./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:42:55,295 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:42:55,364 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:42:55,369 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:42:55,370 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:42:55,393 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:42:55,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:42:55,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:42:55,394 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:42:55,397 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:42:55,398 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:42:55,398 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:42:55,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:42:55,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:42:55,400 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:42:55,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:42:55,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:42:55,401 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:42:55,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:42:55,401 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:42:55,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:42:55,401 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:42:55,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:42:55,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:42:55,402 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:42:55,402 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:42:55,402 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:42:55,403 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:42:55,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:42:55,403 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:42:55,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:42:55,404 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:42:55,404 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:42:55,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:42:55,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:42:55,405 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:42:55,405 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:42:55,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:42:55,405 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:42:55,406 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:42:55,406 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:42:55,406 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:42:55,406 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:42:55,406 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:42:55,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:42:55,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:42:55,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:42:55,668 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:42:55,669 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:42:55,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi000_power.opt_pso.opt_rmo.opt.yml/witness.yml [2024-06-28 01:42:55,829 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:42:55,830 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:42:55,830 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:42:56,847 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:42:57,111 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:42:57,115 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:42:57,138 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634c0d43a/e0c2ff5b395943c9bf0867c03ebc4131/FLAG5c75343fd [2024-06-28 01:42:57,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/634c0d43a/e0c2ff5b395943c9bf0867c03ebc4131 [2024-06-28 01:42:57,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:42:57,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:42:57,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:42:57,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:42:57,165 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:42:57,165 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:55" (1/2) ... [2024-06-28 01:42:57,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5e9bc6 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:42:57, skipping insertion in model container [2024-06-28 01:42:57,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:55" (1/2) ... [2024-06-28 01:42:57,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66e1c6f9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:42:57, skipping insertion in model container [2024-06-28 01:42:57,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:42:57" (2/2) ... [2024-06-28 01:42:57,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d5e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57, skipping insertion in model container [2024-06-28 01:42:57,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:42:57" (2/2) ... [2024-06-28 01:42:57,170 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:42:57,226 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:42:57,227 INFO L97 edCorrectnessWitness]: Location invariant before [L804-L804] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:42:57,228 INFO L97 edCorrectnessWitness]: Location invariant before [L803-L803] ((((((((((((((! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2)) && ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 01:42:57,228 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:42:57,228 INFO L106 edCorrectnessWitness]: ghost_update [L801-L801] multithreaded = 1; [2024-06-28 01:42:57,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:42:57,390 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] [2024-06-28 01:42:57,586 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:42:57,593 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-28 01:42:57,631 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi000_power.opt_pso.opt_rmo.opt.i[966,979] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:42:57,692 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:42:57,728 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:42:57,729 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57 WrapperNode [2024-06-28 01:42:57,729 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:42:57,730 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:42:57,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:42:57,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:42:57,736 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,797 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 134 [2024-06-28 01:42:57,803 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:42:57,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:42:57,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:42:57,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:42:57,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,842 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 01:42:57,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,848 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,856 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,866 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,874 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:42:57,876 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:42:57,876 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:42:57,876 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:42:57,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (1/1) ... [2024-06-28 01:42:57,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:42:57,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:42:57,902 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 01:42:57,924 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 01:42:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 01:42:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:42:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 01:42:57,932 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 01:42:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 01:42:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 01:42:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:42:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 01:42:57,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:42:57,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:42:57,934 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 01:42:58,071 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:42:58,073 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:42:58,340 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:42:58,340 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:42:58,446 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:42:58,446 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:42:58,447 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:42:58 BoogieIcfgContainer [2024-06-28 01:42:58,447 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:42:58,449 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:42:58,449 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:42:58,451 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:42:58,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:42:55" (1/4) ... [2024-06-28 01:42:58,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89f200a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:42:58, skipping insertion in model container [2024-06-28 01:42:58,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:42:57" (2/4) ... [2024-06-28 01:42:58,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89f200a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:42:58, skipping insertion in model container [2024-06-28 01:42:58,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:42:57" (3/4) ... [2024-06-28 01:42:58,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@89f200a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:42:58, skipping insertion in model container [2024-06-28 01:42:58,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:42:58" (4/4) ... [2024-06-28 01:42:58,454 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi000_power.opt_pso.opt_rmo.opt.i [2024-06-28 01:42:58,467 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:42:58,467 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 01:42:58,467 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:42:58,497 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 01:42:58,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:42:58,539 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-28 01:42:58,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:42:58,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-28 01:42:58,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-28 01:42:58,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-28 01:42:58,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:42:58,556 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;@5e227605, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:42:58,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-28 01:42:58,559 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:42:58,559 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 01:42:58,560 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:42:58,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:58,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:42:58,561 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 01:42:58,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:58,565 INFO L85 PathProgramCache]: Analyzing trace with hash 311271475, now seen corresponding path program 1 times [2024-06-28 01:42:58,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412520973] [2024-06-28 01:42:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:58,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:59,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:42:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:59,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412520973] [2024-06-28 01:42:59,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412520973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:42:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069130359] [2024-06-28 01:42:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:59,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:42:59,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:59,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:42:59,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:42:59,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-28 01:42:59,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:59,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-28 01:42:59,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:42:59,429 INFO L124 PetriNetUnfolderBase]: 543/1063 cut-off events. [2024-06-28 01:42:59,429 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 01:42:59,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 1063 events. 543/1063 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5878 event pairs, 424 based on Foata normal form. 43/993 useless extension candidates. Maximal degree in co-relation 1972. Up to 892 conditions per place. [2024-06-28 01:42:59,436 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-28 01:42:59,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-28 01:42:59,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:42:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:42:59,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-28 01:42:59,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-28 01:42:59,446 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-28 01:42:59,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-28 01:42:59,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:42:59,449 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-28 01:42:59,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-28 01:42:59,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-28 01:42:59,453 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-28 01:42:59,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:42:59,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:42:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:42:59,454 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 01:42:59,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:42:59,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1515803054, now seen corresponding path program 1 times [2024-06-28 01:42:59,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:42:59,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463012121] [2024-06-28 01:42:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:42:59,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:42:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:42:59,832 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 01:42:59,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:42:59,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463012121] [2024-06-28 01:42:59,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463012121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:42:59,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:42:59,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 01:42:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869993551] [2024-06-28 01:42:59,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:42:59,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:42:59,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:42:59,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:42:59,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:42:59,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:42:59,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:42:59,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:42:59,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:42:59,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:00,049 INFO L124 PetriNetUnfolderBase]: 703/1191 cut-off events. [2024-06-28 01:43:00,050 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-06-28 01:43:00,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1191 events. 703/1191 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5929 event pairs, 313 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 2600. Up to 1127 conditions per place. [2024-06-28 01:43:00,059 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 43 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-28 01:43:00,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 250 flow [2024-06-28 01:43:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:43:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:43:00,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 92 transitions. [2024-06-28 01:43:00,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6216216216216216 [2024-06-28 01:43:00,063 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 92 transitions. [2024-06-28 01:43:00,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 250 flow [2024-06-28 01:43:00,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:00,067 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-28 01:43:00,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-28 01:43:00,068 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-28 01:43:00,068 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-28 01:43:00,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:00,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:43:00,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:00,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:00,075 INFO L85 PathProgramCache]: Analyzing trace with hash 254746274, now seen corresponding path program 1 times [2024-06-28 01:43:00,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:00,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047716602] [2024-06-28 01:43:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:00,513 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 01:43:00,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:00,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047716602] [2024-06-28 01:43:00,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047716602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:00,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:00,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:43:00,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877353319] [2024-06-28 01:43:00,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:00,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:43:00,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:00,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:43:00,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:43:00,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:43:00,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:00,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:43:00,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:00,714 INFO L124 PetriNetUnfolderBase]: 695/1293 cut-off events. [2024-06-28 01:43:00,715 INFO L125 PetriNetUnfolderBase]: For 405/405 co-relation queries the response was YES. [2024-06-28 01:43:00,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2920 conditions, 1293 events. 695/1293 cut-off events. For 405/405 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7084 event pairs, 229 based on Foata normal form. 4/1202 useless extension candidates. Maximal degree in co-relation 2906. Up to 1098 conditions per place. [2024-06-28 01:43:00,720 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 50 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-28 01:43:00,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 362 flow [2024-06-28 01:43:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:43:00,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:43:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2024-06-28 01:43:00,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5891891891891892 [2024-06-28 01:43:00,721 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 109 transitions. [2024-06-28 01:43:00,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 362 flow [2024-06-28 01:43:00,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 336 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:00,724 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 231 flow [2024-06-28 01:43:00,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-06-28 01:43:00,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-28 01:43:00,725 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 231 flow [2024-06-28 01:43:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:00,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:00,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:43:00,725 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:00,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash 254464843, now seen corresponding path program 1 times [2024-06-28 01:43:00,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:00,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487119147] [2024-06-28 01:43:00,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:00,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487119147] [2024-06-28 01:43:00,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487119147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:00,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:00,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:43:00,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072164128] [2024-06-28 01:43:00,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:00,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:43:00,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:00,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:43:00,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:43:00,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-28 01:43:00,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:00,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-28 01:43:00,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:00,844 INFO L124 PetriNetUnfolderBase]: 187/510 cut-off events. [2024-06-28 01:43:00,844 INFO L125 PetriNetUnfolderBase]: For 292/318 co-relation queries the response was YES. [2024-06-28 01:43:00,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 510 events. 187/510 cut-off events. For 292/318 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3074 event pairs, 68 based on Foata normal form. 10/475 useless extension candidates. Maximal degree in co-relation 1057. Up to 273 conditions per place. [2024-06-28 01:43:00,847 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-28 01:43:00,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 270 flow [2024-06-28 01:43:00,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:43:00,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:43:00,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-28 01:43:00,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-06-28 01:43:00,848 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 231 flow. Second operand 3 states and 82 transitions. [2024-06-28 01:43:00,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 270 flow [2024-06-28 01:43:00,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:43:00,850 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 198 flow [2024-06-28 01:43:00,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-28 01:43:00,851 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-28 01:43:00,851 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 198 flow [2024-06-28 01:43:00,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:00,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:00,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:00,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:43:00,852 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 01:43:00,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:00,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1462276643, now seen corresponding path program 1 times [2024-06-28 01:43:00,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:00,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682642638] [2024-06-28 01:43:00,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:00,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:01,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:01,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:01,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682642638] [2024-06-28 01:43:01,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682642638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:01,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:01,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:01,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075784219] [2024-06-28 01:43:01,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:01,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:01,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:01,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:01,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:43:01,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:01,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:01,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:43:01,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:02,003 INFO L124 PetriNetUnfolderBase]: 613/1141 cut-off events. [2024-06-28 01:43:02,003 INFO L125 PetriNetUnfolderBase]: For 800/800 co-relation queries the response was YES. [2024-06-28 01:43:02,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 1141 events. 613/1141 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5979 event pairs, 156 based on Foata normal form. 4/1101 useless extension candidates. Maximal degree in co-relation 2739. Up to 938 conditions per place. [2024-06-28 01:43:02,009 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 49 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-06-28 01:43:02,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 380 flow [2024-06-28 01:43:02,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 120 transitions. [2024-06-28 01:43:02,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-06-28 01:43:02,013 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 198 flow. Second operand 6 states and 120 transitions. [2024-06-28 01:43:02,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 380 flow [2024-06-28 01:43:02,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:02,016 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 219 flow [2024-06-28 01:43:02,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-28 01:43:02,017 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-28 01:43:02,017 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 219 flow [2024-06-28 01:43:02,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:02,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:02,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:02,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:43:02,018 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 01:43:02,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:02,018 INFO L85 PathProgramCache]: Analyzing trace with hash -273098082, now seen corresponding path program 1 times [2024-06-28 01:43:02,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:02,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126894567] [2024-06-28 01:43:02,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:02,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:02,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:02,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:02,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126894567] [2024-06-28 01:43:02,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126894567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:02,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:02,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:43:02,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85435655] [2024-06-28 01:43:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:02,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:43:02,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:02,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:43:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:43:02,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-28 01:43:02,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:02,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:02,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-28 01:43:02,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:02,729 INFO L124 PetriNetUnfolderBase]: 452/897 cut-off events. [2024-06-28 01:43:02,729 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-28 01:43:02,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 897 events. 452/897 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4715 event pairs, 186 based on Foata normal form. 1/854 useless extension candidates. Maximal degree in co-relation 2245. Up to 738 conditions per place. [2024-06-28 01:43:02,733 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-28 01:43:02,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 388 flow [2024-06-28 01:43:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:43:02,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:43:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-28 01:43:02,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-28 01:43:02,735 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 219 flow. Second operand 5 states and 91 transitions. [2024-06-28 01:43:02,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 388 flow [2024-06-28 01:43:02,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:02,738 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 248 flow [2024-06-28 01:43:02,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-28 01:43:02,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-28 01:43:02,738 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 248 flow [2024-06-28 01:43:02,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:02,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:02,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:02,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:43:02,739 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 01:43:02,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 123895439, now seen corresponding path program 1 times [2024-06-28 01:43:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115136520] [2024-06-28 01:43:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:02,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:03,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:03,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:03,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115136520] [2024-06-28 01:43:03,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115136520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:03,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:03,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:03,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141793626] [2024-06-28 01:43:03,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:03,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:03,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:03,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:03,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:03,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:03,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:03,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:03,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:03,488 INFO L124 PetriNetUnfolderBase]: 643/1187 cut-off events. [2024-06-28 01:43:03,488 INFO L125 PetriNetUnfolderBase]: For 1289/1289 co-relation queries the response was YES. [2024-06-28 01:43:03,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 1187 events. 643/1187 cut-off events. For 1289/1289 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 6107 event pairs, 239 based on Foata normal form. 2/1145 useless extension candidates. Maximal degree in co-relation 3135. Up to 969 conditions per place. [2024-06-28 01:43:03,494 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 59 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-06-28 01:43:03,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 522 flow [2024-06-28 01:43:03,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:03,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:03,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-28 01:43:03,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2024-06-28 01:43:03,496 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 248 flow. Second operand 7 states and 114 transitions. [2024-06-28 01:43:03,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 522 flow [2024-06-28 01:43:03,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 81 transitions, 512 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:03,499 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 361 flow [2024-06-28 01:43:03,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=361, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-06-28 01:43:03,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 22 predicate places. [2024-06-28 01:43:03,499 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 361 flow [2024-06-28 01:43:03,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:03,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:03,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:43:03,500 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 01:43:03,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1427417219, now seen corresponding path program 1 times [2024-06-28 01:43:03,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:03,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502694726] [2024-06-28 01:43:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:03,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:03,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502694726] [2024-06-28 01:43:03,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502694726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:03,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:03,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:03,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883726377] [2024-06-28 01:43:03,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:03,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:03,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:03,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:03,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 361 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:03,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:03,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:03,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:04,243 INFO L124 PetriNetUnfolderBase]: 665/1242 cut-off events. [2024-06-28 01:43:04,243 INFO L125 PetriNetUnfolderBase]: For 2080/2080 co-relation queries the response was YES. [2024-06-28 01:43:04,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1242 events. 665/1242 cut-off events. For 2080/2080 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6472 event pairs, 271 based on Foata normal form. 1/1193 useless extension candidates. Maximal degree in co-relation 3728. Up to 1058 conditions per place. [2024-06-28 01:43:04,250 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 66 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-28 01:43:04,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 629 flow [2024-06-28 01:43:04,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:04,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:04,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-28 01:43:04,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.444015444015444 [2024-06-28 01:43:04,254 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 361 flow. Second operand 7 states and 115 transitions. [2024-06-28 01:43:04,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 629 flow [2024-06-28 01:43:04,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 621 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 01:43:04,258 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 457 flow [2024-06-28 01:43:04,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=457, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2024-06-28 01:43:04,260 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-28 01:43:04,260 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 457 flow [2024-06-28 01:43:04,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:04,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:04,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:04,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:43:04,261 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 01:43:04,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash -459959875, now seen corresponding path program 2 times [2024-06-28 01:43:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439590710] [2024-06-28 01:43:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:04,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:04,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:04,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:04,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439590710] [2024-06-28 01:43:04,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439590710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:04,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:04,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:04,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114221231] [2024-06-28 01:43:04,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:04,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:04,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:04,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:04,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:04,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:04,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:04,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:04,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:04,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:04,950 INFO L124 PetriNetUnfolderBase]: 678/1265 cut-off events. [2024-06-28 01:43:04,950 INFO L125 PetriNetUnfolderBase]: For 2696/2696 co-relation queries the response was YES. [2024-06-28 01:43:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4036 conditions, 1265 events. 678/1265 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6599 event pairs, 270 based on Foata normal form. 1/1215 useless extension candidates. Maximal degree in co-relation 4003. Up to 1068 conditions per place. [2024-06-28 01:43:04,958 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 65 selfloop transitions, 16 changer transitions 0/87 dead transitions. [2024-06-28 01:43:04,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 87 transitions, 688 flow [2024-06-28 01:43:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:04,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:04,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-28 01:43:04,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:43:04,972 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 457 flow. Second operand 6 states and 100 transitions. [2024-06-28 01:43:04,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 87 transitions, 688 flow [2024-06-28 01:43:04,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 663 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:04,977 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 495 flow [2024-06-28 01:43:04,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=495, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2024-06-28 01:43:04,978 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 32 predicate places. [2024-06-28 01:43:04,979 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 495 flow [2024-06-28 01:43:04,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:04,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:04,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:04,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:43:04,979 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 01:43:04,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -454216195, now seen corresponding path program 3 times [2024-06-28 01:43:04,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:04,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223200803] [2024-06-28 01:43:04,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:04,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:05,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:05,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:05,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223200803] [2024-06-28 01:43:05,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223200803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:05,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:05,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:43:05,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714896482] [2024-06-28 01:43:05,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:43:05,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:43:05,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:43:05,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:05,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:05,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:05,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:05,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:05,700 INFO L124 PetriNetUnfolderBase]: 673/1246 cut-off events. [2024-06-28 01:43:05,700 INFO L125 PetriNetUnfolderBase]: For 3225/3225 co-relation queries the response was YES. [2024-06-28 01:43:05,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4074 conditions, 1246 events. 673/1246 cut-off events. For 3225/3225 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6443 event pairs, 249 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 4040. Up to 984 conditions per place. [2024-06-28 01:43:05,708 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 62 selfloop transitions, 20 changer transitions 0/88 dead transitions. [2024-06-28 01:43:05,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 88 transitions, 717 flow [2024-06-28 01:43:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:43:05,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:43:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-28 01:43:05,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46396396396396394 [2024-06-28 01:43:05,709 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 495 flow. Second operand 6 states and 103 transitions. [2024-06-28 01:43:05,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 88 transitions, 717 flow [2024-06-28 01:43:05,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 679 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:05,714 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 504 flow [2024-06-28 01:43:05,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=504, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-28 01:43:05,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-28 01:43:05,715 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 504 flow [2024-06-28 01:43:05,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:05,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:05,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:05,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:43:05,715 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 01:43:05,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash -454207267, now seen corresponding path program 1 times [2024-06-28 01:43:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:05,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666228310] [2024-06-28 01:43:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:06,187 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 01:43:06,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666228310] [2024-06-28 01:43:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666228310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:06,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:06,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:06,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447965253] [2024-06-28 01:43:06,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:06,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:06,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:06,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:06,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:06,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:06,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 504 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:06,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:06,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:06,472 INFO L124 PetriNetUnfolderBase]: 694/1282 cut-off events. [2024-06-28 01:43:06,473 INFO L125 PetriNetUnfolderBase]: For 3218/3218 co-relation queries the response was YES. [2024-06-28 01:43:06,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 1282 events. 694/1282 cut-off events. For 3218/3218 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6725 event pairs, 252 based on Foata normal form. 2/1234 useless extension candidates. Maximal degree in co-relation 4165. Up to 970 conditions per place. [2024-06-28 01:43:06,480 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 68 selfloop transitions, 26 changer transitions 0/100 dead transitions. [2024-06-28 01:43:06,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 100 transitions, 814 flow [2024-06-28 01:43:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 01:43:06,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-28 01:43:06,482 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 504 flow. Second operand 7 states and 122 transitions. [2024-06-28 01:43:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 100 transitions, 814 flow [2024-06-28 01:43:06,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 100 transitions, 761 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:06,486 INFO L231 Difference]: Finished difference. Result has 77 places, 76 transitions, 539 flow [2024-06-28 01:43:06,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=539, PETRI_PLACES=77, PETRI_TRANSITIONS=76} [2024-06-28 01:43:06,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 36 predicate places. [2024-06-28 01:43:06,487 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 76 transitions, 539 flow [2024-06-28 01:43:06,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:06,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:06,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:43:06,488 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 01:43:06,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:06,488 INFO L85 PathProgramCache]: Analyzing trace with hash -231207049, now seen corresponding path program 1 times [2024-06-28 01:43:06,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:06,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072757283] [2024-06-28 01:43:06,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:06,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:06,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:06,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072757283] [2024-06-28 01:43:06,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072757283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:06,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:06,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:06,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075016657] [2024-06-28 01:43:06,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:06,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:06,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:06,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:06,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:06,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 76 transitions, 539 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:06,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:06,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:06,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:07,389 INFO L124 PetriNetUnfolderBase]: 716/1332 cut-off events. [2024-06-28 01:43:07,389 INFO L125 PetriNetUnfolderBase]: For 3735/3735 co-relation queries the response was YES. [2024-06-28 01:43:07,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 1332 events. 716/1332 cut-off events. For 3735/3735 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7047 event pairs, 213 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 4490. Up to 1088 conditions per place. [2024-06-28 01:43:07,397 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 76 selfloop transitions, 25 changer transitions 0/107 dead transitions. [2024-06-28 01:43:07,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 107 transitions, 849 flow [2024-06-28 01:43:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:07,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 01:43:07,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-28 01:43:07,399 INFO L175 Difference]: Start difference. First operand has 77 places, 76 transitions, 539 flow. Second operand 7 states and 122 transitions. [2024-06-28 01:43:07,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 107 transitions, 849 flow [2024-06-28 01:43:07,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 107 transitions, 820 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:07,405 INFO L231 Difference]: Finished difference. Result has 82 places, 83 transitions, 618 flow [2024-06-28 01:43:07,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=618, PETRI_PLACES=82, PETRI_TRANSITIONS=83} [2024-06-28 01:43:07,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 41 predicate places. [2024-06-28 01:43:07,407 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 83 transitions, 618 flow [2024-06-28 01:43:07,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:07,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:07,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:07,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:43:07,408 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 01:43:07,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:07,408 INFO L85 PathProgramCache]: Analyzing trace with hash 986177633, now seen corresponding path program 2 times [2024-06-28 01:43:07,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:07,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782168076] [2024-06-28 01:43:07,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:07,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:07,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:07,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:07,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782168076] [2024-06-28 01:43:07,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782168076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:07,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:07,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:07,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361963778] [2024-06-28 01:43:07,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:07,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:07,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:07,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:07,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:07,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 83 transitions, 618 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:07,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:07,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:07,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:08,187 INFO L124 PetriNetUnfolderBase]: 752/1377 cut-off events. [2024-06-28 01:43:08,187 INFO L125 PetriNetUnfolderBase]: For 4784/4784 co-relation queries the response was YES. [2024-06-28 01:43:08,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5104 conditions, 1377 events. 752/1377 cut-off events. For 4784/4784 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7259 event pairs, 203 based on Foata normal form. 2/1328 useless extension candidates. Maximal degree in co-relation 5065. Up to 1089 conditions per place. [2024-06-28 01:43:08,201 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 82 selfloop transitions, 30 changer transitions 0/118 dead transitions. [2024-06-28 01:43:08,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 118 transitions, 1040 flow [2024-06-28 01:43:08,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:08,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-28 01:43:08,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47104247104247104 [2024-06-28 01:43:08,203 INFO L175 Difference]: Start difference. First operand has 82 places, 83 transitions, 618 flow. Second operand 7 states and 122 transitions. [2024-06-28 01:43:08,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 118 transitions, 1040 flow [2024-06-28 01:43:08,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 118 transitions, 1003 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:08,209 INFO L231 Difference]: Finished difference. Result has 87 places, 94 transitions, 773 flow [2024-06-28 01:43:08,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=773, PETRI_PLACES=87, PETRI_TRANSITIONS=94} [2024-06-28 01:43:08,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 46 predicate places. [2024-06-28 01:43:08,210 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 94 transitions, 773 flow [2024-06-28 01:43:08,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:08,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:08,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:43:08,211 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 01:43:08,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:08,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1195798985, now seen corresponding path program 3 times [2024-06-28 01:43:08,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:08,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800436659] [2024-06-28 01:43:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:08,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:08,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:08,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:08,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:08,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800436659] [2024-06-28 01:43:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800436659] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:08,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:08,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:08,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716653964] [2024-06-28 01:43:08,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:08,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:08,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:08,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:08,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:08,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:08,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 94 transitions, 773 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:08,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:08,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:08,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:09,092 INFO L124 PetriNetUnfolderBase]: 770/1431 cut-off events. [2024-06-28 01:43:09,092 INFO L125 PetriNetUnfolderBase]: For 6270/6270 co-relation queries the response was YES. [2024-06-28 01:43:09,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5554 conditions, 1431 events. 770/1431 cut-off events. For 6270/6270 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7650 event pairs, 165 based on Foata normal form. 4/1374 useless extension candidates. Maximal degree in co-relation 5513. Up to 959 conditions per place. [2024-06-28 01:43:09,104 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 95 selfloop transitions, 38 changer transitions 0/139 dead transitions. [2024-06-28 01:43:09,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 139 transitions, 1324 flow [2024-06-28 01:43:09,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 01:43:09,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47876447876447875 [2024-06-28 01:43:09,106 INFO L175 Difference]: Start difference. First operand has 87 places, 94 transitions, 773 flow. Second operand 7 states and 124 transitions. [2024-06-28 01:43:09,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 139 transitions, 1324 flow [2024-06-28 01:43:09,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1266 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:09,117 INFO L231 Difference]: Finished difference. Result has 92 places, 112 transitions, 999 flow [2024-06-28 01:43:09,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=999, PETRI_PLACES=92, PETRI_TRANSITIONS=112} [2024-06-28 01:43:09,117 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-28 01:43:09,118 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 112 transitions, 999 flow [2024-06-28 01:43:09,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:09,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:09,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:09,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 01:43:09,118 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 01:43:09,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:09,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1195521938, now seen corresponding path program 1 times [2024-06-28 01:43:09,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:09,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240726111] [2024-06-28 01:43:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:09,625 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 01:43:09,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:09,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240726111] [2024-06-28 01:43:09,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240726111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:09,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:09,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:09,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709477123] [2024-06-28 01:43:09,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:09,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:09,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:09,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:09,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:09,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:09,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 112 transitions, 999 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:09,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:09,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:09,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:09,927 INFO L124 PetriNetUnfolderBase]: 791/1453 cut-off events. [2024-06-28 01:43:09,927 INFO L125 PetriNetUnfolderBase]: For 7635/7635 co-relation queries the response was YES. [2024-06-28 01:43:09,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6126 conditions, 1453 events. 791/1453 cut-off events. For 7635/7635 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7795 event pairs, 176 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 6082. Up to 1069 conditions per place. [2024-06-28 01:43:09,935 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 106 selfloop transitions, 38 changer transitions 0/150 dead transitions. [2024-06-28 01:43:09,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 150 transitions, 1514 flow [2024-06-28 01:43:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:09,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:43:09,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:43:09,937 INFO L175 Difference]: Start difference. First operand has 92 places, 112 transitions, 999 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:43:09,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 150 transitions, 1514 flow [2024-06-28 01:43:09,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 150 transitions, 1455 flow, removed 22 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:09,947 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1074 flow [2024-06-28 01:43:09,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1074, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2024-06-28 01:43:09,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 01:43:09,948 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1074 flow [2024-06-28 01:43:09,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:09,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:09,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:09,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 01:43:09,949 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 01:43:09,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:09,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1883480612, now seen corresponding path program 1 times [2024-06-28 01:43:09,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:09,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385070275] [2024-06-28 01:43:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:09,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:10,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385070275] [2024-06-28 01:43:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385070275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091655148] [2024-06-28 01:43:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:10,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:10,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:10,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1074 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:10,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:10,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:10,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:10,983 INFO L124 PetriNetUnfolderBase]: 793/1461 cut-off events. [2024-06-28 01:43:10,984 INFO L125 PetriNetUnfolderBase]: For 8110/8110 co-relation queries the response was YES. [2024-06-28 01:43:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6392 conditions, 1461 events. 793/1461 cut-off events. For 8110/8110 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7773 event pairs, 201 based on Foata normal form. 1/1404 useless extension candidates. Maximal degree in co-relation 6346. Up to 1196 conditions per place. [2024-06-28 01:43:10,993 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 109 selfloop transitions, 31 changer transitions 0/146 dead transitions. [2024-06-28 01:43:10,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1492 flow [2024-06-28 01:43:10,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:10,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:10,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-28 01:43:10,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749034749034749 [2024-06-28 01:43:10,995 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1074 flow. Second operand 7 states and 123 transitions. [2024-06-28 01:43:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1492 flow [2024-06-28 01:43:11,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 146 transitions, 1429 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:11,009 INFO L231 Difference]: Finished difference. Result has 102 places, 124 transitions, 1170 flow [2024-06-28 01:43:11,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1170, PETRI_PLACES=102, PETRI_TRANSITIONS=124} [2024-06-28 01:43:11,010 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-28 01:43:11,010 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 124 transitions, 1170 flow [2024-06-28 01:43:11,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:11,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 01:43:11,011 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 01:43:11,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,011 INFO L85 PathProgramCache]: Analyzing trace with hash 502989040, now seen corresponding path program 1 times [2024-06-28 01:43:11,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582289391] [2024-06-28 01:43:11,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:11,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:11,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:11,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582289391] [2024-06-28 01:43:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582289391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:11,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:11,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307158415] [2024-06-28 01:43:11,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:11,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:11,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:11,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 124 transitions, 1170 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:11,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:11,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:11,868 INFO L124 PetriNetUnfolderBase]: 813/1493 cut-off events. [2024-06-28 01:43:11,868 INFO L125 PetriNetUnfolderBase]: For 9163/9163 co-relation queries the response was YES. [2024-06-28 01:43:11,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6645 conditions, 1493 events. 813/1493 cut-off events. For 9163/9163 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7954 event pairs, 208 based on Foata normal form. 2/1435 useless extension candidates. Maximal degree in co-relation 6596. Up to 1212 conditions per place. [2024-06-28 01:43:11,877 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 115 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-28 01:43:11,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 150 transitions, 1571 flow [2024-06-28 01:43:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:11,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:11,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:43:11,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-28 01:43:11,878 INFO L175 Difference]: Start difference. First operand has 102 places, 124 transitions, 1170 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:43:11,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 150 transitions, 1571 flow [2024-06-28 01:43:11,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 150 transitions, 1537 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:11,890 INFO L231 Difference]: Finished difference. Result has 106 places, 127 transitions, 1235 flow [2024-06-28 01:43:11,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1235, PETRI_PLACES=106, PETRI_TRANSITIONS=127} [2024-06-28 01:43:11,891 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 65 predicate places. [2024-06-28 01:43:11,891 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 127 transitions, 1235 flow [2024-06-28 01:43:11,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:11,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:11,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 01:43:11,892 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 01:43:11,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:11,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1879641386, now seen corresponding path program 2 times [2024-06-28 01:43:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260014773] [2024-06-28 01:43:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:11,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:12,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:12,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:12,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260014773] [2024-06-28 01:43:12,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260014773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:12,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:12,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:12,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681805448] [2024-06-28 01:43:12,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:12,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:12,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:12,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:12,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:12,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:12,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 127 transitions, 1235 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:12,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:12,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:12,787 INFO L124 PetriNetUnfolderBase]: 847/1542 cut-off events. [2024-06-28 01:43:12,787 INFO L125 PetriNetUnfolderBase]: For 10442/10442 co-relation queries the response was YES. [2024-06-28 01:43:12,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7050 conditions, 1542 events. 847/1542 cut-off events. For 10442/10442 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8231 event pairs, 190 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 7000. Up to 1044 conditions per place. [2024-06-28 01:43:12,798 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 102 selfloop transitions, 53 changer transitions 0/161 dead transitions. [2024-06-28 01:43:12,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 161 transitions, 1811 flow [2024-06-28 01:43:12,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:12,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 01:43:12,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-28 01:43:12,801 INFO L175 Difference]: Start difference. First operand has 106 places, 127 transitions, 1235 flow. Second operand 7 states and 125 transitions. [2024-06-28 01:43:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 161 transitions, 1811 flow [2024-06-28 01:43:12,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 161 transitions, 1743 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:12,816 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1406 flow [2024-06-28 01:43:12,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1406, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-28 01:43:12,818 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-28 01:43:12,818 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1406 flow [2024-06-28 01:43:12,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:12,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:12,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:12,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 01:43:12,818 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 01:43:12,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:12,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1879634876, now seen corresponding path program 3 times [2024-06-28 01:43:12,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:12,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433975645] [2024-06-28 01:43:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:12,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:13,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:13,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:13,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433975645] [2024-06-28 01:43:13,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433975645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:13,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:13,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:13,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461350301] [2024-06-28 01:43:13,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:13,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:13,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:13,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:13,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:13,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:13,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1406 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:13,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:13,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:13,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:13,659 INFO L124 PetriNetUnfolderBase]: 843/1533 cut-off events. [2024-06-28 01:43:13,660 INFO L125 PetriNetUnfolderBase]: For 11322/11322 co-relation queries the response was YES. [2024-06-28 01:43:13,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7302 conditions, 1533 events. 843/1533 cut-off events. For 11322/11322 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8173 event pairs, 187 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 7250. Up to 1041 conditions per place. [2024-06-28 01:43:13,671 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 96 selfloop transitions, 60 changer transitions 0/162 dead transitions. [2024-06-28 01:43:13,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 162 transitions, 1893 flow [2024-06-28 01:43:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:13,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-28 01:43:13,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826254826254826 [2024-06-28 01:43:13,674 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1406 flow. Second operand 7 states and 125 transitions. [2024-06-28 01:43:13,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 162 transitions, 1893 flow [2024-06-28 01:43:13,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 162 transitions, 1803 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:13,696 INFO L231 Difference]: Finished difference. Result has 115 places, 139 transitions, 1563 flow [2024-06-28 01:43:13,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1563, PETRI_PLACES=115, PETRI_TRANSITIONS=139} [2024-06-28 01:43:13,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-06-28 01:43:13,697 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 139 transitions, 1563 flow [2024-06-28 01:43:13,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:13,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:13,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:13,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 01:43:13,698 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 01:43:13,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:13,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1593516156, now seen corresponding path program 1 times [2024-06-28 01:43:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:13,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695014576] [2024-06-28 01:43:13,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:13,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:14,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:14,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695014576] [2024-06-28 01:43:14,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695014576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:14,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:14,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:14,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738919764] [2024-06-28 01:43:14,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:14,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:14,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 139 transitions, 1563 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:14,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:14,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:14,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:14,770 INFO L124 PetriNetUnfolderBase]: 856/1542 cut-off events. [2024-06-28 01:43:14,770 INFO L125 PetriNetUnfolderBase]: For 12424/12424 co-relation queries the response was YES. [2024-06-28 01:43:14,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7663 conditions, 1542 events. 856/1542 cut-off events. For 12424/12424 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8167 event pairs, 182 based on Foata normal form. 1/1488 useless extension candidates. Maximal degree in co-relation 7608. Up to 1209 conditions per place. [2024-06-28 01:43:14,782 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 130 selfloop transitions, 38 changer transitions 0/174 dead transitions. [2024-06-28 01:43:14,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 174 transitions, 2136 flow [2024-06-28 01:43:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:14,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:14,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:43:14,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:43:14,784 INFO L175 Difference]: Start difference. First operand has 115 places, 139 transitions, 1563 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:43:14,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 174 transitions, 2136 flow [2024-06-28 01:43:14,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 174 transitions, 2039 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:14,813 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 1571 flow [2024-06-28 01:43:14,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1571, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-06-28 01:43:14,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-28 01:43:14,813 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 1571 flow [2024-06-28 01:43:14,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:14,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:14,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 01:43:14,814 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 01:43:14,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1593219486, now seen corresponding path program 2 times [2024-06-28 01:43:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:14,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550376742] [2024-06-28 01:43:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:14,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:15,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:15,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550376742] [2024-06-28 01:43:15,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550376742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:15,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:15,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:43:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964719097] [2024-06-28 01:43:15,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:15,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 01:43:15,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:15,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 01:43:15,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 01:43:15,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:15,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 1571 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:15,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:15,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:15,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:15,700 INFO L124 PetriNetUnfolderBase]: 854/1536 cut-off events. [2024-06-28 01:43:15,700 INFO L125 PetriNetUnfolderBase]: For 12939/12939 co-relation queries the response was YES. [2024-06-28 01:43:15,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7633 conditions, 1536 events. 854/1536 cut-off events. For 12939/12939 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8114 event pairs, 183 based on Foata normal form. 1/1483 useless extension candidates. Maximal degree in co-relation 7577. Up to 1207 conditions per place. [2024-06-28 01:43:15,712 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 128 selfloop transitions, 34 changer transitions 0/168 dead transitions. [2024-06-28 01:43:15,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 168 transitions, 2052 flow [2024-06-28 01:43:15,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:43:15,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:43:15,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 01:43:15,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-28 01:43:15,733 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 1571 flow. Second operand 7 states and 121 transitions. [2024-06-28 01:43:15,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 168 transitions, 2052 flow [2024-06-28 01:43:15,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 168 transitions, 1970 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:15,775 INFO L231 Difference]: Finished difference. Result has 120 places, 141 transitions, 1563 flow [2024-06-28 01:43:15,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1489, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1563, PETRI_PLACES=120, PETRI_TRANSITIONS=141} [2024-06-28 01:43:15,776 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 79 predicate places. [2024-06-28 01:43:15,776 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 141 transitions, 1563 flow [2024-06-28 01:43:15,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:15,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:15,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:15,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 01:43:15,777 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 01:43:15,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1593527068, now seen corresponding path program 1 times [2024-06-28 01:43:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258113150] [2024-06-28 01:43:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:15,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:16,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:16,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258113150] [2024-06-28 01:43:16,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258113150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:16,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:16,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:16,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928052639] [2024-06-28 01:43:16,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:16,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:16,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:16,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:16,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:16,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:16,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 141 transitions, 1563 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:16,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:16,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:16,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:16,922 INFO L124 PetriNetUnfolderBase]: 936/1677 cut-off events. [2024-06-28 01:43:16,922 INFO L125 PetriNetUnfolderBase]: For 15133/15133 co-relation queries the response was YES. [2024-06-28 01:43:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8190 conditions, 1677 events. 936/1677 cut-off events. For 15133/15133 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9012 event pairs, 173 based on Foata normal form. 4/1622 useless extension candidates. Maximal degree in co-relation 8133. Up to 889 conditions per place. [2024-06-28 01:43:16,934 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 127 selfloop transitions, 76 changer transitions 0/209 dead transitions. [2024-06-28 01:43:16,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 209 transitions, 2558 flow [2024-06-28 01:43:16,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:16,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:16,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 168 transitions. [2024-06-28 01:43:16,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-06-28 01:43:16,936 INFO L175 Difference]: Start difference. First operand has 120 places, 141 transitions, 1563 flow. Second operand 9 states and 168 transitions. [2024-06-28 01:43:16,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 209 transitions, 2558 flow [2024-06-28 01:43:16,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 209 transitions, 2455 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:16,962 INFO L231 Difference]: Finished difference. Result has 126 places, 162 transitions, 1901 flow [2024-06-28 01:43:16,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1476, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1901, PETRI_PLACES=126, PETRI_TRANSITIONS=162} [2024-06-28 01:43:16,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 85 predicate places. [2024-06-28 01:43:16,963 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 162 transitions, 1901 flow [2024-06-28 01:43:16,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:16,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:16,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:16,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 01:43:16,964 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 01:43:16,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:16,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1741583026, now seen corresponding path program 1 times [2024-06-28 01:43:16,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:16,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319403499] [2024-06-28 01:43:16,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:16,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319403499] [2024-06-28 01:43:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319403499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:17,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:17,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093858721] [2024-06-28 01:43:17,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:17,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:17,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:17,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:17,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 162 transitions, 1901 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:17,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:17,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:17,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:18,476 INFO L124 PetriNetUnfolderBase]: 999/1778 cut-off events. [2024-06-28 01:43:18,476 INFO L125 PetriNetUnfolderBase]: For 18035/18035 co-relation queries the response was YES. [2024-06-28 01:43:18,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9544 conditions, 1778 events. 999/1778 cut-off events. For 18035/18035 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9533 event pairs, 180 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 9483. Up to 1475 conditions per place. [2024-06-28 01:43:18,492 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 164 selfloop transitions, 42 changer transitions 0/212 dead transitions. [2024-06-28 01:43:18,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 212 transitions, 2714 flow [2024-06-28 01:43:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:18,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:43:18,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:43:18,494 INFO L175 Difference]: Start difference. First operand has 126 places, 162 transitions, 1901 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:43:18,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 212 transitions, 2714 flow [2024-06-28 01:43:18,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 212 transitions, 2596 flow, removed 31 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:18,530 INFO L231 Difference]: Finished difference. Result has 136 places, 183 transitions, 2220 flow [2024-06-28 01:43:18,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1795, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2220, PETRI_PLACES=136, PETRI_TRANSITIONS=183} [2024-06-28 01:43:18,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 95 predicate places. [2024-06-28 01:43:18,531 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 183 transitions, 2220 flow [2024-06-28 01:43:18,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:18,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:18,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:18,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 01:43:18,532 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 01:43:18,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:18,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1836807151, now seen corresponding path program 1 times [2024-06-28 01:43:18,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:18,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273991301] [2024-06-28 01:43:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:18,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:19,262 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 01:43:19,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273991301] [2024-06-28 01:43:19,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273991301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:19,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:19,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:19,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877974422] [2024-06-28 01:43:19,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:19,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:19,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:19,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:19,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:19,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 183 transitions, 2220 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:19,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:19,765 INFO L124 PetriNetUnfolderBase]: 1087/1914 cut-off events. [2024-06-28 01:43:19,765 INFO L125 PetriNetUnfolderBase]: For 19960/19960 co-relation queries the response was YES. [2024-06-28 01:43:19,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10708 conditions, 1914 events. 1087/1914 cut-off events. For 19960/19960 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10327 event pairs, 193 based on Foata normal form. 1/1855 useless extension candidates. Maximal degree in co-relation 10641. Up to 1559 conditions per place. [2024-06-28 01:43:19,782 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 165 selfloop transitions, 58 changer transitions 0/229 dead transitions. [2024-06-28 01:43:19,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 229 transitions, 3127 flow [2024-06-28 01:43:19,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:19,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:19,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-28 01:43:19,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:43:19,784 INFO L175 Difference]: Start difference. First operand has 136 places, 183 transitions, 2220 flow. Second operand 8 states and 132 transitions. [2024-06-28 01:43:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 229 transitions, 3127 flow [2024-06-28 01:43:19,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 229 transitions, 3055 flow, removed 17 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:19,827 INFO L231 Difference]: Finished difference. Result has 143 places, 204 transitions, 2674 flow [2024-06-28 01:43:19,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2154, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2674, PETRI_PLACES=143, PETRI_TRANSITIONS=204} [2024-06-28 01:43:19,828 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 102 predicate places. [2024-06-28 01:43:19,828 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 204 transitions, 2674 flow [2024-06-28 01:43:19,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:19,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:19,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:19,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 01:43:19,829 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 01:43:19,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:19,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1003553758, now seen corresponding path program 2 times [2024-06-28 01:43:19,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:19,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730819993] [2024-06-28 01:43:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:19,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:20,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:20,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:20,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730819993] [2024-06-28 01:43:20,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730819993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:20,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:20,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:20,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360547385] [2024-06-28 01:43:20,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:20,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:20,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:20,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:20,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:20,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:20,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 204 transitions, 2674 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:20,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:20,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:20,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:21,136 INFO L124 PetriNetUnfolderBase]: 1102/1947 cut-off events. [2024-06-28 01:43:21,137 INFO L125 PetriNetUnfolderBase]: For 22788/22788 co-relation queries the response was YES. [2024-06-28 01:43:21,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11028 conditions, 1947 events. 1102/1947 cut-off events. For 22788/22788 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10570 event pairs, 188 based on Foata normal form. 2/1891 useless extension candidates. Maximal degree in co-relation 10958. Up to 1556 conditions per place. [2024-06-28 01:43:21,152 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 164 selfloop transitions, 64 changer transitions 0/234 dead transitions. [2024-06-28 01:43:21,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 234 transitions, 3294 flow [2024-06-28 01:43:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:21,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:43:21,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:21,154 INFO L175 Difference]: Start difference. First operand has 143 places, 204 transitions, 2674 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:43:21,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 234 transitions, 3294 flow [2024-06-28 01:43:21,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 234 transitions, 3235 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:21,201 INFO L231 Difference]: Finished difference. Result has 149 places, 208 transitions, 2860 flow [2024-06-28 01:43:21,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2615, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2860, PETRI_PLACES=149, PETRI_TRANSITIONS=208} [2024-06-28 01:43:21,202 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 108 predicate places. [2024-06-28 01:43:21,202 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 208 transitions, 2860 flow [2024-06-28 01:43:21,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:21,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:21,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:21,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 01:43:21,202 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 01:43:21,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:21,203 INFO L85 PathProgramCache]: Analyzing trace with hash -938587242, now seen corresponding path program 1 times [2024-06-28 01:43:21,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:21,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27523470] [2024-06-28 01:43:21,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:21,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:21,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:21,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27523470] [2024-06-28 01:43:21,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27523470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:21,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:21,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:21,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326064936] [2024-06-28 01:43:21,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:21,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:21,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:21,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:21,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:21,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:21,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 208 transitions, 2860 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:21,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:21,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:21,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:22,178 INFO L124 PetriNetUnfolderBase]: 1122/1974 cut-off events. [2024-06-28 01:43:22,179 INFO L125 PetriNetUnfolderBase]: For 25660/25660 co-relation queries the response was YES. [2024-06-28 01:43:22,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11386 conditions, 1974 events. 1122/1974 cut-off events. For 25660/25660 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10752 event pairs, 194 based on Foata normal form. 2/1916 useless extension candidates. Maximal degree in co-relation 11314. Up to 1572 conditions per place. [2024-06-28 01:43:22,193 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 174 selfloop transitions, 58 changer transitions 0/238 dead transitions. [2024-06-28 01:43:22,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 238 transitions, 3463 flow [2024-06-28 01:43:22,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:22,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-28 01:43:22,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-28 01:43:22,195 INFO L175 Difference]: Start difference. First operand has 149 places, 208 transitions, 2860 flow. Second operand 8 states and 137 transitions. [2024-06-28 01:43:22,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 238 transitions, 3463 flow [2024-06-28 01:43:22,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 238 transitions, 3352 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:22,247 INFO L231 Difference]: Finished difference. Result has 153 places, 211 transitions, 2904 flow [2024-06-28 01:43:22,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2904, PETRI_PLACES=153, PETRI_TRANSITIONS=211} [2024-06-28 01:43:22,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-28 01:43:22,248 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 211 transitions, 2904 flow [2024-06-28 01:43:22,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:22,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:22,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 01:43:22,248 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 01:43:22,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:22,249 INFO L85 PathProgramCache]: Analyzing trace with hash -680917780, now seen corresponding path program 2 times [2024-06-28 01:43:22,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:22,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123648724] [2024-06-28 01:43:22,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:22,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:22,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:22,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123648724] [2024-06-28 01:43:22,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123648724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:22,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:22,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:22,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477736895] [2024-06-28 01:43:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:22,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:22,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:22,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:22,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:22,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:22,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 211 transitions, 2904 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:22,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:22,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:22,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:23,295 INFO L124 PetriNetUnfolderBase]: 1142/2006 cut-off events. [2024-06-28 01:43:23,295 INFO L125 PetriNetUnfolderBase]: For 26852/26852 co-relation queries the response was YES. [2024-06-28 01:43:23,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11606 conditions, 2006 events. 1142/2006 cut-off events. For 26852/26852 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10948 event pairs, 166 based on Foata normal form. 2/1947 useless extension candidates. Maximal degree in co-relation 11533. Up to 1208 conditions per place. [2024-06-28 01:43:23,310 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 138 selfloop transitions, 109 changer transitions 0/253 dead transitions. [2024-06-28 01:43:23,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 253 transitions, 3792 flow [2024-06-28 01:43:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:23,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-28 01:43:23,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-28 01:43:23,312 INFO L175 Difference]: Start difference. First operand has 153 places, 211 transitions, 2904 flow. Second operand 8 states and 146 transitions. [2024-06-28 01:43:23,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 253 transitions, 3792 flow [2024-06-28 01:43:23,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 253 transitions, 3671 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:23,371 INFO L231 Difference]: Finished difference. Result has 157 places, 221 transitions, 3197 flow [2024-06-28 01:43:23,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3197, PETRI_PLACES=157, PETRI_TRANSITIONS=221} [2024-06-28 01:43:23,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-28 01:43:23,372 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 221 transitions, 3197 flow [2024-06-28 01:43:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:23,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:23,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:23,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 01:43:23,372 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 01:43:23,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:23,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1635902986, now seen corresponding path program 3 times [2024-06-28 01:43:23,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:23,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600264468] [2024-06-28 01:43:23,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:23,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:23,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:23,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600264468] [2024-06-28 01:43:23,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600264468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:23,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:23,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:23,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251705159] [2024-06-28 01:43:23,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:23,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:23,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:23,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:23,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:23,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:23,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 221 transitions, 3197 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:23,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:23,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:23,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:24,359 INFO L124 PetriNetUnfolderBase]: 1162/2033 cut-off events. [2024-06-28 01:43:24,360 INFO L125 PetriNetUnfolderBase]: For 29853/29853 co-relation queries the response was YES. [2024-06-28 01:43:24,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12403 conditions, 2033 events. 1162/2033 cut-off events. For 29853/29853 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 11087 event pairs, 169 based on Foata normal form. 2/1975 useless extension candidates. Maximal degree in co-relation 12327. Up to 1225 conditions per place. [2024-06-28 01:43:24,374 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 141 selfloop transitions, 108 changer transitions 0/255 dead transitions. [2024-06-28 01:43:24,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 255 transitions, 3988 flow [2024-06-28 01:43:24,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:24,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-28 01:43:24,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-28 01:43:24,377 INFO L175 Difference]: Start difference. First operand has 157 places, 221 transitions, 3197 flow. Second operand 8 states and 145 transitions. [2024-06-28 01:43:24,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 255 transitions, 3988 flow [2024-06-28 01:43:24,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 255 transitions, 3801 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:24,438 INFO L231 Difference]: Finished difference. Result has 160 places, 224 transitions, 3273 flow [2024-06-28 01:43:24,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3273, PETRI_PLACES=160, PETRI_TRANSITIONS=224} [2024-06-28 01:43:24,439 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-28 01:43:24,439 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 224 transitions, 3273 flow [2024-06-28 01:43:24,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:24,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:24,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 01:43:24,439 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 01:43:24,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 567861396, now seen corresponding path program 3 times [2024-06-28 01:43:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:24,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427730256] [2024-06-28 01:43:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427730256] [2024-06-28 01:43:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427730256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135757195] [2024-06-28 01:43:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:24,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:24,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:25,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:25,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 224 transitions, 3273 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:25,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:25,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:25,504 INFO L124 PetriNetUnfolderBase]: 1177/2065 cut-off events. [2024-06-28 01:43:25,504 INFO L125 PetriNetUnfolderBase]: For 32290/32290 co-relation queries the response was YES. [2024-06-28 01:43:25,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12591 conditions, 2065 events. 1177/2065 cut-off events. For 32290/32290 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 11323 event pairs, 202 based on Foata normal form. 2/2007 useless extension candidates. Maximal degree in co-relation 12514. Up to 1644 conditions per place. [2024-06-28 01:43:25,520 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 178 selfloop transitions, 68 changer transitions 0/252 dead transitions. [2024-06-28 01:43:25,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 252 transitions, 3903 flow [2024-06-28 01:43:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-28 01:43:25,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:25,521 INFO L175 Difference]: Start difference. First operand has 160 places, 224 transitions, 3273 flow. Second operand 8 states and 136 transitions. [2024-06-28 01:43:25,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 252 transitions, 3903 flow [2024-06-28 01:43:25,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 252 transitions, 3715 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:25,591 INFO L231 Difference]: Finished difference. Result has 163 places, 226 transitions, 3266 flow [2024-06-28 01:43:25,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3085, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3266, PETRI_PLACES=163, PETRI_TRANSITIONS=226} [2024-06-28 01:43:25,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 122 predicate places. [2024-06-28 01:43:25,592 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 226 transitions, 3266 flow [2024-06-28 01:43:25,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:25,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:25,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:25,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 01:43:25,592 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 01:43:25,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:25,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1717791114, now seen corresponding path program 4 times [2024-06-28 01:43:25,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:25,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699543688] [2024-06-28 01:43:25,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:25,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:26,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:26,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:26,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699543688] [2024-06-28 01:43:26,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699543688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:26,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:26,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:26,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840826398] [2024-06-28 01:43:26,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:26,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:26,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:26,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:26,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:26,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:26,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 226 transitions, 3266 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:26,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:26,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:26,603 INFO L124 PetriNetUnfolderBase]: 1187/2071 cut-off events. [2024-06-28 01:43:26,603 INFO L125 PetriNetUnfolderBase]: For 33408/33408 co-relation queries the response was YES. [2024-06-28 01:43:26,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12588 conditions, 2071 events. 1187/2071 cut-off events. For 33408/33408 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11309 event pairs, 198 based on Foata normal form. 2/2013 useless extension candidates. Maximal degree in co-relation 12510. Up to 1262 conditions per place. [2024-06-28 01:43:26,619 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 152 selfloop transitions, 104 changer transitions 0/262 dead transitions. [2024-06-28 01:43:26,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 262 transitions, 4097 flow [2024-06-28 01:43:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-28 01:43:26,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-28 01:43:26,620 INFO L175 Difference]: Start difference. First operand has 163 places, 226 transitions, 3266 flow. Second operand 8 states and 143 transitions. [2024-06-28 01:43:26,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 262 transitions, 4097 flow [2024-06-28 01:43:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 262 transitions, 3932 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:26,699 INFO L231 Difference]: Finished difference. Result has 166 places, 234 transitions, 3476 flow [2024-06-28 01:43:26,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3101, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3476, PETRI_PLACES=166, PETRI_TRANSITIONS=234} [2024-06-28 01:43:26,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-28 01:43:26,700 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 234 transitions, 3476 flow [2024-06-28 01:43:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:26,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:26,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:26,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 01:43:26,700 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:26,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:26,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1888449270, now seen corresponding path program 4 times [2024-06-28 01:43:26,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:26,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137214553] [2024-06-28 01:43:26,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:26,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137214553] [2024-06-28 01:43:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137214553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544526985] [2024-06-28 01:43:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:27,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:27,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:27,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:27,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:27,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:27,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 234 transitions, 3476 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:27,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:27,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:27,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:27,856 INFO L124 PetriNetUnfolderBase]: 1217/2123 cut-off events. [2024-06-28 01:43:27,856 INFO L125 PetriNetUnfolderBase]: For 36894/36894 co-relation queries the response was YES. [2024-06-28 01:43:27,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13230 conditions, 2123 events. 1217/2123 cut-off events. For 36894/36894 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11659 event pairs, 190 based on Foata normal form. 4/2067 useless extension candidates. Maximal degree in co-relation 13150. Up to 1470 conditions per place. [2024-06-28 01:43:27,873 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 88 changer transitions 0/263 dead transitions. [2024-06-28 01:43:27,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 263 transitions, 4202 flow [2024-06-28 01:43:27,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:27,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 01:43:27,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:43:27,874 INFO L175 Difference]: Start difference. First operand has 166 places, 234 transitions, 3476 flow. Second operand 8 states and 140 transitions. [2024-06-28 01:43:27,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 263 transitions, 4202 flow [2024-06-28 01:43:27,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 263 transitions, 4071 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:27,952 INFO L231 Difference]: Finished difference. Result has 170 places, 237 transitions, 3579 flow [2024-06-28 01:43:27,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3345, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3579, PETRI_PLACES=170, PETRI_TRANSITIONS=237} [2024-06-28 01:43:27,953 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 129 predicate places. [2024-06-28 01:43:27,953 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 237 transitions, 3579 flow [2024-06-28 01:43:27,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:27,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:27,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:27,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 01:43:27,953 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 01:43:27,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:27,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2145157542, now seen corresponding path program 5 times [2024-06-28 01:43:27,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:27,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546918782] [2024-06-28 01:43:27,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:27,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:28,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:28,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546918782] [2024-06-28 01:43:28,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546918782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:28,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:28,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:28,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998140958] [2024-06-28 01:43:28,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:28,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:28,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:28,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:28,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:28,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:28,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 237 transitions, 3579 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:28,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:28,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:28,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:28,877 INFO L124 PetriNetUnfolderBase]: 1237/2153 cut-off events. [2024-06-28 01:43:28,877 INFO L125 PetriNetUnfolderBase]: For 38969/38969 co-relation queries the response was YES. [2024-06-28 01:43:28,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13488 conditions, 2153 events. 1237/2153 cut-off events. For 38969/38969 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11822 event pairs, 214 based on Foata normal form. 2/2095 useless extension candidates. Maximal degree in co-relation 13407. Up to 1329 conditions per place. [2024-06-28 01:43:28,894 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 107 changer transitions 0/267 dead transitions. [2024-06-28 01:43:28,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 267 transitions, 4368 flow [2024-06-28 01:43:28,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:28,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:43:28,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:43:28,896 INFO L175 Difference]: Start difference. First operand has 170 places, 237 transitions, 3579 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:43:28,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 267 transitions, 4368 flow [2024-06-28 01:43:28,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 267 transitions, 4156 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:28,974 INFO L231 Difference]: Finished difference. Result has 172 places, 240 transitions, 3624 flow [2024-06-28 01:43:28,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3367, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3624, PETRI_PLACES=172, PETRI_TRANSITIONS=240} [2024-06-28 01:43:28,975 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-28 01:43:28,975 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 240 transitions, 3624 flow [2024-06-28 01:43:28,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:28,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:28,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:28,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 01:43:28,976 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 01:43:28,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:28,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2140605544, now seen corresponding path program 6 times [2024-06-28 01:43:28,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:28,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896377060] [2024-06-28 01:43:28,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:28,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:29,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:29,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896377060] [2024-06-28 01:43:29,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896377060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:29,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:29,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:29,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301214886] [2024-06-28 01:43:29,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:29,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:29,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:29,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:29,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:29,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:29,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 240 transitions, 3624 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:29,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:29,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:29,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:30,149 INFO L124 PetriNetUnfolderBase]: 1259/2181 cut-off events. [2024-06-28 01:43:30,149 INFO L125 PetriNetUnfolderBase]: For 39049/39049 co-relation queries the response was YES. [2024-06-28 01:43:30,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13649 conditions, 2181 events. 1259/2181 cut-off events. For 39049/39049 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11980 event pairs, 173 based on Foata normal form. 2/2122 useless extension candidates. Maximal degree in co-relation 13567. Up to 1348 conditions per place. [2024-06-28 01:43:30,164 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 146 selfloop transitions, 128 changer transitions 0/280 dead transitions. [2024-06-28 01:43:30,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 280 transitions, 4594 flow [2024-06-28 01:43:30,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:30,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-28 01:43:30,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-28 01:43:30,167 INFO L175 Difference]: Start difference. First operand has 172 places, 240 transitions, 3624 flow. Second operand 10 states and 173 transitions. [2024-06-28 01:43:30,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 280 transitions, 4594 flow [2024-06-28 01:43:30,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 280 transitions, 4252 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:30,254 INFO L231 Difference]: Finished difference. Result has 177 places, 246 transitions, 3651 flow [2024-06-28 01:43:30,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3651, PETRI_PLACES=177, PETRI_TRANSITIONS=246} [2024-06-28 01:43:30,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 136 predicate places. [2024-06-28 01:43:30,255 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 246 transitions, 3651 flow [2024-06-28 01:43:30,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:30,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:30,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:30,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 01:43:30,256 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 01:43:30,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:30,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1895814591, now seen corresponding path program 1 times [2024-06-28 01:43:30,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:30,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011916234] [2024-06-28 01:43:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:30,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:30,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:30,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:30,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011916234] [2024-06-28 01:43:30,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011916234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:30,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:30,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:30,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94436040] [2024-06-28 01:43:30,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:30,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:30,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:30,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:30,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 246 transitions, 3651 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:30,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:30,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:30,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:31,342 INFO L124 PetriNetUnfolderBase]: 1272/2207 cut-off events. [2024-06-28 01:43:31,342 INFO L125 PetriNetUnfolderBase]: For 39362/39362 co-relation queries the response was YES. [2024-06-28 01:43:31,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13812 conditions, 2207 events. 1272/2207 cut-off events. For 39362/39362 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12199 event pairs, 225 based on Foata normal form. 1/2149 useless extension candidates. Maximal degree in co-relation 13728. Up to 1791 conditions per place. [2024-06-28 01:43:31,360 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 227 selfloop transitions, 52 changer transitions 0/285 dead transitions. [2024-06-28 01:43:31,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 285 transitions, 4573 flow [2024-06-28 01:43:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:43:31,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:43:31,361 INFO L175 Difference]: Start difference. First operand has 177 places, 246 transitions, 3651 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:43:31,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 285 transitions, 4573 flow [2024-06-28 01:43:31,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 285 transitions, 4359 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:31,440 INFO L231 Difference]: Finished difference. Result has 180 places, 249 transitions, 3586 flow [2024-06-28 01:43:31,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3448, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3586, PETRI_PLACES=180, PETRI_TRANSITIONS=249} [2024-06-28 01:43:31,441 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 139 predicate places. [2024-06-28 01:43:31,441 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 249 transitions, 3586 flow [2024-06-28 01:43:31,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:31,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:31,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:31,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 01:43:31,442 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 01:43:31,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2145164982, now seen corresponding path program 7 times [2024-06-28 01:43:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926658493] [2024-06-28 01:43:31,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:31,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:31,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:31,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926658493] [2024-06-28 01:43:31,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926658493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:31,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:31,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042118637] [2024-06-28 01:43:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:31,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:31,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:31,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 249 transitions, 3586 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:31,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:31,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:31,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:32,347 INFO L124 PetriNetUnfolderBase]: 1268/2206 cut-off events. [2024-06-28 01:43:32,347 INFO L125 PetriNetUnfolderBase]: For 39026/39026 co-relation queries the response was YES. [2024-06-28 01:43:32,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13486 conditions, 2206 events. 1268/2206 cut-off events. For 39026/39026 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12168 event pairs, 211 based on Foata normal form. 2/2146 useless extension candidates. Maximal degree in co-relation 13401. Up to 1365 conditions per place. [2024-06-28 01:43:32,366 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 159 selfloop transitions, 111 changer transitions 0/276 dead transitions. [2024-06-28 01:43:32,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 276 transitions, 4306 flow [2024-06-28 01:43:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-28 01:43:32,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-28 01:43:32,368 INFO L175 Difference]: Start difference. First operand has 180 places, 249 transitions, 3586 flow. Second operand 8 states and 144 transitions. [2024-06-28 01:43:32,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 276 transitions, 4306 flow [2024-06-28 01:43:32,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 276 transitions, 4172 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:32,463 INFO L231 Difference]: Finished difference. Result has 181 places, 249 transitions, 3681 flow [2024-06-28 01:43:32,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3681, PETRI_PLACES=181, PETRI_TRANSITIONS=249} [2024-06-28 01:43:32,464 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 140 predicate places. [2024-06-28 01:43:32,464 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 249 transitions, 3681 flow [2024-06-28 01:43:32,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:32,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:32,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:32,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 01:43:32,465 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 01:43:32,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2140278835, now seen corresponding path program 2 times [2024-06-28 01:43:32,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:32,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953719894] [2024-06-28 01:43:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:32,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:33,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:33,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953719894] [2024-06-28 01:43:33,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953719894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:33,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:33,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:33,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997266328] [2024-06-28 01:43:33,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:33,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:33,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:33,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:33,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 249 transitions, 3681 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:33,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:33,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:33,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:33,567 INFO L124 PetriNetUnfolderBase]: 1281/2224 cut-off events. [2024-06-28 01:43:33,567 INFO L125 PetriNetUnfolderBase]: For 40960/40960 co-relation queries the response was YES. [2024-06-28 01:43:33,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13811 conditions, 2224 events. 1281/2224 cut-off events. For 40960/40960 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12313 event pairs, 224 based on Foata normal form. 1/2165 useless extension candidates. Maximal degree in co-relation 13725. Up to 1799 conditions per place. [2024-06-28 01:43:33,586 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 228 selfloop transitions, 59 changer transitions 0/293 dead transitions. [2024-06-28 01:43:33,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 293 transitions, 4646 flow [2024-06-28 01:43:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:33,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:43:33,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:43:33,589 INFO L175 Difference]: Start difference. First operand has 181 places, 249 transitions, 3681 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:43:33,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 293 transitions, 4646 flow [2024-06-28 01:43:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 293 transitions, 4322 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 01:43:33,677 INFO L231 Difference]: Finished difference. Result has 183 places, 252 transitions, 3527 flow [2024-06-28 01:43:33,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3527, PETRI_PLACES=183, PETRI_TRANSITIONS=252} [2024-06-28 01:43:33,677 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 142 predicate places. [2024-06-28 01:43:33,678 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 252 transitions, 3527 flow [2024-06-28 01:43:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:33,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:33,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:33,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 01:43:33,678 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 01:43:33,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:33,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2140605265, now seen corresponding path program 3 times [2024-06-28 01:43:33,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:33,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197392816] [2024-06-28 01:43:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:33,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:34,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:34,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:34,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197392816] [2024-06-28 01:43:34,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197392816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:34,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:34,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:34,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324599774] [2024-06-28 01:43:34,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:34,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:34,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:34,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:34,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:34,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:34,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 252 transitions, 3527 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:34,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:34,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:34,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:34,781 INFO L124 PetriNetUnfolderBase]: 1279/2224 cut-off events. [2024-06-28 01:43:34,781 INFO L125 PetriNetUnfolderBase]: For 38956/38956 co-relation queries the response was YES. [2024-06-28 01:43:34,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13539 conditions, 2224 events. 1279/2224 cut-off events. For 38956/38956 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12356 event pairs, 221 based on Foata normal form. 1/2164 useless extension candidates. Maximal degree in co-relation 13453. Up to 1797 conditions per place. [2024-06-28 01:43:34,803 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 230 selfloop transitions, 57 changer transitions 0/293 dead transitions. [2024-06-28 01:43:34,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 293 transitions, 4394 flow [2024-06-28 01:43:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-28 01:43:34,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-28 01:43:34,805 INFO L175 Difference]: Start difference. First operand has 183 places, 252 transitions, 3527 flow. Second operand 9 states and 156 transitions. [2024-06-28 01:43:34,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 293 transitions, 4394 flow [2024-06-28 01:43:34,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 293 transitions, 4303 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:34,904 INFO L231 Difference]: Finished difference. Result has 185 places, 252 transitions, 3557 flow [2024-06-28 01:43:34,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3557, PETRI_PLACES=185, PETRI_TRANSITIONS=252} [2024-06-28 01:43:34,904 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-28 01:43:34,904 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 252 transitions, 3557 flow [2024-06-28 01:43:34,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:34,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:34,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:34,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 01:43:34,905 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 01:43:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 166919666, now seen corresponding path program 5 times [2024-06-28 01:43:34,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:34,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104988881] [2024-06-28 01:43:34,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:34,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:35,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:35,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104988881] [2024-06-28 01:43:35,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104988881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:35,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:35,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:35,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9005485] [2024-06-28 01:43:35,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:35,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:35,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:35,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:35,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:35,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 252 transitions, 3557 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:35,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:35,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:35,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:36,250 INFO L124 PetriNetUnfolderBase]: 1358/2352 cut-off events. [2024-06-28 01:43:36,250 INFO L125 PetriNetUnfolderBase]: For 43344/43344 co-relation queries the response was YES. [2024-06-28 01:43:36,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14334 conditions, 2352 events. 1358/2352 cut-off events. For 43344/43344 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 13090 event pairs, 244 based on Foata normal form. 2/2294 useless extension candidates. Maximal degree in co-relation 14247. Up to 1981 conditions per place. [2024-06-28 01:43:36,270 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 238 selfloop transitions, 72 changer transitions 0/316 dead transitions. [2024-06-28 01:43:36,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 316 transitions, 4750 flow [2024-06-28 01:43:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:36,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:36,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-28 01:43:36,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-28 01:43:36,274 INFO L175 Difference]: Start difference. First operand has 185 places, 252 transitions, 3557 flow. Second operand 9 states and 154 transitions. [2024-06-28 01:43:36,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 316 transitions, 4750 flow [2024-06-28 01:43:36,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 316 transitions, 4581 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:36,384 INFO L231 Difference]: Finished difference. Result has 188 places, 280 transitions, 4056 flow [2024-06-28 01:43:36,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3388, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4056, PETRI_PLACES=188, PETRI_TRANSITIONS=280} [2024-06-28 01:43:36,385 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:43:36,385 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 280 transitions, 4056 flow [2024-06-28 01:43:36,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:36,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:36,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:36,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 01:43:36,386 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 01:43:36,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:36,386 INFO L85 PathProgramCache]: Analyzing trace with hash 932773870, now seen corresponding path program 6 times [2024-06-28 01:43:36,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:36,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817481961] [2024-06-28 01:43:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:36,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:36,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:36,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817481961] [2024-06-28 01:43:36,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817481961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:36,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:36,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658479099] [2024-06-28 01:43:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:36,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:36,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:36,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:36,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:36,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:36,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 280 transitions, 4056 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:36,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:36,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:36,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:37,613 INFO L124 PetriNetUnfolderBase]: 1424/2475 cut-off events. [2024-06-28 01:43:37,613 INFO L125 PetriNetUnfolderBase]: For 48347/48347 co-relation queries the response was YES. [2024-06-28 01:43:37,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15395 conditions, 2475 events. 1424/2475 cut-off events. For 48347/48347 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14099 event pairs, 272 based on Foata normal form. 2/2416 useless extension candidates. Maximal degree in co-relation 15304. Up to 2078 conditions per place. [2024-06-28 01:43:37,634 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 83 changer transitions 0/328 dead transitions. [2024-06-28 01:43:37,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 328 transitions, 5084 flow [2024-06-28 01:43:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-28 01:43:37,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-28 01:43:37,636 INFO L175 Difference]: Start difference. First operand has 188 places, 280 transitions, 4056 flow. Second operand 9 states and 153 transitions. [2024-06-28 01:43:37,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 328 transitions, 5084 flow [2024-06-28 01:43:37,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 328 transitions, 4889 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:37,747 INFO L231 Difference]: Finished difference. Result has 195 places, 298 transitions, 4378 flow [2024-06-28 01:43:37,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3913, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4378, PETRI_PLACES=195, PETRI_TRANSITIONS=298} [2024-06-28 01:43:37,749 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 154 predicate places. [2024-06-28 01:43:37,749 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 298 transitions, 4378 flow [2024-06-28 01:43:37,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:37,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:37,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:37,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 01:43:37,750 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 01:43:37,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:37,750 INFO L85 PathProgramCache]: Analyzing trace with hash 954111945, now seen corresponding path program 2 times [2024-06-28 01:43:37,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:37,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419858037] [2024-06-28 01:43:37,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:37,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:38,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:38,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:38,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419858037] [2024-06-28 01:43:38,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419858037] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:38,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:38,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:43:38,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306341971] [2024-06-28 01:43:38,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:38,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:43:38,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:38,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:43:38,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:43:38,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:38,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 298 transitions, 4378 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:38,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:38,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:38,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:38,942 INFO L124 PetriNetUnfolderBase]: 1460/2523 cut-off events. [2024-06-28 01:43:38,942 INFO L125 PetriNetUnfolderBase]: For 50053/50053 co-relation queries the response was YES. [2024-06-28 01:43:38,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16222 conditions, 2523 events. 1460/2523 cut-off events. For 50053/50053 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 14314 event pairs, 285 based on Foata normal form. 1/2464 useless extension candidates. Maximal degree in co-relation 16128. Up to 2113 conditions per place. [2024-06-28 01:43:38,965 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 92 changer transitions 0/338 dead transitions. [2024-06-28 01:43:38,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 338 transitions, 5477 flow [2024-06-28 01:43:38,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-28 01:43:38,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-28 01:43:38,967 INFO L175 Difference]: Start difference. First operand has 195 places, 298 transitions, 4378 flow. Second operand 8 states and 138 transitions. [2024-06-28 01:43:38,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 338 transitions, 5477 flow [2024-06-28 01:43:39,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 338 transitions, 5298 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:39,102 INFO L231 Difference]: Finished difference. Result has 200 places, 313 transitions, 4767 flow [2024-06-28 01:43:39,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4767, PETRI_PLACES=200, PETRI_TRANSITIONS=313} [2024-06-28 01:43:39,102 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-28 01:43:39,103 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 313 transitions, 4767 flow [2024-06-28 01:43:39,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:39,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:39,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:39,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 01:43:39,103 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 01:43:39,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:39,103 INFO L85 PathProgramCache]: Analyzing trace with hash 708023190, now seen corresponding path program 7 times [2024-06-28 01:43:39,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:39,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542878652] [2024-06-28 01:43:39,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:39,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:39,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:39,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542878652] [2024-06-28 01:43:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542878652] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:39,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137827078] [2024-06-28 01:43:39,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:39,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:39,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:39,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:39,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 313 transitions, 4767 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:39,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:39,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:39,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:40,267 INFO L124 PetriNetUnfolderBase]: 1508/2609 cut-off events. [2024-06-28 01:43:40,268 INFO L125 PetriNetUnfolderBase]: For 52431/52431 co-relation queries the response was YES. [2024-06-28 01:43:40,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16652 conditions, 2609 events. 1508/2609 cut-off events. For 52431/52431 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15018 event pairs, 211 based on Foata normal form. 2/2552 useless extension candidates. Maximal degree in co-relation 16556. Up to 2114 conditions per place. [2024-06-28 01:43:40,290 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 256 selfloop transitions, 99 changer transitions 0/361 dead transitions. [2024-06-28 01:43:40,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 361 transitions, 5801 flow [2024-06-28 01:43:40,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:40,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:40,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-28 01:43:40,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-28 01:43:40,291 INFO L175 Difference]: Start difference. First operand has 200 places, 313 transitions, 4767 flow. Second operand 9 states and 150 transitions. [2024-06-28 01:43:40,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 361 transitions, 5801 flow [2024-06-28 01:43:40,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 361 transitions, 5691 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 01:43:40,433 INFO L231 Difference]: Finished difference. Result has 208 places, 332 transitions, 5146 flow [2024-06-28 01:43:40,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5146, PETRI_PLACES=208, PETRI_TRANSITIONS=332} [2024-06-28 01:43:40,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 167 predicate places. [2024-06-28 01:43:40,434 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 332 transitions, 5146 flow [2024-06-28 01:43:40,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:40,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:40,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:40,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 01:43:40,435 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 01:43:40,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:40,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2140266931, now seen corresponding path program 1 times [2024-06-28 01:43:40,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:40,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580952152] [2024-06-28 01:43:40,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:40,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:41,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:41,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580952152] [2024-06-28 01:43:41,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580952152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:41,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:41,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368053972] [2024-06-28 01:43:41,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:41,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:41,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:41,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:41,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:41,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:41,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 332 transitions, 5146 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:41,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:41,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:41,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:41,881 INFO L124 PetriNetUnfolderBase]: 1588/2755 cut-off events. [2024-06-28 01:43:41,881 INFO L125 PetriNetUnfolderBase]: For 65271/65271 co-relation queries the response was YES. [2024-06-28 01:43:41,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17888 conditions, 2755 events. 1588/2755 cut-off events. For 65271/65271 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16176 event pairs, 245 based on Foata normal form. 14/2706 useless extension candidates. Maximal degree in co-relation 17789. Up to 1427 conditions per place. [2024-06-28 01:43:41,904 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 208 selfloop transitions, 170 changer transitions 0/384 dead transitions. [2024-06-28 01:43:41,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 384 transitions, 6530 flow [2024-06-28 01:43:41,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:41,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:41,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 187 transitions. [2024-06-28 01:43:41,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054054054054054 [2024-06-28 01:43:41,906 INFO L175 Difference]: Start difference. First operand has 208 places, 332 transitions, 5146 flow. Second operand 10 states and 187 transitions. [2024-06-28 01:43:41,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 384 transitions, 6530 flow [2024-06-28 01:43:42,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 384 transitions, 6445 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:42,063 INFO L231 Difference]: Finished difference. Result has 214 places, 335 transitions, 5478 flow [2024-06-28 01:43:42,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5061, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5478, PETRI_PLACES=214, PETRI_TRANSITIONS=335} [2024-06-28 01:43:42,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 01:43:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 335 transitions, 5478 flow [2024-06-28 01:43:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:42,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:42,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 01:43:42,064 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:43:42,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash 692270958, now seen corresponding path program 1 times [2024-06-28 01:43:42,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240326190] [2024-06-28 01:43:42,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:42,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:42,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:42,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240326190] [2024-06-28 01:43:42,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240326190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:42,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:42,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:43:42,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289629187] [2024-06-28 01:43:42,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:42,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:43:42,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:42,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:43:42,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:43:42,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:43:42,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 335 transitions, 5478 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:42,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:42,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:43:42,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:42,429 INFO L124 PetriNetUnfolderBase]: 763/1596 cut-off events. [2024-06-28 01:43:42,429 INFO L125 PetriNetUnfolderBase]: For 35403/35538 co-relation queries the response was YES. [2024-06-28 01:43:42,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9463 conditions, 1596 events. 763/1596 cut-off events. For 35403/35538 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10372 event pairs, 135 based on Foata normal form. 137/1631 useless extension candidates. Maximal degree in co-relation 9364. Up to 545 conditions per place. [2024-06-28 01:43:42,445 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 99 selfloop transitions, 39 changer transitions 0/228 dead transitions. [2024-06-28 01:43:42,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 228 transitions, 3783 flow [2024-06-28 01:43:42,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 01:43:42,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 01:43:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-28 01:43:42,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6824324324324325 [2024-06-28 01:43:42,446 INFO L175 Difference]: Start difference. First operand has 214 places, 335 transitions, 5478 flow. Second operand 4 states and 101 transitions. [2024-06-28 01:43:42,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 228 transitions, 3783 flow [2024-06-28 01:43:42,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 228 transitions, 2872 flow, removed 31 selfloop flow, removed 43 redundant places. [2024-06-28 01:43:42,531 INFO L231 Difference]: Finished difference. Result has 176 places, 208 transitions, 2562 flow [2024-06-28 01:43:42,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2562, PETRI_PLACES=176, PETRI_TRANSITIONS=208} [2024-06-28 01:43:42,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-28 01:43:42,532 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 208 transitions, 2562 flow [2024-06-28 01:43:42,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:42,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:42,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:42,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 01:43:42,532 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 01:43:42,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1751956997, now seen corresponding path program 1 times [2024-06-28 01:43:42,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:42,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51412896] [2024-06-28 01:43:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:42,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:43,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:43,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:43,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51412896] [2024-06-28 01:43:43,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51412896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:43,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:43,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:43,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722107593] [2024-06-28 01:43:43,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:43,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:43,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:43,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:43,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:43,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:43,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 208 transitions, 2562 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:43,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:43,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:43,627 INFO L124 PetriNetUnfolderBase]: 1062/1937 cut-off events. [2024-06-28 01:43:43,627 INFO L125 PetriNetUnfolderBase]: For 34897/34897 co-relation queries the response was YES. [2024-06-28 01:43:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11125 conditions, 1937 events. 1062/1937 cut-off events. For 34897/34897 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 10844 event pairs, 167 based on Foata normal form. 2/1868 useless extension candidates. Maximal degree in co-relation 11040. Up to 1371 conditions per place. [2024-06-28 01:43:43,642 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 154 selfloop transitions, 71 changer transitions 0/232 dead transitions. [2024-06-28 01:43:43,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 232 transitions, 3168 flow [2024-06-28 01:43:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 01:43:43,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:43:43,644 INFO L175 Difference]: Start difference. First operand has 176 places, 208 transitions, 2562 flow. Second operand 8 states and 126 transitions. [2024-06-28 01:43:43,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 232 transitions, 3168 flow [2024-06-28 01:43:43,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 232 transitions, 3162 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:43:43,737 INFO L231 Difference]: Finished difference. Result has 182 places, 210 transitions, 2752 flow [2024-06-28 01:43:43,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2556, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2752, PETRI_PLACES=182, PETRI_TRANSITIONS=210} [2024-06-28 01:43:43,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-28 01:43:43,738 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 210 transitions, 2752 flow [2024-06-28 01:43:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:43,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:43,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 01:43:43,742 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 01:43:43,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1443701685, now seen corresponding path program 2 times [2024-06-28 01:43:43,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:43,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002788370] [2024-06-28 01:43:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:43,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:44,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:44,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:44,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002788370] [2024-06-28 01:43:44,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002788370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:44,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:44,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:44,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573162641] [2024-06-28 01:43:44,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:44,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:44,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:44,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:44,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:44,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:44,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 210 transitions, 2752 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:44,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:44,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:44,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:45,019 INFO L124 PetriNetUnfolderBase]: 1097/2002 cut-off events. [2024-06-28 01:43:45,020 INFO L125 PetriNetUnfolderBase]: For 40299/40299 co-relation queries the response was YES. [2024-06-28 01:43:45,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11875 conditions, 2002 events. 1097/2002 cut-off events. For 40299/40299 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11366 event pairs, 306 based on Foata normal form. 2/1927 useless extension candidates. Maximal degree in co-relation 11788. Up to 1633 conditions per place. [2024-06-28 01:43:45,035 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 176 selfloop transitions, 53 changer transitions 0/236 dead transitions. [2024-06-28 01:43:45,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 236 transitions, 3490 flow [2024-06-28 01:43:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-28 01:43:45,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:43:45,036 INFO L175 Difference]: Start difference. First operand has 182 places, 210 transitions, 2752 flow. Second operand 8 states and 128 transitions. [2024-06-28 01:43:45,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 236 transitions, 3490 flow [2024-06-28 01:43:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 236 transitions, 3328 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:45,148 INFO L231 Difference]: Finished difference. Result has 184 places, 214 transitions, 2785 flow [2024-06-28 01:43:45,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2785, PETRI_PLACES=184, PETRI_TRANSITIONS=214} [2024-06-28 01:43:45,149 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-28 01:43:45,149 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 214 transitions, 2785 flow [2024-06-28 01:43:45,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:45,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:45,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 01:43:45,149 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 01:43:45,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:45,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1112607063, now seen corresponding path program 1 times [2024-06-28 01:43:45,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:45,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414933975] [2024-06-28 01:43:45,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:45,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:45,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414933975] [2024-06-28 01:43:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414933975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149300079] [2024-06-28 01:43:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:45,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:45,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:45,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:45,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:45,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 214 transitions, 2785 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:45,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:45,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:45,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:46,254 INFO L124 PetriNetUnfolderBase]: 1095/1999 cut-off events. [2024-06-28 01:43:46,254 INFO L125 PetriNetUnfolderBase]: For 39632/39632 co-relation queries the response was YES. [2024-06-28 01:43:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11814 conditions, 1999 events. 1095/1999 cut-off events. For 39632/39632 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11325 event pairs, 308 based on Foata normal form. 1/1921 useless extension candidates. Maximal degree in co-relation 11726. Up to 1697 conditions per place. [2024-06-28 01:43:46,304 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 167 selfloop transitions, 57 changer transitions 0/231 dead transitions. [2024-06-28 01:43:46,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 231 transitions, 3317 flow [2024-06-28 01:43:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:46,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 121 transitions. [2024-06-28 01:43:46,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40878378378378377 [2024-06-28 01:43:46,305 INFO L175 Difference]: Start difference. First operand has 184 places, 214 transitions, 2785 flow. Second operand 8 states and 121 transitions. [2024-06-28 01:43:46,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 231 transitions, 3317 flow [2024-06-28 01:43:46,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 231 transitions, 3203 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:46,419 INFO L231 Difference]: Finished difference. Result has 188 places, 214 transitions, 2797 flow [2024-06-28 01:43:46,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2797, PETRI_PLACES=188, PETRI_TRANSITIONS=214} [2024-06-28 01:43:46,419 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 147 predicate places. [2024-06-28 01:43:46,419 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 214 transitions, 2797 flow [2024-06-28 01:43:46,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:46,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:46,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:46,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 01:43:46,420 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 01:43:46,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:46,421 INFO L85 PathProgramCache]: Analyzing trace with hash 253137701, now seen corresponding path program 3 times [2024-06-28 01:43:46,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:46,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964657944] [2024-06-28 01:43:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:47,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964657944] [2024-06-28 01:43:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964657944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029770169] [2024-06-28 01:43:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:47,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:47,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:47,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:47,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:47,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:47,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 214 transitions, 2797 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:47,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:47,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:47,611 INFO L124 PetriNetUnfolderBase]: 1092/1994 cut-off events. [2024-06-28 01:43:47,611 INFO L125 PetriNetUnfolderBase]: For 39336/39336 co-relation queries the response was YES. [2024-06-28 01:43:47,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11772 conditions, 1994 events. 1092/1994 cut-off events. For 39336/39336 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11289 event pairs, 307 based on Foata normal form. 2/1918 useless extension candidates. Maximal degree in co-relation 11682. Up to 1688 conditions per place. [2024-06-28 01:43:47,629 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 171 selfloop transitions, 55 changer transitions 0/233 dead transitions. [2024-06-28 01:43:47,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 233 transitions, 3349 flow [2024-06-28 01:43:47,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:47,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:47,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 123 transitions. [2024-06-28 01:43:47,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155405405405405 [2024-06-28 01:43:47,631 INFO L175 Difference]: Start difference. First operand has 188 places, 214 transitions, 2797 flow. Second operand 8 states and 123 transitions. [2024-06-28 01:43:47,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 233 transitions, 3349 flow [2024-06-28 01:43:47,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 233 transitions, 3125 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 01:43:47,749 INFO L231 Difference]: Finished difference. Result has 187 places, 214 transitions, 2693 flow [2024-06-28 01:43:47,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2693, PETRI_PLACES=187, PETRI_TRANSITIONS=214} [2024-06-28 01:43:47,750 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-28 01:43:47,750 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 214 transitions, 2693 flow [2024-06-28 01:43:47,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:47,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:47,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:47,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 01:43:47,751 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 01:43:47,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:47,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1544997163, now seen corresponding path program 1 times [2024-06-28 01:43:47,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:47,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208305] [2024-06-28 01:43:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:47,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:47,757 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 [1208305] [2024-06-28 01:43:48,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208305] 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 [8] imperfect sequences [] total 8 [2024-06-28 01:43:48,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276315355] [2024-06-28 01:43:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:48,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:48,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:48,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 214 transitions, 2693 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:48,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:48,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:48,681 INFO L124 PetriNetUnfolderBase]: 1103/2007 cut-off events. [2024-06-28 01:43:48,681 INFO L125 PetriNetUnfolderBase]: For 39061/39063 co-relation queries the response was YES. [2024-06-28 01:43:48,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11709 conditions, 2007 events. 1103/2007 cut-off events. For 39061/39063 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11335 event pairs, 305 based on Foata normal form. 4/1930 useless extension candidates. Maximal degree in co-relation 11618. Up to 1732 conditions per place. [2024-06-28 01:43:48,697 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 186 selfloop transitions, 46 changer transitions 0/239 dead transitions. [2024-06-28 01:43:48,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 239 transitions, 3306 flow [2024-06-28 01:43:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 01:43:48,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024024024024024 [2024-06-28 01:43:48,698 INFO L175 Difference]: Start difference. First operand has 187 places, 214 transitions, 2693 flow. Second operand 9 states and 134 transitions. [2024-06-28 01:43:48,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 239 transitions, 3306 flow [2024-06-28 01:43:48,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 239 transitions, 3186 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:48,809 INFO L231 Difference]: Finished difference. Result has 189 places, 216 transitions, 2693 flow [2024-06-28 01:43:48,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2693, PETRI_PLACES=189, PETRI_TRANSITIONS=216} [2024-06-28 01:43:48,809 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-28 01:43:48,809 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 216 transitions, 2693 flow [2024-06-28 01:43:48,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:48,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:48,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:48,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 01:43:48,810 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 01:43:48,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:48,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1372268263, now seen corresponding path program 2 times [2024-06-28 01:43:48,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:48,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069433979] [2024-06-28 01:43:48,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:48,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:49,297 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 01:43:49,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:49,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069433979] [2024-06-28 01:43:49,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069433979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:49,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755562051] [2024-06-28 01:43:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:49,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:49,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:49,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 216 transitions, 2693 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:49,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:49,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:49,762 INFO L124 PetriNetUnfolderBase]: 1127/2045 cut-off events. [2024-06-28 01:43:49,762 INFO L125 PetriNetUnfolderBase]: For 42165/42165 co-relation queries the response was YES. [2024-06-28 01:43:49,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11917 conditions, 2045 events. 1127/2045 cut-off events. For 42165/42165 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11552 event pairs, 307 based on Foata normal form. 4/1963 useless extension candidates. Maximal degree in co-relation 11825. Up to 1351 conditions per place. [2024-06-28 01:43:49,779 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 142 selfloop transitions, 93 changer transitions 0/242 dead transitions. [2024-06-28 01:43:49,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 242 transitions, 3508 flow [2024-06-28 01:43:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:49,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:43:49,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:43:49,780 INFO L175 Difference]: Start difference. First operand has 189 places, 216 transitions, 2693 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:43:49,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 242 transitions, 3508 flow [2024-06-28 01:43:49,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 242 transitions, 3413 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:49,901 INFO L231 Difference]: Finished difference. Result has 191 places, 220 transitions, 2841 flow [2024-06-28 01:43:49,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2841, PETRI_PLACES=191, PETRI_TRANSITIONS=220} [2024-06-28 01:43:49,902 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-28 01:43:49,902 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 220 transitions, 2841 flow [2024-06-28 01:43:49,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:49,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:49,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 01:43:49,903 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 01:43:49,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1372276633, now seen corresponding path program 3 times [2024-06-28 01:43:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130582559] [2024-06-28 01:43:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:49,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:50,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:50,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:50,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130582559] [2024-06-28 01:43:50,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130582559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:50,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:50,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:50,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156852711] [2024-06-28 01:43:50,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:50,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:50,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:50,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:50,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:50,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:50,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 220 transitions, 2841 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:50,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:50,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:50,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:50,833 INFO L124 PetriNetUnfolderBase]: 1138/2062 cut-off events. [2024-06-28 01:43:50,834 INFO L125 PetriNetUnfolderBase]: For 42226/42226 co-relation queries the response was YES. [2024-06-28 01:43:50,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12272 conditions, 2062 events. 1138/2062 cut-off events. For 42226/42226 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11646 event pairs, 314 based on Foata normal form. 2/1977 useless extension candidates. Maximal degree in co-relation 12179. Up to 1355 conditions per place. [2024-06-28 01:43:50,856 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 146 selfloop transitions, 91 changer transitions 0/244 dead transitions. [2024-06-28 01:43:50,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 244 transitions, 3644 flow [2024-06-28 01:43:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:50,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:50,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:43:50,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:43:50,857 INFO L175 Difference]: Start difference. First operand has 191 places, 220 transitions, 2841 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:43:50,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 244 transitions, 3644 flow [2024-06-28 01:43:50,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 244 transitions, 3461 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:51,000 INFO L231 Difference]: Finished difference. Result has 194 places, 222 transitions, 2874 flow [2024-06-28 01:43:51,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2874, PETRI_PLACES=194, PETRI_TRANSITIONS=222} [2024-06-28 01:43:51,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 153 predicate places. [2024-06-28 01:43:51,001 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 222 transitions, 2874 flow [2024-06-28 01:43:51,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:51,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 01:43:51,002 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 01:43:51,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:51,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1378943307, now seen corresponding path program 4 times [2024-06-28 01:43:51,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:51,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047624999] [2024-06-28 01:43:51,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:51,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:51,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047624999] [2024-06-28 01:43:51,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047624999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:51,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:51,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:51,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065241673] [2024-06-28 01:43:51,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:51,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:51,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:51,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:51,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 222 transitions, 2874 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:51,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:51,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:51,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:52,240 INFO L124 PetriNetUnfolderBase]: 1154/2090 cut-off events. [2024-06-28 01:43:52,240 INFO L125 PetriNetUnfolderBase]: For 43392/43392 co-relation queries the response was YES. [2024-06-28 01:43:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12508 conditions, 2090 events. 1154/2090 cut-off events. For 43392/43392 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11841 event pairs, 322 based on Foata normal form. 2/2006 useless extension candidates. Maximal degree in co-relation 12415. Up to 1698 conditions per place. [2024-06-28 01:43:52,257 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 175 selfloop transitions, 60 changer transitions 0/242 dead transitions. [2024-06-28 01:43:52,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 242 transitions, 3486 flow [2024-06-28 01:43:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-28 01:43:52,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-28 01:43:52,259 INFO L175 Difference]: Start difference. First operand has 194 places, 222 transitions, 2874 flow. Second operand 8 states and 126 transitions. [2024-06-28 01:43:52,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 242 transitions, 3486 flow [2024-06-28 01:43:52,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 242 transitions, 3320 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:52,407 INFO L231 Difference]: Finished difference. Result has 196 places, 224 transitions, 2881 flow [2024-06-28 01:43:52,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2881, PETRI_PLACES=196, PETRI_TRANSITIONS=224} [2024-06-28 01:43:52,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-28 01:43:52,408 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 224 transitions, 2881 flow [2024-06-28 01:43:52,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:52,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:52,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:52,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 01:43:52,408 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 01:43:52,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:52,409 INFO L85 PathProgramCache]: Analyzing trace with hash 423835481, now seen corresponding path program 5 times [2024-06-28 01:43:52,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:52,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787094349] [2024-06-28 01:43:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:52,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:53,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787094349] [2024-06-28 01:43:53,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787094349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:53,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:53,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:53,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795878243] [2024-06-28 01:43:53,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:53,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:53,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:53,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:53,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:53,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:53,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 224 transitions, 2881 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:53,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:53,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:53,613 INFO L124 PetriNetUnfolderBase]: 1173/2124 cut-off events. [2024-06-28 01:43:53,613 INFO L125 PetriNetUnfolderBase]: For 45717/45717 co-relation queries the response was YES. [2024-06-28 01:43:53,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12708 conditions, 2124 events. 1173/2124 cut-off events. For 45717/45717 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12107 event pairs, 321 based on Foata normal form. 2/2043 useless extension candidates. Maximal degree in co-relation 12614. Up to 1618 conditions per place. [2024-06-28 01:43:53,632 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 175 selfloop transitions, 67 changer transitions 0/249 dead transitions. [2024-06-28 01:43:53,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 249 transitions, 3671 flow [2024-06-28 01:43:53,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:53,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-28 01:43:53,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-28 01:43:53,633 INFO L175 Difference]: Start difference. First operand has 196 places, 224 transitions, 2881 flow. Second operand 8 states and 130 transitions. [2024-06-28 01:43:53,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 249 transitions, 3671 flow [2024-06-28 01:43:53,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 249 transitions, 3514 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:53,766 INFO L231 Difference]: Finished difference. Result has 198 places, 228 transitions, 2964 flow [2024-06-28 01:43:53,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2724, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2964, PETRI_PLACES=198, PETRI_TRANSITIONS=228} [2024-06-28 01:43:53,766 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 157 predicate places. [2024-06-28 01:43:53,766 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 228 transitions, 2964 flow [2024-06-28 01:43:53,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:53,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:53,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 01:43:53,767 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 01:43:53,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash -826620479, now seen corresponding path program 6 times [2024-06-28 01:43:53,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:53,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522763238] [2024-06-28 01:43:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:54,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:54,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522763238] [2024-06-28 01:43:54,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522763238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:54,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:54,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:54,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525409684] [2024-06-28 01:43:54,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:54,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:54,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:54,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:54,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:54,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 228 transitions, 2964 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:54,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:54,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:54,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:54,972 INFO L124 PetriNetUnfolderBase]: 1170/2119 cut-off events. [2024-06-28 01:43:54,972 INFO L125 PetriNetUnfolderBase]: For 44817/44817 co-relation queries the response was YES. [2024-06-28 01:43:54,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12628 conditions, 2119 events. 1170/2119 cut-off events. For 44817/44817 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12104 event pairs, 320 based on Foata normal form. 2/2034 useless extension candidates. Maximal degree in co-relation 12533. Up to 1726 conditions per place. [2024-06-28 01:43:54,991 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 171 selfloop transitions, 68 changer transitions 0/246 dead transitions. [2024-06-28 01:43:54,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 246 transitions, 3540 flow [2024-06-28 01:43:54,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:43:54,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:43:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-28 01:43:54,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42905405405405406 [2024-06-28 01:43:54,993 INFO L175 Difference]: Start difference. First operand has 198 places, 228 transitions, 2964 flow. Second operand 8 states and 127 transitions. [2024-06-28 01:43:54,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 246 transitions, 3540 flow [2024-06-28 01:43:55,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 246 transitions, 3385 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-28 01:43:55,160 INFO L231 Difference]: Finished difference. Result has 202 places, 228 transitions, 2950 flow [2024-06-28 01:43:55,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2809, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2950, PETRI_PLACES=202, PETRI_TRANSITIONS=228} [2024-06-28 01:43:55,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-28 01:43:55,161 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 228 transitions, 2950 flow [2024-06-28 01:43:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:55,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 01:43:55,162 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 01:43:55,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -832869645, now seen corresponding path program 4 times [2024-06-28 01:43:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:55,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363745645] [2024-06-28 01:43:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:55,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:55,636 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 01:43:55,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:55,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363745645] [2024-06-28 01:43:55,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363745645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:55,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:55,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:55,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760480660] [2024-06-28 01:43:55,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:55,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:55,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:55,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:55,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:55,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:55,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 228 transitions, 2950 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:55,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:55,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:55,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:56,181 INFO L124 PetriNetUnfolderBase]: 1206/2174 cut-off events. [2024-06-28 01:43:56,182 INFO L125 PetriNetUnfolderBase]: For 49119/49119 co-relation queries the response was YES. [2024-06-28 01:43:56,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13123 conditions, 2174 events. 1206/2174 cut-off events. For 49119/49119 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12381 event pairs, 330 based on Foata normal form. 2/2083 useless extension candidates. Maximal degree in co-relation 13026. Up to 1435 conditions per place. [2024-06-28 01:43:56,201 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 163 selfloop transitions, 86 changer transitions 0/256 dead transitions. [2024-06-28 01:43:56,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 256 transitions, 3846 flow [2024-06-28 01:43:56,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:43:56,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-28 01:43:56,203 INFO L175 Difference]: Start difference. First operand has 202 places, 228 transitions, 2950 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:43:56,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 256 transitions, 3846 flow [2024-06-28 01:43:56,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 256 transitions, 3690 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:43:56,359 INFO L231 Difference]: Finished difference. Result has 205 places, 235 transitions, 3129 flow [2024-06-28 01:43:56,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2794, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3129, PETRI_PLACES=205, PETRI_TRANSITIONS=235} [2024-06-28 01:43:56,359 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-28 01:43:56,359 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 235 transitions, 3129 flow [2024-06-28 01:43:56,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:56,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 01:43:56,360 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 01:43:56,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:56,360 INFO L85 PathProgramCache]: Analyzing trace with hash 430276165, now seen corresponding path program 5 times [2024-06-28 01:43:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856212962] [2024-06-28 01:43:56,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:56,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856212962] [2024-06-28 01:43:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856212962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:56,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:56,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:43:56,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181618019] [2024-06-28 01:43:56,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:56,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:43:56,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:56,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:43:56,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:43:56,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 235 transitions, 3129 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:57,305 INFO L124 PetriNetUnfolderBase]: 1200/2163 cut-off events. [2024-06-28 01:43:57,305 INFO L125 PetriNetUnfolderBase]: For 48812/48812 co-relation queries the response was YES. [2024-06-28 01:43:57,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13249 conditions, 2163 events. 1200/2163 cut-off events. For 48812/48812 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12287 event pairs, 317 based on Foata normal form. 2/2072 useless extension candidates. Maximal degree in co-relation 13150. Up to 1430 conditions per place. [2024-06-28 01:43:57,326 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 160 selfloop transitions, 89 changer transitions 0/256 dead transitions. [2024-06-28 01:43:57,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 256 transitions, 3929 flow [2024-06-28 01:43:57,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:43:57,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:43:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-28 01:43:57,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-28 01:43:57,327 INFO L175 Difference]: Start difference. First operand has 205 places, 235 transitions, 3129 flow. Second operand 9 states and 149 transitions. [2024-06-28 01:43:57,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 256 transitions, 3929 flow [2024-06-28 01:43:57,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 256 transitions, 3829 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-28 01:43:57,499 INFO L231 Difference]: Finished difference. Result has 209 places, 235 transitions, 3212 flow [2024-06-28 01:43:57,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3212, PETRI_PLACES=209, PETRI_TRANSITIONS=235} [2024-06-28 01:43:57,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 168 predicate places. [2024-06-28 01:43:57,499 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 235 transitions, 3212 flow [2024-06-28 01:43:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:57,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:57,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:57,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 01:43:57,500 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 01:43:57,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:57,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1924133273, now seen corresponding path program 6 times [2024-06-28 01:43:57,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:57,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105875736] [2024-06-28 01:43:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:57,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:43:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105875736] [2024-06-28 01:43:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105875736] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:58,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267118145] [2024-06-28 01:43:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:58,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:58,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:58,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:58,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:58,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:58,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 235 transitions, 3212 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:58,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:58,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:58,559 INFO L124 PetriNetUnfolderBase]: 1251/2239 cut-off events. [2024-06-28 01:43:58,559 INFO L125 PetriNetUnfolderBase]: For 58201/58201 co-relation queries the response was YES. [2024-06-28 01:43:58,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 2239 events. 1251/2239 cut-off events. For 58201/58201 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12723 event pairs, 324 based on Foata normal form. 4/2142 useless extension candidates. Maximal degree in co-relation 13867. Up to 1469 conditions per place. [2024-06-28 01:43:58,580 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 157 selfloop transitions, 103 changer transitions 0/267 dead transitions. [2024-06-28 01:43:58,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 267 transitions, 4271 flow [2024-06-28 01:43:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:43:58,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:43:58,581 INFO L175 Difference]: Start difference. First operand has 209 places, 235 transitions, 3212 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:43:58,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 267 transitions, 4271 flow [2024-06-28 01:43:58,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 267 transitions, 4112 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 01:43:58,745 INFO L231 Difference]: Finished difference. Result has 214 places, 242 transitions, 3391 flow [2024-06-28 01:43:58,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3063, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3391, PETRI_PLACES=214, PETRI_TRANSITIONS=242} [2024-06-28 01:43:58,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 173 predicate places. [2024-06-28 01:43:58,746 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 242 transitions, 3391 flow [2024-06-28 01:43:58,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:58,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:43:58,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:43:58,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 01:43:58,747 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 01:43:58,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:43:58,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1934252603, now seen corresponding path program 7 times [2024-06-28 01:43:58,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:43:58,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777169784] [2024-06-28 01:43:58,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:43:58,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:43:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:43:59,242 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 01:43:59,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:43:59,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777169784] [2024-06-28 01:43:59,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777169784] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:43:59,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:43:59,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:43:59,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201284367] [2024-06-28 01:43:59,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:43:59,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:43:59,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:43:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:43:59,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:43:59,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:43:59,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 242 transitions, 3391 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:43:59,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:43:59,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:43:59,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:43:59,805 INFO L124 PetriNetUnfolderBase]: 1317/2339 cut-off events. [2024-06-28 01:43:59,806 INFO L125 PetriNetUnfolderBase]: For 67587/67587 co-relation queries the response was YES. [2024-06-28 01:43:59,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15024 conditions, 2339 events. 1317/2339 cut-off events. For 67587/67587 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13306 event pairs, 334 based on Foata normal form. 4/2233 useless extension candidates. Maximal degree in co-relation 14922. Up to 1513 conditions per place. [2024-06-28 01:43:59,829 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 165 selfloop transitions, 105 changer transitions 0/277 dead transitions. [2024-06-28 01:43:59,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 277 transitions, 4616 flow [2024-06-28 01:43:59,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:43:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:43:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-28 01:43:59,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-28 01:43:59,830 INFO L175 Difference]: Start difference. First operand has 214 places, 242 transitions, 3391 flow. Second operand 10 states and 168 transitions. [2024-06-28 01:43:59,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 277 transitions, 4616 flow [2024-06-28 01:44:00,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 277 transitions, 4370 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:00,123 INFO L231 Difference]: Finished difference. Result has 218 places, 250 transitions, 3513 flow [2024-06-28 01:44:00,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3513, PETRI_PLACES=218, PETRI_TRANSITIONS=250} [2024-06-28 01:44:00,123 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 177 predicate places. [2024-06-28 01:44:00,123 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 250 transitions, 3513 flow [2024-06-28 01:44:00,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:00,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:00,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 01:44:00,124 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 01:44:00,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:00,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2075375813, now seen corresponding path program 8 times [2024-06-28 01:44:00,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:00,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281985041] [2024-06-28 01:44:00,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:00,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:00,685 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 01:44:00,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:00,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281985041] [2024-06-28 01:44:00,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281985041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:00,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:00,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653766911] [2024-06-28 01:44:00,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:00,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:00,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:00,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:00,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:00,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:00,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 250 transitions, 3513 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:00,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:00,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:00,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:01,241 INFO L124 PetriNetUnfolderBase]: 1328/2357 cut-off events. [2024-06-28 01:44:01,241 INFO L125 PetriNetUnfolderBase]: For 66482/66482 co-relation queries the response was YES. [2024-06-28 01:44:01,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15151 conditions, 2357 events. 1328/2357 cut-off events. For 66482/66482 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13438 event pairs, 338 based on Foata normal form. 2/2248 useless extension candidates. Maximal degree in co-relation 15047. Up to 1517 conditions per place. [2024-06-28 01:44:01,263 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 167 selfloop transitions, 101 changer transitions 0/275 dead transitions. [2024-06-28 01:44:01,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 275 transitions, 4508 flow [2024-06-28 01:44:01,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:01,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:01,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:44:01,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:44:01,265 INFO L175 Difference]: Start difference. First operand has 218 places, 250 transitions, 3513 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:44:01,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 275 transitions, 4508 flow [2024-06-28 01:44:01,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 275 transitions, 4258 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:01,468 INFO L231 Difference]: Finished difference. Result has 221 places, 252 transitions, 3502 flow [2024-06-28 01:44:01,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3502, PETRI_PLACES=221, PETRI_TRANSITIONS=252} [2024-06-28 01:44:01,469 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-28 01:44:01,469 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 252 transitions, 3502 flow [2024-06-28 01:44:01,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:01,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:01,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 01:44:01,469 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 01:44:01,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:01,472 INFO L85 PathProgramCache]: Analyzing trace with hash 2075606453, now seen corresponding path program 9 times [2024-06-28 01:44:01,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:01,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609255504] [2024-06-28 01:44:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:01,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:01,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:01,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609255504] [2024-06-28 01:44:01,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609255504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:01,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:01,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287316148] [2024-06-28 01:44:01,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:01,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:01,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 252 transitions, 3502 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:01,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:01,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:01,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:02,514 INFO L124 PetriNetUnfolderBase]: 1339/2374 cut-off events. [2024-06-28 01:44:02,515 INFO L125 PetriNetUnfolderBase]: For 68130/68130 co-relation queries the response was YES. [2024-06-28 01:44:02,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15208 conditions, 2374 events. 1339/2374 cut-off events. For 68130/68130 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13532 event pairs, 343 based on Foata normal form. 2/2264 useless extension candidates. Maximal degree in co-relation 15103. Up to 1521 conditions per place. [2024-06-28 01:44:02,540 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 177 selfloop transitions, 95 changer transitions 0/279 dead transitions. [2024-06-28 01:44:02,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 279 transitions, 4636 flow [2024-06-28 01:44:02,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:02,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:44:02,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:44:02,541 INFO L175 Difference]: Start difference. First operand has 221 places, 252 transitions, 3502 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:44:02,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 279 transitions, 4636 flow [2024-06-28 01:44:02,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 279 transitions, 4413 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:02,777 INFO L231 Difference]: Finished difference. Result has 224 places, 255 transitions, 3523 flow [2024-06-28 01:44:02,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3523, PETRI_PLACES=224, PETRI_TRANSITIONS=255} [2024-06-28 01:44:02,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-28 01:44:02,778 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 255 transitions, 3523 flow [2024-06-28 01:44:02,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:02,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:02,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:02,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 01:44:02,778 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 01:44:02,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1934252293, now seen corresponding path program 1 times [2024-06-28 01:44:02,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:02,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737614941] [2024-06-28 01:44:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:02,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:03,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:03,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737614941] [2024-06-28 01:44:03,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737614941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:03,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:03,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:03,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803044825] [2024-06-28 01:44:03,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:03,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:03,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:03,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:03,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:03,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:03,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 255 transitions, 3523 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:03,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:03,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:03,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:04,148 INFO L124 PetriNetUnfolderBase]: 1335/2370 cut-off events. [2024-06-28 01:44:04,149 INFO L125 PetriNetUnfolderBase]: For 67087/67087 co-relation queries the response was YES. [2024-06-28 01:44:04,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15110 conditions, 2370 events. 1335/2370 cut-off events. For 67087/67087 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13568 event pairs, 382 based on Foata normal form. 1/2262 useless extension candidates. Maximal degree in co-relation 15004. Up to 2136 conditions per place. [2024-06-28 01:44:04,171 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 227 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-28 01:44:04,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 272 transitions, 4157 flow [2024-06-28 01:44:04,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 156 transitions. [2024-06-28 01:44:04,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3832923832923833 [2024-06-28 01:44:04,173 INFO L175 Difference]: Start difference. First operand has 224 places, 255 transitions, 3523 flow. Second operand 11 states and 156 transitions. [2024-06-28 01:44:04,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 272 transitions, 4157 flow [2024-06-28 01:44:04,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 272 transitions, 3923 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:04,359 INFO L231 Difference]: Finished difference. Result has 227 places, 256 transitions, 3386 flow [2024-06-28 01:44:04,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3386, PETRI_PLACES=227, PETRI_TRANSITIONS=256} [2024-06-28 01:44:04,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 186 predicate places. [2024-06-28 01:44:04,361 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 256 transitions, 3386 flow [2024-06-28 01:44:04,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:04,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:04,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 01:44:04,362 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 01:44:04,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1934260973, now seen corresponding path program 10 times [2024-06-28 01:44:04,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:04,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408427944] [2024-06-28 01:44:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:04,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:04,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:04,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408427944] [2024-06-28 01:44:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408427944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470594961] [2024-06-28 01:44:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:04,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:04,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:04,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:04,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 256 transitions, 3386 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:04,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:04,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:04,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:05,461 INFO L124 PetriNetUnfolderBase]: 1331/2360 cut-off events. [2024-06-28 01:44:05,461 INFO L125 PetriNetUnfolderBase]: For 65041/65041 co-relation queries the response was YES. [2024-06-28 01:44:05,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14617 conditions, 2360 events. 1331/2360 cut-off events. For 65041/65041 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13441 event pairs, 331 based on Foata normal form. 2/2250 useless extension candidates. Maximal degree in co-relation 14512. Up to 1516 conditions per place. [2024-06-28 01:44:05,492 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 162 selfloop transitions, 112 changer transitions 0/281 dead transitions. [2024-06-28 01:44:05,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 281 transitions, 4390 flow [2024-06-28 01:44:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:05,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:44:05,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:44:05,503 INFO L175 Difference]: Start difference. First operand has 227 places, 256 transitions, 3386 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:44:05,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 281 transitions, 4390 flow [2024-06-28 01:44:05,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 281 transitions, 4307 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:05,699 INFO L231 Difference]: Finished difference. Result has 228 places, 256 transitions, 3532 flow [2024-06-28 01:44:05,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3532, PETRI_PLACES=228, PETRI_TRANSITIONS=256} [2024-06-28 01:44:05,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 01:44:05,700 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 256 transitions, 3532 flow [2024-06-28 01:44:05,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:05,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:05,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:05,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 01:44:05,701 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 01:44:05,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:05,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2075614823, now seen corresponding path program 11 times [2024-06-28 01:44:05,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:05,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463357168] [2024-06-28 01:44:05,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:05,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:06,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:06,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463357168] [2024-06-28 01:44:06,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463357168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:06,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:06,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:06,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137000561] [2024-06-28 01:44:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:06,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:06,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:06,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:06,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 256 transitions, 3532 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:06,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:06,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:06,757 INFO L124 PetriNetUnfolderBase]: 1325/2353 cut-off events. [2024-06-28 01:44:06,757 INFO L125 PetriNetUnfolderBase]: For 64799/64799 co-relation queries the response was YES. [2024-06-28 01:44:06,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14741 conditions, 2353 events. 1325/2353 cut-off events. For 64799/64799 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 13419 event pairs, 345 based on Foata normal form. 4/2245 useless extension candidates. Maximal degree in co-relation 14635. Up to 1515 conditions per place. [2024-06-28 01:44:06,774 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 178 selfloop transitions, 93 changer transitions 0/278 dead transitions. [2024-06-28 01:44:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 278 transitions, 4520 flow [2024-06-28 01:44:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:06,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:06,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-28 01:44:06,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-28 01:44:06,775 INFO L175 Difference]: Start difference. First operand has 228 places, 256 transitions, 3532 flow. Second operand 9 states and 151 transitions. [2024-06-28 01:44:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 278 transitions, 4520 flow [2024-06-28 01:44:06,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 278 transitions, 4238 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:06,948 INFO L231 Difference]: Finished difference. Result has 228 places, 256 transitions, 3444 flow [2024-06-28 01:44:06,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3444, PETRI_PLACES=228, PETRI_TRANSITIONS=256} [2024-06-28 01:44:06,948 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-28 01:44:06,948 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 256 transitions, 3444 flow [2024-06-28 01:44:06,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:06,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:06,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:06,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 01:44:06,949 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 01:44:06,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1924132963, now seen corresponding path program 2 times [2024-06-28 01:44:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222690984] [2024-06-28 01:44:06,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:06,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:07,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:07,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:07,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222690984] [2024-06-28 01:44:07,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222690984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:07,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:07,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:07,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679705848] [2024-06-28 01:44:07,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:07,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:07,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:07,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:07,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:07,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:07,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 256 transitions, 3444 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:07,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:07,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:07,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:08,138 INFO L124 PetriNetUnfolderBase]: 1331/2365 cut-off events. [2024-06-28 01:44:08,138 INFO L125 PetriNetUnfolderBase]: For 61346/61346 co-relation queries the response was YES. [2024-06-28 01:44:08,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14703 conditions, 2365 events. 1331/2365 cut-off events. For 61346/61346 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13534 event pairs, 378 based on Foata normal form. 1/2256 useless extension candidates. Maximal degree in co-relation 14596. Up to 2131 conditions per place. [2024-06-28 01:44:08,161 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 36 changer transitions 0/274 dead transitions. [2024-06-28 01:44:08,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 274 transitions, 4099 flow [2024-06-28 01:44:08,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:08,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:08,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-28 01:44:08,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-28 01:44:08,162 INFO L175 Difference]: Start difference. First operand has 228 places, 256 transitions, 3444 flow. Second operand 10 states and 145 transitions. [2024-06-28 01:44:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 274 transitions, 4099 flow [2024-06-28 01:44:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 274 transitions, 3870 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:08,353 INFO L231 Difference]: Finished difference. Result has 230 places, 258 transitions, 3327 flow [2024-06-28 01:44:08,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3217, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3327, PETRI_PLACES=230, PETRI_TRANSITIONS=258} [2024-06-28 01:44:08,353 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 189 predicate places. [2024-06-28 01:44:08,353 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 258 transitions, 3327 flow [2024-06-28 01:44:08,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:08,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:08,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:08,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 01:44:08,354 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 01:44:08,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:08,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1923776773, now seen corresponding path program 3 times [2024-06-28 01:44:08,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:08,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032354900] [2024-06-28 01:44:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:08,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:08,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032354900] [2024-06-28 01:44:08,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032354900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:08,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:08,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399506478] [2024-06-28 01:44:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:08,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:08,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:09,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:09,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 258 transitions, 3327 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:09,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:09,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:09,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:09,594 INFO L124 PetriNetUnfolderBase]: 1327/2354 cut-off events. [2024-06-28 01:44:09,594 INFO L125 PetriNetUnfolderBase]: For 59006/59006 co-relation queries the response was YES. [2024-06-28 01:44:09,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14277 conditions, 2354 events. 1327/2354 cut-off events. For 59006/59006 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 13400 event pairs, 325 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 14170. Up to 1621 conditions per place. [2024-06-28 01:44:09,616 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 161 selfloop transitions, 117 changer transitions 0/285 dead transitions. [2024-06-28 01:44:09,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 285 transitions, 4263 flow [2024-06-28 01:44:09,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-28 01:44:09,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-28 01:44:09,617 INFO L175 Difference]: Start difference. First operand has 230 places, 258 transitions, 3327 flow. Second operand 11 states and 174 transitions. [2024-06-28 01:44:09,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 285 transitions, 4263 flow [2024-06-28 01:44:09,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 285 transitions, 4184 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:09,806 INFO L231 Difference]: Finished difference. Result has 233 places, 259 transitions, 3501 flow [2024-06-28 01:44:09,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3501, PETRI_PLACES=233, PETRI_TRANSITIONS=259} [2024-06-28 01:44:09,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-28 01:44:09,807 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 259 transitions, 3501 flow [2024-06-28 01:44:09,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:09,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:09,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:09,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 01:44:09,807 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 01:44:09,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:09,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2075615133, now seen corresponding path program 4 times [2024-06-28 01:44:09,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:09,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521076665] [2024-06-28 01:44:09,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:09,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521076665] [2024-06-28 01:44:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521076665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:10,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:10,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:10,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943295817] [2024-06-28 01:44:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:10,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:10,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:10,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:10,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 259 transitions, 3501 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:10,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:10,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:10,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:10,904 INFO L124 PetriNetUnfolderBase]: 1323/2351 cut-off events. [2024-06-28 01:44:10,904 INFO L125 PetriNetUnfolderBase]: For 59714/59714 co-relation queries the response was YES. [2024-06-28 01:44:10,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14563 conditions, 2351 events. 1323/2351 cut-off events. For 59714/59714 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 13448 event pairs, 378 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 14455. Up to 2117 conditions per place. [2024-06-28 01:44:10,931 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 34 changer transitions 0/274 dead transitions. [2024-06-28 01:44:10,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 274 transitions, 4125 flow [2024-06-28 01:44:10,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:10,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:10,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 133 transitions. [2024-06-28 01:44:10,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993993993993994 [2024-06-28 01:44:10,935 INFO L175 Difference]: Start difference. First operand has 233 places, 259 transitions, 3501 flow. Second operand 9 states and 133 transitions. [2024-06-28 01:44:10,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 274 transitions, 4125 flow [2024-06-28 01:44:11,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 274 transitions, 3897 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:11,160 INFO L231 Difference]: Finished difference. Result has 235 places, 260 transitions, 3360 flow [2024-06-28 01:44:11,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3273, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3360, PETRI_PLACES=235, PETRI_TRANSITIONS=260} [2024-06-28 01:44:11,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 194 predicate places. [2024-06-28 01:44:11,162 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 260 transitions, 3360 flow [2024-06-28 01:44:11,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:11,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:11,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 01:44:11,163 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 01:44:11,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:11,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1790289615, now seen corresponding path program 1 times [2024-06-28 01:44:11,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:11,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064315940] [2024-06-28 01:44:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064315940] [2024-06-28 01:44:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064315940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:11,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36817377] [2024-06-28 01:44:11,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:11,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:11,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 260 transitions, 3360 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:11,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:11,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:11,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:12,440 INFO L124 PetriNetUnfolderBase]: 1339/2375 cut-off events. [2024-06-28 01:44:12,440 INFO L125 PetriNetUnfolderBase]: For 62181/62181 co-relation queries the response was YES. [2024-06-28 01:44:12,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14407 conditions, 2375 events. 1339/2375 cut-off events. For 62181/62181 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 13558 event pairs, 216 based on Foata normal form. 2/2275 useless extension candidates. Maximal degree in co-relation 14298. Up to 1780 conditions per place. [2024-06-28 01:44:12,465 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 209 selfloop transitions, 73 changer transitions 0/289 dead transitions. [2024-06-28 01:44:12,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 289 transitions, 4120 flow [2024-06-28 01:44:12,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:44:12,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 01:44:12,466 INFO L175 Difference]: Start difference. First operand has 235 places, 260 transitions, 3360 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:44:12,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 289 transitions, 4120 flow [2024-06-28 01:44:12,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 289 transitions, 4045 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:12,652 INFO L231 Difference]: Finished difference. Result has 237 places, 262 transitions, 3484 flow [2024-06-28 01:44:12,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3484, PETRI_PLACES=237, PETRI_TRANSITIONS=262} [2024-06-28 01:44:12,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-28 01:44:12,653 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 262 transitions, 3484 flow [2024-06-28 01:44:12,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:12,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:12,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:12,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 01:44:12,654 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 01:44:12,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:12,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1849275795, now seen corresponding path program 2 times [2024-06-28 01:44:12,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417262207] [2024-06-28 01:44:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417262207] [2024-06-28 01:44:13,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417262207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:13,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226248123] [2024-06-28 01:44:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:13,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:13,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:13,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 262 transitions, 3484 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:13,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:13,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:13,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:14,022 INFO L124 PetriNetUnfolderBase]: 1374/2440 cut-off events. [2024-06-28 01:44:14,022 INFO L125 PetriNetUnfolderBase]: For 69837/69837 co-relation queries the response was YES. [2024-06-28 01:44:14,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15136 conditions, 2440 events. 1374/2440 cut-off events. For 69837/69837 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14082 event pairs, 345 based on Foata normal form. 2/2332 useless extension candidates. Maximal degree in co-relation 15026. Up to 1978 conditions per place. [2024-06-28 01:44:14,050 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 232 selfloop transitions, 54 changer transitions 0/293 dead transitions. [2024-06-28 01:44:14,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 293 transitions, 4426 flow [2024-06-28 01:44:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:14,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:44:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-28 01:44:14,051 INFO L175 Difference]: Start difference. First operand has 237 places, 262 transitions, 3484 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:44:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 293 transitions, 4426 flow [2024-06-28 01:44:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 293 transitions, 4243 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:14,297 INFO L231 Difference]: Finished difference. Result has 239 places, 266 transitions, 3514 flow [2024-06-28 01:44:14,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3514, PETRI_PLACES=239, PETRI_TRANSITIONS=266} [2024-06-28 01:44:14,298 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-28 01:44:14,298 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 266 transitions, 3514 flow [2024-06-28 01:44:14,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:14,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:14,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 01:44:14,298 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 01:44:14,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:14,299 INFO L85 PathProgramCache]: Analyzing trace with hash 131082036, now seen corresponding path program 1 times [2024-06-28 01:44:14,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:14,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257588149] [2024-06-28 01:44:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:14,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:14,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257588149] [2024-06-28 01:44:14,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257588149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:14,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:14,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:14,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692039552] [2024-06-28 01:44:14,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:14,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:14,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:14,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:14,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 266 transitions, 3514 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:14,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:14,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:14,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:15,474 INFO L124 PetriNetUnfolderBase]: 1369/2425 cut-off events. [2024-06-28 01:44:15,474 INFO L125 PetriNetUnfolderBase]: For 67278/67278 co-relation queries the response was YES. [2024-06-28 01:44:15,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14914 conditions, 2425 events. 1369/2425 cut-off events. For 67278/67278 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 13913 event pairs, 353 based on Foata normal form. 1/2313 useless extension candidates. Maximal degree in co-relation 14803. Up to 2102 conditions per place. [2024-06-28 01:44:15,502 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 218 selfloop transitions, 61 changer transitions 0/286 dead transitions. [2024-06-28 01:44:15,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 286 transitions, 4172 flow [2024-06-28 01:44:15,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:15,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:15,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 134 transitions. [2024-06-28 01:44:15,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024024024024024 [2024-06-28 01:44:15,508 INFO L175 Difference]: Start difference. First operand has 239 places, 266 transitions, 3514 flow. Second operand 9 states and 134 transitions. [2024-06-28 01:44:15,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 286 transitions, 4172 flow [2024-06-28 01:44:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 286 transitions, 4045 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-06-28 01:44:15,782 INFO L231 Difference]: Finished difference. Result has 243 places, 266 transitions, 3517 flow [2024-06-28 01:44:15,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3517, PETRI_PLACES=243, PETRI_TRANSITIONS=266} [2024-06-28 01:44:15,783 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 01:44:15,783 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 266 transitions, 3517 flow [2024-06-28 01:44:15,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:15,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:15,783 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 01:44:15,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 01:44:15,783 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 01:44:15,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1849425525, now seen corresponding path program 3 times [2024-06-28 01:44:15,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:15,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617849909] [2024-06-28 01:44:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:15,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:16,478 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 01:44:16,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:16,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617849909] [2024-06-28 01:44:16,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617849909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:16,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:16,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:16,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569684402] [2024-06-28 01:44:16,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:16,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:16,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:16,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:16,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:16,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:16,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 266 transitions, 3517 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:16,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:16,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:16,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:17,098 INFO L124 PetriNetUnfolderBase]: 1385/2453 cut-off events. [2024-06-28 01:44:17,098 INFO L125 PetriNetUnfolderBase]: For 70313/70313 co-relation queries the response was YES. [2024-06-28 01:44:17,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15084 conditions, 2453 events. 1385/2453 cut-off events. For 70313/70313 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14127 event pairs, 363 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 14971. Up to 2126 conditions per place. [2024-06-28 01:44:17,123 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 224 selfloop transitions, 59 changer transitions 0/290 dead transitions. [2024-06-28 01:44:17,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 290 transitions, 4237 flow [2024-06-28 01:44:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:17,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-28 01:44:17,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084084084084084 [2024-06-28 01:44:17,124 INFO L175 Difference]: Start difference. First operand has 243 places, 266 transitions, 3517 flow. Second operand 9 states and 136 transitions. [2024-06-28 01:44:17,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 290 transitions, 4237 flow [2024-06-28 01:44:17,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 290 transitions, 3958 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 01:44:17,381 INFO L231 Difference]: Finished difference. Result has 241 places, 268 transitions, 3404 flow [2024-06-28 01:44:17,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3404, PETRI_PLACES=241, PETRI_TRANSITIONS=268} [2024-06-28 01:44:17,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-28 01:44:17,381 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 268 transitions, 3404 flow [2024-06-28 01:44:17,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:17,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:17,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:17,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 01:44:17,382 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 01:44:17,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:17,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1540544909, now seen corresponding path program 4 times [2024-06-28 01:44:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:17,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002316000] [2024-06-28 01:44:17,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:17,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:18,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:18,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002316000] [2024-06-28 01:44:18,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002316000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:18,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:18,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265117052] [2024-06-28 01:44:18,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:18,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:18,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:18,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:18,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:18,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:18,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 268 transitions, 3404 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:18,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:18,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:18,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:18,665 INFO L124 PetriNetUnfolderBase]: 1382/2448 cut-off events. [2024-06-28 01:44:18,665 INFO L125 PetriNetUnfolderBase]: For 65382/65382 co-relation queries the response was YES. [2024-06-28 01:44:18,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14718 conditions, 2448 events. 1382/2448 cut-off events. For 65382/65382 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14118 event pairs, 352 based on Foata normal form. 2/2339 useless extension candidates. Maximal degree in co-relation 14604. Up to 2061 conditions per place. [2024-06-28 01:44:18,692 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 228 selfloop transitions, 57 changer transitions 0/292 dead transitions. [2024-06-28 01:44:18,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 292 transitions, 4106 flow [2024-06-28 01:44:18,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:18,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-28 01:44:18,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-28 01:44:18,694 INFO L175 Difference]: Start difference. First operand has 241 places, 268 transitions, 3404 flow. Second operand 9 states and 140 transitions. [2024-06-28 01:44:18,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 292 transitions, 4106 flow [2024-06-28 01:44:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 292 transitions, 3936 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:18,932 INFO L231 Difference]: Finished difference. Result has 243 places, 268 transitions, 3353 flow [2024-06-28 01:44:18,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3353, PETRI_PLACES=243, PETRI_TRANSITIONS=268} [2024-06-28 01:44:18,933 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-28 01:44:18,933 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 268 transitions, 3353 flow [2024-06-28 01:44:18,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:18,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:18,933 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 01:44:18,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 01:44:18,934 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 01:44:18,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:18,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1138831451, now seen corresponding path program 5 times [2024-06-28 01:44:18,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:18,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68911729] [2024-06-28 01:44:18,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:18,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:19,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:19,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:19,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68911729] [2024-06-28 01:44:19,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68911729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:19,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:19,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890676837] [2024-06-28 01:44:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:19,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:19,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:19,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:19,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:19,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:19,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 268 transitions, 3353 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:19,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:19,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:20,234 INFO L124 PetriNetUnfolderBase]: 1398/2475 cut-off events. [2024-06-28 01:44:20,234 INFO L125 PetriNetUnfolderBase]: For 67093/67093 co-relation queries the response was YES. [2024-06-28 01:44:20,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14868 conditions, 2475 events. 1398/2475 cut-off events. For 67093/67093 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14268 event pairs, 338 based on Foata normal form. 2/2362 useless extension candidates. Maximal degree in co-relation 14753. Up to 1960 conditions per place. [2024-06-28 01:44:20,262 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 198 selfloop transitions, 86 changer transitions 0/291 dead transitions. [2024-06-28 01:44:20,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 291 transitions, 4087 flow [2024-06-28 01:44:20,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:20,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:20,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:44:20,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:44:20,264 INFO L175 Difference]: Start difference. First operand has 243 places, 268 transitions, 3353 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:44:20,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 291 transitions, 4087 flow [2024-06-28 01:44:20,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 291 transitions, 3947 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:20,488 INFO L231 Difference]: Finished difference. Result has 244 places, 270 transitions, 3446 flow [2024-06-28 01:44:20,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3446, PETRI_PLACES=244, PETRI_TRANSITIONS=270} [2024-06-28 01:44:20,490 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 203 predicate places. [2024-06-28 01:44:20,490 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 270 transitions, 3446 flow [2024-06-28 01:44:20,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:20,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:20,490 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 01:44:20,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 01:44:20,490 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 01:44:20,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1345484891, now seen corresponding path program 6 times [2024-06-28 01:44:20,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:20,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142587429] [2024-06-28 01:44:20,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:20,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:21,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:21,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142587429] [2024-06-28 01:44:21,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142587429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:21,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:21,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:21,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856570691] [2024-06-28 01:44:21,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:21,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:21,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:21,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:21,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:21,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:21,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 270 transitions, 3446 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:21,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:21,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:21,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:21,848 INFO L124 PetriNetUnfolderBase]: 1414/2504 cut-off events. [2024-06-28 01:44:21,848 INFO L125 PetriNetUnfolderBase]: For 69878/69878 co-relation queries the response was YES. [2024-06-28 01:44:21,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15206 conditions, 2504 events. 1414/2504 cut-off events. For 69878/69878 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14491 event pairs, 353 based on Foata normal form. 2/2390 useless extension candidates. Maximal degree in co-relation 15090. Up to 1988 conditions per place. [2024-06-28 01:44:21,875 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 214 selfloop transitions, 72 changer transitions 0/293 dead transitions. [2024-06-28 01:44:21,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 293 transitions, 4188 flow [2024-06-28 01:44:21,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:21,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:21,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-28 01:44:21,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-28 01:44:21,877 INFO L175 Difference]: Start difference. First operand has 244 places, 270 transitions, 3446 flow. Second operand 9 states and 141 transitions. [2024-06-28 01:44:21,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 293 transitions, 4188 flow [2024-06-28 01:44:22,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 293 transitions, 3971 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:22,170 INFO L231 Difference]: Finished difference. Result has 246 places, 272 transitions, 3438 flow [2024-06-28 01:44:22,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3229, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3438, PETRI_PLACES=246, PETRI_TRANSITIONS=272} [2024-06-28 01:44:22,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-28 01:44:22,171 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 272 transitions, 3438 flow [2024-06-28 01:44:22,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:22,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:22,171 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 01:44:22,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 01:44:22,171 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 01:44:22,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:22,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1146183101, now seen corresponding path program 7 times [2024-06-28 01:44:22,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:22,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320942790] [2024-06-28 01:44:22,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:22,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:22,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:22,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:22,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320942790] [2024-06-28 01:44:22,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320942790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:22,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:22,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:22,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124857167] [2024-06-28 01:44:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:22,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:22,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:22,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:22,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:22,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:22,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 272 transitions, 3438 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:22,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:22,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:22,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:23,359 INFO L124 PetriNetUnfolderBase]: 1430/2532 cut-off events. [2024-06-28 01:44:23,360 INFO L125 PetriNetUnfolderBase]: For 72226/72226 co-relation queries the response was YES. [2024-06-28 01:44:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15340 conditions, 2532 events. 1430/2532 cut-off events. For 72226/72226 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14717 event pairs, 344 based on Foata normal form. 2/2418 useless extension candidates. Maximal degree in co-relation 15223. Up to 2016 conditions per place. [2024-06-28 01:44:23,387 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 207 selfloop transitions, 82 changer transitions 0/296 dead transitions. [2024-06-28 01:44:23,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 296 transitions, 4195 flow [2024-06-28 01:44:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:44:23,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:44:23,389 INFO L175 Difference]: Start difference. First operand has 246 places, 272 transitions, 3438 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:44:23,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 296 transitions, 4195 flow [2024-06-28 01:44:23,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 296 transitions, 4002 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:23,680 INFO L231 Difference]: Finished difference. Result has 249 places, 274 transitions, 3478 flow [2024-06-28 01:44:23,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=249, PETRI_TRANSITIONS=274} [2024-06-28 01:44:23,681 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-28 01:44:23,681 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 274 transitions, 3478 flow [2024-06-28 01:44:23,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:23,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:23,681 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 01:44:23,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 01:44:23,681 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 01:44:23,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:23,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1345490471, now seen corresponding path program 8 times [2024-06-28 01:44:23,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:23,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246079135] [2024-06-28 01:44:23,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:23,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:24,280 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 01:44:24,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:24,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246079135] [2024-06-28 01:44:24,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246079135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:24,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:24,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:24,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140001064] [2024-06-28 01:44:24,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:24,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:24,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:24,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:24,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:24,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:24,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 274 transitions, 3478 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:24,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:24,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:24,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:24,952 INFO L124 PetriNetUnfolderBase]: 1446/2560 cut-off events. [2024-06-28 01:44:24,952 INFO L125 PetriNetUnfolderBase]: For 74521/74521 co-relation queries the response was YES. [2024-06-28 01:44:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15550 conditions, 2560 events. 1446/2560 cut-off events. For 74521/74521 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14921 event pairs, 361 based on Foata normal form. 2/2447 useless extension candidates. Maximal degree in co-relation 15432. Up to 2000 conditions per place. [2024-06-28 01:44:24,984 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 217 selfloop transitions, 75 changer transitions 0/299 dead transitions. [2024-06-28 01:44:24,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 299 transitions, 4256 flow [2024-06-28 01:44:24,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:44:24,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-28 01:44:24,986 INFO L175 Difference]: Start difference. First operand has 249 places, 274 transitions, 3478 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:44:24,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 299 transitions, 4256 flow [2024-06-28 01:44:25,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 299 transitions, 4039 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:25,347 INFO L231 Difference]: Finished difference. Result has 250 places, 276 transitions, 3484 flow [2024-06-28 01:44:25,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3261, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3484, PETRI_PLACES=250, PETRI_TRANSITIONS=276} [2024-06-28 01:44:25,348 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 01:44:25,348 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 276 transitions, 3484 flow [2024-06-28 01:44:25,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:25,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:25,348 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 01:44:25,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 01:44:25,348 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 01:44:25,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:25,349 INFO L85 PathProgramCache]: Analyzing trace with hash 202287713, now seen corresponding path program 9 times [2024-06-28 01:44:25,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:25,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660852867] [2024-06-28 01:44:25,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:25,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:25,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:25,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660852867] [2024-06-28 01:44:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660852867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:25,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:25,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:25,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688949072] [2024-06-28 01:44:25,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:26,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:26,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 276 transitions, 3484 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:26,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:26,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:26,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:26,708 INFO L124 PetriNetUnfolderBase]: 1465/2593 cut-off events. [2024-06-28 01:44:26,708 INFO L125 PetriNetUnfolderBase]: For 77714/77714 co-relation queries the response was YES. [2024-06-28 01:44:26,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15806 conditions, 2593 events. 1465/2593 cut-off events. For 77714/77714 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 15165 event pairs, 370 based on Foata normal form. 2/2486 useless extension candidates. Maximal degree in co-relation 15687. Up to 1808 conditions per place. [2024-06-28 01:44:26,735 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 212 selfloop transitions, 87 changer transitions 0/306 dead transitions. [2024-06-28 01:44:26,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 306 transitions, 4504 flow [2024-06-28 01:44:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:26,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-28 01:44:26,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-28 01:44:26,736 INFO L175 Difference]: Start difference. First operand has 250 places, 276 transitions, 3484 flow. Second operand 9 states and 148 transitions. [2024-06-28 01:44:26,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 306 transitions, 4504 flow [2024-06-28 01:44:27,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 306 transitions, 4297 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:27,018 INFO L231 Difference]: Finished difference. Result has 252 places, 280 transitions, 3596 flow [2024-06-28 01:44:27,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3596, PETRI_PLACES=252, PETRI_TRANSITIONS=280} [2024-06-28 01:44:27,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-28 01:44:27,018 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 280 transitions, 3596 flow [2024-06-28 01:44:27,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:27,019 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 01:44:27,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 01:44:27,019 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 01:44:27,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:27,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1146188681, now seen corresponding path program 10 times [2024-06-28 01:44:27,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:27,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501492465] [2024-06-28 01:44:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:27,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:27,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:27,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:27,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501492465] [2024-06-28 01:44:27,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501492465] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:27,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:27,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:27,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477402905] [2024-06-28 01:44:27,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:27,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:27,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:27,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:27,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:27,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:27,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 280 transitions, 3596 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:27,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:27,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:27,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:28,242 INFO L124 PetriNetUnfolderBase]: 1481/2621 cut-off events. [2024-06-28 01:44:28,242 INFO L125 PetriNetUnfolderBase]: For 80426/80426 co-relation queries the response was YES. [2024-06-28 01:44:28,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16067 conditions, 2621 events. 1481/2621 cut-off events. For 80426/80426 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 15379 event pairs, 374 based on Foata normal form. 2/2509 useless extension candidates. Maximal degree in co-relation 15947. Up to 2043 conditions per place. [2024-06-28 01:44:28,269 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 214 selfloop transitions, 84 changer transitions 0/305 dead transitions. [2024-06-28 01:44:28,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 305 transitions, 4394 flow [2024-06-28 01:44:28,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:28,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:28,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-28 01:44:28,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-28 01:44:28,270 INFO L175 Difference]: Start difference. First operand has 252 places, 280 transitions, 3596 flow. Second operand 9 states and 146 transitions. [2024-06-28 01:44:28,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 305 transitions, 4394 flow [2024-06-28 01:44:28,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 305 transitions, 4128 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:28,578 INFO L231 Difference]: Finished difference. Result has 254 places, 282 transitions, 3579 flow [2024-06-28 01:44:28,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3579, PETRI_PLACES=254, PETRI_TRANSITIONS=282} [2024-06-28 01:44:28,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 213 predicate places. [2024-06-28 01:44:28,580 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 282 transitions, 3579 flow [2024-06-28 01:44:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:28,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:28,580 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 01:44:28,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 01:44:28,580 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 01:44:28,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:28,581 INFO L85 PathProgramCache]: Analyzing trace with hash -88073081, now seen corresponding path program 11 times [2024-06-28 01:44:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:28,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736426610] [2024-06-28 01:44:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:29,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:29,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:29,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736426610] [2024-06-28 01:44:29,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736426610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:29,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:29,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422376481] [2024-06-28 01:44:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:29,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:29,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:29,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:29,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:29,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 282 transitions, 3579 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:29,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:29,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:29,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:30,023 INFO L124 PetriNetUnfolderBase]: 1497/2650 cut-off events. [2024-06-28 01:44:30,024 INFO L125 PetriNetUnfolderBase]: For 80362/80362 co-relation queries the response was YES. [2024-06-28 01:44:30,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16101 conditions, 2650 events. 1497/2650 cut-off events. For 80362/80362 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15564 event pairs, 392 based on Foata normal form. 2/2537 useless extension candidates. Maximal degree in co-relation 15981. Up to 2060 conditions per place. [2024-06-28 01:44:30,048 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 225 selfloop transitions, 75 changer transitions 0/307 dead transitions. [2024-06-28 01:44:30,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 307 transitions, 4507 flow [2024-06-28 01:44:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:30,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-28 01:44:30,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:44:30,050 INFO L175 Difference]: Start difference. First operand has 254 places, 282 transitions, 3579 flow. Second operand 9 states and 147 transitions. [2024-06-28 01:44:30,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 307 transitions, 4507 flow [2024-06-28 01:44:30,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 307 transitions, 4279 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:30,342 INFO L231 Difference]: Finished difference. Result has 255 places, 284 transitions, 3564 flow [2024-06-28 01:44:30,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3351, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3564, PETRI_PLACES=255, PETRI_TRANSITIONS=284} [2024-06-28 01:44:30,343 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-28 01:44:30,343 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 284 transitions, 3564 flow [2024-06-28 01:44:30,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:30,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:30,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:30,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 01:44:30,344 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 01:44:30,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 481421804, now seen corresponding path program 1 times [2024-06-28 01:44:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298863127] [2024-06-28 01:44:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:31,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:31,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298863127] [2024-06-28 01:44:31,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298863127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:31,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:31,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:31,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653515695] [2024-06-28 01:44:31,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:31,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:31,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:31,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:31,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:31,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 284 transitions, 3564 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:31,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:31,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:31,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:31,959 INFO L124 PetriNetUnfolderBase]: 1577/2804 cut-off events. [2024-06-28 01:44:31,960 INFO L125 PetriNetUnfolderBase]: For 111451/111451 co-relation queries the response was YES. [2024-06-28 01:44:31,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 2804 events. 1577/2804 cut-off events. For 111451/111451 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 16735 event pairs, 416 based on Foata normal form. 14/2700 useless extension candidates. Maximal degree in co-relation 16680. Up to 1974 conditions per place. [2024-06-28 01:44:31,989 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 197 selfloop transitions, 113 changer transitions 0/317 dead transitions. [2024-06-28 01:44:31,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 317 transitions, 4426 flow [2024-06-28 01:44:31,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:31,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:44:31,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:44:31,991 INFO L175 Difference]: Start difference. First operand has 255 places, 284 transitions, 3564 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:44:31,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 317 transitions, 4426 flow [2024-06-28 01:44:32,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 317 transitions, 4202 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:32,287 INFO L231 Difference]: Finished difference. Result has 260 places, 286 transitions, 3655 flow [2024-06-28 01:44:32,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3655, PETRI_PLACES=260, PETRI_TRANSITIONS=286} [2024-06-28 01:44:32,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:44:32,288 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 286 transitions, 3655 flow [2024-06-28 01:44:32,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:32,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:32,288 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 01:44:32,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 01:44:32,289 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 01:44:32,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash 167445527, now seen corresponding path program 12 times [2024-06-28 01:44:32,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:32,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928409869] [2024-06-28 01:44:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:32,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:33,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:33,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928409869] [2024-06-28 01:44:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928409869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:33,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:33,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014775079] [2024-06-28 01:44:33,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:33,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:33,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:33,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:33,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:33,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 286 transitions, 3655 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:33,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:33,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:33,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:33,879 INFO L124 PetriNetUnfolderBase]: 1593/2833 cut-off events. [2024-06-28 01:44:33,879 INFO L125 PetriNetUnfolderBase]: For 84788/84788 co-relation queries the response was YES. [2024-06-28 01:44:33,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17146 conditions, 2833 events. 1593/2833 cut-off events. For 84788/84788 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17005 event pairs, 428 based on Foata normal form. 2/2716 useless extension candidates. Maximal degree in co-relation 17023. Up to 2311 conditions per place. [2024-06-28 01:44:33,915 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 218 selfloop transitions, 86 changer transitions 0/311 dead transitions. [2024-06-28 01:44:33,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 311 transitions, 4447 flow [2024-06-28 01:44:33,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:33,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-28 01:44:33,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-28 01:44:33,917 INFO L175 Difference]: Start difference. First operand has 260 places, 286 transitions, 3655 flow. Second operand 10 states and 155 transitions. [2024-06-28 01:44:33,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 311 transitions, 4447 flow [2024-06-28 01:44:34,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 311 transitions, 4145 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 01:44:34,261 INFO L231 Difference]: Finished difference. Result has 260 places, 288 transitions, 3592 flow [2024-06-28 01:44:34,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3592, PETRI_PLACES=260, PETRI_TRANSITIONS=288} [2024-06-28 01:44:34,262 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-28 01:44:34,262 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 288 transitions, 3592 flow [2024-06-28 01:44:34,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:34,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:34,262 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 01:44:34,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 01:44:34,262 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 01:44:34,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash -88067501, now seen corresponding path program 13 times [2024-06-28 01:44:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724475187] [2024-06-28 01:44:34,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:34,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:34,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:34,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724475187] [2024-06-28 01:44:34,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724475187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148760368] [2024-06-28 01:44:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:34,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:34,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:35,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:35,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 288 transitions, 3592 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:35,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:35,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:35,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:35,693 INFO L124 PetriNetUnfolderBase]: 1609/2862 cut-off events. [2024-06-28 01:44:35,693 INFO L125 PetriNetUnfolderBase]: For 81763/81763 co-relation queries the response was YES. [2024-06-28 01:44:35,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16883 conditions, 2862 events. 1609/2862 cut-off events. For 81763/81763 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17230 event pairs, 442 based on Foata normal form. 2/2744 useless extension candidates. Maximal degree in co-relation 16759. Up to 2339 conditions per place. [2024-06-28 01:44:35,725 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 232 selfloop transitions, 71 changer transitions 0/310 dead transitions. [2024-06-28 01:44:35,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 310 transitions, 4370 flow [2024-06-28 01:44:35,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:35,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:35,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-28 01:44:35,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264264264264264 [2024-06-28 01:44:35,726 INFO L175 Difference]: Start difference. First operand has 260 places, 288 transitions, 3592 flow. Second operand 9 states and 142 transitions. [2024-06-28 01:44:35,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 310 transitions, 4370 flow [2024-06-28 01:44:36,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 310 transitions, 4151 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:36,046 INFO L231 Difference]: Finished difference. Result has 261 places, 290 transitions, 3586 flow [2024-06-28 01:44:36,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3586, PETRI_PLACES=261, PETRI_TRANSITIONS=290} [2024-06-28 01:44:36,046 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-28 01:44:36,046 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 290 transitions, 3586 flow [2024-06-28 01:44:36,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:36,047 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 01:44:36,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 01:44:36,047 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 01:44:36,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:36,047 INFO L85 PathProgramCache]: Analyzing trace with hash -87857755, now seen corresponding path program 1 times [2024-06-28 01:44:36,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:36,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503923096] [2024-06-28 01:44:36,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:36,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:36,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:36,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503923096] [2024-06-28 01:44:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503923096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:36,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:36,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 01:44:36,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183699316] [2024-06-28 01:44:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:36,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 01:44:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:36,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 01:44:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 01:44:36,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:36,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 290 transitions, 3586 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:36,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:36,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:36,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:37,363 INFO L124 PetriNetUnfolderBase]: 1605/2856 cut-off events. [2024-06-28 01:44:37,364 INFO L125 PetriNetUnfolderBase]: For 77295/77295 co-relation queries the response was YES. [2024-06-28 01:44:37,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16592 conditions, 2856 events. 1605/2856 cut-off events. For 77295/77295 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 17191 event pairs, 442 based on Foata normal form. 2/2737 useless extension candidates. Maximal degree in co-relation 16467. Up to 2160 conditions per place. [2024-06-28 01:44:37,391 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 210 selfloop transitions, 92 changer transitions 0/309 dead transitions. [2024-06-28 01:44:37,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 309 transitions, 4288 flow [2024-06-28 01:44:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:37,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-28 01:44:37,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43543543543543545 [2024-06-28 01:44:37,392 INFO L175 Difference]: Start difference. First operand has 261 places, 290 transitions, 3586 flow. Second operand 9 states and 145 transitions. [2024-06-28 01:44:37,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 309 transitions, 4288 flow [2024-06-28 01:44:37,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 309 transitions, 4089 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 01:44:37,700 INFO L231 Difference]: Finished difference. Result has 263 places, 290 transitions, 3581 flow [2024-06-28 01:44:37,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3387, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3581, PETRI_PLACES=263, PETRI_TRANSITIONS=290} [2024-06-28 01:44:37,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-28 01:44:37,701 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 290 transitions, 3581 flow [2024-06-28 01:44:37,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:37,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:37,701 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 01:44:37,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 01:44:37,701 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 01:44:37,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:37,701 INFO L85 PathProgramCache]: Analyzing trace with hash 492463694, now seen corresponding path program 2 times [2024-06-28 01:44:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:37,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850300113] [2024-06-28 01:44:37,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:37,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:38,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:38,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:38,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850300113] [2024-06-28 01:44:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850300113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:38,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:38,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:38,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394582074] [2024-06-28 01:44:38,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:38,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:38,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:38,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:38,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:38,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 290 transitions, 3581 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:38,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:38,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:38,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:39,223 INFO L124 PetriNetUnfolderBase]: 1621/2889 cut-off events. [2024-06-28 01:44:39,224 INFO L125 PetriNetUnfolderBase]: For 79514/79514 co-relation queries the response was YES. [2024-06-28 01:44:39,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16841 conditions, 2889 events. 1621/2889 cut-off events. For 79514/79514 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 17494 event pairs, 485 based on Foata normal form. 2/2773 useless extension candidates. Maximal degree in co-relation 16715. Up to 2592 conditions per place. [2024-06-28 01:44:39,255 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 265 selfloop transitions, 45 changer transitions 0/317 dead transitions. [2024-06-28 01:44:39,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 317 transitions, 4432 flow [2024-06-28 01:44:39,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:39,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 173 transitions. [2024-06-28 01:44:39,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38963963963963966 [2024-06-28 01:44:39,257 INFO L175 Difference]: Start difference. First operand has 263 places, 290 transitions, 3581 flow. Second operand 12 states and 173 transitions. [2024-06-28 01:44:39,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 317 transitions, 4432 flow [2024-06-28 01:44:39,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 317 transitions, 4225 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:39,586 INFO L231 Difference]: Finished difference. Result has 268 places, 294 transitions, 3581 flow [2024-06-28 01:44:39,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3374, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3581, PETRI_PLACES=268, PETRI_TRANSITIONS=294} [2024-06-28 01:44:39,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 01:44:39,586 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 294 transitions, 3581 flow [2024-06-28 01:44:39,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:39,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:39,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:39,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 01:44:39,587 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 01:44:39,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:39,587 INFO L85 PathProgramCache]: Analyzing trace with hash 811458855, now seen corresponding path program 14 times [2024-06-28 01:44:39,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:39,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317336953] [2024-06-28 01:44:39,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:40,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:40,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317336953] [2024-06-28 01:44:40,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317336953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:40,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:40,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:40,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614783000] [2024-06-28 01:44:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:40,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:40,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:40,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:40,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:40,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 294 transitions, 3581 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:40,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:40,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:40,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:40,950 INFO L124 PetriNetUnfolderBase]: 1618/2880 cut-off events. [2024-06-28 01:44:40,950 INFO L125 PetriNetUnfolderBase]: For 73714/73714 co-relation queries the response was YES. [2024-06-28 01:44:40,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16520 conditions, 2880 events. 1618/2880 cut-off events. For 73714/73714 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 17384 event pairs, 443 based on Foata normal form. 2/2762 useless extension candidates. Maximal degree in co-relation 16392. Up to 2356 conditions per place. [2024-06-28 01:44:40,984 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 70 changer transitions 0/315 dead transitions. [2024-06-28 01:44:40,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 315 transitions, 4311 flow [2024-06-28 01:44:40,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:44:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:44:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-28 01:44:40,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-28 01:44:40,986 INFO L175 Difference]: Start difference. First operand has 268 places, 294 transitions, 3581 flow. Second operand 9 states and 143 transitions. [2024-06-28 01:44:40,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 315 transitions, 4311 flow [2024-06-28 01:44:41,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 315 transitions, 4109 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:41,346 INFO L231 Difference]: Finished difference. Result has 268 places, 294 transitions, 3524 flow [2024-06-28 01:44:41,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3379, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3524, PETRI_PLACES=268, PETRI_TRANSITIONS=294} [2024-06-28 01:44:41,347 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-28 01:44:41,347 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 294 transitions, 3524 flow [2024-06-28 01:44:41,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:41,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:41,348 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 01:44:41,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 01:44:41,348 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 01:44:41,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:41,348 INFO L85 PathProgramCache]: Analyzing trace with hash -756228773, now seen corresponding path program 2 times [2024-06-28 01:44:41,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494836154] [2024-06-28 01:44:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494836154] [2024-06-28 01:44:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494836154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:42,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:42,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:42,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042999940] [2024-06-28 01:44:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:42,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:42,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:42,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:42,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:42,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:42,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 294 transitions, 3524 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:42,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:42,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:42,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:42,745 INFO L124 PetriNetUnfolderBase]: 1631/2899 cut-off events. [2024-06-28 01:44:42,745 INFO L125 PetriNetUnfolderBase]: For 73572/73572 co-relation queries the response was YES. [2024-06-28 01:44:42,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16485 conditions, 2899 events. 1631/2899 cut-off events. For 73572/73572 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17474 event pairs, 424 based on Foata normal form. 2/2777 useless extension candidates. Maximal degree in co-relation 16356. Up to 2052 conditions per place. [2024-06-28 01:44:42,779 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 196 selfloop transitions, 119 changer transitions 0/322 dead transitions. [2024-06-28 01:44:42,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 322 transitions, 4466 flow [2024-06-28 01:44:42,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:42,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:42,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:44:42,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:44:42,781 INFO L175 Difference]: Start difference. First operand has 268 places, 294 transitions, 3524 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:44:42,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 322 transitions, 4466 flow [2024-06-28 01:44:43,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 322 transitions, 4304 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:43,158 INFO L231 Difference]: Finished difference. Result has 271 places, 296 transitions, 3631 flow [2024-06-28 01:44:43,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3362, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3631, PETRI_PLACES=271, PETRI_TRANSITIONS=296} [2024-06-28 01:44:43,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-28 01:44:43,159 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 296 transitions, 3631 flow [2024-06-28 01:44:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:43,159 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 01:44:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 01:44:43,160 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 01:44:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1061076931, now seen corresponding path program 3 times [2024-06-28 01:44:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260779124] [2024-06-28 01:44:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:43,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:43,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:43,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260779124] [2024-06-28 01:44:43,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260779124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:43,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:43,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:43,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348974128] [2024-06-28 01:44:43,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:43,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:43,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:43,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:43,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:44,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:44,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 296 transitions, 3631 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:44,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:44,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:44,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:44,817 INFO L124 PetriNetUnfolderBase]: 1627/2892 cut-off events. [2024-06-28 01:44:44,817 INFO L125 PetriNetUnfolderBase]: For 68993/68993 co-relation queries the response was YES. [2024-06-28 01:44:44,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16496 conditions, 2892 events. 1627/2892 cut-off events. For 68993/68993 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 17443 event pairs, 435 based on Foata normal form. 2/2770 useless extension candidates. Maximal degree in co-relation 16366. Up to 2049 conditions per place. [2024-06-28 01:44:44,847 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 200 selfloop transitions, 114 changer transitions 0/321 dead transitions. [2024-06-28 01:44:44,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 321 transitions, 4389 flow [2024-06-28 01:44:44,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:44,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:44:44,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:44:44,848 INFO L175 Difference]: Start difference. First operand has 271 places, 296 transitions, 3631 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:44:44,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 321 transitions, 4389 flow [2024-06-28 01:44:45,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 321 transitions, 4135 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:45,189 INFO L231 Difference]: Finished difference. Result has 273 places, 296 transitions, 3610 flow [2024-06-28 01:44:45,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3377, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3610, PETRI_PLACES=273, PETRI_TRANSITIONS=296} [2024-06-28 01:44:45,190 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-28 01:44:45,190 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 296 transitions, 3610 flow [2024-06-28 01:44:45,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:45,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:45,191 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 01:44:45,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 01:44:45,191 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 01:44:45,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:45,191 INFO L85 PathProgramCache]: Analyzing trace with hash 492849644, now seen corresponding path program 3 times [2024-06-28 01:44:45,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:45,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602631551] [2024-06-28 01:44:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:45,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:46,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602631551] [2024-06-28 01:44:46,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602631551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:46,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:46,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869691361] [2024-06-28 01:44:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:46,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:46,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:46,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 296 transitions, 3610 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:46,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:46,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:46,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:46,758 INFO L124 PetriNetUnfolderBase]: 1643/2925 cut-off events. [2024-06-28 01:44:46,758 INFO L125 PetriNetUnfolderBase]: For 71630/71630 co-relation queries the response was YES. [2024-06-28 01:44:46,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 2925 events. 1643/2925 cut-off events. For 71630/71630 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17737 event pairs, 464 based on Foata normal form. 2/2806 useless extension candidates. Maximal degree in co-relation 16599. Up to 2566 conditions per place. [2024-06-28 01:44:46,790 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 49 changer transitions 0/325 dead transitions. [2024-06-28 01:44:46,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 325 transitions, 4490 flow [2024-06-28 01:44:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:44:46,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:44:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-28 01:44:46,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39864864864864863 [2024-06-28 01:44:46,792 INFO L175 Difference]: Start difference. First operand has 273 places, 296 transitions, 3610 flow. Second operand 12 states and 177 transitions. [2024-06-28 01:44:46,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 325 transitions, 4490 flow [2024-06-28 01:44:47,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 325 transitions, 4232 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 01:44:47,181 INFO L231 Difference]: Finished difference. Result has 275 places, 299 transitions, 3561 flow [2024-06-28 01:44:47,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3561, PETRI_PLACES=275, PETRI_TRANSITIONS=299} [2024-06-28 01:44:47,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-28 01:44:47,182 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 299 transitions, 3561 flow [2024-06-28 01:44:47,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:47,182 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 01:44:47,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 01:44:47,183 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:44:47,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:47,183 INFO L85 PathProgramCache]: Analyzing trace with hash -80438804, now seen corresponding path program 4 times [2024-06-28 01:44:47,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:47,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338897386] [2024-06-28 01:44:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:47,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:47,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:47,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338897386] [2024-06-28 01:44:47,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338897386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:47,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:47,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:44:47,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517314031] [2024-06-28 01:44:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:47,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:44:47,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:44:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:44:47,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:47,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 299 transitions, 3561 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:47,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:47,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:47,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:48,543 INFO L124 PetriNetUnfolderBase]: 1659/2954 cut-off events. [2024-06-28 01:44:48,544 INFO L125 PetriNetUnfolderBase]: For 74736/74736 co-relation queries the response was YES. [2024-06-28 01:44:48,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16854 conditions, 2954 events. 1659/2954 cut-off events. For 74736/74736 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17975 event pairs, 498 based on Foata normal form. 2/2835 useless extension candidates. Maximal degree in co-relation 16721. Up to 2689 conditions per place. [2024-06-28 01:44:48,575 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 277 selfloop transitions, 36 changer transitions 0/320 dead transitions. [2024-06-28 01:44:48,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 320 transitions, 4379 flow [2024-06-28 01:44:48,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-28 01:44:48,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 01:44:48,577 INFO L175 Difference]: Start difference. First operand has 275 places, 299 transitions, 3561 flow. Second operand 10 states and 148 transitions. [2024-06-28 01:44:48,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 320 transitions, 4379 flow [2024-06-28 01:44:48,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 320 transitