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:44:45,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:44:45,338 INFO L175 Difference]: Start difference. First operand has 250 places, 264 transitions, 2936 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:44:45,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 301 transitions, 3741 flow [2024-06-28 01:44:45,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 301 transitions, 3659 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:45,489 INFO L231 Difference]: Finished difference. Result has 253 places, 266 transitions, 2979 flow [2024-06-28 01:44:45,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2979, PETRI_PLACES=253, PETRI_TRANSITIONS=266} [2024-06-28 01:44:45,489 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 211 predicate places. [2024-06-28 01:44:45,490 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 266 transitions, 2979 flow [2024-06-28 01:44:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:45,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:44:45,490 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 01:44:45,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash 406597665, now seen corresponding path program 4 times [2024-06-28 01:44:45,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:45,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832919837] [2024-06-28 01:44:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:46,248 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 01:44:46,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:46,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832919837] [2024-06-28 01:44:46,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832919837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:46,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:46,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:46,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42226263] [2024-06-28 01:44:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:46,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:46,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 266 transitions, 2979 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:46,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:46,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:46,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:46,922 INFO L124 PetriNetUnfolderBase]: 1244/2358 cut-off events. [2024-06-28 01:44:46,922 INFO L125 PetriNetUnfolderBase]: For 34518/34558 co-relation queries the response was YES. [2024-06-28 01:44:46,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13557 conditions, 2358 events. 1244/2358 cut-off events. For 34518/34558 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15711 event pairs, 278 based on Foata normal form. 42/2357 useless extension candidates. Maximal degree in co-relation 13437. Up to 1871 conditions per place. [2024-06-28 01:44:46,948 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 235 selfloop transitions, 58 changer transitions 0/303 dead transitions. [2024-06-28 01:44:46,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 303 transitions, 3811 flow [2024-06-28 01:44:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:46,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:46,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:44:46,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:44:46,949 INFO L175 Difference]: Start difference. First operand has 253 places, 266 transitions, 2979 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:44:46,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 303 transitions, 3811 flow [2024-06-28 01:44:47,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 303 transitions, 3702 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:47,087 INFO L231 Difference]: Finished difference. Result has 256 places, 273 transitions, 3116 flow [2024-06-28 01:44:47,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3116, PETRI_PLACES=256, PETRI_TRANSITIONS=273} [2024-06-28 01:44:47,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-28 01:44:47,088 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 273 transitions, 3116 flow [2024-06-28 01:44:47,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:47,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:44:47,089 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 01:44:47,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 400341555, now seen corresponding path program 5 times [2024-06-28 01:44:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573335832] [2024-06-28 01:44:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:47,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573335832] [2024-06-28 01:44:47,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573335832] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:47,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:47,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886488174] [2024-06-28 01:44:47,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:47,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:47,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:47,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:47,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:47,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:47,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 273 transitions, 3116 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:47,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:47,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:48,557 INFO L124 PetriNetUnfolderBase]: 1257/2390 cut-off events. [2024-06-28 01:44:48,557 INFO L125 PetriNetUnfolderBase]: For 36688/36731 co-relation queries the response was YES. [2024-06-28 01:44:48,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13856 conditions, 2390 events. 1257/2390 cut-off events. For 36688/36731 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16073 event pairs, 328 based on Foata normal form. 45/2392 useless extension candidates. Maximal degree in co-relation 13733. Up to 1966 conditions per place. [2024-06-28 01:44:48,583 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 259 selfloop transitions, 35 changer transitions 0/304 dead transitions. [2024-06-28 01:44:48,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 304 transitions, 3888 flow [2024-06-28 01:44:48,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:48,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:48,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:48,612 INFO L175 Difference]: Start difference. First operand has 256 places, 273 transitions, 3116 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:48,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 304 transitions, 3888 flow [2024-06-28 01:44:48,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 304 transitions, 3781 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:48,812 INFO L231 Difference]: Finished difference. Result has 261 places, 274 transitions, 3112 flow [2024-06-28 01:44:48,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3009, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3112, PETRI_PLACES=261, PETRI_TRANSITIONS=274} [2024-06-28 01:44:48,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-28 01:44:48,813 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 274 transitions, 3112 flow [2024-06-28 01:44:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:44:48,813 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 01:44:48,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,814 INFO L85 PathProgramCache]: Analyzing trace with hash 400163925, now seen corresponding path program 6 times [2024-06-28 01:44:48,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937669178] [2024-06-28 01:44:48,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:49,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937669178] [2024-06-28 01:44:49,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937669178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:49,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469669941] [2024-06-28 01:44:49,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:49,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:49,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:49,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 274 transitions, 3112 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:49,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:50,213 INFO L124 PetriNetUnfolderBase]: 1270/2405 cut-off events. [2024-06-28 01:44:50,213 INFO L125 PetriNetUnfolderBase]: For 37570/37619 co-relation queries the response was YES. [2024-06-28 01:44:50,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 2405 events. 1270/2405 cut-off events. For 37570/37619 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16119 event pairs, 325 based on Foata normal form. 51/2413 useless extension candidates. Maximal degree in co-relation 13809. Up to 1924 conditions per place. [2024-06-28 01:44:50,236 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 260 selfloop transitions, 36 changer transitions 0/306 dead transitions. [2024-06-28 01:44:50,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 306 transitions, 3892 flow [2024-06-28 01:44:50,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:44:50,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:44:50,237 INFO L175 Difference]: Start difference. First operand has 261 places, 274 transitions, 3112 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:44:50,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 306 transitions, 3892 flow [2024-06-28 01:44:50,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 306 transitions, 3811 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:50,408 INFO L231 Difference]: Finished difference. Result has 265 places, 275 transitions, 3137 flow [2024-06-28 01:44:50,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3031, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3137, PETRI_PLACES=265, PETRI_TRANSITIONS=275} [2024-06-28 01:44:50,408 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 223 predicate places. [2024-06-28 01:44:50,408 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 275 transitions, 3137 flow [2024-06-28 01:44:50,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:50,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:50,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:50,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:44:50,409 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 01:44:50,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:50,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1348956019, now seen corresponding path program 7 times [2024-06-28 01:44:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:50,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55692532] [2024-06-28 01:44:50,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:50,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:51,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:51,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55692532] [2024-06-28 01:44:51,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55692532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:51,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:51,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:51,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375871206] [2024-06-28 01:44:51,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:51,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:51,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:51,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:51,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:51,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:51,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 275 transitions, 3137 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:51,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:51,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:51,931 INFO L124 PetriNetUnfolderBase]: 1290/2445 cut-off events. [2024-06-28 01:44:51,931 INFO L125 PetriNetUnfolderBase]: For 38965/39009 co-relation queries the response was YES. [2024-06-28 01:44:51,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14181 conditions, 2445 events. 1290/2445 cut-off events. For 38965/39009 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 16534 event pairs, 279 based on Foata normal form. 46/2448 useless extension candidates. Maximal degree in co-relation 14056. Up to 1955 conditions per place. [2024-06-28 01:44:51,961 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 254 selfloop transitions, 46 changer transitions 0/310 dead transitions. [2024-06-28 01:44:51,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 310 transitions, 3911 flow [2024-06-28 01:44:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:51,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:44:51,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:44:51,963 INFO L175 Difference]: Start difference. First operand has 265 places, 275 transitions, 3137 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:44:51,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 310 transitions, 3911 flow [2024-06-28 01:44:52,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 310 transitions, 3817 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:52,177 INFO L231 Difference]: Finished difference. Result has 267 places, 277 transitions, 3183 flow [2024-06-28 01:44:52,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3043, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3183, PETRI_PLACES=267, PETRI_TRANSITIONS=277} [2024-06-28 01:44:52,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-28 01:44:52,178 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 277 transitions, 3183 flow [2024-06-28 01:44:52,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:52,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:52,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:52,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:44:52,179 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 01:44:52,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash -62416849, now seen corresponding path program 8 times [2024-06-28 01:44:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:52,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960104098] [2024-06-28 01:44:52,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:52,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960104098] [2024-06-28 01:44:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960104098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475268359] [2024-06-28 01:44:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:53,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:53,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:53,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 277 transitions, 3183 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:53,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:53,750 INFO L124 PetriNetUnfolderBase]: 1334/2527 cut-off events. [2024-06-28 01:44:53,750 INFO L125 PetriNetUnfolderBase]: For 44274/44326 co-relation queries the response was YES. [2024-06-28 01:44:53,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14851 conditions, 2527 events. 1334/2527 cut-off events. For 44274/44326 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17194 event pairs, 301 based on Foata normal form. 54/2538 useless extension candidates. Maximal degree in co-relation 14725. Up to 2029 conditions per place. [2024-06-28 01:44:53,778 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 258 selfloop transitions, 48 changer transitions 0/316 dead transitions. [2024-06-28 01:44:53,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 316 transitions, 4185 flow [2024-06-28 01:44:53,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:53,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2024-06-28 01:44:53,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2024-06-28 01:44:53,780 INFO L175 Difference]: Start difference. First operand has 267 places, 277 transitions, 3183 flow. Second operand 10 states and 189 transitions. [2024-06-28 01:44:53,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 316 transitions, 4185 flow [2024-06-28 01:44:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 316 transitions, 4075 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:53,971 INFO L231 Difference]: Finished difference. Result has 271 places, 283 transitions, 3349 flow [2024-06-28 01:44:53,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3073, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3349, PETRI_PLACES=271, PETRI_TRANSITIONS=283} [2024-06-28 01:44:53,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 229 predicate places. [2024-06-28 01:44:53,972 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 283 transitions, 3349 flow [2024-06-28 01:44:53,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:53,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:53,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:44:53,973 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 01:44:53,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:53,973 INFO L85 PathProgramCache]: Analyzing trace with hash 714786837, now seen corresponding path program 9 times [2024-06-28 01:44:53,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:53,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997480896] [2024-06-28 01:44:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:53,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:53,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997480896] [2024-06-28 01:44:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997480896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513948373] [2024-06-28 01:44:54,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:54,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:54,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:54,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:54,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:54,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:54,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 283 transitions, 3349 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:54,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:54,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:55,371 INFO L124 PetriNetUnfolderBase]: 1331/2524 cut-off events. [2024-06-28 01:44:55,372 INFO L125 PetriNetUnfolderBase]: For 42946/42998 co-relation queries the response was YES. [2024-06-28 01:44:55,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14795 conditions, 2524 events. 1331/2524 cut-off events. For 42946/42998 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17166 event pairs, 321 based on Foata normal form. 54/2535 useless extension candidates. Maximal degree in co-relation 14666. Up to 2092 conditions per place. [2024-06-28 01:44:55,402 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 257 selfloop transitions, 47 changer transitions 0/314 dead transitions. [2024-06-28 01:44:55,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 314 transitions, 4105 flow [2024-06-28 01:44:55,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:55,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:55,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:44:55,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:44:55,404 INFO L175 Difference]: Start difference. First operand has 271 places, 283 transitions, 3349 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:44:55,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 314 transitions, 4105 flow [2024-06-28 01:44:55,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 314 transitions, 3958 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:55,673 INFO L231 Difference]: Finished difference. Result has 276 places, 283 transitions, 3303 flow [2024-06-28 01:44:55,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3303, PETRI_PLACES=276, PETRI_TRANSITIONS=283} [2024-06-28 01:44:55,675 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-28 01:44:55,676 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 283 transitions, 3303 flow [2024-06-28 01:44:55,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:55,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:55,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:44:55,676 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 01:44:55,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:55,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2070153971, now seen corresponding path program 10 times [2024-06-28 01:44:55,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:55,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074040371] [2024-06-28 01:44:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:56,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:56,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074040371] [2024-06-28 01:44:56,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074040371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:56,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:56,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180528627] [2024-06-28 01:44:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:56,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:56,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:56,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:56,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:56,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:56,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 283 transitions, 3303 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:56,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:56,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:57,183 INFO L124 PetriNetUnfolderBase]: 1358/2563 cut-off events. [2024-06-28 01:44:57,183 INFO L125 PetriNetUnfolderBase]: For 43101/43165 co-relation queries the response was YES. [2024-06-28 01:44:57,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14973 conditions, 2563 events. 1358/2563 cut-off events. For 43101/43165 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17406 event pairs, 229 based on Foata normal form. 66/2586 useless extension candidates. Maximal degree in co-relation 14842. Up to 1997 conditions per place. [2024-06-28 01:44:57,210 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 258 selfloop transitions, 51 changer transitions 0/319 dead transitions. [2024-06-28 01:44:57,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 319 transitions, 4109 flow [2024-06-28 01:44:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:57,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-28 01:44:57,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:44:57,212 INFO L175 Difference]: Start difference. First operand has 276 places, 283 transitions, 3303 flow. Second operand 10 states and 185 transitions. [2024-06-28 01:44:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 319 transitions, 4109 flow [2024-06-28 01:44:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 319 transitions, 4003 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:57,422 INFO L231 Difference]: Finished difference. Result has 277 places, 286 transitions, 3363 flow [2024-06-28 01:44:57,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3197, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3363, PETRI_PLACES=277, PETRI_TRANSITIONS=286} [2024-06-28 01:44:57,423 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 235 predicate places. [2024-06-28 01:44:57,423 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 286 transitions, 3363 flow [2024-06-28 01:44:57,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:57,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:44:57,424 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 01:44:57,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:57,424 INFO L85 PathProgramCache]: Analyzing trace with hash -62232275, now seen corresponding path program 2 times [2024-06-28 01:44:57,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:57,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623629940] [2024-06-28 01:44:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:58,055 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 01:44:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623629940] [2024-06-28 01:44:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623629940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:58,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318849140] [2024-06-28 01:44:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:58,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:58,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:58,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:58,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:44:58,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 286 transitions, 3363 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:58,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:44:58,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:58,779 INFO L124 PetriNetUnfolderBase]: 1394/2640 cut-off events. [2024-06-28 01:44:58,779 INFO L125 PetriNetUnfolderBase]: For 44145/44201 co-relation queries the response was YES. [2024-06-28 01:44:58,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15472 conditions, 2640 events. 1394/2640 cut-off events. For 44145/44201 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18134 event pairs, 345 based on Foata normal form. 57/2652 useless extension candidates. Maximal degree in co-relation 15340. Up to 2204 conditions per place. [2024-06-28 01:44:58,807 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 273 selfloop transitions, 47 changer transitions 0/330 dead transitions. [2024-06-28 01:44:58,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 330 transitions, 4269 flow [2024-06-28 01:44:58,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:44:58,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:44:58,809 INFO L175 Difference]: Start difference. First operand has 277 places, 286 transitions, 3363 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:44:58,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 330 transitions, 4269 flow [2024-06-28 01:44:59,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 330 transitions, 4149 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:59,032 INFO L231 Difference]: Finished difference. Result has 281 places, 294 transitions, 3451 flow [2024-06-28 01:44:59,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3451, PETRI_PLACES=281, PETRI_TRANSITIONS=294} [2024-06-28 01:44:59,033 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 239 predicate places. [2024-06-28 01:44:59,033 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 294 transitions, 3451 flow [2024-06-28 01:44:59,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:59,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:59,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:44:59,034 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 01:44:59,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:59,034 INFO L85 PathProgramCache]: Analyzing trace with hash 636831441, now seen corresponding path program 1 times [2024-06-28 01:44:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348872837] [2024-06-28 01:44:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:59,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:59,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348872837] [2024-06-28 01:44:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348872837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:59,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:59,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:59,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76751035] [2024-06-28 01:44:59,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:59,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:59,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:59,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:59,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:00,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:00,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 294 transitions, 3451 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:00,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:00,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:00,674 INFO L124 PetriNetUnfolderBase]: 1478/2796 cut-off events. [2024-06-28 01:45:00,674 INFO L125 PetriNetUnfolderBase]: For 60253/60314 co-relation queries the response was YES. [2024-06-28 01:45:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16372 conditions, 2796 events. 1478/2796 cut-off events. For 60253/60314 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19288 event pairs, 411 based on Foata normal form. 73/2825 useless extension candidates. Maximal degree in co-relation 16238. Up to 2105 conditions per place. [2024-06-28 01:45:00,712 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 285 selfloop transitions, 48 changer transitions 0/343 dead transitions. [2024-06-28 01:45:00,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 343 transitions, 4445 flow [2024-06-28 01:45:00,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:00,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 01:45:00,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-28 01:45:00,713 INFO L175 Difference]: Start difference. First operand has 281 places, 294 transitions, 3451 flow. Second operand 12 states and 230 transitions. [2024-06-28 01:45:00,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 343 transitions, 4445 flow [2024-06-28 01:45:00,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 343 transitions, 4321 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:00,972 INFO L231 Difference]: Finished difference. Result has 285 places, 295 transitions, 3446 flow [2024-06-28 01:45:00,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3446, PETRI_PLACES=285, PETRI_TRANSITIONS=295} [2024-06-28 01:45:00,973 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 243 predicate places. [2024-06-28 01:45:00,974 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 295 transitions, 3446 flow [2024-06-28 01:45:00,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:00,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:45:00,974 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 01:45:00,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,975 INFO L85 PathProgramCache]: Analyzing trace with hash -711436591, now seen corresponding path program 11 times [2024-06-28 01:45:00,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021569498] [2024-06-28 01:45:00,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:01,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:01,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021569498] [2024-06-28 01:45:01,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021569498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:01,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:01,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860587596] [2024-06-28 01:45:01,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:01,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:01,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:01,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:01,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 295 transitions, 3446 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:01,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:01,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:02,411 INFO L124 PetriNetUnfolderBase]: 1492/2807 cut-off events. [2024-06-28 01:45:02,412 INFO L125 PetriNetUnfolderBase]: For 50032/50100 co-relation queries the response was YES. [2024-06-28 01:45:02,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16578 conditions, 2807 events. 1492/2807 cut-off events. For 50032/50100 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19339 event pairs, 275 based on Foata normal form. 70/2831 useless extension candidates. Maximal degree in co-relation 16443. Up to 2109 conditions per place. [2024-06-28 01:45:02,443 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 260 selfloop transitions, 56 changer transitions 0/326 dead transitions. [2024-06-28 01:45:02,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 326 transitions, 4252 flow [2024-06-28 01:45:02,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:45:02,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:45:02,445 INFO L175 Difference]: Start difference. First operand has 285 places, 295 transitions, 3446 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:45:02,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 326 transitions, 4252 flow [2024-06-28 01:45:02,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 326 transitions, 4159 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:02,692 INFO L231 Difference]: Finished difference. Result has 284 places, 297 transitions, 3531 flow [2024-06-28 01:45:02,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3531, PETRI_PLACES=284, PETRI_TRANSITIONS=297} [2024-06-28 01:45:02,693 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-28 01:45:02,693 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 297 transitions, 3531 flow [2024-06-28 01:45:02,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:02,694 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 01:45:02,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:45:02,694 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 01:45:02,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:02,694 INFO L85 PathProgramCache]: Analyzing trace with hash 226893037, now seen corresponding path program 12 times [2024-06-28 01:45:02,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:02,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216045267] [2024-06-28 01:45:02,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:02,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216045267] [2024-06-28 01:45:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216045267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:03,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482192184] [2024-06-28 01:45:03,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:03,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:03,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:03,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 297 transitions, 3531 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:03,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,271 INFO L124 PetriNetUnfolderBase]: 1506/2843 cut-off events. [2024-06-28 01:45:04,271 INFO L125 PetriNetUnfolderBase]: For 53576/53644 co-relation queries the response was YES. [2024-06-28 01:45:04,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17023 conditions, 2843 events. 1506/2843 cut-off events. For 53576/53644 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 19705 event pairs, 385 based on Foata normal form. 70/2867 useless extension candidates. Maximal degree in co-relation 16887. Up to 2348 conditions per place. [2024-06-28 01:45:04,302 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 269 selfloop transitions, 48 changer transitions 0/327 dead transitions. [2024-06-28 01:45:04,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 327 transitions, 4353 flow [2024-06-28 01:45:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:04,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:45:04,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:45:04,304 INFO L175 Difference]: Start difference. First operand has 284 places, 297 transitions, 3531 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:45:04,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 327 transitions, 4353 flow [2024-06-28 01:45:04,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 327 transitions, 4213 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:04,551 INFO L231 Difference]: Finished difference. Result has 286 places, 299 transitions, 3549 flow [2024-06-28 01:45:04,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3395, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3549, PETRI_PLACES=286, PETRI_TRANSITIONS=299} [2024-06-28 01:45:04,552 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 244 predicate places. [2024-06-28 01:45:04,552 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 299 transitions, 3549 flow [2024-06-28 01:45:04,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:04,552 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 01:45:04,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:45:04,552 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 01:45:04,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:04,553 INFO L85 PathProgramCache]: Analyzing trace with hash -621948271, now seen corresponding path program 13 times [2024-06-28 01:45:04,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:04,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963396782] [2024-06-28 01:45:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:04,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:05,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:05,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963396782] [2024-06-28 01:45:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963396782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497729818] [2024-06-28 01:45:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:05,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:05,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:05,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:05,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 299 transitions, 3549 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:05,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:06,125 INFO L124 PetriNetUnfolderBase]: 1521/2870 cut-off events. [2024-06-28 01:45:06,125 INFO L125 PetriNetUnfolderBase]: For 52902/52975 co-relation queries the response was YES. [2024-06-28 01:45:06,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17183 conditions, 2870 events. 1521/2870 cut-off events. For 52902/52975 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19955 event pairs, 348 based on Foata normal form. 75/2899 useless extension candidates. Maximal degree in co-relation 17046. Up to 2209 conditions per place. [2024-06-28 01:45:06,159 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 260 selfloop transitions, 62 changer transitions 0/332 dead transitions. [2024-06-28 01:45:06,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 332 transitions, 4481 flow [2024-06-28 01:45:06,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:06,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:06,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:45:06,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:45:06,161 INFO L175 Difference]: Start difference. First operand has 286 places, 299 transitions, 3549 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:45:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 332 transitions, 4481 flow [2024-06-28 01:45:06,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 332 transitions, 4361 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:06,440 INFO L231 Difference]: Finished difference. Result has 288 places, 303 transitions, 3738 flow [2024-06-28 01:45:06,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3429, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3738, PETRI_PLACES=288, PETRI_TRANSITIONS=303} [2024-06-28 01:45:06,441 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 246 predicate places. [2024-06-28 01:45:06,441 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 303 transitions, 3738 flow [2024-06-28 01:45:06,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:06,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:06,441 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 01:45:06,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:45:06,441 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 01:45:06,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:06,442 INFO L85 PathProgramCache]: Analyzing trace with hash 389970461, now seen corresponding path program 14 times [2024-06-28 01:45:06,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:06,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267753098] [2024-06-28 01:45:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:06,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:06,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:07,073 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 01:45:07,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:07,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267753098] [2024-06-28 01:45:07,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267753098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:07,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:07,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:07,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779460357] [2024-06-28 01:45:07,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:07,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:07,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:07,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:07,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 303 transitions, 3738 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:07,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:07,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:07,830 INFO L124 PetriNetUnfolderBase]: 1543/2904 cut-off events. [2024-06-28 01:45:07,831 INFO L125 PetriNetUnfolderBase]: For 54503/54583 co-relation queries the response was YES. [2024-06-28 01:45:07,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17609 conditions, 2904 events. 1543/2904 cut-off events. For 54503/54583 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20246 event pairs, 419 based on Foata normal form. 82/2940 useless extension candidates. Maximal degree in co-relation 17471. Up to 2415 conditions per place. [2024-06-28 01:45:07,865 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 280 selfloop transitions, 44 changer transitions 0/334 dead transitions. [2024-06-28 01:45:07,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 334 transitions, 4607 flow [2024-06-28 01:45:07,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:07,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:07,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:45:07,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:45:07,867 INFO L175 Difference]: Start difference. First operand has 288 places, 303 transitions, 3738 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:45:07,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 334 transitions, 4607 flow [2024-06-28 01:45:08,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 334 transitions, 4440 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:08,154 INFO L231 Difference]: Finished difference. Result has 293 places, 307 transitions, 3758 flow [2024-06-28 01:45:08,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3575, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3758, PETRI_PLACES=293, PETRI_TRANSITIONS=307} [2024-06-28 01:45:08,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-28 01:45:08,154 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 307 transitions, 3758 flow [2024-06-28 01:45:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:08,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:08,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:45:08,155 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 01:45:08,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash 383714351, now seen corresponding path program 15 times [2024-06-28 01:45:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:08,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139891317] [2024-06-28 01:45:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:08,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:08,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:08,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139891317] [2024-06-28 01:45:08,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139891317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:08,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:08,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553644864] [2024-06-28 01:45:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:08,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:08,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 307 transitions, 3758 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:08,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:08,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:09,744 INFO L124 PetriNetUnfolderBase]: 1556/2928 cut-off events. [2024-06-28 01:45:09,745 INFO L125 PetriNetUnfolderBase]: For 51669/51751 co-relation queries the response was YES. [2024-06-28 01:45:09,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17730 conditions, 2928 events. 1556/2928 cut-off events. For 51669/51751 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20422 event pairs, 422 based on Foata normal form. 84/2966 useless extension candidates. Maximal degree in co-relation 17590. Up to 2438 conditions per place. [2024-06-28 01:45:09,774 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 282 selfloop transitions, 43 changer transitions 0/335 dead transitions. [2024-06-28 01:45:09,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 335 transitions, 4594 flow [2024-06-28 01:45:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:09,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:09,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:45:09,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:45:09,776 INFO L175 Difference]: Start difference. First operand has 293 places, 307 transitions, 3758 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:45:09,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 335 transitions, 4594 flow [2024-06-28 01:45:10,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 335 transitions, 4500 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:10,060 INFO L231 Difference]: Finished difference. Result has 297 places, 308 transitions, 3795 flow [2024-06-28 01:45:10,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3666, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3795, PETRI_PLACES=297, PETRI_TRANSITIONS=308} [2024-06-28 01:45:10,060 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 255 predicate places. [2024-06-28 01:45:10,061 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 308 transitions, 3795 flow [2024-06-28 01:45:10,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:10,061 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 01:45:10,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:45:10,061 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 01:45:10,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:10,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1232200399, now seen corresponding path program 16 times [2024-06-28 01:45:10,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:10,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64553880] [2024-06-28 01:45:10,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:10,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64553880] [2024-06-28 01:45:10,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64553880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:10,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884083563] [2024-06-28 01:45:10,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:10,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:10,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:10,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 308 transitions, 3795 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:10,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:11,527 INFO L124 PetriNetUnfolderBase]: 1569/2947 cut-off events. [2024-06-28 01:45:11,527 INFO L125 PetriNetUnfolderBase]: For 51942/52034 co-relation queries the response was YES. [2024-06-28 01:45:11,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17864 conditions, 2947 events. 1569/2947 cut-off events. For 51942/52034 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20544 event pairs, 409 based on Foata normal form. 94/2995 useless extension candidates. Maximal degree in co-relation 17723. Up to 2337 conditions per place. [2024-06-28 01:45:11,564 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 281 selfloop transitions, 46 changer transitions 0/337 dead transitions. [2024-06-28 01:45:11,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 337 transitions, 4637 flow [2024-06-28 01:45:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:11,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:11,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:45:11,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:45:11,566 INFO L175 Difference]: Start difference. First operand has 297 places, 308 transitions, 3795 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:45:11,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 337 transitions, 4637 flow [2024-06-28 01:45:11,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 337 transitions, 4539 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:11,851 INFO L231 Difference]: Finished difference. Result has 301 places, 309 transitions, 3833 flow [2024-06-28 01:45:11,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3833, PETRI_PLACES=301, PETRI_TRANSITIONS=309} [2024-06-28 01:45:11,852 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 259 predicate places. [2024-06-28 01:45:11,852 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 309 transitions, 3833 flow [2024-06-28 01:45:11,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:11,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:11,852 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 01:45:11,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:45:11,853 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 01:45:11,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash 226899981, now seen corresponding path program 3 times [2024-06-28 01:45:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:11,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698411947] [2024-06-28 01:45:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:12,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:12,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698411947] [2024-06-28 01:45:12,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698411947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:12,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:12,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:12,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619608605] [2024-06-28 01:45:12,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:12,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:12,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:12,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:12,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 309 transitions, 3833 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:12,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:12,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:13,640 INFO L124 PetriNetUnfolderBase]: 1570/2985 cut-off events. [2024-06-28 01:45:13,640 INFO L125 PetriNetUnfolderBase]: For 48944/49013 co-relation queries the response was YES. [2024-06-28 01:45:13,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17879 conditions, 2985 events. 1570/2985 cut-off events. For 48944/49013 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21063 event pairs, 394 based on Foata normal form. 70/3006 useless extension candidates. Maximal degree in co-relation 17737. Up to 2449 conditions per place. [2024-06-28 01:45:13,680 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 274 selfloop transitions, 60 changer transitions 0/344 dead transitions. [2024-06-28 01:45:13,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 344 transitions, 4727 flow [2024-06-28 01:45:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:13,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:45:13,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:45:13,682 INFO L175 Difference]: Start difference. First operand has 301 places, 309 transitions, 3833 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:45:13,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 344 transitions, 4727 flow [2024-06-28 01:45:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 344 transitions, 4607 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:13,983 INFO L231 Difference]: Finished difference. Result has 304 places, 311 transitions, 3903 flow [2024-06-28 01:45:13,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3903, PETRI_PLACES=304, PETRI_TRANSITIONS=311} [2024-06-28 01:45:13,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2024-06-28 01:45:13,983 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 311 transitions, 3903 flow [2024-06-28 01:45:13,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:13,984 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 01:45:13,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:45:13,984 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 01:45:13,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:13,984 INFO L85 PathProgramCache]: Analyzing trace with hash -163578163, now seen corresponding path program 17 times [2024-06-28 01:45:13,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:13,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416189387] [2024-06-28 01:45:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:13,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:14,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:14,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:14,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416189387] [2024-06-28 01:45:14,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416189387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:14,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:14,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:14,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995469856] [2024-06-28 01:45:14,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:14,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:14,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:14,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:14,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:14,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:14,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 311 transitions, 3903 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:14,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:14,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:15,337 INFO L124 PetriNetUnfolderBase]: 1592/2974 cut-off events. [2024-06-28 01:45:15,337 INFO L125 PetriNetUnfolderBase]: For 50892/50968 co-relation queries the response was YES. [2024-06-28 01:45:15,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18098 conditions, 2974 events. 1592/2974 cut-off events. For 50892/50968 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 20704 event pairs, 383 based on Foata normal form. 78/3018 useless extension candidates. Maximal degree in co-relation 17955. Up to 2441 conditions per place. [2024-06-28 01:45:15,373 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 284 selfloop transitions, 48 changer transitions 0/342 dead transitions. [2024-06-28 01:45:15,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 342 transitions, 4793 flow [2024-06-28 01:45:15,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:15,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 169 transitions. [2024-06-28 01:45:15,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49415204678362573 [2024-06-28 01:45:15,375 INFO L175 Difference]: Start difference. First operand has 304 places, 311 transitions, 3903 flow. Second operand 9 states and 169 transitions. [2024-06-28 01:45:15,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 342 transitions, 4793 flow [2024-06-28 01:45:15,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 342 transitions, 4633 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:15,665 INFO L231 Difference]: Finished difference. Result has 306 places, 315 transitions, 3911 flow [2024-06-28 01:45:15,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3743, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3911, PETRI_PLACES=306, PETRI_TRANSITIONS=315} [2024-06-28 01:45:15,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-28 01:45:15,666 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 315 transitions, 3911 flow [2024-06-28 01:45:15,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:15,666 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 01:45:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:45:15,666 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 01:45:15,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash -391479313, now seen corresponding path program 18 times [2024-06-28 01:45:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:15,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587318567] [2024-06-28 01:45:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:16,313 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 01:45:16,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:16,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587318567] [2024-06-28 01:45:16,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587318567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:16,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:16,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:16,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814936427] [2024-06-28 01:45:16,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:16,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:16,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:16,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:16,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:16,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:16,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 315 transitions, 3911 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:16,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:16,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:16,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:17,089 INFO L124 PetriNetUnfolderBase]: 1605/2995 cut-off events. [2024-06-28 01:45:17,090 INFO L125 PetriNetUnfolderBase]: For 49269/49347 co-relation queries the response was YES. [2024-06-28 01:45:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18090 conditions, 2995 events. 1605/2995 cut-off events. For 49269/49347 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 20846 event pairs, 381 based on Foata normal form. 80/3039 useless extension candidates. Maximal degree in co-relation 17945. Up to 2464 conditions per place. [2024-06-28 01:45:17,127 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 284 selfloop transitions, 49 changer transitions 0/343 dead transitions. [2024-06-28 01:45:17,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 343 transitions, 4781 flow [2024-06-28 01:45:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:17,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:17,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:45:17,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:45:17,128 INFO L175 Difference]: Start difference. First operand has 306 places, 315 transitions, 3911 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:45:17,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 343 transitions, 4781 flow [2024-06-28 01:45:17,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 343 transitions, 4657 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:17,438 INFO L231 Difference]: Finished difference. Result has 310 places, 317 transitions, 3944 flow [2024-06-28 01:45:17,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3787, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3944, PETRI_PLACES=310, PETRI_TRANSITIONS=317} [2024-06-28 01:45:17,439 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-28 01:45:17,439 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 317 transitions, 3944 flow [2024-06-28 01:45:17,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:17,439 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 01:45:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:45:17,440 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:45:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 521684603, now seen corresponding path program 19 times [2024-06-28 01:45:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073752485] [2024-06-28 01:45:17,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:17,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:18,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:18,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073752485] [2024-06-28 01:45:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073752485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:18,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:18,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:18,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871870820] [2024-06-28 01:45:18,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:18,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:18,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:18,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:18,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 317 transitions, 3944 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:18,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:18,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:18,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,989 INFO L124 PetriNetUnfolderBase]: 1619/3023 cut-off events. [2024-06-28 01:45:18,989 INFO L125 PetriNetUnfolderBase]: For 51195/51277 co-relation queries the response was YES. [2024-06-28 01:45:19,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18306 conditions, 3023 events. 1619/3023 cut-off events. For 51195/51277 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21131 event pairs, 378 based on Foata normal form. 84/3073 useless extension candidates. Maximal degree in co-relation 18159. Up to 2410 conditions per place. [2024-06-28 01:45:19,029 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 285 selfloop transitions, 52 changer transitions 0/347 dead transitions. [2024-06-28 01:45:19,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 347 transitions, 4960 flow [2024-06-28 01:45:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:19,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-28 01:45:19,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49707602339181284 [2024-06-28 01:45:19,031 INFO L175 Difference]: Start difference. First operand has 310 places, 317 transitions, 3944 flow. Second operand 9 states and 170 transitions. [2024-06-28 01:45:19,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 347 transitions, 4960 flow [2024-06-28 01:45:19,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 347 transitions, 4847 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:19,331 INFO L231 Difference]: Finished difference. Result has 315 places, 319 transitions, 4017 flow [2024-06-28 01:45:19,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3831, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4017, PETRI_PLACES=315, PETRI_TRANSITIONS=319} [2024-06-28 01:45:19,331 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 273 predicate places. [2024-06-28 01:45:19,331 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 319 transitions, 4017 flow [2024-06-28 01:45:19,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,332 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 01:45:19,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:45:19,332 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 01:45:19,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,332 INFO L85 PathProgramCache]: Analyzing trace with hash -147168491, now seen corresponding path program 20 times [2024-06-28 01:45:19,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234474529] [2024-06-28 01:45:19,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:20,073 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 01:45:20,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:20,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234474529] [2024-06-28 01:45:20,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234474529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:20,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:20,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:45:20,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588707403] [2024-06-28 01:45:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:20,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:45:20,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:20,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:45:20,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:45:20,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:20,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 319 transitions, 4017 flow. Second operand has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:20,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:20,834 INFO L124 PetriNetUnfolderBase]: 1616/3014 cut-off events. [2024-06-28 01:45:20,834 INFO L125 PetriNetUnfolderBase]: For 47901/47986 co-relation queries the response was YES. [2024-06-28 01:45:20,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18067 conditions, 3014 events. 1616/3014 cut-off events. For 47901/47986 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 21019 event pairs, 375 based on Foata normal form. 87/3069 useless extension candidates. Maximal degree in co-relation 17919. Up to 2485 conditions per place. [2024-06-28 01:45:20,871 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 281 selfloop transitions, 54 changer transitions 0/345 dead transitions. [2024-06-28 01:45:20,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 345 transitions, 4847 flow [2024-06-28 01:45:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:45:20,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:45:20,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-28 01:45:20,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-28 01:45:20,873 INFO L175 Difference]: Start difference. First operand has 315 places, 319 transitions, 4017 flow. Second operand 9 states and 167 transitions. [2024-06-28 01:45:20,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 345 transitions, 4847 flow [2024-06-28 01:45:21,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 345 transitions, 4726 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:21,201 INFO L231 Difference]: Finished difference. Result has 319 places, 319 transitions, 4008 flow [2024-06-28 01:45:21,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3896, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4008, PETRI_PLACES=319, PETRI_TRANSITIONS=319} [2024-06-28 01:45:21,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-28 01:45:21,202 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 319 transitions, 4008 flow [2024-06-28 01:45:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.3) internal successors, (123), 10 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:21,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:45:21,202 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 01:45:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash 35459669, now seen corresponding path program 2 times [2024-06-28 01:45:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626298852] [2024-06-28 01:45:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:22,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:22,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626298852] [2024-06-28 01:45:22,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626298852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:22,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:22,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680186757] [2024-06-28 01:45:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:22,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:22,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:22,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:22,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:22,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:22,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 319 transitions, 4008 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:22,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:22,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:22,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:22,940 INFO L124 PetriNetUnfolderBase]: 1632/3063 cut-off events. [2024-06-28 01:45:22,940 INFO L125 PetriNetUnfolderBase]: For 46104/46185 co-relation queries the response was YES. [2024-06-28 01:45:22,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18168 conditions, 3063 events. 1632/3063 cut-off events. For 46104/46185 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 21557 event pairs, 435 based on Foata normal form. 83/3101 useless extension candidates. Maximal degree in co-relation 18018. Up to 2548 conditions per place. [2024-06-28 01:45:22,980 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 304 selfloop transitions, 45 changer transitions 0/359 dead transitions. [2024-06-28 01:45:22,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 359 transitions, 4944 flow [2024-06-28 01:45:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:22,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:22,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:45:22,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:45:22,981 INFO L175 Difference]: Start difference. First operand has 319 places, 319 transitions, 4008 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:45:22,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 359 transitions, 4944 flow [2024-06-28 01:45:23,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 359 transitions, 4819 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:23,325 INFO L231 Difference]: Finished difference. Result has 322 places, 320 transitions, 3997 flow [2024-06-28 01:45:23,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3997, PETRI_PLACES=322, PETRI_TRANSITIONS=320} [2024-06-28 01:45:23,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 280 predicate places. [2024-06-28 01:45:23,325 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 320 transitions, 3997 flow [2024-06-28 01:45:23,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:23,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:23,326 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 01:45:23,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:45:23,326 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 01:45:23,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -138579755, now seen corresponding path program 3 times [2024-06-28 01:45:23,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:23,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381945390] [2024-06-28 01:45:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:23,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:24,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381945390] [2024-06-28 01:45:24,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381945390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:24,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:24,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:24,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405333858] [2024-06-28 01:45:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:24,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:24,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:24,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:24,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:24,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 320 transitions, 3997 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:24,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:24,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:25,202 INFO L124 PetriNetUnfolderBase]: 1648/3090 cut-off events. [2024-06-28 01:45:25,203 INFO L125 PetriNetUnfolderBase]: For 46991/47072 co-relation queries the response was YES. [2024-06-28 01:45:25,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18327 conditions, 3090 events. 1648/3090 cut-off events. For 46991/47072 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 21670 event pairs, 340 based on Foata normal form. 83/3134 useless extension candidates. Maximal degree in co-relation 18176. Up to 2440 conditions per place. [2024-06-28 01:45:25,237 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 283 selfloop transitions, 68 changer transitions 0/361 dead transitions. [2024-06-28 01:45:25,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 361 transitions, 4957 flow [2024-06-28 01:45:25,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:45:25,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:45:25,238 INFO L175 Difference]: Start difference. First operand has 322 places, 320 transitions, 3997 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:45:25,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 361 transitions, 4957 flow [2024-06-28 01:45:25,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 361 transitions, 4849 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:25,556 INFO L231 Difference]: Finished difference. Result has 324 places, 321 transitions, 4049 flow [2024-06-28 01:45:25,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4049, PETRI_PLACES=324, PETRI_TRANSITIONS=321} [2024-06-28 01:45:25,566 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 282 predicate places. [2024-06-28 01:45:25,566 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 321 transitions, 4049 flow [2024-06-28 01:45:25,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:25,566 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 01:45:25,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:45:25,567 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 01:45:25,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 758352119, now seen corresponding path program 4 times [2024-06-28 01:45:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894924321] [2024-06-28 01:45:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:26,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:26,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:26,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894924321] [2024-06-28 01:45:26,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894924321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:26,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:26,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:26,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132788059] [2024-06-28 01:45:26,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:26,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:26,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:26,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:26,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 321 transitions, 4049 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:26,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:26,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:26,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:27,448 INFO L124 PetriNetUnfolderBase]: 1664/3143 cut-off events. [2024-06-28 01:45:27,448 INFO L125 PetriNetUnfolderBase]: For 48935/49017 co-relation queries the response was YES. [2024-06-28 01:45:27,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18568 conditions, 3143 events. 1664/3143 cut-off events. For 48935/49017 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 22176 event pairs, 348 based on Foata normal form. 84/3190 useless extension candidates. Maximal degree in co-relation 18416. Up to 2468 conditions per place. [2024-06-28 01:45:27,486 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 288 selfloop transitions, 64 changer transitions 0/362 dead transitions. [2024-06-28 01:45:27,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 362 transitions, 5013 flow [2024-06-28 01:45:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:27,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:45:27,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:45:27,487 INFO L175 Difference]: Start difference. First operand has 324 places, 321 transitions, 4049 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:45:27,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 362 transitions, 5013 flow [2024-06-28 01:45:27,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 362 transitions, 4863 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:27,763 INFO L231 Difference]: Finished difference. Result has 326 places, 322 transitions, 4053 flow [2024-06-28 01:45:27,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3899, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4053, PETRI_PLACES=326, PETRI_TRANSITIONS=322} [2024-06-28 01:45:27,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2024-06-28 01:45:27,764 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 322 transitions, 4053 flow [2024-06-28 01:45:27,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:27,765 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 01:45:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:45:27,765 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 01:45:27,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1338460373, now seen corresponding path program 5 times [2024-06-28 01:45:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:27,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956269835] [2024-06-28 01:45:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:27,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:28,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:28,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956269835] [2024-06-28 01:45:28,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956269835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:28,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:28,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982583677] [2024-06-28 01:45:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:28,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:28,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:28,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 322 transitions, 4053 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:28,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:28,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:28,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:29,572 INFO L124 PetriNetUnfolderBase]: 1680/3168 cut-off events. [2024-06-28 01:45:29,573 INFO L125 PetriNetUnfolderBase]: For 50682/50752 co-relation queries the response was YES. [2024-06-28 01:45:29,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18719 conditions, 3168 events. 1680/3168 cut-off events. For 50682/50752 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 22471 event pairs, 590 based on Foata normal form. 72/3202 useless extension candidates. Maximal degree in co-relation 18566. Up to 2730 conditions per place. [2024-06-28 01:45:29,611 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 323 selfloop transitions, 29 changer transitions 0/362 dead transitions. [2024-06-28 01:45:29,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 362 transitions, 5015 flow [2024-06-28 01:45:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:29,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-28 01:45:29,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48086124401913877 [2024-06-28 01:45:29,613 INFO L175 Difference]: Start difference. First operand has 326 places, 322 transitions, 4053 flow. Second operand 11 states and 201 transitions. [2024-06-28 01:45:29,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 362 transitions, 5015 flow [2024-06-28 01:45:29,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 362 transitions, 4871 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:29,913 INFO L231 Difference]: Finished difference. Result has 328 places, 323 transitions, 3995 flow [2024-06-28 01:45:29,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3909, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3995, PETRI_PLACES=328, PETRI_TRANSITIONS=323} [2024-06-28 01:45:29,917 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-28 01:45:29,917 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 323 transitions, 3995 flow [2024-06-28 01:45:29,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:29,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:29,917 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 01:45:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:45:29,917 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 01:45:29,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 996161783, now seen corresponding path program 6 times [2024-06-28 01:45:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:29,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208392797] [2024-06-28 01:45:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:30,775 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 01:45:30,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:30,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208392797] [2024-06-28 01:45:30,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208392797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:30,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:30,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:30,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624810593] [2024-06-28 01:45:30,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:30,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:30,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:30,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:30,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:30,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:30,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 323 transitions, 3995 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:30,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:30,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:31,663 INFO L124 PetriNetUnfolderBase]: 1696/3177 cut-off events. [2024-06-28 01:45:31,664 INFO L125 PetriNetUnfolderBase]: For 50655/50736 co-relation queries the response was YES. [2024-06-28 01:45:31,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18636 conditions, 3177 events. 1696/3177 cut-off events. For 50655/50736 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 22375 event pairs, 340 based on Foata normal form. 83/3224 useless extension candidates. Maximal degree in co-relation 18482. Up to 2524 conditions per place. [2024-06-28 01:45:31,703 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 279 selfloop transitions, 74 changer transitions 0/363 dead transitions. [2024-06-28 01:45:31,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 363 transitions, 4961 flow [2024-06-28 01:45:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:31,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 01:45:31,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-28 01:45:31,705 INFO L175 Difference]: Start difference. First operand has 328 places, 323 transitions, 3995 flow. Second operand 11 states and 207 transitions. [2024-06-28 01:45:31,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 363 transitions, 4961 flow [2024-06-28 01:45:32,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 363 transitions, 4885 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:32,051 INFO L231 Difference]: Finished difference. Result has 330 places, 324 transitions, 4097 flow [2024-06-28 01:45:32,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3919, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4097, PETRI_PLACES=330, PETRI_TRANSITIONS=324} [2024-06-28 01:45:32,051 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 288 predicate places. [2024-06-28 01:45:32,051 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 324 transitions, 4097 flow [2024-06-28 01:45:32,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:32,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:32,052 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 01:45:32,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:45:32,052 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 01:45:32,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 437083277, now seen corresponding path program 7 times [2024-06-28 01:45:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:32,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98482379] [2024-06-28 01:45:32,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:33,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:33,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98482379] [2024-06-28 01:45:33,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98482379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:33,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:33,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:33,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931389713] [2024-06-28 01:45:33,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:33,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:33,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:33,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:33,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:33,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:33,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 324 transitions, 4097 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:33,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:33,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:34,148 INFO L124 PetriNetUnfolderBase]: 1801/3403 cut-off events. [2024-06-28 01:45:34,148 INFO L125 PetriNetUnfolderBase]: For 73242/73312 co-relation queries the response was YES. [2024-06-28 01:45:34,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20024 conditions, 3403 events. 1801/3403 cut-off events. For 73242/73312 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24381 event pairs, 620 based on Foata normal form. 83/3452 useless extension candidates. Maximal degree in co-relation 19869. Up to 2750 conditions per place. [2024-06-28 01:45:34,193 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 344 selfloop transitions, 27 changer transitions 0/381 dead transitions. [2024-06-28 01:45:34,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 381 transitions, 5289 flow [2024-06-28 01:45:34,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:34,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:34,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 226 transitions. [2024-06-28 01:45:34,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956140350877193 [2024-06-28 01:45:34,194 INFO L175 Difference]: Start difference. First operand has 330 places, 324 transitions, 4097 flow. Second operand 12 states and 226 transitions. [2024-06-28 01:45:34,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 381 transitions, 5289 flow [2024-06-28 01:45:34,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 381 transitions, 5119 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:34,549 INFO L231 Difference]: Finished difference. Result has 334 places, 332 transitions, 4121 flow [2024-06-28 01:45:34,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3929, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4121, PETRI_PLACES=334, PETRI_TRANSITIONS=332} [2024-06-28 01:45:34,550 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 292 predicate places. [2024-06-28 01:45:34,550 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 332 transitions, 4121 flow [2024-06-28 01:45:34,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:34,550 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 01:45:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:45:34,551 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 01:45:34,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:34,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1350840533, now seen corresponding path program 8 times [2024-06-28 01:45:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:34,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072057686] [2024-06-28 01:45:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:35,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072057686] [2024-06-28 01:45:35,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072057686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:35,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:35,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:35,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324461703] [2024-06-28 01:45:35,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:35,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:35,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:35,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:35,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 332 transitions, 4121 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:35,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:35,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:35,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:36,668 INFO L124 PetriNetUnfolderBase]: 1802/3409 cut-off events. [2024-06-28 01:45:36,669 INFO L125 PetriNetUnfolderBase]: For 55095/55165 co-relation queries the response was YES. [2024-06-28 01:45:36,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19852 conditions, 3409 events. 1802/3409 cut-off events. For 55095/55165 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24551 event pairs, 603 based on Foata normal form. 72/3445 useless extension candidates. Maximal degree in co-relation 19695. Up to 2829 conditions per place. [2024-06-28 01:45:36,709 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 324 selfloop transitions, 44 changer transitions 0/378 dead transitions. [2024-06-28 01:45:36,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 378 transitions, 5155 flow [2024-06-28 01:45:36,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:45:36,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:45:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-06-28 01:45:36,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716599190283401 [2024-06-28 01:45:36,710 INFO L175 Difference]: Start difference. First operand has 334 places, 332 transitions, 4121 flow. Second operand 13 states and 233 transitions. [2024-06-28 01:45:36,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 378 transitions, 5155 flow [2024-06-28 01:45:37,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 378 transitions, 5061 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:37,137 INFO L231 Difference]: Finished difference. Result has 338 places, 333 transitions, 4148 flow [2024-06-28 01:45:37,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4027, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4148, PETRI_PLACES=338, PETRI_TRANSITIONS=333} [2024-06-28 01:45:37,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 296 predicate places. [2024-06-28 01:45:37,137 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 333 transitions, 4148 flow [2024-06-28 01:45:37,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:37,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:37,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:45:37,138 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 01:45:37,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1750474646, now seen corresponding path program 1 times [2024-06-28 01:45:37,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:37,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103754720] [2024-06-28 01:45:37,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:37,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:37,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103754720] [2024-06-28 01:45:37,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103754720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:37,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:37,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679444784] [2024-06-28 01:45:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:37,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:37,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:37,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:37,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:37,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:37,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 333 transitions, 4148 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:37,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:37,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:38,927 INFO L124 PetriNetUnfolderBase]: 1818/3443 cut-off events. [2024-06-28 01:45:38,927 INFO L125 PetriNetUnfolderBase]: For 55258/55333 co-relation queries the response was YES. [2024-06-28 01:45:38,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19966 conditions, 3443 events. 1818/3443 cut-off events. For 55258/55333 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24741 event pairs, 572 based on Foata normal form. 77/3469 useless extension candidates. Maximal degree in co-relation 19808. Up to 2977 conditions per place. [2024-06-28 01:45:38,972 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 322 selfloop transitions, 37 changer transitions 0/369 dead transitions. [2024-06-28 01:45:38,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 369 transitions, 5060 flow [2024-06-28 01:45:38,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:38,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:45:38,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:45:38,974 INFO L175 Difference]: Start difference. First operand has 338 places, 333 transitions, 4148 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:45:38,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 369 transitions, 5060 flow [2024-06-28 01:45:39,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 369 transitions, 4883 flow, removed 34 selfloop flow, removed 12 redundant places. [2024-06-28 01:45:39,363 INFO L231 Difference]: Finished difference. Result has 337 places, 334 transitions, 4072 flow [2024-06-28 01:45:39,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3971, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4072, PETRI_PLACES=337, PETRI_TRANSITIONS=334} [2024-06-28 01:45:39,364 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-28 01:45:39,364 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 334 transitions, 4072 flow [2024-06-28 01:45:39,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:39,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:39,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:45:39,365 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 01:45:39,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:39,365 INFO L85 PathProgramCache]: Analyzing trace with hash 169763284, now seen corresponding path program 2 times [2024-06-28 01:45:39,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:39,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153244027] [2024-06-28 01:45:39,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:39,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:40,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:40,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153244027] [2024-06-28 01:45:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153244027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:40,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:40,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:40,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292920615] [2024-06-28 01:45:40,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:40,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:40,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:40,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:40,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 334 transitions, 4072 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:40,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:40,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:41,068 INFO L124 PetriNetUnfolderBase]: 1834/3475 cut-off events. [2024-06-28 01:45:41,069 INFO L125 PetriNetUnfolderBase]: For 55575/55654 co-relation queries the response was YES. [2024-06-28 01:45:41,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19742 conditions, 3475 events. 1834/3475 cut-off events. For 55575/55654 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 25000 event pairs, 569 based on Foata normal form. 81/3503 useless extension candidates. Maximal degree in co-relation 19585. Up to 2945 conditions per place. [2024-06-28 01:45:41,113 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 324 selfloop transitions, 38 changer transitions 0/372 dead transitions. [2024-06-28 01:45:41,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 372 transitions, 4998 flow [2024-06-28 01:45:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:45:41,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:45:41,116 INFO L175 Difference]: Start difference. First operand has 337 places, 334 transitions, 4072 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:45:41,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 372 transitions, 4998 flow [2024-06-28 01:45:41,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 372 transitions, 4909 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:41,465 INFO L231 Difference]: Finished difference. Result has 339 places, 335 transitions, 4088 flow [2024-06-28 01:45:41,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3983, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4088, PETRI_PLACES=339, PETRI_TRANSITIONS=335} [2024-06-28 01:45:41,466 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 297 predicate places. [2024-06-28 01:45:41,466 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 335 transitions, 4088 flow [2024-06-28 01:45:41,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:41,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:41,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:41,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:45:41,467 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 01:45:41,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1585082804, now seen corresponding path program 3 times [2024-06-28 01:45:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207100732] [2024-06-28 01:45:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:41,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:42,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:42,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207100732] [2024-06-28 01:45:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207100732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:42,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:42,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:42,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896716203] [2024-06-28 01:45:42,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:42,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:42,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:42,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:42,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:42,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 335 transitions, 4088 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:42,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:43,171 INFO L124 PetriNetUnfolderBase]: 1850/3517 cut-off events. [2024-06-28 01:45:43,171 INFO L125 PetriNetUnfolderBase]: For 57304/57385 co-relation queries the response was YES. [2024-06-28 01:45:43,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19934 conditions, 3517 events. 1850/3517 cut-off events. For 57304/57385 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 25362 event pairs, 548 based on Foata normal form. 83/3543 useless extension candidates. Maximal degree in co-relation 19776. Up to 2877 conditions per place. [2024-06-28 01:45:43,215 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 325 selfloop transitions, 39 changer transitions 0/374 dead transitions. [2024-06-28 01:45:43,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 374 transitions, 5022 flow [2024-06-28 01:45:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:43,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:45:43,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:45:43,216 INFO L175 Difference]: Start difference. First operand has 339 places, 335 transitions, 4088 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:45:43,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 374 transitions, 5022 flow [2024-06-28 01:45:43,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 374 transitions, 4929 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:43,605 INFO L231 Difference]: Finished difference. Result has 341 places, 336 transitions, 4104 flow [2024-06-28 01:45:43,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3995, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4104, PETRI_PLACES=341, PETRI_TRANSITIONS=336} [2024-06-28 01:45:43,605 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 299 predicate places. [2024-06-28 01:45:43,606 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 336 transitions, 4104 flow [2024-06-28 01:45:43,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:43,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:43,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:45:43,606 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 01:45:43,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1685086130, now seen corresponding path program 4 times [2024-06-28 01:45:43,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:43,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526668833] [2024-06-28 01:45:43,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:43,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:44,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:44,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526668833] [2024-06-28 01:45:44,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526668833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:44,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:44,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:44,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380885357] [2024-06-28 01:45:44,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:44,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:44,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:44,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:44,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:44,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:44,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 336 transitions, 4104 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:44,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:44,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:44,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:45,224 INFO L124 PetriNetUnfolderBase]: 1866/3537 cut-off events. [2024-06-28 01:45:45,225 INFO L125 PetriNetUnfolderBase]: For 58754/58834 co-relation queries the response was YES. [2024-06-28 01:45:45,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20102 conditions, 3537 events. 1866/3537 cut-off events. For 58754/58834 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25446 event pairs, 574 based on Foata normal form. 82/3564 useless extension candidates. Maximal degree in co-relation 19943. Up to 2971 conditions per place. [2024-06-28 01:45:45,269 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 327 selfloop transitions, 37 changer transitions 0/374 dead transitions. [2024-06-28 01:45:45,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 374 transitions, 5021 flow [2024-06-28 01:45:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:45,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 203 transitions. [2024-06-28 01:45:45,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48564593301435405 [2024-06-28 01:45:45,271 INFO L175 Difference]: Start difference. First operand has 341 places, 336 transitions, 4104 flow. Second operand 11 states and 203 transitions. [2024-06-28 01:45:45,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 374 transitions, 5021 flow [2024-06-28 01:45:45,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 374 transitions, 4924 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:45,722 INFO L231 Difference]: Finished difference. Result has 343 places, 337 transitions, 4115 flow [2024-06-28 01:45:45,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4115, PETRI_PLACES=343, PETRI_TRANSITIONS=337} [2024-06-28 01:45:45,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 301 predicate places. [2024-06-28 01:45:45,722 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 337 transitions, 4115 flow [2024-06-28 01:45:45,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:45,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:45,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:45,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:45:45,723 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 01:45:45,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:45,723 INFO L85 PathProgramCache]: Analyzing trace with hash 169978610, now seen corresponding path program 1 times [2024-06-28 01:45:45,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:45,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072259207] [2024-06-28 01:45:45,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:45,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:46,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:46,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072259207] [2024-06-28 01:45:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072259207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:46,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:46,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615513967] [2024-06-28 01:45:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:46,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:46,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:46,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:46,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:46,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 337 transitions, 4115 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:46,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:46,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:47,716 INFO L124 PetriNetUnfolderBase]: 1889/3629 cut-off events. [2024-06-28 01:45:47,717 INFO L125 PetriNetUnfolderBase]: For 58214/58293 co-relation queries the response was YES. [2024-06-28 01:45:47,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20513 conditions, 3629 events. 1889/3629 cut-off events. For 58214/58293 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 26426 event pairs, 579 based on Foata normal form. 80/3644 useless extension candidates. Maximal degree in co-relation 20353. Up to 3079 conditions per place. [2024-06-28 01:45:47,764 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 326 selfloop transitions, 58 changer transitions 0/394 dead transitions. [2024-06-28 01:45:47,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 394 transitions, 5414 flow [2024-06-28 01:45:47,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:45:47,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:45:47,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 234 transitions. [2024-06-28 01:45:47,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-28 01:45:47,765 INFO L175 Difference]: Start difference. First operand has 343 places, 337 transitions, 4115 flow. Second operand 13 states and 234 transitions. [2024-06-28 01:45:47,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 394 transitions, 5414 flow [2024-06-28 01:45:48,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 394 transitions, 5320 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:48,271 INFO L231 Difference]: Finished difference. Result has 352 places, 355 transitions, 4552 flow [2024-06-28 01:45:48,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4552, PETRI_PLACES=352, PETRI_TRANSITIONS=355} [2024-06-28 01:45:48,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 310 predicate places. [2024-06-28 01:45:48,272 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 355 transitions, 4552 flow [2024-06-28 01:45:48,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:48,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:48,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:48,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:45:48,272 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 01:45:48,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:48,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1275026964, now seen corresponding path program 5 times [2024-06-28 01:45:48,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:48,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129875491] [2024-06-28 01:45:48,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:48,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:49,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129875491] [2024-06-28 01:45:49,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129875491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:49,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:49,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:49,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374042777] [2024-06-28 01:45:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:49,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:49,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:49,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:49,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:49,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:49,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 355 transitions, 4552 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:49,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:49,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:49,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:50,150 INFO L124 PetriNetUnfolderBase]: 1942/3704 cut-off events. [2024-06-28 01:45:50,150 INFO L125 PetriNetUnfolderBase]: For 69331/69420 co-relation queries the response was YES. [2024-06-28 01:45:50,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21498 conditions, 3704 events. 1942/3704 cut-off events. For 69331/69420 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 26970 event pairs, 602 based on Foata normal form. 91/3737 useless extension candidates. Maximal degree in co-relation 21332. Up to 3067 conditions per place. [2024-06-28 01:45:50,200 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 351 selfloop transitions, 42 changer transitions 0/403 dead transitions. [2024-06-28 01:45:50,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 403 transitions, 5787 flow [2024-06-28 01:45:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:50,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 01:45:50,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2024-06-28 01:45:50,203 INFO L175 Difference]: Start difference. First operand has 352 places, 355 transitions, 4552 flow. Second operand 11 states and 212 transitions. [2024-06-28 01:45:50,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 403 transitions, 5787 flow [2024-06-28 01:45:50,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 403 transitions, 5604 flow, removed 76 selfloop flow, removed 5 redundant places. [2024-06-28 01:45:50,748 INFO L231 Difference]: Finished difference. Result has 359 places, 362 transitions, 4575 flow [2024-06-28 01:45:50,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4575, PETRI_PLACES=359, PETRI_TRANSITIONS=362} [2024-06-28 01:45:50,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 317 predicate places. [2024-06-28 01:45:50,749 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 362 transitions, 4575 flow [2024-06-28 01:45:50,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:50,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:45:50,750 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 01:45:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 750507656, now seen corresponding path program 6 times [2024-06-28 01:45:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:50,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108482572] [2024-06-28 01:45:50,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:50,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:51,508 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 01:45:51,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:51,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108482572] [2024-06-28 01:45:51,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108482572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:51,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:51,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:51,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365336900] [2024-06-28 01:45:51,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:51,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:51,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:51,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:51,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:51,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 362 transitions, 4575 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:51,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:51,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:51,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:52,514 INFO L124 PetriNetUnfolderBase]: 1939/3703 cut-off events. [2024-06-28 01:45:52,514 INFO L125 PetriNetUnfolderBase]: For 65550/65637 co-relation queries the response was YES. [2024-06-28 01:45:52,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21339 conditions, 3703 events. 1939/3703 cut-off events. For 65550/65637 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 27005 event pairs, 611 based on Foata normal form. 89/3736 useless extension candidates. Maximal degree in co-relation 21170. Up to 3112 conditions per place. [2024-06-28 01:45:52,565 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 348 selfloop transitions, 42 changer transitions 0/400 dead transitions. [2024-06-28 01:45:52,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 400 transitions, 5557 flow [2024-06-28 01:45:52,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:52,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:52,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:45:52,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:45:52,567 INFO L175 Difference]: Start difference. First operand has 359 places, 362 transitions, 4575 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:45:52,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 400 transitions, 5557 flow [2024-06-28 01:45:53,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 400 transitions, 5470 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-28 01:45:53,077 INFO L231 Difference]: Finished difference. Result has 366 places, 362 transitions, 4577 flow [2024-06-28 01:45:53,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4577, PETRI_PLACES=366, PETRI_TRANSITIONS=362} [2024-06-28 01:45:53,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-28 01:45:53,078 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 362 transitions, 4577 flow [2024-06-28 01:45:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:53,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:53,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:45:53,078 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 01:45:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1742603636, now seen corresponding path program 7 times [2024-06-28 01:45:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:53,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112459764] [2024-06-28 01:45:53,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:53,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112459764] [2024-06-28 01:45:53,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112459764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:53,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490683081] [2024-06-28 01:45:53,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:53,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:53,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:53,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 362 transitions, 4577 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:53,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:54,697 INFO L124 PetriNetUnfolderBase]: 1973/3771 cut-off events. [2024-06-28 01:45:54,697 INFO L125 PetriNetUnfolderBase]: For 65908/65994 co-relation queries the response was YES. [2024-06-28 01:45:54,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21653 conditions, 3771 events. 1973/3771 cut-off events. For 65908/65994 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 27590 event pairs, 614 based on Foata normal form. 88/3798 useless extension candidates. Maximal degree in co-relation 21482. Up to 3160 conditions per place. [2024-06-28 01:45:54,752 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 344 selfloop transitions, 50 changer transitions 0/404 dead transitions. [2024-06-28 01:45:54,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 404 transitions, 5649 flow [2024-06-28 01:45:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:54,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:45:54,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:45:54,753 INFO L175 Difference]: Start difference. First operand has 366 places, 362 transitions, 4577 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:45:54,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 404 transitions, 5649 flow [2024-06-28 01:45:55,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 404 transitions, 5552 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:55,341 INFO L231 Difference]: Finished difference. Result has 367 places, 367 transitions, 4673 flow [2024-06-28 01:45:55,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4673, PETRI_PLACES=367, PETRI_TRANSITIONS=367} [2024-06-28 01:45:55,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 325 predicate places. [2024-06-28 01:45:55,342 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 367 transitions, 4673 flow [2024-06-28 01:45:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:55,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:55,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:45:55,342 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 01:45:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -479819124, now seen corresponding path program 8 times [2024-06-28 01:45:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451027934] [2024-06-28 01:45:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:56,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:56,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451027934] [2024-06-28 01:45:56,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451027934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:56,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:56,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:56,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272071857] [2024-06-28 01:45:56,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:56,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:56,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:56,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:56,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 367 transitions, 4673 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:56,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:56,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:56,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:57,311 INFO L124 PetriNetUnfolderBase]: 2008/3828 cut-off events. [2024-06-28 01:45:57,311 INFO L125 PetriNetUnfolderBase]: For 74859/74952 co-relation queries the response was YES. [2024-06-28 01:45:57,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 3828 events. 2008/3828 cut-off events. For 74859/74952 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 28106 event pairs, 599 based on Foata normal form. 95/3862 useless extension candidates. Maximal degree in co-relation 22227. Up to 3018 conditions per place. [2024-06-28 01:45:57,367 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 352 selfloop transitions, 48 changer transitions 0/410 dead transitions. [2024-06-28 01:45:57,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 410 transitions, 5887 flow [2024-06-28 01:45:57,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:57,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 01:45:57,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-28 01:45:57,368 INFO L175 Difference]: Start difference. First operand has 367 places, 367 transitions, 4673 flow. Second operand 11 states and 211 transitions. [2024-06-28 01:45:57,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 410 transitions, 5887 flow [2024-06-28 01:45:57,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 410 transitions, 5762 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:57,950 INFO L231 Difference]: Finished difference. Result has 370 places, 369 transitions, 4718 flow [2024-06-28 01:45:57,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4718, PETRI_PLACES=370, PETRI_TRANSITIONS=369} [2024-06-28 01:45:57,951 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 328 predicate places. [2024-06-28 01:45:57,951 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 369 transitions, 4718 flow [2024-06-28 01:45:57,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:57,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:57,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:45:57,951 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 01:45:57,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:57,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1999104146, now seen corresponding path program 9 times [2024-06-28 01:45:57,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:57,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431723554] [2024-06-28 01:45:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:57,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:58,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:58,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431723554] [2024-06-28 01:45:58,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431723554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:58,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:58,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:58,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078435697] [2024-06-28 01:45:58,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:58,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:58,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:58,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:58,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:58,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:45:58,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 369 transitions, 4718 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:58,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:58,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:45:58,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:59,870 INFO L124 PetriNetUnfolderBase]: 2024/3884 cut-off events. [2024-06-28 01:45:59,870 INFO L125 PetriNetUnfolderBase]: For 76876/76962 co-relation queries the response was YES. [2024-06-28 01:45:59,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22663 conditions, 3884 events. 2024/3884 cut-off events. For 76876/76962 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 28633 event pairs, 642 based on Foata normal form. 88/3905 useless extension candidates. Maximal degree in co-relation 22490. Up to 3249 conditions per place. [2024-06-28 01:45:59,925 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 351 selfloop transitions, 47 changer transitions 0/408 dead transitions. [2024-06-28 01:45:59,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 408 transitions, 5752 flow [2024-06-28 01:45:59,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:45:59,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:45:59,926 INFO L175 Difference]: Start difference. First operand has 370 places, 369 transitions, 4718 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:45:59,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 408 transitions, 5752 flow [2024-06-28 01:46:00,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 408 transitions, 5637 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:00,525 INFO L231 Difference]: Finished difference. Result has 374 places, 370 transitions, 4740 flow [2024-06-28 01:46:00,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4740, PETRI_PLACES=374, PETRI_TRANSITIONS=370} [2024-06-28 01:46:00,525 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 332 predicate places. [2024-06-28 01:46:00,525 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 370 transitions, 4740 flow [2024-06-28 01:46:00,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:00,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:00,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:00,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:46:00,526 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 01:46:00,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1999311536, now seen corresponding path program 10 times [2024-06-28 01:46:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:00,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187702677] [2024-06-28 01:46:00,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:00,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:01,346 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 01:46:01,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:01,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187702677] [2024-06-28 01:46:01,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187702677] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:01,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:01,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:01,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620432405] [2024-06-28 01:46:01,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:01,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:01,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:01,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 370 transitions, 4740 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:01,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:01,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:01,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:02,447 INFO L124 PetriNetUnfolderBase]: 2021/3869 cut-off events. [2024-06-28 01:46:02,448 INFO L125 PetriNetUnfolderBase]: For 69382/69470 co-relation queries the response was YES. [2024-06-28 01:46:02,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22262 conditions, 3869 events. 2021/3869 cut-off events. For 69382/69470 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 28489 event pairs, 626 based on Foata normal form. 90/3894 useless extension candidates. Maximal degree in co-relation 22087. Up to 3171 conditions per place. [2024-06-28 01:46:02,507 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 351 selfloop transitions, 48 changer transitions 0/409 dead transitions. [2024-06-28 01:46:02,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 409 transitions, 5742 flow [2024-06-28 01:46:02,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:02,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:02,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-28 01:46:02,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:46:02,508 INFO L175 Difference]: Start difference. First operand has 374 places, 370 transitions, 4740 flow. Second operand 11 states and 209 transitions. [2024-06-28 01:46:02,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 409 transitions, 5742 flow [2024-06-28 01:46:03,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 409 transitions, 5622 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:03,240 INFO L231 Difference]: Finished difference. Result has 377 places, 370 transitions, 4720 flow [2024-06-28 01:46:03,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4620, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4720, PETRI_PLACES=377, PETRI_TRANSITIONS=370} [2024-06-28 01:46:03,241 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-28 01:46:03,241 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 370 transitions, 4720 flow [2024-06-28 01:46:03,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:03,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:03,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:03,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:46:03,241 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 01:46:03,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash 16267058, now seen corresponding path program 2 times [2024-06-28 01:46:03,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:03,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602648695] [2024-06-28 01:46:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:03,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:04,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:04,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:04,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602648695] [2024-06-28 01:46:04,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602648695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:04,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:04,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:04,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185056976] [2024-06-28 01:46:04,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:04,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:04,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:04,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:04,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:04,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:04,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 370 transitions, 4720 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:04,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:04,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:05,151 INFO L124 PetriNetUnfolderBase]: 2068/4023 cut-off events. [2024-06-28 01:46:05,151 INFO L125 PetriNetUnfolderBase]: For 73053/73140 co-relation queries the response was YES. [2024-06-28 01:46:05,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23155 conditions, 4023 events. 2068/4023 cut-off events. For 73053/73140 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 30099 event pairs, 545 based on Foata normal form. 88/4030 useless extension candidates. Maximal degree in co-relation 22979. Up to 3050 conditions per place. [2024-06-28 01:46:05,204 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 295 selfloop transitions, 137 changer transitions 0/442 dead transitions. [2024-06-28 01:46:05,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 442 transitions, 6538 flow [2024-06-28 01:46:05,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:05,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:05,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 01:46:05,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021929824561403 [2024-06-28 01:46:05,206 INFO L175 Difference]: Start difference. First operand has 377 places, 370 transitions, 4720 flow. Second operand 12 states and 229 transitions. [2024-06-28 01:46:05,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 442 transitions, 6538 flow [2024-06-28 01:46:05,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 442 transitions, 6391 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 01:46:05,755 INFO L231 Difference]: Finished difference. Result has 383 places, 395 transitions, 5589 flow [2024-06-28 01:46:05,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4573, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5589, PETRI_PLACES=383, PETRI_TRANSITIONS=395} [2024-06-28 01:46:05,756 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 341 predicate places. [2024-06-28 01:46:05,756 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 395 transitions, 5589 flow [2024-06-28 01:46:05,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:05,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:05,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:05,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:46:05,756 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 01:46:05,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:05,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1087389296, now seen corresponding path program 11 times [2024-06-28 01:46:05,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:05,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093224503] [2024-06-28 01:46:05,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:05,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:06,537 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 01:46:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093224503] [2024-06-28 01:46:06,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093224503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:06,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:06,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:06,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258063600] [2024-06-28 01:46:06,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:06,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:06,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:06,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:06,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:06,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:06,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 395 transitions, 5589 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:06,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:06,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:06,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:07,717 INFO L124 PetriNetUnfolderBase]: 2094/4020 cut-off events. [2024-06-28 01:46:07,717 INFO L125 PetriNetUnfolderBase]: For 82282/82373 co-relation queries the response was YES. [2024-06-28 01:46:07,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24028 conditions, 4020 events. 2094/4020 cut-off events. For 82282/82373 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 29937 event pairs, 555 based on Foata normal form. 93/4041 useless extension candidates. Maximal degree in co-relation 23847. Up to 3331 conditions per place. [2024-06-28 01:46:07,773 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 381 selfloop transitions, 45 changer transitions 0/436 dead transitions. [2024-06-28 01:46:07,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 436 transitions, 6654 flow [2024-06-28 01:46:07,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:07,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:46:07,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:46:07,774 INFO L175 Difference]: Start difference. First operand has 383 places, 395 transitions, 5589 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:46:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 436 transitions, 6654 flow [2024-06-28 01:46:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 436 transitions, 6398 flow, removed 124 selfloop flow, removed 2 redundant places. [2024-06-28 01:46:08,354 INFO L231 Difference]: Finished difference. Result has 392 places, 397 transitions, 5474 flow [2024-06-28 01:46:08,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5474, PETRI_PLACES=392, PETRI_TRANSITIONS=397} [2024-06-28 01:46:08,355 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 350 predicate places. [2024-06-28 01:46:08,355 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 397 transitions, 5474 flow [2024-06-28 01:46:08,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:08,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:08,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:46:08,355 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 01:46:08,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:08,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1929207310, now seen corresponding path program 12 times [2024-06-28 01:46:08,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:08,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547333834] [2024-06-28 01:46:08,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:08,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:09,096 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 01:46:09,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:09,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547333834] [2024-06-28 01:46:09,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547333834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:09,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:09,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306632821] [2024-06-28 01:46:09,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:09,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:09,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:09,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:09,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:09,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:09,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 397 transitions, 5474 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:09,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:09,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:09,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:10,220 INFO L124 PetriNetUnfolderBase]: 2120/4085 cut-off events. [2024-06-28 01:46:10,220 INFO L125 PetriNetUnfolderBase]: For 81581/81667 co-relation queries the response was YES. [2024-06-28 01:46:10,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24192 conditions, 4085 events. 2120/4085 cut-off events. For 81581/81667 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 30699 event pairs, 597 based on Foata normal form. 88/4100 useless extension candidates. Maximal degree in co-relation 24009. Up to 3463 conditions per place. [2024-06-28 01:46:10,281 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 373 selfloop transitions, 53 changer transitions 0/436 dead transitions. [2024-06-28 01:46:10,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 436 transitions, 6550 flow [2024-06-28 01:46:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:46:10,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:46:10,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 218 transitions. [2024-06-28 01:46:10,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4780701754385965 [2024-06-28 01:46:10,282 INFO L175 Difference]: Start difference. First operand has 392 places, 397 transitions, 5474 flow. Second operand 12 states and 218 transitions. [2024-06-28 01:46:10,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 436 transitions, 6550 flow [2024-06-28 01:46:10,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 436 transitions, 6464 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:10,966 INFO L231 Difference]: Finished difference. Result has 399 places, 399 transitions, 5544 flow [2024-06-28 01:46:10,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5388, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5544, PETRI_PLACES=399, PETRI_TRANSITIONS=399} [2024-06-28 01:46:10,967 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 357 predicate places. [2024-06-28 01:46:10,967 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 399 transitions, 5544 flow [2024-06-28 01:46:10,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:10,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:10,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:46:10,967 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 01:46:10,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -789793630, now seen corresponding path program 13 times [2024-06-28 01:46:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:10,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502525516] [2024-06-28 01:46:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:10,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:11,741 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 01:46:11,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:11,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502525516] [2024-06-28 01:46:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502525516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:11,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538278361] [2024-06-28 01:46:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:11,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:11,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:11,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 399 transitions, 5544 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:11,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:11,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:11,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:12,845 INFO L124 PetriNetUnfolderBase]: 2146/4141 cut-off events. [2024-06-28 01:46:12,845 INFO L125 PetriNetUnfolderBase]: For 83730/83820 co-relation queries the response was YES. [2024-06-28 01:46:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24503 conditions, 4141 events. 2146/4141 cut-off events. For 83730/83820 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31181 event pairs, 591 based on Foata normal form. 92/4156 useless extension candidates. Maximal degree in co-relation 24319. Up to 3443 conditions per place. [2024-06-28 01:46:12,907 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 383 selfloop transitions, 47 changer transitions 0/440 dead transitions. [2024-06-28 01:46:12,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 440 transitions, 6636 flow [2024-06-28 01:46:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:12,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:46:12,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:46:12,908 INFO L175 Difference]: Start difference. First operand has 399 places, 399 transitions, 5544 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:46:12,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 440 transitions, 6636 flow [2024-06-28 01:46:13,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 440 transitions, 6508 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:13,629 INFO L231 Difference]: Finished difference. Result has 401 places, 401 transitions, 5562 flow [2024-06-28 01:46:13,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5416, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5562, PETRI_PLACES=401, PETRI_TRANSITIONS=401} [2024-06-28 01:46:13,630 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 359 predicate places. [2024-06-28 01:46:13,630 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 401 transitions, 5562 flow [2024-06-28 01:46:13,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:13,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:13,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:13,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:46:13,631 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 01:46:13,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:13,631 INFO L85 PathProgramCache]: Analyzing trace with hash -961649260, now seen corresponding path program 14 times [2024-06-28 01:46:13,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:13,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20765808] [2024-06-28 01:46:13,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:14,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20765808] [2024-06-28 01:46:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20765808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:14,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:14,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:14,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942063335] [2024-06-28 01:46:14,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:14,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:14,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:14,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:14,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:14,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:14,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 401 transitions, 5562 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:14,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:14,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:14,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:15,562 INFO L124 PetriNetUnfolderBase]: 2174/4207 cut-off events. [2024-06-28 01:46:15,562 INFO L125 PetriNetUnfolderBase]: For 86192/86286 co-relation queries the response was YES. [2024-06-28 01:46:15,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24840 conditions, 4207 events. 2174/4207 cut-off events. For 86192/86286 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 31828 event pairs, 583 based on Foata normal form. 96/4222 useless extension candidates. Maximal degree in co-relation 24655. Up to 3389 conditions per place. [2024-06-28 01:46:15,624 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 386 selfloop transitions, 49 changer transitions 0/445 dead transitions. [2024-06-28 01:46:15,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 445 transitions, 6696 flow [2024-06-28 01:46:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:15,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:15,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:46:15,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:46:15,625 INFO L175 Difference]: Start difference. First operand has 401 places, 401 transitions, 5562 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:46:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 445 transitions, 6696 flow [2024-06-28 01:46:16,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 445 transitions, 6574 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:16,376 INFO L231 Difference]: Finished difference. Result has 405 places, 405 transitions, 5640 flow [2024-06-28 01:46:16,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5440, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5640, PETRI_PLACES=405, PETRI_TRANSITIONS=405} [2024-06-28 01:46:16,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 363 predicate places. [2024-06-28 01:46:16,377 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 405 transitions, 5640 flow [2024-06-28 01:46:16,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:16,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:16,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:16,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:46:16,377 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 01:46:16,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 249737428, now seen corresponding path program 15 times [2024-06-28 01:46:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:16,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30086649] [2024-06-28 01:46:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:16,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:17,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:17,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:17,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30086649] [2024-06-28 01:46:17,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30086649] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:17,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:17,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:17,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574847091] [2024-06-28 01:46:17,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:17,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:17,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:17,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:17,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:17,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:17,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 405 transitions, 5640 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:17,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:17,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:17,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:18,256 INFO L124 PetriNetUnfolderBase]: 2210/4269 cut-off events. [2024-06-28 01:46:18,256 INFO L125 PetriNetUnfolderBase]: For 88517/88619 co-relation queries the response was YES. [2024-06-28 01:46:18,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25271 conditions, 4269 events. 2210/4269 cut-off events. For 88517/88619 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 32271 event pairs, 531 based on Foata normal form. 104/4287 useless extension candidates. Maximal degree in co-relation 25083. Up to 3449 conditions per place. [2024-06-28 01:46:18,321 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 373 selfloop transitions, 64 changer transitions 0/447 dead transitions. [2024-06-28 01:46:18,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 447 transitions, 6740 flow [2024-06-28 01:46:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:46:18,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:46:18,323 INFO L175 Difference]: Start difference. First operand has 405 places, 405 transitions, 5640 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:46:18,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 447 transitions, 6740 flow [2024-06-28 01:46:19,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 447 transitions, 6626 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:19,220 INFO L231 Difference]: Finished difference. Result has 409 places, 408 transitions, 5722 flow [2024-06-28 01:46:19,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5722, PETRI_PLACES=409, PETRI_TRANSITIONS=408} [2024-06-28 01:46:19,220 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 367 predicate places. [2024-06-28 01:46:19,221 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 408 transitions, 5722 flow [2024-06-28 01:46:19,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:19,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:19,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:46:19,221 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 01:46:19,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1929199374, now seen corresponding path program 3 times [2024-06-28 01:46:19,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:19,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204828222] [2024-06-28 01:46:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:19,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:20,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:20,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204828222] [2024-06-28 01:46:20,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204828222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:20,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:20,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:20,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761882816] [2024-06-28 01:46:20,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:20,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:20,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:20,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 408 transitions, 5722 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:20,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:20,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:20,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:21,609 INFO L124 PetriNetUnfolderBase]: 2230/4355 cut-off events. [2024-06-28 01:46:21,609 INFO L125 PetriNetUnfolderBase]: For 82728/82816 co-relation queries the response was YES. [2024-06-28 01:46:21,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25475 conditions, 4355 events. 2230/4355 cut-off events. For 82728/82816 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 33418 event pairs, 674 based on Foata normal form. 89/4353 useless extension candidates. Maximal degree in co-relation 25286. Up to 3640 conditions per place. [2024-06-28 01:46:21,677 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 376 selfloop transitions, 75 changer transitions 0/461 dead transitions. [2024-06-28 01:46:21,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 461 transitions, 7020 flow [2024-06-28 01:46:21,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 01:46:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 01:46:21,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 249 transitions. [2024-06-28 01:46:21,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4680451127819549 [2024-06-28 01:46:21,679 INFO L175 Difference]: Start difference. First operand has 409 places, 408 transitions, 5722 flow. Second operand 14 states and 249 transitions. [2024-06-28 01:46:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 461 transitions, 7020 flow [2024-06-28 01:46:22,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 461 transitions, 6794 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:22,403 INFO L231 Difference]: Finished difference. Result has 416 places, 420 transitions, 5886 flow [2024-06-28 01:46:22,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5530, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5886, PETRI_PLACES=416, PETRI_TRANSITIONS=420} [2024-06-28 01:46:22,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-28 01:46:22,404 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 420 transitions, 5886 flow [2024-06-28 01:46:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:22,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:22,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:22,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:46:22,404 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:46:22,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:22,405 INFO L85 PathProgramCache]: Analyzing trace with hash -579696752, now seen corresponding path program 16 times [2024-06-28 01:46:22,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:22,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012290157] [2024-06-28 01:46:22,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:22,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:23,297 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 01:46:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:23,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012290157] [2024-06-28 01:46:23,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012290157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:23,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:23,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145195545] [2024-06-28 01:46:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:23,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:23,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:23,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:23,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:23,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 420 transitions, 5886 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:23,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:23,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:23,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:24,594 INFO L124 PetriNetUnfolderBase]: 2246/4348 cut-off events. [2024-06-28 01:46:24,595 INFO L125 PetriNetUnfolderBase]: For 86168/86270 co-relation queries the response was YES. [2024-06-28 01:46:24,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25505 conditions, 4348 events. 2246/4348 cut-off events. For 86168/86270 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 33095 event pairs, 522 based on Foata normal form. 104/4361 useless extension candidates. Maximal degree in co-relation 25313. Up to 3279 conditions per place. [2024-06-28 01:46:24,657 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 383 selfloop transitions, 63 changer transitions 0/456 dead transitions. [2024-06-28 01:46:24,657 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 456 transitions, 6984 flow [2024-06-28 01:46:24,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-28 01:46:24,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-28 01:46:24,658 INFO L175 Difference]: Start difference. First operand has 416 places, 420 transitions, 5886 flow. Second operand 10 states and 186 transitions. [2024-06-28 01:46:24,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 456 transitions, 6984 flow [2024-06-28 01:46:25,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 456 transitions, 6819 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:25,374 INFO L231 Difference]: Finished difference. Result has 416 places, 421 transitions, 5909 flow [2024-06-28 01:46:25,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5721, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5909, PETRI_PLACES=416, PETRI_TRANSITIONS=421} [2024-06-28 01:46:25,377 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 374 predicate places. [2024-06-28 01:46:25,377 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 421 transitions, 5909 flow [2024-06-28 01:46:25,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:25,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:25,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:25,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:46:25,377 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 01:46:25,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:25,378 INFO L85 PathProgramCache]: Analyzing trace with hash 749245682, now seen corresponding path program 17 times [2024-06-28 01:46:25,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:25,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084087933] [2024-06-28 01:46:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:25,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:26,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:26,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084087933] [2024-06-28 01:46:26,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084087933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:26,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:26,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:26,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175051511] [2024-06-28 01:46:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:26,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:26,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:26,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:26,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 421 transitions, 5909 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:26,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:26,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:26,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:27,638 INFO L124 PetriNetUnfolderBase]: 2287/4491 cut-off events. [2024-06-28 01:46:27,639 INFO L125 PetriNetUnfolderBase]: For 102217/102313 co-relation queries the response was YES. [2024-06-28 01:46:27,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 4491 events. 2287/4491 cut-off events. For 102217/102313 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 34809 event pairs, 577 based on Foata normal form. 98/4484 useless extension candidates. Maximal degree in co-relation 26670. Up to 3214 conditions per place. [2024-06-28 01:46:27,700 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 361 selfloop transitions, 94 changer transitions 0/465 dead transitions. [2024-06-28 01:46:27,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 465 transitions, 7382 flow [2024-06-28 01:46:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:27,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:46:27,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-28 01:46:27,703 INFO L175 Difference]: Start difference. First operand has 416 places, 421 transitions, 5909 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:46:27,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 465 transitions, 7382 flow [2024-06-28 01:46:28,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 465 transitions, 7198 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:28,667 INFO L231 Difference]: Finished difference. Result has 419 places, 427 transitions, 6201 flow [2024-06-28 01:46:28,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5749, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6201, PETRI_PLACES=419, PETRI_TRANSITIONS=427} [2024-06-28 01:46:28,668 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-28 01:46:28,668 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 427 transitions, 6201 flow [2024-06-28 01:46:28,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:28,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:28,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:46:28,669 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 01:46:28,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:28,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1556489034, now seen corresponding path program 18 times [2024-06-28 01:46:28,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:28,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88055026] [2024-06-28 01:46:28,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:28,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:28,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:29,511 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 01:46:29,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:29,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88055026] [2024-06-28 01:46:29,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88055026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:29,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:29,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964037437] [2024-06-28 01:46:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:29,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:29,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:29,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:29,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 427 transitions, 6201 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:29,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:29,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:29,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:30,946 INFO L124 PetriNetUnfolderBase]: 2303/4515 cut-off events. [2024-06-28 01:46:30,946 INFO L125 PetriNetUnfolderBase]: For 98448/98542 co-relation queries the response was YES. [2024-06-28 01:46:30,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27156 conditions, 4515 events. 2303/4515 cut-off events. For 98448/98542 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 34940 event pairs, 631 based on Foata normal form. 96/4508 useless extension candidates. Maximal degree in co-relation 26961. Up to 3477 conditions per place. [2024-06-28 01:46:31,009 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 359 selfloop transitions, 96 changer transitions 0/465 dead transitions. [2024-06-28 01:46:31,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 465 transitions, 7493 flow [2024-06-28 01:46:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:31,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:31,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 191 transitions. [2024-06-28 01:46:31,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026315789473684 [2024-06-28 01:46:31,010 INFO L175 Difference]: Start difference. First operand has 419 places, 427 transitions, 6201 flow. Second operand 10 states and 191 transitions. [2024-06-28 01:46:31,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 465 transitions, 7493 flow [2024-06-28 01:46:31,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 465 transitions, 7287 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-28 01:46:31,866 INFO L231 Difference]: Finished difference. Result has 424 places, 428 transitions, 6241 flow [2024-06-28 01:46:31,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6011, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6241, PETRI_PLACES=424, PETRI_TRANSITIONS=428} [2024-06-28 01:46:31,867 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 382 predicate places. [2024-06-28 01:46:31,867 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 428 transitions, 6241 flow [2024-06-28 01:46:31,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:31,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:31,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:31,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:46:31,868 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 01:46:31,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:31,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2094812208, now seen corresponding path program 19 times [2024-06-28 01:46:31,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:31,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112898886] [2024-06-28 01:46:31,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:31,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:32,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:32,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:32,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112898886] [2024-06-28 01:46:32,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112898886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:32,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:32,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:32,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712586035] [2024-06-28 01:46:32,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:32,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:32,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:32,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:32,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:32,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:32,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 428 transitions, 6241 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:32,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:32,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:32,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:34,140 INFO L124 PetriNetUnfolderBase]: 2304/4516 cut-off events. [2024-06-28 01:46:34,140 INFO L125 PetriNetUnfolderBase]: For 89080/89166 co-relation queries the response was YES. [2024-06-28 01:46:34,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26894 conditions, 4516 events. 2304/4516 cut-off events. For 89080/89166 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 34968 event pairs, 680 based on Foata normal form. 88/4505 useless extension candidates. Maximal degree in co-relation 26697. Up to 3694 conditions per place. [2024-06-28 01:46:34,207 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 397 selfloop transitions, 56 changer transitions 0/463 dead transitions. [2024-06-28 01:46:34,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 463 transitions, 7351 flow [2024-06-28 01:46:34,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:46:34,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921052631578947 [2024-06-28 01:46:34,208 INFO L175 Difference]: Start difference. First operand has 424 places, 428 transitions, 6241 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:46:34,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 463 transitions, 7351 flow [2024-06-28 01:46:35,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 463 transitions, 7057 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:35,012 INFO L231 Difference]: Finished difference. Result has 425 places, 429 transitions, 6099 flow [2024-06-28 01:46:35,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5967, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6099, PETRI_PLACES=425, PETRI_TRANSITIONS=429} [2024-06-28 01:46:35,012 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 383 predicate places. [2024-06-28 01:46:35,012 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 429 transitions, 6099 flow [2024-06-28 01:46:35,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:35,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:35,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:35,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:46:35,013 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 01:46:35,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1787569666, now seen corresponding path program 20 times [2024-06-28 01:46:35,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:35,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063439830] [2024-06-28 01:46:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:35,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:35,883 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 01:46:35,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:35,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063439830] [2024-06-28 01:46:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063439830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:35,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:35,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716128829] [2024-06-28 01:46:35,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:35,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:35,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:35,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:35,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:35,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 429 transitions, 6099 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:35,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:35,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:35,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:37,158 INFO L124 PetriNetUnfolderBase]: 2331/4551 cut-off events. [2024-06-28 01:46:37,158 INFO L125 PetriNetUnfolderBase]: For 88997/89092 co-relation queries the response was YES. [2024-06-28 01:46:37,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26943 conditions, 4551 events. 2331/4551 cut-off events. For 88997/89092 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 35188 event pairs, 716 based on Foata normal form. 97/4549 useless extension candidates. Maximal degree in co-relation 26746. Up to 3682 conditions per place. [2024-06-28 01:46:37,231 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 394 selfloop transitions, 63 changer transitions 0/467 dead transitions. [2024-06-28 01:46:37,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 467 transitions, 7271 flow [2024-06-28 01:46:37,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:37,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-28 01:46:37,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49473684210526314 [2024-06-28 01:46:37,232 INFO L175 Difference]: Start difference. First operand has 425 places, 429 transitions, 6099 flow. Second operand 10 states and 188 transitions. [2024-06-28 01:46:37,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 467 transitions, 7271 flow [2024-06-28 01:46:38,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 467 transitions, 7167 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:38,158 INFO L231 Difference]: Finished difference. Result has 428 places, 433 transitions, 6224 flow [2024-06-28 01:46:38,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6224, PETRI_PLACES=428, PETRI_TRANSITIONS=433} [2024-06-28 01:46:38,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-28 01:46:38,159 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 433 transitions, 6224 flow [2024-06-28 01:46:38,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:38,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:38,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:38,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:46:38,159 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 01:46:38,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:38,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1780419826, now seen corresponding path program 21 times [2024-06-28 01:46:38,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:38,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216290185] [2024-06-28 01:46:38,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:38,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:38,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:38,881 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 01:46:38,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:38,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216290185] [2024-06-28 01:46:38,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216290185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:38,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:38,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:38,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126056749] [2024-06-28 01:46:38,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:38,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:38,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:38,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:38,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:38,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 433 transitions, 6224 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:38,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:38,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:38,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:40,203 INFO L124 PetriNetUnfolderBase]: 2358/4606 cut-off events. [2024-06-28 01:46:40,203 INFO L125 PetriNetUnfolderBase]: For 93722/93817 co-relation queries the response was YES. [2024-06-28 01:46:40,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27626 conditions, 4606 events. 2358/4606 cut-off events. For 93722/93817 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 35747 event pairs, 720 based on Foata normal form. 97/4600 useless extension candidates. Maximal degree in co-relation 27427. Up to 3722 conditions per place. [2024-06-28 01:46:40,276 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 400 selfloop transitions, 61 changer transitions 0/471 dead transitions. [2024-06-28 01:46:40,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 471 transitions, 7409 flow [2024-06-28 01:46:40,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:40,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:46:40,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:46:40,277 INFO L175 Difference]: Start difference. First operand has 428 places, 433 transitions, 6224 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:46:40,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 471 transitions, 7409 flow [2024-06-28 01:46:41,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 471 transitions, 7274 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:41,153 INFO L231 Difference]: Finished difference. Result has 432 places, 436 transitions, 6289 flow [2024-06-28 01:46:41,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6093, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6289, PETRI_PLACES=432, PETRI_TRANSITIONS=436} [2024-06-28 01:46:41,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-28 01:46:41,154 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 436 transitions, 6289 flow [2024-06-28 01:46:41,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:41,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:41,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:41,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:46:41,155 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 01:46:41,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:41,155 INFO L85 PathProgramCache]: Analyzing trace with hash -450985676, now seen corresponding path program 22 times [2024-06-28 01:46:41,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:41,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638549258] [2024-06-28 01:46:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:41,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:41,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:41,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638549258] [2024-06-28 01:46:41,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638549258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:41,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:41,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:41,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112966558] [2024-06-28 01:46:41,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:41,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:41,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:41,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:41,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:42,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:42,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 436 transitions, 6289 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:42,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:42,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:42,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:43,413 INFO L124 PetriNetUnfolderBase]: 2420/4731 cut-off events. [2024-06-28 01:46:43,413 INFO L125 PetriNetUnfolderBase]: For 104246/104346 co-relation queries the response was YES. [2024-06-28 01:46:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28568 conditions, 4731 events. 2420/4731 cut-off events. For 104246/104346 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 36871 event pairs, 750 based on Foata normal form. 102/4725 useless extension candidates. Maximal degree in co-relation 28368. Up to 3856 conditions per place. [2024-06-28 01:46:43,488 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 419 selfloop transitions, 51 changer transitions 0/480 dead transitions. [2024-06-28 01:46:43,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 480 transitions, 7741 flow [2024-06-28 01:46:43,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:43,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:43,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-28 01:46:43,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49282296650717705 [2024-06-28 01:46:43,490 INFO L175 Difference]: Start difference. First operand has 432 places, 436 transitions, 6289 flow. Second operand 11 states and 206 transitions. [2024-06-28 01:46:43,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 480 transitions, 7741 flow [2024-06-28 01:46:44,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 480 transitions, 7601 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:44,359 INFO L231 Difference]: Finished difference. Result has 437 places, 444 transitions, 6449 flow [2024-06-28 01:46:44,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6153, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6449, PETRI_PLACES=437, PETRI_TRANSITIONS=444} [2024-06-28 01:46:44,359 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-28 01:46:44,360 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 444 transitions, 6449 flow [2024-06-28 01:46:44,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:44,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:44,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:44,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:46:44,360 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 01:46:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1780212436, now seen corresponding path program 23 times [2024-06-28 01:46:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:44,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161060869] [2024-06-28 01:46:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:45,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:45,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161060869] [2024-06-28 01:46:45,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161060869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:45,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:45,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:45,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057859517] [2024-06-28 01:46:45,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:45,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:45,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:45,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:45,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 444 transitions, 6449 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:45,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:45,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:46,599 INFO L124 PetriNetUnfolderBase]: 2436/4817 cut-off events. [2024-06-28 01:46:46,599 INFO L125 PetriNetUnfolderBase]: For 105032/105124 co-relation queries the response was YES. [2024-06-28 01:46:46,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28899 conditions, 4817 events. 2436/4817 cut-off events. For 105032/105124 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 37984 event pairs, 598 based on Foata normal form. 94/4790 useless extension candidates. Maximal degree in co-relation 28698. Up to 3596 conditions per place. [2024-06-28 01:46:46,670 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 377 selfloop transitions, 94 changer transitions 0/481 dead transitions. [2024-06-28 01:46:46,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 481 transitions, 7633 flow [2024-06-28 01:46:46,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:46,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:46:46,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-28 01:46:46,672 INFO L175 Difference]: Start difference. First operand has 437 places, 444 transitions, 6449 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:46:46,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 481 transitions, 7633 flow [2024-06-28 01:46:47,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 481 transitions, 7554 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 01:46:47,494 INFO L231 Difference]: Finished difference. Result has 443 places, 445 transitions, 6612 flow [2024-06-28 01:46:47,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6370, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6612, PETRI_PLACES=443, PETRI_TRANSITIONS=445} [2024-06-28 01:46:47,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 401 predicate places. [2024-06-28 01:46:47,494 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 445 transitions, 6612 flow [2024-06-28 01:46:47,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:47,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:47,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:47,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:46:47,495 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 01:46:47,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:47,495 INFO L85 PathProgramCache]: Analyzing trace with hash -989548528, now seen corresponding path program 24 times [2024-06-28 01:46:47,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:47,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821785476] [2024-06-28 01:46:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:47,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:48,242 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 01:46:48,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:48,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821785476] [2024-06-28 01:46:48,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821785476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:48,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:48,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:48,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716960051] [2024-06-28 01:46:48,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:48,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:48,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:48,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:48,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:48,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:48,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 445 transitions, 6612 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:48,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:48,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:48,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:49,795 INFO L124 PetriNetUnfolderBase]: 2433/4776 cut-off events. [2024-06-28 01:46:49,795 INFO L125 PetriNetUnfolderBase]: For 98152/98249 co-relation queries the response was YES. [2024-06-28 01:46:49,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28783 conditions, 4776 events. 2433/4776 cut-off events. For 98152/98249 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 37356 event pairs, 748 based on Foata normal form. 99/4764 useless extension candidates. Maximal degree in co-relation 28580. Up to 3845 conditions per place. [2024-06-28 01:46:49,862 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 406 selfloop transitions, 64 changer transitions 0/480 dead transitions. [2024-06-28 01:46:49,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 480 transitions, 7746 flow [2024-06-28 01:46:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:49,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:46:49,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:46:49,863 INFO L175 Difference]: Start difference. First operand has 443 places, 445 transitions, 6612 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:46:49,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 480 transitions, 7746 flow [2024-06-28 01:46:50,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 480 transitions, 7492 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:50,701 INFO L231 Difference]: Finished difference. Result has 444 places, 445 transitions, 6494 flow [2024-06-28 01:46:50,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6358, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6494, PETRI_PLACES=444, PETRI_TRANSITIONS=445} [2024-06-28 01:46:50,702 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-28 01:46:50,702 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 445 transitions, 6494 flow [2024-06-28 01:46:50,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:50,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:50,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:50,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:46:50,702 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 01:46:50,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:50,703 INFO L85 PathProgramCache]: Analyzing trace with hash -995262448, now seen corresponding path program 25 times [2024-06-28 01:46:50,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:50,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794940178] [2024-06-28 01:46:50,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:50,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:51,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:51,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794940178] [2024-06-28 01:46:51,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794940178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:51,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:51,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398793358] [2024-06-28 01:46:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:51,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:51,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:51,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:51,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:51,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 445 transitions, 6494 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:51,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:51,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:51,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:52,923 INFO L124 PetriNetUnfolderBase]: 2449/4766 cut-off events. [2024-06-28 01:46:52,923 INFO L125 PetriNetUnfolderBase]: For 96579/96690 co-relation queries the response was YES. [2024-06-28 01:46:52,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28535 conditions, 4766 events. 2449/4766 cut-off events. For 96579/96690 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 37070 event pairs, 697 based on Foata normal form. 113/4774 useless extension candidates. Maximal degree in co-relation 28332. Up to 3435 conditions per place. [2024-06-28 01:46:52,999 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 400 selfloop transitions, 73 changer transitions 0/483 dead transitions. [2024-06-28 01:46:52,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 483 transitions, 7686 flow [2024-06-28 01:46:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:52,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:46:53,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-28 01:46:53,000 INFO L175 Difference]: Start difference. First operand has 444 places, 445 transitions, 6494 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:46:53,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 483 transitions, 7686 flow [2024-06-28 01:46:54,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 483 transitions, 7567 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:54,059 INFO L231 Difference]: Finished difference. Result has 446 places, 446 transitions, 6577 flow [2024-06-28 01:46:54,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6375, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6577, PETRI_PLACES=446, PETRI_TRANSITIONS=446} [2024-06-28 01:46:54,059 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 404 predicate places. [2024-06-28 01:46:54,059 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 446 transitions, 6577 flow [2024-06-28 01:46:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:54,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:54,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:46:54,060 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 01:46:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2094804272, now seen corresponding path program 4 times [2024-06-28 01:46:54,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089154564] [2024-06-28 01:46:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089154564] [2024-06-28 01:46:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089154564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:55,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:55,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:55,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703863654] [2024-06-28 01:46:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:55,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:55,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:55,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:55,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 446 transitions, 6577 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:55,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:56,634 INFO L124 PetriNetUnfolderBase]: 2469/4868 cut-off events. [2024-06-28 01:46:56,634 INFO L125 PetriNetUnfolderBase]: For 95705/95794 co-relation queries the response was YES. [2024-06-28 01:46:56,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29174 conditions, 4868 events. 2469/4868 cut-off events. For 95705/95794 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 38393 event pairs, 730 based on Foata normal form. 90/4841 useless extension candidates. Maximal degree in co-relation 28971. Up to 3977 conditions per place. [2024-06-28 01:46:56,716 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 414 selfloop transitions, 68 changer transitions 0/492 dead transitions. [2024-06-28 01:46:56,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 492 transitions, 7867 flow [2024-06-28 01:46:56,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:56,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:46:56,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:46:56,718 INFO L175 Difference]: Start difference. First operand has 446 places, 446 transitions, 6577 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:46:56,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 492 transitions, 7867 flow [2024-06-28 01:46:57,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 492 transitions, 7677 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:57,781 INFO L231 Difference]: Finished difference. Result has 448 places, 454 transitions, 6673 flow [2024-06-28 01:46:57,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6387, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6673, PETRI_PLACES=448, PETRI_TRANSITIONS=454} [2024-06-28 01:46:57,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 406 predicate places. [2024-06-28 01:46:57,781 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 454 transitions, 6673 flow [2024-06-28 01:46:57,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:57,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:57,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:57,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:46:57,782 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 01:46:57,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -450770350, now seen corresponding path program 5 times [2024-06-28 01:46:57,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:57,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764590590] [2024-06-28 01:46:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:57,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:58,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764590590] [2024-06-28 01:46:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764590590] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304859236] [2024-06-28 01:46:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:58,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:58,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:46:58,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 454 transitions, 6673 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:58,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:58,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:46:58,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:00,429 INFO L124 PetriNetUnfolderBase]: 2526/5047 cut-off events. [2024-06-28 01:47:00,430 INFO L125 PetriNetUnfolderBase]: For 99855/99941 co-relation queries the response was YES. [2024-06-28 01:47:00,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29947 conditions, 5047 events. 2526/5047 cut-off events. For 99855/99941 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 40358 event pairs, 635 based on Foata normal form. 87/4996 useless extension candidates. Maximal degree in co-relation 29744. Up to 3735 conditions per place. [2024-06-28 01:47:00,512 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 401 selfloop transitions, 99 changer transitions 0/510 dead transitions. [2024-06-28 01:47:00,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 510 transitions, 8295 flow [2024-06-28 01:47:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-28 01:47:00,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-28 01:47:00,514 INFO L175 Difference]: Start difference. First operand has 448 places, 454 transitions, 6673 flow. Second operand 12 states and 231 transitions. [2024-06-28 01:47:00,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 510 transitions, 8295 flow [2024-06-28 01:47:01,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 510 transitions, 8119 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:01,479 INFO L231 Difference]: Finished difference. Result has 452 places, 465 transitions, 6948 flow [2024-06-28 01:47:01,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6497, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6948, PETRI_PLACES=452, PETRI_TRANSITIONS=465} [2024-06-28 01:47:01,479 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 410 predicate places. [2024-06-28 01:47:01,479 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 465 transitions, 6948 flow [2024-06-28 01:47:01,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:01,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:01,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:47:01,480 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 01:47:01,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash 2036928272, now seen corresponding path program 6 times [2024-06-28 01:47:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:01,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587591450] [2024-06-28 01:47:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:01,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:02,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:02,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587591450] [2024-06-28 01:47:02,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587591450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:02,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:02,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:02,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398357574] [2024-06-28 01:47:02,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:02,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:02,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:02,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:02,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:02,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 465 transitions, 6948 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:02,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:02,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:02,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:04,013 INFO L124 PetriNetUnfolderBase]: 2592/5085 cut-off events. [2024-06-28 01:47:04,014 INFO L125 PetriNetUnfolderBase]: For 103184/103279 co-relation queries the response was YES. [2024-06-28 01:47:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31002 conditions, 5085 events. 2592/5085 cut-off events. For 103184/103279 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40160 event pairs, 763 based on Foata normal form. 96/5054 useless extension candidates. Maximal degree in co-relation 30797. Up to 4005 conditions per place. [2024-06-28 01:47:04,098 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 427 selfloop transitions, 78 changer transitions 0/515 dead transitions. [2024-06-28 01:47:04,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 515 transitions, 8374 flow [2024-06-28 01:47:04,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:04,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:04,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:47:04,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:47:04,100 INFO L175 Difference]: Start difference. First operand has 452 places, 465 transitions, 6948 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:47:04,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 515 transitions, 8374 flow [2024-06-28 01:47:05,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 515 transitions, 8233 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-28 01:47:05,146 INFO L231 Difference]: Finished difference. Result has 458 places, 477 transitions, 7175 flow [2024-06-28 01:47:05,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6827, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7175, PETRI_PLACES=458, PETRI_TRANSITIONS=477} [2024-06-28 01:47:05,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 416 predicate places. [2024-06-28 01:47:05,146 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 477 transitions, 7175 flow [2024-06-28 01:47:05,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:05,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:05,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:05,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:47:05,147 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 01:47:05,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:05,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2046125042, now seen corresponding path program 7 times [2024-06-28 01:47:05,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:05,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141860369] [2024-06-28 01:47:05,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:05,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:06,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:06,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141860369] [2024-06-28 01:47:06,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141860369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:06,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:06,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311523995] [2024-06-28 01:47:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:06,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:06,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:06,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 477 transitions, 7175 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:06,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:06,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:07,841 INFO L124 PetriNetUnfolderBase]: 2614/5127 cut-off events. [2024-06-28 01:47:07,841 INFO L125 PetriNetUnfolderBase]: For 103964/104059 co-relation queries the response was YES. [2024-06-28 01:47:07,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31462 conditions, 5127 events. 2614/5127 cut-off events. For 103964/104059 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 40569 event pairs, 754 based on Foata normal form. 96/5100 useless extension candidates. Maximal degree in co-relation 31255. Up to 4039 conditions per place. [2024-06-28 01:47:07,927 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 425 selfloop transitions, 84 changer transitions 0/519 dead transitions. [2024-06-28 01:47:07,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 519 transitions, 8503 flow [2024-06-28 01:47:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:07,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-06-28 01:47:07,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49521531100478466 [2024-06-28 01:47:07,928 INFO L175 Difference]: Start difference. First operand has 458 places, 477 transitions, 7175 flow. Second operand 11 states and 207 transitions. [2024-06-28 01:47:07,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 519 transitions, 8503 flow [2024-06-28 01:47:08,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 519 transitions, 8344 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:08,796 INFO L231 Difference]: Finished difference. Result has 462 places, 481 transitions, 7290 flow [2024-06-28 01:47:08,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7016, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7290, PETRI_PLACES=462, PETRI_TRANSITIONS=481} [2024-06-28 01:47:08,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 420 predicate places. [2024-06-28 01:47:08,797 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 481 transitions, 7290 flow [2024-06-28 01:47:08,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:08,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:08,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:08,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:47:08,798 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 01:47:08,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:08,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1908907048, now seen corresponding path program 8 times [2024-06-28 01:47:08,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:08,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453813884] [2024-06-28 01:47:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:08,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:09,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:09,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453813884] [2024-06-28 01:47:09,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453813884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:09,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:09,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:09,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135183816] [2024-06-28 01:47:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:09,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:09,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:09,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:09,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 481 transitions, 7290 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:09,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:09,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:11,429 INFO L124 PetriNetUnfolderBase]: 2636/5205 cut-off events. [2024-06-28 01:47:11,429 INFO L125 PetriNetUnfolderBase]: For 108798/108888 co-relation queries the response was YES. [2024-06-28 01:47:11,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32083 conditions, 5205 events. 2636/5205 cut-off events. For 108798/108888 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 41525 event pairs, 661 based on Foata normal form. 91/5167 useless extension candidates. Maximal degree in co-relation 31876. Up to 3654 conditions per place. [2024-06-28 01:47:11,516 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 288 selfloop transitions, 239 changer transitions 0/537 dead transitions. [2024-06-28 01:47:11,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 537 transitions, 9206 flow [2024-06-28 01:47:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:11,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 243 transitions. [2024-06-28 01:47:11,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49190283400809715 [2024-06-28 01:47:11,517 INFO L175 Difference]: Start difference. First operand has 462 places, 481 transitions, 7290 flow. Second operand 13 states and 243 transitions. [2024-06-28 01:47:11,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 537 transitions, 9206 flow [2024-06-28 01:47:12,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 537 transitions, 8980 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:12,594 INFO L231 Difference]: Finished difference. Result has 470 places, 493 transitions, 8251 flow [2024-06-28 01:47:12,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7064, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8251, PETRI_PLACES=470, PETRI_TRANSITIONS=493} [2024-06-28 01:47:12,594 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 428 predicate places. [2024-06-28 01:47:12,595 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 493 transitions, 8251 flow [2024-06-28 01:47:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:12,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:12,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:12,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:47:12,595 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 01:47:12,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1508174614, now seen corresponding path program 9 times [2024-06-28 01:47:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449013424] [2024-06-28 01:47:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:12,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:13,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:13,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:13,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449013424] [2024-06-28 01:47:13,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449013424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:13,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:13,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:13,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614168926] [2024-06-28 01:47:13,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:13,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:13,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:13,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:13,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:13,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:13,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 493 transitions, 8251 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:13,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:13,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:15,314 INFO L124 PetriNetUnfolderBase]: 2634/5166 cut-off events. [2024-06-28 01:47:15,315 INFO L125 PetriNetUnfolderBase]: For 110308/110405 co-relation queries the response was YES. [2024-06-28 01:47:15,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32986 conditions, 5166 events. 2634/5166 cut-off events. For 110308/110405 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 40996 event pairs, 767 based on Foata normal form. 98/5137 useless extension candidates. Maximal degree in co-relation 32774. Up to 4072 conditions per place. [2024-06-28 01:47:15,398 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 447 selfloop transitions, 75 changer transitions 0/532 dead transitions. [2024-06-28 01:47:15,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 532 transitions, 9519 flow [2024-06-28 01:47:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:15,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:47:15,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:47:15,399 INFO L175 Difference]: Start difference. First operand has 470 places, 493 transitions, 8251 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:47:15,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 532 transitions, 9519 flow [2024-06-28 01:47:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 532 transitions, 9099 flow, removed 182 selfloop flow, removed 6 redundant places. [2024-06-28 01:47:16,609 INFO L231 Difference]: Finished difference. Result has 475 places, 493 transitions, 7989 flow [2024-06-28 01:47:16,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7831, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7989, PETRI_PLACES=475, PETRI_TRANSITIONS=493} [2024-06-28 01:47:16,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-28 01:47:16,610 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 493 transitions, 7989 flow [2024-06-28 01:47:16,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:16,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:16,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:16,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:47:16,610 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 01:47:16,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:16,611 INFO L85 PathProgramCache]: Analyzing trace with hash -519246768, now seen corresponding path program 26 times [2024-06-28 01:47:16,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:16,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805065696] [2024-06-28 01:47:16,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:16,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:17,481 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 01:47:17,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:17,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805065696] [2024-06-28 01:47:17,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805065696] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:17,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:17,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:17,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274239926] [2024-06-28 01:47:17,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:17,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:17,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:17,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:17,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:17,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 493 transitions, 7989 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:17,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:17,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:18,960 INFO L124 PetriNetUnfolderBase]: 2661/5169 cut-off events. [2024-06-28 01:47:18,960 INFO L125 PetriNetUnfolderBase]: For 109259/109355 co-relation queries the response was YES. [2024-06-28 01:47:19,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32818 conditions, 5169 events. 2661/5169 cut-off events. For 109259/109355 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 40772 event pairs, 620 based on Foata normal form. 98/5164 useless extension candidates. Maximal degree in co-relation 32605. Up to 4069 conditions per place. [2024-06-28 01:47:19,047 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 454 selfloop transitions, 70 changer transitions 0/534 dead transitions. [2024-06-28 01:47:19,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 534 transitions, 9331 flow [2024-06-28 01:47:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:19,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:19,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-28 01:47:19,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2024-06-28 01:47:19,049 INFO L175 Difference]: Start difference. First operand has 475 places, 493 transitions, 7989 flow. Second operand 10 states and 194 transitions. [2024-06-28 01:47:19,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 534 transitions, 9331 flow [2024-06-28 01:47:20,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 534 transitions, 9148 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:20,269 INFO L231 Difference]: Finished difference. Result has 477 places, 497 transitions, 8029 flow [2024-06-28 01:47:20,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7806, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8029, PETRI_PLACES=477, PETRI_TRANSITIONS=497} [2024-06-28 01:47:20,269 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 435 predicate places. [2024-06-28 01:47:20,269 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 497 transitions, 8029 flow [2024-06-28 01:47:20,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:20,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:20,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:20,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:47:20,270 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 01:47:20,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash -775747278, now seen corresponding path program 27 times [2024-06-28 01:47:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:20,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310123188] [2024-06-28 01:47:20,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:20,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:20,999 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 01:47:20,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:20,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310123188] [2024-06-28 01:47:20,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310123188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:20,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:20,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:21,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337949019] [2024-06-28 01:47:21,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:21,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:21,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:21,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 497 transitions, 8029 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:21,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:21,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:21,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:22,578 INFO L124 PetriNetUnfolderBase]: 2688/5227 cut-off events. [2024-06-28 01:47:22,578 INFO L125 PetriNetUnfolderBase]: For 114580/114676 co-relation queries the response was YES. [2024-06-28 01:47:22,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33276 conditions, 5227 events. 2688/5227 cut-off events. For 114580/114676 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 41365 event pairs, 620 based on Foata normal form. 98/5219 useless extension candidates. Maximal degree in co-relation 33061. Up to 4109 conditions per place. [2024-06-28 01:47:22,668 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 457 selfloop transitions, 71 changer transitions 0/538 dead transitions. [2024-06-28 01:47:22,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 538 transitions, 9386 flow [2024-06-28 01:47:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:22,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:22,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 01:47:22,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-28 01:47:22,669 INFO L175 Difference]: Start difference. First operand has 477 places, 497 transitions, 8029 flow. Second operand 10 states and 196 transitions. [2024-06-28 01:47:22,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 538 transitions, 9386 flow [2024-06-28 01:47:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 538 transitions, 9198 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:23,654 INFO L231 Difference]: Finished difference. Result has 480 places, 500 transitions, 8060 flow [2024-06-28 01:47:23,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7845, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8060, PETRI_PLACES=480, PETRI_TRANSITIONS=500} [2024-06-28 01:47:23,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-28 01:47:23,655 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 500 transitions, 8060 flow [2024-06-28 01:47:23,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:23,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:23,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:47:23,655 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 01:47:23,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1737081776, now seen corresponding path program 28 times [2024-06-28 01:47:23,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:23,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008278978] [2024-06-28 01:47:23,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:23,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:24,530 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 01:47:24,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:24,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008278978] [2024-06-28 01:47:24,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008278978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:24,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:24,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:24,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171786900] [2024-06-28 01:47:24,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:24,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:24,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:24,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:24,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:24,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:24,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 500 transitions, 8060 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:24,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:24,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:24,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:26,035 INFO L124 PetriNetUnfolderBase]: 2704/5204 cut-off events. [2024-06-28 01:47:26,035 INFO L125 PetriNetUnfolderBase]: For 115504/115602 co-relation queries the response was YES. [2024-06-28 01:47:26,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33342 conditions, 5204 events. 2704/5204 cut-off events. For 115504/115602 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 40845 event pairs, 596 based on Foata normal form. 100/5212 useless extension candidates. Maximal degree in co-relation 33126. Up to 4137 conditions per place. [2024-06-28 01:47:26,127 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 438 selfloop transitions, 89 changer transitions 0/537 dead transitions. [2024-06-28 01:47:26,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 537 transitions, 9388 flow [2024-06-28 01:47:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 190 transitions. [2024-06-28 01:47:26,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 01:47:26,129 INFO L175 Difference]: Start difference. First operand has 480 places, 500 transitions, 8060 flow. Second operand 10 states and 190 transitions. [2024-06-28 01:47:26,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 537 transitions, 9388 flow [2024-06-28 01:47:27,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 537 transitions, 9209 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-28 01:47:27,261 INFO L231 Difference]: Finished difference. Result has 485 places, 502 transitions, 8133 flow [2024-06-28 01:47:27,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7881, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8133, PETRI_PLACES=485, PETRI_TRANSITIONS=502} [2024-06-28 01:47:27,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 443 predicate places. [2024-06-28 01:47:27,262 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 502 transitions, 8133 flow [2024-06-28 01:47:27,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:27,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:27,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:27,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:47:27,262 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 01:47:27,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:27,263 INFO L85 PathProgramCache]: Analyzing trace with hash -775954668, now seen corresponding path program 29 times [2024-06-28 01:47:27,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:27,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140595080] [2024-06-28 01:47:27,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:27,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:27,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:28,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:28,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140595080] [2024-06-28 01:47:28,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140595080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:28,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:28,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:28,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977847842] [2024-06-28 01:47:28,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:28,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:28,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:28,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:28,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:28,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:28,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 502 transitions, 8133 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:28,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:28,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:28,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:29,657 INFO L124 PetriNetUnfolderBase]: 2720/5490 cut-off events. [2024-06-28 01:47:29,658 INFO L125 PetriNetUnfolderBase]: For 119913/120009 co-relation queries the response was YES. [2024-06-28 01:47:29,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33959 conditions, 5490 events. 2720/5490 cut-off events. For 119913/120009 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 44758 event pairs, 687 based on Foata normal form. 98/5407 useless extension candidates. Maximal degree in co-relation 33741. Up to 4099 conditions per place. [2024-06-28 01:47:29,750 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 458 selfloop transitions, 73 changer transitions 0/541 dead transitions. [2024-06-28 01:47:29,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 541 transitions, 9470 flow [2024-06-28 01:47:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:29,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:29,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 197 transitions. [2024-06-28 01:47:29,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184210526315789 [2024-06-28 01:47:29,751 INFO L175 Difference]: Start difference. First operand has 485 places, 502 transitions, 8133 flow. Second operand 10 states and 197 transitions. [2024-06-28 01:47:29,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 541 transitions, 9470 flow [2024-06-28 01:47:30,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 541 transitions, 9242 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:30,825 INFO L231 Difference]: Finished difference. Result has 488 places, 503 transitions, 8111 flow [2024-06-28 01:47:30,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7905, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8111, PETRI_PLACES=488, PETRI_TRANSITIONS=503} [2024-06-28 01:47:30,826 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 446 predicate places. [2024-06-28 01:47:30,826 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 503 transitions, 8111 flow [2024-06-28 01:47:30,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:30,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:30,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:30,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:47:30,827 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 01:47:30,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:30,827 INFO L85 PathProgramCache]: Analyzing trace with hash 749251664, now seen corresponding path program 30 times [2024-06-28 01:47:30,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:30,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053871884] [2024-06-28 01:47:30,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:30,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:31,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:31,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053871884] [2024-06-28 01:47:31,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053871884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:31,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:31,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:31,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39145865] [2024-06-28 01:47:31,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:31,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:31,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:31,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:31,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:31,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 503 transitions, 8111 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:31,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:31,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:31,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:33,256 INFO L124 PetriNetUnfolderBase]: 2736/5322 cut-off events. [2024-06-28 01:47:33,256 INFO L125 PetriNetUnfolderBase]: For 121271/121367 co-relation queries the response was YES. [2024-06-28 01:47:33,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33786 conditions, 5322 events. 2736/5322 cut-off events. For 121271/121367 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 42259 event pairs, 631 based on Foata normal form. 98/5309 useless extension candidates. Maximal degree in co-relation 33567. Up to 4193 conditions per place. [2024-06-28 01:47:33,499 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 456 selfloop transitions, 74 changer transitions 0/540 dead transitions. [2024-06-28 01:47:33,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 540 transitions, 9442 flow [2024-06-28 01:47:33,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:33,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:47:33,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-28 01:47:33,500 INFO L175 Difference]: Start difference. First operand has 488 places, 503 transitions, 8111 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:47:33,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 540 transitions, 9442 flow [2024-06-28 01:47:34,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 540 transitions, 9246 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:34,568 INFO L231 Difference]: Finished difference. Result has 491 places, 505 transitions, 8146 flow [2024-06-28 01:47:34,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8146, PETRI_PLACES=491, PETRI_TRANSITIONS=505} [2024-06-28 01:47:34,568 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-28 01:47:34,568 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 505 transitions, 8146 flow [2024-06-28 01:47:34,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:34,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:34,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:34,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:47:34,569 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 01:47:34,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 749044274, now seen corresponding path program 31 times [2024-06-28 01:47:34,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:34,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121569513] [2024-06-28 01:47:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:35,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:35,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121569513] [2024-06-28 01:47:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121569513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598655197] [2024-06-28 01:47:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:35,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:35,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:35,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 505 transitions, 8146 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:35,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:35,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:35,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:37,014 INFO L124 PetriNetUnfolderBase]: 2752/5356 cut-off events. [2024-06-28 01:47:37,014 INFO L125 PetriNetUnfolderBase]: For 123951/124047 co-relation queries the response was YES. [2024-06-28 01:47:37,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33991 conditions, 5356 events. 2752/5356 cut-off events. For 123951/124047 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 42587 event pairs, 625 based on Foata normal form. 98/5342 useless extension candidates. Maximal degree in co-relation 33770. Up to 4177 conditions per place. [2024-06-28 01:47:37,114 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 458 selfloop transitions, 75 changer transitions 0/543 dead transitions. [2024-06-28 01:47:37,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 543 transitions, 9484 flow [2024-06-28 01:47:37,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2024-06-28 01:47:37,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5157894736842106 [2024-06-28 01:47:37,115 INFO L175 Difference]: Start difference. First operand has 491 places, 505 transitions, 8146 flow. Second operand 10 states and 196 transitions. [2024-06-28 01:47:37,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 543 transitions, 9484 flow [2024-06-28 01:47:38,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 543 transitions, 9313 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-28 01:47:38,324 INFO L231 Difference]: Finished difference. Result has 496 places, 506 transitions, 8189 flow [2024-06-28 01:47:38,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7975, PETRI_DIFFERENCE_MINUEND_PLACES=486, 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=10, PETRI_FLOW=8189, PETRI_PLACES=496, PETRI_TRANSITIONS=506} [2024-06-28 01:47:38,325 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 454 predicate places. [2024-06-28 01:47:38,325 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 506 transitions, 8189 flow [2024-06-28 01:47:38,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:38,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:38,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:38,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:47:38,326 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 01:47:38,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1740636210, now seen corresponding path program 32 times [2024-06-28 01:47:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:38,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515055933] [2024-06-28 01:47:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:38,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:39,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:39,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:39,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515055933] [2024-06-28 01:47:39,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515055933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:39,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:39,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:39,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77446252] [2024-06-28 01:47:39,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:39,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:39,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:39,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:39,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:39,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:39,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 506 transitions, 8189 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:39,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:39,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:39,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:40,659 INFO L124 PetriNetUnfolderBase]: 2779/5370 cut-off events. [2024-06-28 01:47:40,659 INFO L125 PetriNetUnfolderBase]: For 126004/126102 co-relation queries the response was YES. [2024-06-28 01:47:40,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34240 conditions, 5370 events. 2779/5370 cut-off events. For 126004/126102 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 42512 event pairs, 608 based on Foata normal form. 100/5367 useless extension candidates. Maximal degree in co-relation 34018. Up to 4261 conditions per place. [2024-06-28 01:47:40,754 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 455 selfloop transitions, 79 changer transitions 0/544 dead transitions. [2024-06-28 01:47:40,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 544 transitions, 9544 flow [2024-06-28 01:47:40,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:40,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:40,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:47:40,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-28 01:47:40,755 INFO L175 Difference]: Start difference. First operand has 496 places, 506 transitions, 8189 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:47:40,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 544 transitions, 9544 flow [2024-06-28 01:47:41,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 544 transitions, 9336 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:41,993 INFO L231 Difference]: Finished difference. Result has 498 places, 509 transitions, 8224 flow [2024-06-28 01:47:41,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=7985, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8224, PETRI_PLACES=498, PETRI_TRANSITIONS=509} [2024-06-28 01:47:41,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-06-28 01:47:41,994 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 509 transitions, 8224 flow [2024-06-28 01:47:41,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:41,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:41,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:47:41,995 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 01:47:41,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1484135700, now seen corresponding path program 33 times [2024-06-28 01:47:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984267144] [2024-06-28 01:47:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:42,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:42,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984267144] [2024-06-28 01:47:42,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984267144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:42,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:42,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:42,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188400449] [2024-06-28 01:47:42,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:42,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:42,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:42,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:42,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:42,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:42,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 509 transitions, 8224 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:42,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:42,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:42,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:44,454 INFO L124 PetriNetUnfolderBase]: 2795/5645 cut-off events. [2024-06-28 01:47:44,454 INFO L125 PetriNetUnfolderBase]: For 129472/129570 co-relation queries the response was YES. [2024-06-28 01:47:44,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34720 conditions, 5645 events. 2795/5645 cut-off events. For 129472/129570 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 46296 event pairs, 686 based on Foata normal form. 100/5555 useless extension candidates. Maximal degree in co-relation 34497. Up to 4289 conditions per place. [2024-06-28 01:47:44,556 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 455 selfloop transitions, 80 changer transitions 0/545 dead transitions. [2024-06-28 01:47:44,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 545 transitions, 9564 flow [2024-06-28 01:47:44,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:44,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-06-28 01:47:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052631578947369 [2024-06-28 01:47:44,557 INFO L175 Difference]: Start difference. First operand has 498 places, 509 transitions, 8224 flow. Second operand 10 states and 192 transitions. [2024-06-28 01:47:44,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 545 transitions, 9564 flow [2024-06-28 01:47:45,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 545 transitions, 9352 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:45,810 INFO L231 Difference]: Finished difference. Result has 501 places, 510 transitions, 8240 flow [2024-06-28 01:47:45,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8012, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8240, PETRI_PLACES=501, PETRI_TRANSITIONS=510} [2024-06-28 01:47:45,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-28 01:47:45,810 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 510 transitions, 8240 flow [2024-06-28 01:47:45,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:45,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:45,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:45,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:47:45,811 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 01:47:45,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:45,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1483928310, now seen corresponding path program 34 times [2024-06-28 01:47:45,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:45,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333481613] [2024-06-28 01:47:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:45,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:46,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:46,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:46,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333481613] [2024-06-28 01:47:46,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333481613] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:46,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:46,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398888128] [2024-06-28 01:47:46,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:46,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:46,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:46,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:46,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:46,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:46,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 510 transitions, 8240 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:46,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:46,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:46,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:48,261 INFO L124 PetriNetUnfolderBase]: 2811/5429 cut-off events. [2024-06-28 01:47:48,261 INFO L125 PetriNetUnfolderBase]: For 130981/131079 co-relation queries the response was YES. [2024-06-28 01:47:48,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34555 conditions, 5429 events. 2811/5429 cut-off events. For 130981/131079 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 42975 event pairs, 617 based on Foata normal form. 100/5424 useless extension candidates. Maximal degree in co-relation 34331. Up to 4229 conditions per place. [2024-06-28 01:47:48,353 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 454 selfloop transitions, 83 changer transitions 0/547 dead transitions. [2024-06-28 01:47:48,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 547 transitions, 9588 flow [2024-06-28 01:47:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:48,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:48,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-06-28 01:47:48,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078947368421053 [2024-06-28 01:47:48,355 INFO L175 Difference]: Start difference. First operand has 501 places, 510 transitions, 8240 flow. Second operand 10 states and 193 transitions. [2024-06-28 01:47:48,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 547 transitions, 9588 flow [2024-06-28 01:47:49,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 547 transitions, 9360 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:49,563 INFO L231 Difference]: Finished difference. Result has 504 places, 511 transitions, 8248 flow [2024-06-28 01:47:49,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8012, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8248, PETRI_PLACES=504, PETRI_TRANSITIONS=511} [2024-06-28 01:47:49,564 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 462 predicate places. [2024-06-28 01:47:49,564 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 511 transitions, 8248 flow [2024-06-28 01:47:49,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:49,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:49,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:49,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:47:49,564 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 01:47:49,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash 743537744, now seen corresponding path program 35 times [2024-06-28 01:47:49,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:49,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661143371] [2024-06-28 01:47:49,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:49,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:50,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:50,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:50,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661143371] [2024-06-28 01:47:50,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661143371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:50,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:50,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:47:50,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547119627] [2024-06-28 01:47:50,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:50,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:47:50,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:50,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:47:50,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:47:50,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:50,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 511 transitions, 8248 flow. Second operand has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:50,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:50,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:50,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:52,003 INFO L124 PetriNetUnfolderBase]: 2812/5465 cut-off events. [2024-06-28 01:47:52,004 INFO L125 PetriNetUnfolderBase]: For 121389/121485 co-relation queries the response was YES. [2024-06-28 01:47:52,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34207 conditions, 5465 events. 2812/5465 cut-off events. For 121389/121485 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 43538 event pairs, 636 based on Foata normal form. 98/5449 useless extension candidates. Maximal degree in co-relation 33982. Up to 4011 conditions per place. [2024-06-28 01:47:52,264 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 454 selfloop transitions, 85 changer transitions 0/549 dead transitions. [2024-06-28 01:47:52,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 549 transitions, 9604 flow [2024-06-28 01:47:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-28 01:47:52,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-28 01:47:52,266 INFO L175 Difference]: Start difference. First operand has 504 places, 511 transitions, 8248 flow. Second operand 10 states and 195 transitions. [2024-06-28 01:47:52,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 549 transitions, 9604 flow [2024-06-28 01:47:53,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 549 transitions, 9378 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:53,537 INFO L231 Difference]: Finished difference. Result has 506 places, 512 transitions, 8264 flow [2024-06-28 01:47:53,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8264, PETRI_PLACES=506, PETRI_TRANSITIONS=512} [2024-06-28 01:47:53,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 464 predicate places. [2024-06-28 01:47:53,538 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 512 transitions, 8264 flow [2024-06-28 01:47:53,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.272727272727273) internal successors, (135), 11 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:53,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:53,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:47:53,538 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 01:47:53,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:53,539 INFO L85 PathProgramCache]: Analyzing trace with hash -519238832, now seen corresponding path program 10 times [2024-06-28 01:47:53,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:53,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318241856] [2024-06-28 01:47:53,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:53,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:54,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318241856] [2024-06-28 01:47:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318241856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:54,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:54,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:54,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624820541] [2024-06-28 01:47:54,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:54,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:54,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:54,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 512 transitions, 8264 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:54,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:54,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:54,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:56,040 INFO L124 PetriNetUnfolderBase]: 2845/5556 cut-off events. [2024-06-28 01:47:56,040 INFO L125 PetriNetUnfolderBase]: For 114210/114300 co-relation queries the response was YES. [2024-06-28 01:47:56,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34370 conditions, 5556 events. 2845/5556 cut-off events. For 114210/114300 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 44543 event pairs, 670 based on Foata normal form. 91/5515 useless extension candidates. Maximal degree in co-relation 34144. Up to 4111 conditions per place. [2024-06-28 01:47:56,141 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 460 selfloop transitions, 91 changer transitions 0/561 dead transitions. [2024-06-28 01:47:56,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 561 transitions, 9721 flow [2024-06-28 01:47:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:56,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:56,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-28 01:47:56,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5167464114832536 [2024-06-28 01:47:56,142 INFO L175 Difference]: Start difference. First operand has 506 places, 512 transitions, 8264 flow. Second operand 11 states and 216 transitions. [2024-06-28 01:47:56,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 561 transitions, 9721 flow [2024-06-28 01:47:57,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 561 transitions, 9489 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:57,773 INFO L231 Difference]: Finished difference. Result has 510 places, 519 transitions, 8326 flow [2024-06-28 01:47:57,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8326, PETRI_PLACES=510, PETRI_TRANSITIONS=519} [2024-06-28 01:47:57,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 468 predicate places. [2024-06-28 01:47:57,773 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 519 transitions, 8326 flow [2024-06-28 01:47:57,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:57,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:57,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:57,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:47:57,774 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 01:47:57,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:57,774 INFO L85 PathProgramCache]: Analyzing trace with hash 126680678, now seen corresponding path program 11 times [2024-06-28 01:47:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211844559] [2024-06-28 01:47:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:58,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:58,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211844559] [2024-06-28 01:47:58,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211844559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:58,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:58,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:58,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129790444] [2024-06-28 01:47:58,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:58,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:58,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:58,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:58,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:58,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:47:58,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 519 transitions, 8326 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:58,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:58,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:47:58,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:00,515 INFO L124 PetriNetUnfolderBase]: 2878/5564 cut-off events. [2024-06-28 01:48:00,516 INFO L125 PetriNetUnfolderBase]: For 110622/110714 co-relation queries the response was YES. [2024-06-28 01:48:00,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34466 conditions, 5564 events. 2878/5564 cut-off events. For 110622/110714 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 44278 event pairs, 635 based on Foata normal form. 93/5537 useless extension candidates. Maximal degree in co-relation 34238. Up to 4152 conditions per place. [2024-06-28 01:48:00,615 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 457 selfloop transitions, 100 changer transitions 0/567 dead transitions. [2024-06-28 01:48:00,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 567 transitions, 9802 flow [2024-06-28 01:48:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:00,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 01:48:00,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-06-28 01:48:00,616 INFO L175 Difference]: Start difference. First operand has 510 places, 519 transitions, 8326 flow. Second operand 11 states and 215 transitions. [2024-06-28 01:48:00,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 567 transitions, 9802 flow [2024-06-28 01:48:01,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 567 transitions, 9572 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:01,873 INFO L231 Difference]: Finished difference. Result has 516 places, 526 transitions, 8419 flow [2024-06-28 01:48:01,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8419, PETRI_PLACES=516, PETRI_TRANSITIONS=526} [2024-06-28 01:48:01,874 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 474 predicate places. [2024-06-28 01:48:01,874 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 526 transitions, 8419 flow [2024-06-28 01:48:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:01,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:01,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:48:01,876 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 01:48:01,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:01,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1402216768, now seen corresponding path program 12 times [2024-06-28 01:48:01,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:01,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694852822] [2024-06-28 01:48:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:01,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:02,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:02,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694852822] [2024-06-28 01:48:02,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694852822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:02,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:02,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:02,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252022057] [2024-06-28 01:48:02,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:02,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:02,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:02,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:02,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 526 transitions, 8419 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:02,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:02,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:04,487 INFO L124 PetriNetUnfolderBase]: 2889/5598 cut-off events. [2024-06-28 01:48:04,487 INFO L125 PetriNetUnfolderBase]: For 113870/113962 co-relation queries the response was YES. [2024-06-28 01:48:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34763 conditions, 5598 events. 2889/5598 cut-off events. For 113870/113962 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 44627 event pairs, 641 based on Foata normal form. 93/5569 useless extension candidates. Maximal degree in co-relation 34533. Up to 4169 conditions per place. [2024-06-28 01:48:04,595 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 458 selfloop transitions, 101 changer transitions 0/569 dead transitions. [2024-06-28 01:48:04,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 569 transitions, 9865 flow [2024-06-28 01:48:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 01:48:04,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-28 01:48:04,597 INFO L175 Difference]: Start difference. First operand has 516 places, 526 transitions, 8419 flow. Second operand 11 states and 214 transitions. [2024-06-28 01:48:04,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 569 transitions, 9865 flow [2024-06-28 01:48:06,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 569 transitions, 9619 flow, removed 33 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:06,020 INFO L231 Difference]: Finished difference. Result has 521 places, 528 transitions, 8454 flow [2024-06-28 01:48:06,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8173, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8454, PETRI_PLACES=521, PETRI_TRANSITIONS=528} [2024-06-28 01:48:06,022 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 479 predicate places. [2024-06-28 01:48:06,022 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 528 transitions, 8454 flow [2024-06-28 01:48:06,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:06,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:06,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:06,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:48:06,025 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 01:48:06,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:06,025 INFO L85 PathProgramCache]: Analyzing trace with hash 136203878, now seen corresponding path program 13 times [2024-06-28 01:48:06,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:06,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506542319] [2024-06-28 01:48:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:06,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:06,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:06,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506542319] [2024-06-28 01:48:06,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506542319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:06,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:06,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:06,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890380655] [2024-06-28 01:48:06,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:06,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:06,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:06,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:06,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 528 transitions, 8454 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:06,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:06,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:06,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:08,599 INFO L124 PetriNetUnfolderBase]: 2926/5574 cut-off events. [2024-06-28 01:48:08,599 INFO L125 PetriNetUnfolderBase]: For 125372/125487 co-relation queries the response was YES. [2024-06-28 01:48:08,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35632 conditions, 5574 events. 2926/5574 cut-off events. For 125372/125487 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 43808 event pairs, 437 based on Foata normal form. 116/5578 useless extension candidates. Maximal degree in co-relation 35401. Up to 3870 conditions per place. [2024-06-28 01:48:08,704 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 364 selfloop transitions, 212 changer transitions 0/586 dead transitions. [2024-06-28 01:48:08,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 586 transitions, 10766 flow [2024-06-28 01:48:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:08,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 217 transitions. [2024-06-28 01:48:08,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191387559808612 [2024-06-28 01:48:08,705 INFO L175 Difference]: Start difference. First operand has 521 places, 528 transitions, 8454 flow. Second operand 11 states and 217 transitions. [2024-06-28 01:48:08,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 586 transitions, 10766 flow [2024-06-28 01:48:10,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 586 transitions, 10497 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:10,217 INFO L231 Difference]: Finished difference. Result has 526 places, 543 transitions, 9264 flow [2024-06-28 01:48:10,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8185, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9264, PETRI_PLACES=526, PETRI_TRANSITIONS=543} [2024-06-28 01:48:10,218 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 484 predicate places. [2024-06-28 01:48:10,218 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 543 transitions, 9264 flow [2024-06-28 01:48:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:10,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:10,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:10,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:48:10,219 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 01:48:10,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash -775739342, now seen corresponding path program 14 times [2024-06-28 01:48:10,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:10,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302210331] [2024-06-28 01:48:10,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:10,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:11,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:11,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302210331] [2024-06-28 01:48:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302210331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:11,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856027727] [2024-06-28 01:48:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:11,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:11,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:11,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:11,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:11,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:11,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 543 transitions, 9264 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:11,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:11,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:11,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:13,336 INFO L124 PetriNetUnfolderBase]: 2948/5749 cut-off events. [2024-06-28 01:48:13,336 INFO L125 PetriNetUnfolderBase]: For 134679/134770 co-relation queries the response was YES. [2024-06-28 01:48:13,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36736 conditions, 5749 events. 2948/5749 cut-off events. For 134679/134770 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 46331 event pairs, 676 based on Foata normal form. 92/5703 useless extension candidates. Maximal degree in co-relation 36501. Up to 4257 conditions per place. [2024-06-28 01:48:13,449 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 483 selfloop transitions, 96 changer transitions 0/589 dead transitions. [2024-06-28 01:48:13,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 589 transitions, 10782 flow [2024-06-28 01:48:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:13,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 218 transitions. [2024-06-28 01:48:13,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5215311004784688 [2024-06-28 01:48:13,451 INFO L175 Difference]: Start difference. First operand has 526 places, 543 transitions, 9264 flow. Second operand 11 states and 218 transitions. [2024-06-28 01:48:13,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 589 transitions, 10782 flow [2024-06-28 01:48:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 589 transitions, 10380 flow, removed 186 selfloop flow, removed 2 redundant places. [2024-06-28 01:48:14,955 INFO L231 Difference]: Finished difference. Result has 535 places, 547 transitions, 9161 flow [2024-06-28 01:48:14,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8864, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9161, PETRI_PLACES=535, PETRI_TRANSITIONS=547} [2024-06-28 01:48:14,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-28 01:48:14,956 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 547 transitions, 9161 flow [2024-06-28 01:48:14,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:14,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:14,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:14,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:48:14,956 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 01:48:14,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1727877070, now seen corresponding path program 15 times [2024-06-28 01:48:14,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:14,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634107259] [2024-06-28 01:48:14,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:14,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:15,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:15,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634107259] [2024-06-28 01:48:15,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634107259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:15,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691916166] [2024-06-28 01:48:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:15,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:15,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:15,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 547 transitions, 9161 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:15,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:15,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:15,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:17,696 INFO L124 PetriNetUnfolderBase]: 2970/5705 cut-off events. [2024-06-28 01:48:17,697 INFO L125 PetriNetUnfolderBase]: For 131024/131117 co-relation queries the response was YES. [2024-06-28 01:48:17,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36899 conditions, 5705 events. 2970/5705 cut-off events. For 131024/131117 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 45406 event pairs, 644 based on Foata normal form. 94/5685 useless extension candidates. Maximal degree in co-relation 36662. Up to 4286 conditions per place. [2024-06-28 01:48:17,801 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 465 selfloop transitions, 116 changer transitions 0/591 dead transitions. [2024-06-28 01:48:17,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 591 transitions, 10679 flow [2024-06-28 01:48:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:17,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-28 01:48:17,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2024-06-28 01:48:17,803 INFO L175 Difference]: Start difference. First operand has 535 places, 547 transitions, 9161 flow. Second operand 11 states and 212 transitions. [2024-06-28 01:48:17,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 591 transitions, 10679 flow [2024-06-28 01:48:19,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 591 transitions, 10425 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:19,706 INFO L231 Difference]: Finished difference. Result has 540 places, 552 transitions, 9266 flow [2024-06-28 01:48:19,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8911, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9266, PETRI_PLACES=540, PETRI_TRANSITIONS=552} [2024-06-28 01:48:19,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 498 predicate places. [2024-06-28 01:48:19,707 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 552 transitions, 9266 flow [2024-06-28 01:48:19,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:19,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:19,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:19,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:48:19,708 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 01:48:19,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -668350396, now seen corresponding path program 16 times [2024-06-28 01:48:19,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:19,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833936661] [2024-06-28 01:48:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:20,869 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 01:48:20,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:20,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833936661] [2024-06-28 01:48:20,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833936661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:20,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:20,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:20,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282031001] [2024-06-28 01:48:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:20,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:20,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:20,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:20,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:20,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 552 transitions, 9266 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:20,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:20,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:22,734 INFO L124 PetriNetUnfolderBase]: 2971/5661 cut-off events. [2024-06-28 01:48:22,734 INFO L125 PetriNetUnfolderBase]: For 125127/125242 co-relation queries the response was YES. [2024-06-28 01:48:22,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36751 conditions, 5661 events. 2971/5661 cut-off events. For 125127/125242 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 44633 event pairs, 467 based on Foata normal form. 116/5659 useless extension candidates. Maximal degree in co-relation 36512. Up to 4123 conditions per place. [2024-06-28 01:48:22,840 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 445 selfloop transitions, 139 changer transitions 0/594 dead transitions. [2024-06-28 01:48:22,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 594 transitions, 10750 flow [2024-06-28 01:48:22,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-28 01:48:22,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119617224880383 [2024-06-28 01:48:22,841 INFO L175 Difference]: Start difference. First operand has 540 places, 552 transitions, 9266 flow. Second operand 11 states and 214 transitions. [2024-06-28 01:48:22,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 594 transitions, 10750 flow [2024-06-28 01:48:24,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 594 transitions, 10349 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:24,768 INFO L231 Difference]: Finished difference. Result has 544 places, 555 transitions, 9244 flow [2024-06-28 01:48:24,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8913, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9244, PETRI_PLACES=544, PETRI_TRANSITIONS=555} [2024-06-28 01:48:24,769 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2024-06-28 01:48:24,769 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 555 transitions, 9244 flow [2024-06-28 01:48:24,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:24,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:24,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:24,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:48:24,770 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 01:48:24,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 664669008, now seen corresponding path program 17 times [2024-06-28 01:48:24,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:24,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729739992] [2024-06-28 01:48:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:24,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:25,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729739992] [2024-06-28 01:48:25,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729739992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:25,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:25,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:25,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929058398] [2024-06-28 01:48:25,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:25,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:25,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:25,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:25,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:25,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:25,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 555 transitions, 9244 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:25,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:25,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:25,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:27,710 INFO L124 PetriNetUnfolderBase]: 2998/5827 cut-off events. [2024-06-28 01:48:27,711 INFO L125 PetriNetUnfolderBase]: For 138995/139081 co-relation queries the response was YES. [2024-06-28 01:48:27,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37512 conditions, 5827 events. 2998/5827 cut-off events. For 138995/139081 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 47006 event pairs, 1064 based on Foata normal form. 87/5783 useless extension candidates. Maximal degree in co-relation 37271. Up to 4897 conditions per place. [2024-06-28 01:48:27,819 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 549 selfloop transitions, 46 changer transitions 0/605 dead transitions. [2024-06-28 01:48:27,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 605 transitions, 11102 flow [2024-06-28 01:48:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:48:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:48:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 236 transitions. [2024-06-28 01:48:27,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777327935222672 [2024-06-28 01:48:27,820 INFO L175 Difference]: Start difference. First operand has 544 places, 555 transitions, 9244 flow. Second operand 13 states and 236 transitions. [2024-06-28 01:48:27,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 605 transitions, 11102 flow [2024-06-28 01:48:29,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 605 transitions, 10846 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 01:48:29,493 INFO L231 Difference]: Finished difference. Result has 552 places, 561 transitions, 9296 flow [2024-06-28 01:48:29,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=8988, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9296, PETRI_PLACES=552, PETRI_TRANSITIONS=561} [2024-06-28 01:48:29,494 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-28 01:48:29,494 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 561 transitions, 9296 flow [2024-06-28 01:48:29,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:29,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:29,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:48:29,495 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 01:48:29,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:29,495 INFO L85 PathProgramCache]: Analyzing trace with hash -509715632, now seen corresponding path program 18 times [2024-06-28 01:48:29,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:29,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992493997] [2024-06-28 01:48:29,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:29,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:30,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:30,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:30,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992493997] [2024-06-28 01:48:30,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992493997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:30,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:30,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:30,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777248757] [2024-06-28 01:48:30,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:30,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:30,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:30,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 561 transitions, 9296 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:30,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:30,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:30,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:32,390 INFO L124 PetriNetUnfolderBase]: 3025/5901 cut-off events. [2024-06-28 01:48:32,391 INFO L125 PetriNetUnfolderBase]: For 149148/149239 co-relation queries the response was YES. [2024-06-28 01:48:32,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37951 conditions, 5901 events. 3025/5901 cut-off events. For 149148/149239 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 47746 event pairs, 677 based on Foata normal form. 92/5856 useless extension candidates. Maximal degree in co-relation 37708. Up to 4321 conditions per place. [2024-06-28 01:48:32,497 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 493 selfloop transitions, 109 changer transitions 0/612 dead transitions. [2024-06-28 01:48:32,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 612 transitions, 11168 flow [2024-06-28 01:48:32,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:32,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:32,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 235 transitions. [2024-06-28 01:48:32,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153508771929824 [2024-06-28 01:48:32,498 INFO L175 Difference]: Start difference. First operand has 552 places, 561 transitions, 9296 flow. Second operand 12 states and 235 transitions. [2024-06-28 01:48:32,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 612 transitions, 11168 flow [2024-06-28 01:48:34,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 612 transitions, 11020 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:34,204 INFO L231 Difference]: Finished difference. Result has 557 places, 567 transitions, 9580 flow [2024-06-28 01:48:34,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9580, PETRI_PLACES=557, PETRI_TRANSITIONS=567} [2024-06-28 01:48:34,205 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 515 predicate places. [2024-06-28 01:48:34,205 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 567 transitions, 9580 flow [2024-06-28 01:48:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:34,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:34,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:34,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:48:34,205 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 01:48:34,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:34,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1736805070, now seen corresponding path program 19 times [2024-06-28 01:48:34,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:34,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779951886] [2024-06-28 01:48:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:34,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:35,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:35,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:35,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779951886] [2024-06-28 01:48:35,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779951886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:35,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:35,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:35,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313782468] [2024-06-28 01:48:35,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:35,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:35,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:35,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:35,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:35,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:35,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 567 transitions, 9580 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:35,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:35,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:35,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:37,299 INFO L124 PetriNetUnfolderBase]: 3039/5761 cut-off events. [2024-06-28 01:48:37,299 INFO L125 PetriNetUnfolderBase]: For 150323/150438 co-relation queries the response was YES. [2024-06-28 01:48:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38436 conditions, 5761 events. 3039/5761 cut-off events. For 150323/150438 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 45401 event pairs, 434 based on Foata normal form. 116/5772 useless extension candidates. Maximal degree in co-relation 38190. Up to 4046 conditions per place. [2024-06-28 01:48:37,413 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 358 selfloop transitions, 253 changer transitions 0/621 dead transitions. [2024-06-28 01:48:37,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 621 transitions, 11686 flow [2024-06-28 01:48:37,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:37,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 236 transitions. [2024-06-28 01:48:37,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-28 01:48:37,414 INFO L175 Difference]: Start difference. First operand has 557 places, 567 transitions, 9580 flow. Second operand 12 states and 236 transitions. [2024-06-28 01:48:37,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 621 transitions, 11686 flow [2024-06-28 01:48:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 621 transitions, 11466 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:48:39,390 INFO L231 Difference]: Finished difference. Result has 563 places, 576 transitions, 10327 flow [2024-06-28 01:48:39,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9360, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10327, PETRI_PLACES=563, PETRI_TRANSITIONS=576} [2024-06-28 01:48:39,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 521 predicate places. [2024-06-28 01:48:39,390 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 576 transitions, 10327 flow [2024-06-28 01:48:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:39,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:39,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:48:39,391 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 01:48:39,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1737073840, now seen corresponding path program 20 times [2024-06-28 01:48:39,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59157490] [2024-06-28 01:48:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:40,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:40,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:40,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59157490] [2024-06-28 01:48:40,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59157490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:40,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:40,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:40,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882208470] [2024-06-28 01:48:40,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:40,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:40,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:40,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:40,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:40,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:40,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 576 transitions, 10327 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:40,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:40,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:42,297 INFO L124 PetriNetUnfolderBase]: 3040/5843 cut-off events. [2024-06-28 01:48:42,298 INFO L125 PetriNetUnfolderBase]: For 150550/150643 co-relation queries the response was YES. [2024-06-28 01:48:42,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39391 conditions, 5843 events. 3040/5843 cut-off events. For 150550/150643 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 46704 event pairs, 635 based on Foata normal form. 94/5821 useless extension candidates. Maximal degree in co-relation 39141. Up to 4396 conditions per place. [2024-06-28 01:48:42,409 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 489 selfloop transitions, 117 changer transitions 0/616 dead transitions. [2024-06-28 01:48:42,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 616 transitions, 11867 flow [2024-06-28 01:48:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:42,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 211 transitions. [2024-06-28 01:48:42,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047846889952153 [2024-06-28 01:48:42,410 INFO L175 Difference]: Start difference. First operand has 563 places, 576 transitions, 10327 flow. Second operand 11 states and 211 transitions. [2024-06-28 01:48:42,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 616 transitions, 11867 flow [2024-06-28 01:48:44,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 616 transitions, 11385 flow, removed 189 selfloop flow, removed 4 redundant places. [2024-06-28 01:48:44,179 INFO L231 Difference]: Finished difference. Result has 570 places, 578 transitions, 10182 flow [2024-06-28 01:48:44,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9925, PETRI_DIFFERENCE_MINUEND_PLACES=559, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10182, PETRI_PLACES=570, PETRI_TRANSITIONS=578} [2024-06-28 01:48:44,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 528 predicate places. [2024-06-28 01:48:44,179 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 578 transitions, 10182 flow [2024-06-28 01:48:44,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:44,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:44,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:44,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:48:44,180 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 01:48:44,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -510042062, now seen corresponding path program 21 times [2024-06-28 01:48:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:44,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277912030] [2024-06-28 01:48:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:44,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:44,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:44,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277912030] [2024-06-28 01:48:44,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277912030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:44,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:44,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:44,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873194685] [2024-06-28 01:48:44,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:44,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:44,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:44,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:44,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:45,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:45,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 578 transitions, 10182 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:45,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:45,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:45,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:46,959 INFO L124 PetriNetUnfolderBase]: 3051/5956 cut-off events. [2024-06-28 01:48:46,959 INFO L125 PetriNetUnfolderBase]: For 148115/148206 co-relation queries the response was YES. [2024-06-28 01:48:47,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39663 conditions, 5956 events. 3051/5956 cut-off events. For 148115/148206 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 48339 event pairs, 681 based on Foata normal form. 92/5905 useless extension candidates. Maximal degree in co-relation 39411. Up to 4413 conditions per place. [2024-06-28 01:48:47,073 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 508 selfloop transitions, 101 changer transitions 0/619 dead transitions. [2024-06-28 01:48:47,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 619 transitions, 11714 flow [2024-06-28 01:48:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:47,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 01:48:47,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-06-28 01:48:47,074 INFO L175 Difference]: Start difference. First operand has 570 places, 578 transitions, 10182 flow. Second operand 11 states and 215 transitions. [2024-06-28 01:48:47,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 619 transitions, 11714 flow [2024-06-28 01:48:48,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 619 transitions, 11476 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:48,641 INFO L231 Difference]: Finished difference. Result has 574 places, 580 transitions, 10231 flow [2024-06-28 01:48:48,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9944, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10231, PETRI_PLACES=574, PETRI_TRANSITIONS=580} [2024-06-28 01:48:48,642 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 532 predicate places. [2024-06-28 01:48:48,642 INFO L495 AbstractCegarLoop]: Abstraction has has 574 places, 580 transitions, 10231 flow [2024-06-28 01:48:48,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:48,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:48,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:48,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:48:48,642 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 01:48:48,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:48,643 INFO L85 PathProgramCache]: Analyzing trace with hash 293771058, now seen corresponding path program 22 times [2024-06-28 01:48:48,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290511286] [2024-06-28 01:48:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:48,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:49,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:49,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290511286] [2024-06-28 01:48:49,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290511286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:49,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:49,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:49,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431271401] [2024-06-28 01:48:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:49,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:49,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:49,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:49,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 580 transitions, 10231 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:49,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:49,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:49,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:51,581 INFO L124 PetriNetUnfolderBase]: 3052/5922 cut-off events. [2024-06-28 01:48:51,581 INFO L125 PetriNetUnfolderBase]: For 145092/145178 co-relation queries the response was YES. [2024-06-28 01:48:51,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39519 conditions, 5922 events. 3052/5922 cut-off events. For 145092/145178 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 47819 event pairs, 1080 based on Foata normal form. 87/5878 useless extension candidates. Maximal degree in co-relation 39266. Up to 5045 conditions per place. [2024-06-28 01:48:51,697 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 591 selfloop transitions, 24 changer transitions 0/625 dead transitions. [2024-06-28 01:48:51,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 625 transitions, 11803 flow [2024-06-28 01:48:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:48:51,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:48:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 220 transitions. [2024-06-28 01:48:51,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-28 01:48:51,698 INFO L175 Difference]: Start difference. First operand has 574 places, 580 transitions, 10231 flow. Second operand 12 states and 220 transitions. [2024-06-28 01:48:51,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 625 transitions, 11803 flow [2024-06-28 01:48:53,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 625 transitions, 11418 flow, removed 93 selfloop flow, removed 9 redundant places. [2024-06-28 01:48:53,528 INFO L231 Difference]: Finished difference. Result has 577 places, 582 transitions, 9979 flow [2024-06-28 01:48:53,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9906, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9979, PETRI_PLACES=577, PETRI_TRANSITIONS=582} [2024-06-28 01:48:53,529 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 535 predicate places. [2024-06-28 01:48:53,529 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 582 transitions, 9979 flow [2024-06-28 01:48:53,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:53,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:53,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:53,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:48:53,530 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 01:48:53,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:53,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1001923546, now seen corresponding path program 23 times [2024-06-28 01:48:53,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:53,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373750036] [2024-06-28 01:48:53,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:53,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:53,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:54,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:54,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373750036] [2024-06-28 01:48:54,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373750036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:54,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:54,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234336299] [2024-06-28 01:48:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:54,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:54,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:54,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:54,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 582 transitions, 9979 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:54,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:54,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:54,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:48:56,865 INFO L124 PetriNetUnfolderBase]: 3050/5873 cut-off events. [2024-06-28 01:48:56,865 INFO L125 PetriNetUnfolderBase]: For 130745/130855 co-relation queries the response was YES. [2024-06-28 01:48:56,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38443 conditions, 5873 events. 3050/5873 cut-off events. For 130745/130855 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 46986 event pairs, 519 based on Foata normal form. 111/5848 useless extension candidates. Maximal degree in co-relation 38189. Up to 4247 conditions per place. [2024-06-28 01:48:56,978 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 479 selfloop transitions, 132 changer transitions 0/621 dead transitions. [2024-06-28 01:48:56,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 621 transitions, 11439 flow [2024-06-28 01:48:56,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:48:56,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:48:56,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-28 01:48:56,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143540669856459 [2024-06-28 01:48:56,980 INFO L175 Difference]: Start difference. First operand has 577 places, 582 transitions, 9979 flow. Second operand 11 states and 215 transitions. [2024-06-28 01:48:56,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 621 transitions, 11439 flow [2024-06-28 01:48:58,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 621 transitions, 11335 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-28 01:48:58,564 INFO L231 Difference]: Finished difference. Result has 581 places, 582 transitions, 10144 flow [2024-06-28 01:48:58,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9875, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10144, PETRI_PLACES=581, PETRI_TRANSITIONS=582} [2024-06-28 01:48:58,565 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 539 predicate places. [2024-06-28 01:48:58,565 INFO L495 AbstractCegarLoop]: Abstraction has has 581 places, 582 transitions, 10144 flow [2024-06-28 01:48:58,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:58,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:48:58,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:48:58,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:48:58,566 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 01:48:58,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:48:58,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1629154672, now seen corresponding path program 1 times [2024-06-28 01:48:58,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:48:58,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782626222] [2024-06-28 01:48:58,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:48:58,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:48:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:48:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:48:59,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:48:59,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782626222] [2024-06-28 01:48:59,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782626222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:48:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:48:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:48:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349369962] [2024-06-28 01:48:59,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:48:59,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:48:59,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:48:59,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:48:59,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:48:59,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:48:59,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 581 places, 582 transitions, 10144 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:48:59,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:48:59,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:48:59,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:01,506 INFO L124 PetriNetUnfolderBase]: 3085/5971 cut-off events. [2024-06-28 01:49:01,506 INFO L125 PetriNetUnfolderBase]: For 154602/154702 co-relation queries the response was YES. [2024-06-28 01:49:01,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39443 conditions, 5971 events. 3085/5971 cut-off events. For 154602/154702 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 48157 event pairs, 959 based on Foata normal form. 102/5932 useless extension candidates. Maximal degree in co-relation 39188. Up to 4789 conditions per place. [2024-06-28 01:49:01,621 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 577 selfloop transitions, 42 changer transitions 0/629 dead transitions. [2024-06-28 01:49:01,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 592 places, 629 transitions, 11844 flow [2024-06-28 01:49:01,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:01,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:01,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 229 transitions. [2024-06-28 01:49:01,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5021929824561403 [2024-06-28 01:49:01,622 INFO L175 Difference]: Start difference. First operand has 581 places, 582 transitions, 10144 flow. Second operand 12 states and 229 transitions. [2024-06-28 01:49:01,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 592 places, 629 transitions, 11844 flow [2024-06-28 01:49:03,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 584 places, 629 transitions, 11582 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:03,644 INFO L231 Difference]: Finished difference. Result has 585 places, 584 transitions, 9997 flow [2024-06-28 01:49:03,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9882, PETRI_DIFFERENCE_MINUEND_PLACES=573, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9997, PETRI_PLACES=585, PETRI_TRANSITIONS=584} [2024-06-28 01:49:03,645 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 543 predicate places. [2024-06-28 01:49:03,645 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 584 transitions, 9997 flow [2024-06-28 01:49:03,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:03,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:03,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:03,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:49:03,645 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 01:49:03,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash 974124718, now seen corresponding path program 2 times [2024-06-28 01:49:03,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:03,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713996050] [2024-06-28 01:49:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:03,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:04,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:04,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:04,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713996050] [2024-06-28 01:49:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713996050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:04,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135966797] [2024-06-28 01:49:04,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:04,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:04,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:04,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:04,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:04,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:04,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 584 transitions, 9997 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:04,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:04,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:04,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:06,646 INFO L124 PetriNetUnfolderBase]: 3120/6026 cut-off events. [2024-06-28 01:49:06,647 INFO L125 PetriNetUnfolderBase]: For 165002/165096 co-relation queries the response was YES. [2024-06-28 01:49:06,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39534 conditions, 6026 events. 3120/6026 cut-off events. For 165002/165096 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 48608 event pairs, 1033 based on Foata normal form. 96/5983 useless extension candidates. Maximal degree in co-relation 39279. Up to 5066 conditions per place. [2024-06-28 01:49:06,758 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 576 selfloop transitions, 42 changer transitions 0/628 dead transitions. [2024-06-28 01:49:06,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 628 transitions, 11693 flow [2024-06-28 01:49:06,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:06,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:06,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 224 transitions. [2024-06-28 01:49:06,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-28 01:49:06,759 INFO L175 Difference]: Start difference. First operand has 585 places, 584 transitions, 9997 flow. Second operand 12 states and 224 transitions. [2024-06-28 01:49:06,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 628 transitions, 11693 flow [2024-06-28 01:49:08,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 628 transitions, 11620 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 01:49:08,951 INFO L231 Difference]: Finished difference. Result has 589 places, 586 transitions, 10043 flow [2024-06-28 01:49:08,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9932, PETRI_DIFFERENCE_MINUEND_PLACES=577, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10043, PETRI_PLACES=589, PETRI_TRANSITIONS=586} [2024-06-28 01:49:08,952 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 547 predicate places. [2024-06-28 01:49:08,952 INFO L495 AbstractCegarLoop]: Abstraction has has 589 places, 586 transitions, 10043 flow [2024-06-28 01:49:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:08,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:08,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:08,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:49:08,952 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 01:49:08,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash 967695628, now seen corresponding path program 3 times [2024-06-28 01:49:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:08,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705440852] [2024-06-28 01:49:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:09,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705440852] [2024-06-28 01:49:09,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705440852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:09,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:09,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:09,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752267717] [2024-06-28 01:49:09,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:09,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:09,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:09,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:09,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:09,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:09,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 589 places, 586 transitions, 10043 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:09,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:09,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:09,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:11,751 INFO L124 PetriNetUnfolderBase]: 3117/6025 cut-off events. [2024-06-28 01:49:11,752 INFO L125 PetriNetUnfolderBase]: For 155031/155129 co-relation queries the response was YES. [2024-06-28 01:49:11,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39302 conditions, 6025 events. 3117/6025 cut-off events. For 155031/155129 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 48598 event pairs, 993 based on Foata normal form. 100/5984 useless extension candidates. Maximal degree in co-relation 39045. Up to 4955 conditions per place. [2024-06-28 01:49:11,862 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 577 selfloop transitions, 43 changer transitions 0/630 dead transitions. [2024-06-28 01:49:11,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 630 transitions, 11723 flow [2024-06-28 01:49:11,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:11,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:11,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-28 01:49:11,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2024-06-28 01:49:11,863 INFO L175 Difference]: Start difference. First operand has 589 places, 586 transitions, 10043 flow. Second operand 12 states and 227 transitions. [2024-06-28 01:49:11,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 630 transitions, 11723 flow [2024-06-28 01:49:13,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 630 transitions, 11674 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:49:13,975 INFO L231 Difference]: Finished difference. Result has 594 places, 586 transitions, 10085 flow [2024-06-28 01:49:13,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9994, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10085, PETRI_PLACES=594, PETRI_TRANSITIONS=586} [2024-06-28 01:49:13,976 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 552 predicate places. [2024-06-28 01:49:13,976 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 586 transitions, 10085 flow [2024-06-28 01:49:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:13,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:13,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:13,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:49:13,977 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 01:49:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1835533620, now seen corresponding path program 4 times [2024-06-28 01:49:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965248001] [2024-06-28 01:49:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:14,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:14,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:14,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965248001] [2024-06-28 01:49:14,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965248001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:14,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:14,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:14,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92117126] [2024-06-28 01:49:14,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:14,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:14,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:14,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:15,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:15,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 586 transitions, 10085 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:15,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:15,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:15,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:16,899 INFO L124 PetriNetUnfolderBase]: 3114/6038 cut-off events. [2024-06-28 01:49:16,899 INFO L125 PetriNetUnfolderBase]: For 144392/144486 co-relation queries the response was YES. [2024-06-28 01:49:16,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39229 conditions, 6038 events. 3114/6038 cut-off events. For 144392/144486 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 48839 event pairs, 1045 based on Foata normal form. 96/5990 useless extension candidates. Maximal degree in co-relation 38970. Up to 5131 conditions per place. [2024-06-28 01:49:17,009 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 575 selfloop transitions, 41 changer transitions 0/626 dead transitions. [2024-06-28 01:49:17,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 626 transitions, 11523 flow [2024-06-28 01:49:17,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-28 01:49:17,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-28 01:49:17,011 INFO L175 Difference]: Start difference. First operand has 594 places, 586 transitions, 10085 flow. Second operand 12 states and 221 transitions. [2024-06-28 01:49:17,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 626 transitions, 11523 flow [2024-06-28 01:49:19,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 626 transitions, 11390 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 01:49:19,117 INFO L231 Difference]: Finished difference. Result has 594 places, 586 transitions, 10039 flow [2024-06-28 01:49:19,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10039, PETRI_PLACES=594, PETRI_TRANSITIONS=586} [2024-06-28 01:49:19,118 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 552 predicate places. [2024-06-28 01:49:19,118 INFO L495 AbstractCegarLoop]: Abstraction has has 594 places, 586 transitions, 10039 flow [2024-06-28 01:49:19,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:19,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:19,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:49:19,119 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 01:49:19,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2111831890, now seen corresponding path program 5 times [2024-06-28 01:49:19,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:19,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89419126] [2024-06-28 01:49:19,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:19,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:19,994 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 01:49:19,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:19,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89419126] [2024-06-28 01:49:19,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89419126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:19,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:19,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:19,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960304753] [2024-06-28 01:49:19,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:19,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:19,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:19,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:19,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:20,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:20,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 586 transitions, 10039 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:20,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:20,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:20,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:22,062 INFO L124 PetriNetUnfolderBase]: 3130/6030 cut-off events. [2024-06-28 01:49:22,062 INFO L125 PetriNetUnfolderBase]: For 145851/145950 co-relation queries the response was YES. [2024-06-28 01:49:22,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39113 conditions, 6030 events. 3130/6030 cut-off events. For 145851/145950 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 48583 event pairs, 1014 based on Foata normal form. 101/5994 useless extension candidates. Maximal degree in co-relation 38854. Up to 5023 conditions per place. [2024-06-28 01:49:22,174 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 580 selfloop transitions, 40 changer transitions 0/630 dead transitions. [2024-06-28 01:49:22,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 630 transitions, 11490 flow [2024-06-28 01:49:22,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:22,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:22,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 221 transitions. [2024-06-28 01:49:22,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48464912280701755 [2024-06-28 01:49:22,176 INFO L175 Difference]: Start difference. First operand has 594 places, 586 transitions, 10039 flow. Second operand 12 states and 221 transitions. [2024-06-28 01:49:22,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 630 transitions, 11490 flow [2024-06-28 01:49:24,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 630 transitions, 11404 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:49:24,073 INFO L231 Difference]: Finished difference. Result has 595 places, 587 transitions, 10055 flow [2024-06-28 01:49:24,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9953, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10055, PETRI_PLACES=595, PETRI_TRANSITIONS=587} [2024-06-28 01:49:24,081 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 553 predicate places. [2024-06-28 01:49:24,081 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 587 transitions, 10055 flow [2024-06-28 01:49:24,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:24,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:24,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:24,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:49:24,081 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 01:49:24,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:24,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1835524692, now seen corresponding path program 1 times [2024-06-28 01:49:24,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774865095] [2024-06-28 01:49:24,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:24,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:25,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:25,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774865095] [2024-06-28 01:49:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774865095] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:49:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552348575] [2024-06-28 01:49:25,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:25,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:49:25,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:25,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:49:25,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:49:25,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:25,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 587 transitions, 10055 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:25,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:25,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:25,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:27,346 INFO L124 PetriNetUnfolderBase]: 3182/6160 cut-off events. [2024-06-28 01:49:27,347 INFO L125 PetriNetUnfolderBase]: For 190076/190170 co-relation queries the response was YES. [2024-06-28 01:49:27,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40064 conditions, 6160 events. 3182/6160 cut-off events. For 190076/190170 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 49994 event pairs, 1075 based on Foata normal form. 102/6122 useless extension candidates. Maximal degree in co-relation 39804. Up to 5109 conditions per place. [2024-06-28 01:49:27,464 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 581 selfloop transitions, 44 changer transitions 0/635 dead transitions. [2024-06-28 01:49:27,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 635 transitions, 11639 flow [2024-06-28 01:49:27,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:49:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:49:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 242 transitions. [2024-06-28 01:49:27,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898785425101215 [2024-06-28 01:49:27,465 INFO L175 Difference]: Start difference. First operand has 595 places, 587 transitions, 10055 flow. Second operand 13 states and 242 transitions. [2024-06-28 01:49:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 635 transitions, 11639 flow [2024-06-28 01:49:29,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 635 transitions, 11551 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:29,655 INFO L231 Difference]: Finished difference. Result has 598 places, 587 transitions, 10063 flow [2024-06-28 01:49:29,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9967, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10063, PETRI_PLACES=598, PETRI_TRANSITIONS=587} [2024-06-28 01:49:29,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 556 predicate places. [2024-06-28 01:49:29,656 INFO L495 AbstractCegarLoop]: Abstraction has has 598 places, 587 transitions, 10063 flow [2024-06-28 01:49:29,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:29,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:29,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:29,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:49:29,656 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 01:49:29,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1567762498, now seen corresponding path program 6 times [2024-06-28 01:49:29,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:29,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704249556] [2024-06-28 01:49:29,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:29,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:30,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:30,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:30,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704249556] [2024-06-28 01:49:30,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704249556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:30,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:30,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:30,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396950124] [2024-06-28 01:49:30,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:30,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:30,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:30,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:30,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:30,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 587 transitions, 10063 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:30,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:30,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:30,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:32,606 INFO L124 PetriNetUnfolderBase]: 3214/6234 cut-off events. [2024-06-28 01:49:32,607 INFO L125 PetriNetUnfolderBase]: For 154481/154579 co-relation queries the response was YES. [2024-06-28 01:49:32,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40359 conditions, 6234 events. 3214/6234 cut-off events. For 154481/154579 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 50761 event pairs, 1058 based on Foata normal form. 100/6188 useless extension candidates. Maximal degree in co-relation 40098. Up to 5126 conditions per place. [2024-06-28 01:49:32,725 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 568 selfloop transitions, 55 changer transitions 0/633 dead transitions. [2024-06-28 01:49:32,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 609 places, 633 transitions, 11583 flow [2024-06-28 01:49:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:32,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 227 transitions. [2024-06-28 01:49:32,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2024-06-28 01:49:32,726 INFO L175 Difference]: Start difference. First operand has 598 places, 587 transitions, 10063 flow. Second operand 12 states and 227 transitions. [2024-06-28 01:49:32,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 609 places, 633 transitions, 11583 flow [2024-06-28 01:49:34,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 633 transitions, 11502 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 01:49:34,902 INFO L231 Difference]: Finished difference. Result has 600 places, 590 transitions, 10160 flow [2024-06-28 01:49:34,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=9982, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10160, PETRI_PLACES=600, PETRI_TRANSITIONS=590} [2024-06-28 01:49:34,903 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 558 predicate places. [2024-06-28 01:49:34,903 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 590 transitions, 10160 flow [2024-06-28 01:49:34,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:34,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:34,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:34,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:49:34,904 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 01:49:34,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:34,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1842685262, now seen corresponding path program 7 times [2024-06-28 01:49:34,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:34,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981918036] [2024-06-28 01:49:34,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:34,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:35,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:35,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981918036] [2024-06-28 01:49:35,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981918036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:35,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:35,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:35,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549976997] [2024-06-28 01:49:35,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:35,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:35,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:35,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:35,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:35,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 590 transitions, 10160 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:35,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:35,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:35,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:37,931 INFO L124 PetriNetUnfolderBase]: 3246/6298 cut-off events. [2024-06-28 01:49:37,932 INFO L125 PetriNetUnfolderBase]: For 156231/156329 co-relation queries the response was YES. [2024-06-28 01:49:38,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40963 conditions, 6298 events. 3246/6298 cut-off events. For 156231/156329 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 51340 event pairs, 1073 based on Foata normal form. 100/6250 useless extension candidates. Maximal degree in co-relation 40701. Up to 5188 conditions per place. [2024-06-28 01:49:38,052 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 573 selfloop transitions, 53 changer transitions 0/636 dead transitions. [2024-06-28 01:49:38,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 636 transitions, 11684 flow [2024-06-28 01:49:38,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:38,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 01:49:38,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-28 01:49:38,054 INFO L175 Difference]: Start difference. First operand has 600 places, 590 transitions, 10160 flow. Second operand 12 states and 230 transitions. [2024-06-28 01:49:38,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 636 transitions, 11684 flow [2024-06-28 01:49:40,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 605 places, 636 transitions, 11611 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:40,106 INFO L231 Difference]: Finished difference. Result has 606 places, 592 transitions, 10235 flow [2024-06-28 01:49:40,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10087, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10235, PETRI_PLACES=606, PETRI_TRANSITIONS=592} [2024-06-28 01:49:40,107 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 564 predicate places. [2024-06-28 01:49:40,107 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 592 transitions, 10235 flow [2024-06-28 01:49:40,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:40,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:40,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:40,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:49:40,108 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 01:49:40,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1818787406, now seen corresponding path program 8 times [2024-06-28 01:49:40,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:40,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951053269] [2024-06-28 01:49:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:40,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:40,964 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 01:49:40,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:40,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951053269] [2024-06-28 01:49:40,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951053269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:40,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:40,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:40,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663054634] [2024-06-28 01:49:40,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:40,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:40,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:40,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:40,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:41,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:41,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 592 transitions, 10235 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:41,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:41,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:41,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:43,250 INFO L124 PetriNetUnfolderBase]: 3281/6353 cut-off events. [2024-06-28 01:49:43,250 INFO L125 PetriNetUnfolderBase]: For 173310/173413 co-relation queries the response was YES. [2024-06-28 01:49:43,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41677 conditions, 6353 events. 3281/6353 cut-off events. For 173310/173413 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 51757 event pairs, 1070 based on Foata normal form. 105/6312 useless extension candidates. Maximal degree in co-relation 41413. Up to 5122 conditions per place. [2024-06-28 01:49:43,378 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 577 selfloop transitions, 54 changer transitions 0/641 dead transitions. [2024-06-28 01:49:43,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 641 transitions, 12015 flow [2024-06-28 01:49:43,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 234 transitions. [2024-06-28 01:49:43,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-28 01:49:43,380 INFO L175 Difference]: Start difference. First operand has 606 places, 592 transitions, 10235 flow. Second operand 12 states and 234 transitions. [2024-06-28 01:49:43,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 641 transitions, 12015 flow [2024-06-28 01:49:46,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 641 transitions, 11937 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:46,012 INFO L231 Difference]: Finished difference. Result has 612 places, 594 transitions, 10312 flow [2024-06-28 01:49:46,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10157, PETRI_DIFFERENCE_MINUEND_PLACES=600, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10312, PETRI_PLACES=612, PETRI_TRANSITIONS=594} [2024-06-28 01:49:46,012 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 570 predicate places. [2024-06-28 01:49:46,012 INFO L495 AbstractCegarLoop]: Abstraction has has 612 places, 594 transitions, 10312 flow [2024-06-28 01:49:46,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:46,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:46,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:46,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:49:46,013 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 01:49:46,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1812358316, now seen corresponding path program 9 times [2024-06-28 01:49:46,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:46,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601680372] [2024-06-28 01:49:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:46,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:46,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:46,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601680372] [2024-06-28 01:49:46,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601680372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:46,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:46,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:46,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065566735] [2024-06-28 01:49:46,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:46,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:46,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:46,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:46,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:46,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:46,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 594 transitions, 10312 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:46,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:46,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:46,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:48,965 INFO L124 PetriNetUnfolderBase]: 3278/6352 cut-off events. [2024-06-28 01:49:48,965 INFO L125 PetriNetUnfolderBase]: For 161602/161701 co-relation queries the response was YES. [2024-06-28 01:49:49,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41507 conditions, 6352 events. 3278/6352 cut-off events. For 161602/161701 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 51823 event pairs, 1097 based on Foata normal form. 101/6307 useless extension candidates. Maximal degree in co-relation 41241. Up to 5226 conditions per place. [2024-06-28 01:49:49,094 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 575 selfloop transitions, 54 changer transitions 0/639 dead transitions. [2024-06-28 01:49:49,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 639 transitions, 11828 flow [2024-06-28 01:49:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:49,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 01:49:49,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-28 01:49:49,096 INFO L175 Difference]: Start difference. First operand has 612 places, 594 transitions, 10312 flow. Second operand 12 states and 230 transitions. [2024-06-28 01:49:49,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 639 transitions, 11828 flow [2024-06-28 01:49:51,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 639 transitions, 11724 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 01:49:51,519 INFO L231 Difference]: Finished difference. Result has 618 places, 595 transitions, 10343 flow [2024-06-28 01:49:51,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10226, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10343, PETRI_PLACES=618, PETRI_TRANSITIONS=595} [2024-06-28 01:49:51,520 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 576 predicate places. [2024-06-28 01:49:51,520 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 595 transitions, 10343 flow [2024-06-28 01:49:51,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:51,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:51,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:51,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 01:49:51,520 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 01:49:51,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:51,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1849114352, now seen corresponding path program 10 times [2024-06-28 01:49:51,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:51,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5248982] [2024-06-28 01:49:51,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:51,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:52,280 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 01:49:52,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:52,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5248982] [2024-06-28 01:49:52,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5248982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:52,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:52,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:52,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154077420] [2024-06-28 01:49:52,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:52,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:52,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:52,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:52,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:52,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:52,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 595 transitions, 10343 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:52,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:52,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:52,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:49:54,428 INFO L124 PetriNetUnfolderBase]: 3294/6372 cut-off events. [2024-06-28 01:49:54,428 INFO L125 PetriNetUnfolderBase]: For 162162/162262 co-relation queries the response was YES. [2024-06-28 01:49:54,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41575 conditions, 6372 events. 3294/6372 cut-off events. For 162162/162262 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 51923 event pairs, 1076 based on Foata normal form. 102/6328 useless extension candidates. Maximal degree in co-relation 41307. Up to 5115 conditions per place. [2024-06-28 01:49:54,554 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 576 selfloop transitions, 55 changer transitions 0/641 dead transitions. [2024-06-28 01:49:54,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 641 transitions, 11865 flow [2024-06-28 01:49:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:49:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:49:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 230 transitions. [2024-06-28 01:49:54,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-28 01:49:54,555 INFO L175 Difference]: Start difference. First operand has 618 places, 595 transitions, 10343 flow. Second operand 12 states and 230 transitions. [2024-06-28 01:49:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 641 transitions, 11865 flow [2024-06-28 01:49:57,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 641 transitions, 11755 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:49:57,189 INFO L231 Difference]: Finished difference. Result has 620 places, 596 transitions, 10371 flow [2024-06-28 01:49:57,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10233, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10371, PETRI_PLACES=620, PETRI_TRANSITIONS=596} [2024-06-28 01:49:57,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 578 predicate places. [2024-06-28 01:49:57,190 INFO L495 AbstractCegarLoop]: Abstraction has has 620 places, 596 transitions, 10371 flow [2024-06-28 01:49:57,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:57,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:49:57,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:49:57,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 01:49:57,190 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 01:49:57,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:49:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1076148290, now seen corresponding path program 11 times [2024-06-28 01:49:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:49:57,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335663300] [2024-06-28 01:49:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:49:57,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:49:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:49:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:49:57,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:49:57,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335663300] [2024-06-28 01:49:57,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335663300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:49:57,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:49:57,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:49:57,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701049366] [2024-06-28 01:49:57,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:49:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:49:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:49:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:49:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:49:58,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:49:58,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 596 transitions, 10371 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:49:58,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:49:58,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:49:58,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:00,104 INFO L124 PetriNetUnfolderBase]: 3310/6376 cut-off events. [2024-06-28 01:50:00,105 INFO L125 PetriNetUnfolderBase]: For 165341/165448 co-relation queries the response was YES. [2024-06-28 01:50:00,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41830 conditions, 6376 events. 3310/6376 cut-off events. For 165341/165448 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 51815 event pairs, 1045 based on Foata normal form. 109/6345 useless extension candidates. Maximal degree in co-relation 41561. Up to 4845 conditions per place. [2024-06-28 01:50:00,235 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 575 selfloop transitions, 58 changer transitions 0/643 dead transitions. [2024-06-28 01:50:00,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 643 transitions, 11901 flow [2024-06-28 01:50:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:00,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-28 01:50:00,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-28 01:50:00,236 INFO L175 Difference]: Start difference. First operand has 620 places, 596 transitions, 10371 flow. Second operand 12 states and 231 transitions. [2024-06-28 01:50:00,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 643 transitions, 11901 flow [2024-06-28 01:50:02,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 643 transitions, 11773 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:02,780 INFO L231 Difference]: Finished difference. Result has 622 places, 597 transitions, 10389 flow [2024-06-28 01:50:02,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10243, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=538, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10389, PETRI_PLACES=622, PETRI_TRANSITIONS=597} [2024-06-28 01:50:02,781 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 580 predicate places. [2024-06-28 01:50:02,781 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 597 transitions, 10389 flow [2024-06-28 01:50:02,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:02,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:02,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:02,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 01:50:02,782 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 01:50:02,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:02,782 INFO L85 PathProgramCache]: Analyzing trace with hash -892394512, now seen corresponding path program 2 times [2024-06-28 01:50:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437666889] [2024-06-28 01:50:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:03,609 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 01:50:03,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:03,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437666889] [2024-06-28 01:50:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437666889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:03,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:50:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952483593] [2024-06-28 01:50:03,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:03,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:50:03,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:50:03,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:50:03,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:03,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 597 transitions, 10389 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:03,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:03,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:03,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:06,170 INFO L124 PetriNetUnfolderBase]: 3484/6793 cut-off events. [2024-06-28 01:50:06,171 INFO L125 PetriNetUnfolderBase]: For 259358/259450 co-relation queries the response was YES. [2024-06-28 01:50:06,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45300 conditions, 6793 events. 3484/6793 cut-off events. For 259358/259450 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 56324 event pairs, 1047 based on Foata normal form. 98/6740 useless extension candidates. Maximal degree in co-relation 45030. Up to 4880 conditions per place. [2024-06-28 01:50:06,320 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 478 selfloop transitions, 169 changer transitions 0/657 dead transitions. [2024-06-28 01:50:06,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 634 places, 657 transitions, 12387 flow [2024-06-28 01:50:06,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:50:06,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:50:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 251 transitions. [2024-06-28 01:50:06,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080971659919028 [2024-06-28 01:50:06,322 INFO L175 Difference]: Start difference. First operand has 622 places, 597 transitions, 10389 flow. Second operand 13 states and 251 transitions. [2024-06-28 01:50:06,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 634 places, 657 transitions, 12387 flow [2024-06-28 01:50:09,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 657 transitions, 12251 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:09,654 INFO L231 Difference]: Finished difference. Result has 626 places, 598 transitions, 10631 flow [2024-06-28 01:50:09,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10253, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10631, PETRI_PLACES=626, PETRI_TRANSITIONS=598} [2024-06-28 01:50:09,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 584 predicate places. [2024-06-28 01:50:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 626 places, 598 transitions, 10631 flow [2024-06-28 01:50:09,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:09,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:09,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:09,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 01:50:09,656 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 01:50:09,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash 504279980, now seen corresponding path program 3 times [2024-06-28 01:50:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:09,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889356546] [2024-06-28 01:50:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:09,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:10,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:10,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:10,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889356546] [2024-06-28 01:50:10,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889356546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:10,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:10,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:50:10,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318968376] [2024-06-28 01:50:10,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:10,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:50:10,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:10,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:50:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:50:10,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:10,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 598 transitions, 10631 flow. Second operand has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:10,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:10,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:10,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:13,156 INFO L124 PetriNetUnfolderBase]: 3536/6977 cut-off events. [2024-06-28 01:50:13,156 INFO L125 PetriNetUnfolderBase]: For 287560/287652 co-relation queries the response was YES. [2024-06-28 01:50:13,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46424 conditions, 6977 events. 3536/6977 cut-off events. For 287560/287652 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 58667 event pairs, 1148 based on Foata normal form. 100/6897 useless extension candidates. Maximal degree in co-relation 46152. Up to 5410 conditions per place. [2024-06-28 01:50:13,315 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 474 selfloop transitions, 169 changer transitions 0/653 dead transitions. [2024-06-28 01:50:13,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 653 transitions, 12313 flow [2024-06-28 01:50:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:50:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:50:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-06-28 01:50:13,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020242914979757 [2024-06-28 01:50:13,316 INFO L175 Difference]: Start difference. First operand has 626 places, 598 transitions, 10631 flow. Second operand 13 states and 248 transitions. [2024-06-28 01:50:13,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 653 transitions, 12313 flow [2024-06-28 01:50:16,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 653 transitions, 12051 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:16,851 INFO L231 Difference]: Finished difference. Result has 630 places, 598 transitions, 10711 flow [2024-06-28 01:50:16,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10711, PETRI_PLACES=630, PETRI_TRANSITIONS=598} [2024-06-28 01:50:16,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 588 predicate places. [2024-06-28 01:50:16,851 INFO L495 AbstractCegarLoop]: Abstraction has has 630 places, 598 transitions, 10711 flow [2024-06-28 01:50:16,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.23076923076923) internal successors, (159), 13 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:16,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:16,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:16,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 01:50:16,852 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 01:50:16,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:16,852 INFO L85 PathProgramCache]: Analyzing trace with hash -565512428, now seen corresponding path program 12 times [2024-06-28 01:50:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:16,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299092052] [2024-06-28 01:50:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:17,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:17,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:17,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299092052] [2024-06-28 01:50:17,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299092052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:17,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:17,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:17,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902334868] [2024-06-28 01:50:17,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:17,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:17,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:17,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:17,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:18,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:18,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 598 transitions, 10711 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:18,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:18,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:18,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:20,206 INFO L124 PetriNetUnfolderBase]: 3566/6871 cut-off events. [2024-06-28 01:50:20,206 INFO L125 PetriNetUnfolderBase]: For 250555/250654 co-relation queries the response was YES. [2024-06-28 01:50:20,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46801 conditions, 6871 events. 3566/6871 cut-off events. For 250555/250654 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 56783 event pairs, 1174 based on Foata normal form. 101/6834 useless extension candidates. Maximal degree in co-relation 46528. Up to 5786 conditions per place. [2024-06-28 01:50:20,363 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 575 selfloop transitions, 61 changer transitions 0/646 dead transitions. [2024-06-28 01:50:20,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 646 transitions, 12288 flow [2024-06-28 01:50:20,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 223 transitions. [2024-06-28 01:50:20,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48903508771929827 [2024-06-28 01:50:20,364 INFO L175 Difference]: Start difference. First operand has 630 places, 598 transitions, 10711 flow. Second operand 12 states and 223 transitions. [2024-06-28 01:50:20,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 646 transitions, 12288 flow [2024-06-28 01:50:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 646 transitions, 11993 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:23,710 INFO L231 Difference]: Finished difference. Result has 633 places, 601 transitions, 10658 flow [2024-06-28 01:50:23,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10416, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10658, PETRI_PLACES=633, PETRI_TRANSITIONS=601} [2024-06-28 01:50:23,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 591 predicate places. [2024-06-28 01:50:23,714 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 601 transitions, 10658 flow [2024-06-28 01:50:23,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:23,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:23,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 01:50:23,715 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 01:50:23,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1458063416, now seen corresponding path program 13 times [2024-06-28 01:50:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:23,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879397746] [2024-06-28 01:50:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:24,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:24,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879397746] [2024-06-28 01:50:24,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879397746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:24,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:24,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181422864] [2024-06-28 01:50:24,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:24,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:24,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:24,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:24,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:24,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:24,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 601 transitions, 10658 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:24,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:24,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:24,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:26,997 INFO L124 PetriNetUnfolderBase]: 3653/7062 cut-off events. [2024-06-28 01:50:26,997 INFO L125 PetriNetUnfolderBase]: For 270225/270325 co-relation queries the response was YES. [2024-06-28 01:50:27,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47814 conditions, 7062 events. 3653/7062 cut-off events. For 270225/270325 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 58826 event pairs, 1180 based on Foata normal form. 102/7017 useless extension candidates. Maximal degree in co-relation 47539. Up to 5718 conditions per place. [2024-06-28 01:50:27,153 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 572 selfloop transitions, 75 changer transitions 0/657 dead transitions. [2024-06-28 01:50:27,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 657 transitions, 12531 flow [2024-06-28 01:50:27,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:50:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:50:27,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 231 transitions. [2024-06-28 01:50:27,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-28 01:50:27,154 INFO L175 Difference]: Start difference. First operand has 633 places, 601 transitions, 10658 flow. Second operand 12 states and 231 transitions. [2024-06-28 01:50:27,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 657 transitions, 12531 flow [2024-06-28 01:50:31,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 657 transitions, 12337 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:50:31,513 INFO L231 Difference]: Finished difference. Result has 638 places, 608 transitions, 10746 flow [2024-06-28 01:50:31,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10464, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10746, PETRI_PLACES=638, PETRI_TRANSITIONS=608} [2024-06-28 01:50:31,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 596 predicate places. [2024-06-28 01:50:31,514 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 608 transitions, 10746 flow [2024-06-28 01:50:31,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:31,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:31,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:31,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 01:50:31,515 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 01:50:31,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash -463722224, now seen corresponding path program 14 times [2024-06-28 01:50:31,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:31,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611650683] [2024-06-28 01:50:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:32,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:32,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:32,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611650683] [2024-06-28 01:50:32,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611650683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:32,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:32,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:32,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025423990] [2024-06-28 01:50:32,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:32,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:32,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:32,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:32,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 608 transitions, 10746 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:32,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:32,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:32,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:34,942 INFO L124 PetriNetUnfolderBase]: 3818/7378 cut-off events. [2024-06-28 01:50:34,943 INFO L125 PetriNetUnfolderBase]: For 369753/369851 co-relation queries the response was YES. [2024-06-28 01:50:35,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50970 conditions, 7378 events. 3818/7378 cut-off events. For 369753/369851 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 61926 event pairs, 1270 based on Foata normal form. 106/7341 useless extension candidates. Maximal degree in co-relation 50692. Up to 5778 conditions per place. [2024-06-28 01:50:35,116 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 594 selfloop transitions, 57 changer transitions 0/661 dead transitions. [2024-06-28 01:50:35,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 661 transitions, 12724 flow [2024-06-28 01:50:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:50:35,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:50:35,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 248 transitions. [2024-06-28 01:50:35,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5020242914979757 [2024-06-28 01:50:35,120 INFO L175 Difference]: Start difference. First operand has 638 places, 608 transitions, 10746 flow. Second operand 13 states and 248 transitions. [2024-06-28 01:50:35,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 661 transitions, 12724 flow [2024-06-28 01:50:40,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 643 places, 661 transitions, 12588 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-28 01:50:40,010 INFO L231 Difference]: Finished difference. Result has 644 places, 608 transitions, 10748 flow [2024-06-28 01:50:40,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10630, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10748, PETRI_PLACES=644, PETRI_TRANSITIONS=608} [2024-06-28 01:50:40,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 602 predicate places. [2024-06-28 01:50:40,013 INFO L495 AbstractCegarLoop]: Abstraction has has 644 places, 608 transitions, 10748 flow [2024-06-28 01:50:40,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:40,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:40,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 01:50:40,014 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 01:50:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -457293134, now seen corresponding path program 15 times [2024-06-28 01:50:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088367789] [2024-06-28 01:50:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:40,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088367789] [2024-06-28 01:50:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088367789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:40,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671588841] [2024-06-28 01:50:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:40,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:40,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:40,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 608 transitions, 10748 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:40,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:40,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:40,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:44,075 INFO L124 PetriNetUnfolderBase]: 3870/7484 cut-off events. [2024-06-28 01:50:44,075 INFO L125 PetriNetUnfolderBase]: For 373976/374070 co-relation queries the response was YES. [2024-06-28 01:50:44,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51488 conditions, 7484 events. 3870/7484 cut-off events. For 373976/374070 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 63002 event pairs, 1356 based on Foata normal form. 102/7443 useless extension candidates. Maximal degree in co-relation 51208. Up to 5986 conditions per place. [2024-06-28 01:50:44,238 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 592 selfloop transitions, 57 changer transitions 0/659 dead transitions. [2024-06-28 01:50:44,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 659 transitions, 12698 flow [2024-06-28 01:50:44,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:50:44,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:50:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 245 transitions. [2024-06-28 01:50:44,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959514170040486 [2024-06-28 01:50:44,240 INFO L175 Difference]: Start difference. First operand has 644 places, 608 transitions, 10748 flow. Second operand 13 states and 245 transitions. [2024-06-28 01:50:44,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 659 transitions, 12698 flow [2024-06-28 01:50:48,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 659 transitions, 12598 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:50:48,453 INFO L231 Difference]: Finished difference. Result has 647 places, 608 transitions, 10766 flow [2024-06-28 01:50:48,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10648, PETRI_DIFFERENCE_MINUEND_PLACES=634, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10766, PETRI_PLACES=647, PETRI_TRANSITIONS=608} [2024-06-28 01:50:48,454 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 605 predicate places. [2024-06-28 01:50:48,454 INFO L495 AbstractCegarLoop]: Abstraction has has 647 places, 608 transitions, 10766 flow [2024-06-28 01:50:48,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:48,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:48,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:48,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 01:50:48,455 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 01:50:48,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:48,455 INFO L85 PathProgramCache]: Analyzing trace with hash -457055984, now seen corresponding path program 16 times [2024-06-28 01:50:48,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:48,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179715156] [2024-06-28 01:50:48,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:48,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:49,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:49,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179715156] [2024-06-28 01:50:49,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179715156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:49,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:49,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:49,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289286056] [2024-06-28 01:50:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:49,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:49,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:49,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:49,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:49,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:49,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 608 transitions, 10766 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:49,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:49,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:50:52,430 INFO L124 PetriNetUnfolderBase]: 3850/7466 cut-off events. [2024-06-28 01:50:52,431 INFO L125 PetriNetUnfolderBase]: For 320279/320373 co-relation queries the response was YES. [2024-06-28 01:50:52,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49309 conditions, 7466 events. 3850/7466 cut-off events. For 320279/320373 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 63005 event pairs, 1410 based on Foata normal form. 110/7430 useless extension candidates. Maximal degree in co-relation 49028. Up to 6160 conditions per place. [2024-06-28 01:50:52,579 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 587 selfloop transitions, 57 changer transitions 0/654 dead transitions. [2024-06-28 01:50:52,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 654 transitions, 12387 flow [2024-06-28 01:50:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:50:52,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:50:52,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 240 transitions. [2024-06-28 01:50:52,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48582995951417 [2024-06-28 01:50:52,581 INFO L175 Difference]: Start difference. First operand has 647 places, 608 transitions, 10766 flow. Second operand 13 states and 240 transitions. [2024-06-28 01:50:52,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 654 transitions, 12387 flow [2024-06-28 01:50:56,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 654 transitions, 12245 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 01:50:56,093 INFO L231 Difference]: Finished difference. Result has 649 places, 608 transitions, 10760 flow [2024-06-28 01:50:56,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10638, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10760, PETRI_PLACES=649, PETRI_TRANSITIONS=608} [2024-06-28 01:50:56,094 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 607 predicate places. [2024-06-28 01:50:56,094 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 608 transitions, 10760 flow [2024-06-28 01:50:56,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:56,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:50:56,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:50:56,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 01:50:56,094 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 01:50:56,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:50:56,095 INFO L85 PathProgramCache]: Analyzing trace with hash -848073204, now seen corresponding path program 17 times [2024-06-28 01:50:56,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:50:56,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664261531] [2024-06-28 01:50:56,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:50:56,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:50:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:50:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:50:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:50:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664261531] [2024-06-28 01:50:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664261531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:50:56,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:50:56,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:50:56,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596468877] [2024-06-28 01:50:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:50:56,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:50:56,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:50:56,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:50:56,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:50:57,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:50:57,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 608 transitions, 10760 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:50:57,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:50:57,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:50:57,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:00,247 INFO L124 PetriNetUnfolderBase]: 3886/7469 cut-off events. [2024-06-28 01:51:00,248 INFO L125 PetriNetUnfolderBase]: For 216365/216473 co-relation queries the response was YES. [2024-06-28 01:51:00,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49323 conditions, 7469 events. 3886/7469 cut-off events. For 216365/216473 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 62576 event pairs, 1375 based on Foata normal form. 110/7436 useless extension candidates. Maximal degree in co-relation 49041. Up to 6342 conditions per place. [2024-06-28 01:51:00,399 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 579 selfloop transitions, 67 changer transitions 0/656 dead transitions. [2024-06-28 01:51:00,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 656 transitions, 12300 flow [2024-06-28 01:51:00,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:00,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 222 transitions. [2024-06-28 01:51:00,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2024-06-28 01:51:00,400 INFO L175 Difference]: Start difference. First operand has 649 places, 608 transitions, 10760 flow. Second operand 12 states and 222 transitions. [2024-06-28 01:51:00,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 656 transitions, 12300 flow [2024-06-28 01:51:03,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 656 transitions, 12190 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 01:51:03,829 INFO L231 Difference]: Finished difference. Result has 650 places, 611 transitions, 10840 flow [2024-06-28 01:51:03,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10650, PETRI_DIFFERENCE_MINUEND_PLACES=638, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10840, PETRI_PLACES=650, PETRI_TRANSITIONS=611} [2024-06-28 01:51:03,829 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 608 predicate places. [2024-06-28 01:51:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 650 places, 611 transitions, 10840 flow [2024-06-28 01:51:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:03,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:03,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:03,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 01:51:03,830 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 01:51:03,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:03,830 INFO L85 PathProgramCache]: Analyzing trace with hash -790729008, now seen corresponding path program 18 times [2024-06-28 01:51:03,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:03,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482418939] [2024-06-28 01:51:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:03,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:03,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:04,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:04,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482418939] [2024-06-28 01:51:04,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482418939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:04,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:04,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:04,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748050326] [2024-06-28 01:51:04,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:04,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:04,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:04,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 611 transitions, 10840 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:04,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:04,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:07,748 INFO L124 PetriNetUnfolderBase]: 3906/7507 cut-off events. [2024-06-28 01:51:07,749 INFO L125 PetriNetUnfolderBase]: For 218819/218927 co-relation queries the response was YES. [2024-06-28 01:51:07,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49823 conditions, 7507 events. 3906/7507 cut-off events. For 218819/218927 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 62942 event pairs, 1345 based on Foata normal form. 110/7473 useless extension candidates. Maximal degree in co-relation 49540. Up to 6045 conditions per place. [2024-06-28 01:51:07,901 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 574 selfloop transitions, 70 changer transitions 0/654 dead transitions. [2024-06-28 01:51:07,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 654 transitions, 12364 flow [2024-06-28 01:51:07,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:07,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-28 01:51:07,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880382775119617 [2024-06-28 01:51:07,902 INFO L175 Difference]: Start difference. First operand has 650 places, 611 transitions, 10840 flow. Second operand 11 states and 204 transitions. [2024-06-28 01:51:07,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 654 transitions, 12364 flow [2024-06-28 01:51:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 654 transitions, 12212 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:11,187 INFO L231 Difference]: Finished difference. Result has 651 places, 613 transitions, 10888 flow [2024-06-28 01:51:11,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10688, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10888, PETRI_PLACES=651, PETRI_TRANSITIONS=613} [2024-06-28 01:51:11,188 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 609 predicate places. [2024-06-28 01:51:11,188 INFO L495 AbstractCegarLoop]: Abstraction has has 651 places, 613 transitions, 10888 flow [2024-06-28 01:51:11,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:11,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:11,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:11,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 01:51:11,188 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 01:51:11,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:11,189 INFO L85 PathProgramCache]: Analyzing trace with hash -992659570, now seen corresponding path program 19 times [2024-06-28 01:51:11,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:11,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112628373] [2024-06-28 01:51:11,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:11,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:12,065 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 01:51:12,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:12,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112628373] [2024-06-28 01:51:12,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112628373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731225715] [2024-06-28 01:51:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:12,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:12,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:12,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:12,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 613 transitions, 10888 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:12,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:12,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:12,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:15,257 INFO L124 PetriNetUnfolderBase]: 3941/7662 cut-off events. [2024-06-28 01:51:15,257 INFO L125 PetriNetUnfolderBase]: For 240351/240443 co-relation queries the response was YES. [2024-06-28 01:51:15,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50960 conditions, 7662 events. 3941/7662 cut-off events. For 240351/240443 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 65010 event pairs, 1466 based on Foata normal form. 94/7601 useless extension candidates. Maximal degree in co-relation 50676. Up to 6360 conditions per place. [2024-06-28 01:51:15,435 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 580 selfloop transitions, 68 changer transitions 0/658 dead transitions. [2024-06-28 01:51:15,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 658 transitions, 12738 flow [2024-06-28 01:51:15,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:15,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:15,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-28 01:51:15,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49760765550239233 [2024-06-28 01:51:15,437 INFO L175 Difference]: Start difference. First operand has 651 places, 613 transitions, 10888 flow. Second operand 11 states and 208 transitions. [2024-06-28 01:51:15,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 658 transitions, 12738 flow [2024-06-28 01:51:19,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 658 transitions, 12564 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-28 01:51:19,463 INFO L231 Difference]: Finished difference. Result has 653 places, 617 transitions, 10950 flow [2024-06-28 01:51:19,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10726, PETRI_DIFFERENCE_MINUEND_PLACES=642, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10950, PETRI_PLACES=653, PETRI_TRANSITIONS=617} [2024-06-28 01:51:19,464 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 611 predicate places. [2024-06-28 01:51:19,464 INFO L495 AbstractCegarLoop]: Abstraction has has 653 places, 617 transitions, 10950 flow [2024-06-28 01:51:19,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:19,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:19,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:19,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 01:51:19,465 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 01:51:19,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash -514430738, now seen corresponding path program 20 times [2024-06-28 01:51:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554995648] [2024-06-28 01:51:19,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:20,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:20,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:20,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554995648] [2024-06-28 01:51:20,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554995648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:20,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:20,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:20,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101839904] [2024-06-28 01:51:20,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:20,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:20,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:20,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:20,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 653 places, 617 transitions, 10950 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:20,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:20,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:23,596 INFO L124 PetriNetUnfolderBase]: 3938/7683 cut-off events. [2024-06-28 01:51:23,596 INFO L125 PetriNetUnfolderBase]: For 220864/220956 co-relation queries the response was YES. [2024-06-28 01:51:23,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50545 conditions, 7683 events. 3938/7683 cut-off events. For 220864/220956 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 65430 event pairs, 1529 based on Foata normal form. 94/7619 useless extension candidates. Maximal degree in co-relation 50260. Up to 6540 conditions per place. [2024-06-28 01:51:23,770 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 582 selfloop transitions, 64 changer transitions 0/656 dead transitions. [2024-06-28 01:51:23,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 656 transitions, 12450 flow [2024-06-28 01:51:23,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:23,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 205 transitions. [2024-06-28 01:51:23,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904306220095694 [2024-06-28 01:51:23,771 INFO L175 Difference]: Start difference. First operand has 653 places, 617 transitions, 10950 flow. Second operand 11 states and 205 transitions. [2024-06-28 01:51:23,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 656 transitions, 12450 flow [2024-06-28 01:51:27,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 656 transitions, 12321 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:27,190 INFO L231 Difference]: Finished difference. Result has 656 places, 617 transitions, 10959 flow [2024-06-28 01:51:27,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10821, PETRI_DIFFERENCE_MINUEND_PLACES=645, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10959, PETRI_PLACES=656, PETRI_TRANSITIONS=617} [2024-06-28 01:51:27,191 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 614 predicate places. [2024-06-28 01:51:27,191 INFO L495 AbstractCegarLoop]: Abstraction has has 656 places, 617 transitions, 10959 flow [2024-06-28 01:51:27,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:27,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:27,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:27,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 01:51:27,192 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 01:51:27,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:27,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1037842572, now seen corresponding path program 21 times [2024-06-28 01:51:27,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:27,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531187458] [2024-06-28 01:51:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:27,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:28,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531187458] [2024-06-28 01:51:28,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531187458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:28,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:28,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:28,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637011000] [2024-06-28 01:51:28,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:28,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:28,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:28,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:28,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:28,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 617 transitions, 10959 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:28,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:28,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:28,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:31,598 INFO L124 PetriNetUnfolderBase]: 4276/8305 cut-off events. [2024-06-28 01:51:31,598 INFO L125 PetriNetUnfolderBase]: For 243060/243190 co-relation queries the response was YES. [2024-06-28 01:51:31,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55672 conditions, 8305 events. 4276/8305 cut-off events. For 243060/243190 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 71713 event pairs, 1476 based on Foata normal form. 132/8267 useless extension candidates. Maximal degree in co-relation 55386. Up to 6629 conditions per place. [2024-06-28 01:51:31,773 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 628 selfloop transitions, 108 changer transitions 0/746 dead transitions. [2024-06-28 01:51:31,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 667 places, 746 transitions, 14921 flow [2024-06-28 01:51:31,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:51:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:51:31,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 225 transitions. [2024-06-28 01:51:31,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2024-06-28 01:51:31,775 INFO L175 Difference]: Start difference. First operand has 656 places, 617 transitions, 10959 flow. Second operand 12 states and 225 transitions. [2024-06-28 01:51:31,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 667 places, 746 transitions, 14921 flow [2024-06-28 01:51:36,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 746 transitions, 14731 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 01:51:36,516 INFO L231 Difference]: Finished difference. Result has 663 places, 679 transitions, 12637 flow [2024-06-28 01:51:36,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=10823, PETRI_DIFFERENCE_MINUEND_PLACES=646, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12637, PETRI_PLACES=663, PETRI_TRANSITIONS=679} [2024-06-28 01:51:36,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 621 predicate places. [2024-06-28 01:51:36,517 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 679 transitions, 12637 flow [2024-06-28 01:51:36,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:36,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:36,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:36,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 01:51:36,517 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 01:51:36,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash -521096978, now seen corresponding path program 22 times [2024-06-28 01:51:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97440393] [2024-06-28 01:51:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97440393] [2024-06-28 01:51:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97440393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:37,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030381717] [2024-06-28 01:51:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:37,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:37,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:37,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:37,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:37,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 679 transitions, 12637 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:37,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:37,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:37,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:40,880 INFO L124 PetriNetUnfolderBase]: 4281/8389 cut-off events. [2024-06-28 01:51:40,880 INFO L125 PetriNetUnfolderBase]: For 233184/233311 co-relation queries the response was YES. [2024-06-28 01:51:41,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56215 conditions, 8389 events. 4281/8389 cut-off events. For 233184/233311 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 72960 event pairs, 1487 based on Foata normal form. 129/8334 useless extension candidates. Maximal degree in co-relation 55923. Up to 6491 conditions per place. [2024-06-28 01:51:41,070 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 622 selfloop transitions, 93 changer transitions 0/725 dead transitions. [2024-06-28 01:51:41,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 725 transitions, 14350 flow [2024-06-28 01:51:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:41,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:51:41,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:51:41,071 INFO L175 Difference]: Start difference. First operand has 663 places, 679 transitions, 12637 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:51:41,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 725 transitions, 14350 flow [2024-06-28 01:51:45,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 725 transitions, 14254 flow, removed 47 selfloop flow, removed 1 redundant places. [2024-06-28 01:51:45,518 INFO L231 Difference]: Finished difference. Result has 674 places, 683 transitions, 12822 flow [2024-06-28 01:51:45,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12565, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12822, PETRI_PLACES=674, PETRI_TRANSITIONS=683} [2024-06-28 01:51:45,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 632 predicate places. [2024-06-28 01:51:45,519 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 683 transitions, 12822 flow [2024-06-28 01:51:45,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:45,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:45,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:45,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 01:51:45,519 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 01:51:45,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:45,520 INFO L85 PathProgramCache]: Analyzing trace with hash -611232176, now seen corresponding path program 23 times [2024-06-28 01:51:45,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:45,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097295442] [2024-06-28 01:51:45,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:45,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097295442] [2024-06-28 01:51:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097295442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:46,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396935651] [2024-06-28 01:51:46,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:46,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:46,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:46,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:46,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 683 transitions, 12822 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:46,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:46,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:46,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:49,820 INFO L124 PetriNetUnfolderBase]: 4316/8461 cut-off events. [2024-06-28 01:51:49,820 INFO L125 PetriNetUnfolderBase]: For 254481/254610 co-relation queries the response was YES. [2024-06-28 01:51:49,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57400 conditions, 8461 events. 4316/8461 cut-off events. For 254481/254610 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 73825 event pairs, 1746 based on Foata normal form. 131/8408 useless extension candidates. Maximal degree in co-relation 57104. Up to 6951 conditions per place. [2024-06-28 01:51:50,001 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 641 selfloop transitions, 76 changer transitions 0/727 dead transitions. [2024-06-28 01:51:50,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 727 transitions, 14816 flow [2024-06-28 01:51:50,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:50,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-28 01:51:50,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095693779904307 [2024-06-28 01:51:50,002 INFO L175 Difference]: Start difference. First operand has 674 places, 683 transitions, 12822 flow. Second operand 11 states and 213 transitions. [2024-06-28 01:51:50,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 727 transitions, 14816 flow [2024-06-28 01:51:54,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 727 transitions, 14649 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:51:54,905 INFO L231 Difference]: Finished difference. Result has 677 places, 685 transitions, 12886 flow [2024-06-28 01:51:54,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12657, PETRI_DIFFERENCE_MINUEND_PLACES=666, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12886, PETRI_PLACES=677, PETRI_TRANSITIONS=685} [2024-06-28 01:51:54,905 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 635 predicate places. [2024-06-28 01:51:54,906 INFO L495 AbstractCegarLoop]: Abstraction has has 677 places, 685 transitions, 12886 flow [2024-06-28 01:51:54,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:54,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:51:54,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:51:54,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 01:51:54,906 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 01:51:54,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:51:54,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1088986708, now seen corresponding path program 24 times [2024-06-28 01:51:54,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:51:54,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51492692] [2024-06-28 01:51:54,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:51:54,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:51:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:51:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:51:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:51:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51492692] [2024-06-28 01:51:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51492692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:51:55,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:51:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:51:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879670423] [2024-06-28 01:51:55,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:51:55,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:51:55,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:51:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:51:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:51:55,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-06-28 01:51:55,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 685 transitions, 12886 flow. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:51:55,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:51:55,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-06-28 01:51:55,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:51:59,275 INFO L124 PetriNetUnfolderBase]: 4313/8486 cut-off events. [2024-06-28 01:51:59,275 INFO L125 PetriNetUnfolderBase]: For 238093/238222 co-relation queries the response was YES. [2024-06-28 01:51:59,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57114 conditions, 8486 events. 4313/8486 cut-off events. For 238093/238222 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 74238 event pairs, 1769 based on Foata normal form. 131/8427 useless extension candidates. Maximal degree in co-relation 56818. Up to 7071 conditions per place. [2024-06-28 01:51:59,455 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 641 selfloop transitions, 74 changer transitions 0/725 dead transitions. [2024-06-28 01:51:59,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 725 transitions, 14542 flow [2024-06-28 01:51:59,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:51:59,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:51:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-28 01:51:59,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023923444976076 [2024-06-28 01:51:59,457 INFO L175 Difference]: Start difference. First operand has 677 places, 685 transitions, 12886 flow. Second operand 11 states and 210 transitions. [2024-06-28 01:51:59,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 725 transitions, 14542 flow [2024-06-28 01:52:03,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 725 transitions, 14358 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-28 01:52:03,872 INFO L231 Difference]: Finished difference. Result has 681 places, 685 transitions, 12856 flow [2024-06-28 01:52:03,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=12702, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12856, PETRI_PLACES=681, PETRI_TRANSITIONS=685} [2024-06-28 01:52:03,873 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 639 predicate places. [2024-06-28 01:52:03,873 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 685 transitions, 12856 flow [2024-06-28 01:52:03,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 12 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:52:03,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:52:03,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:52:03,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 01:52:03,873 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 01:52:03,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:52:03,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1119550804, now seen corresponding path program 25 times [2024-06-28 01:52:03,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:52:03,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688209908] [2024-06-28 01:52:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:52:03,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:52:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat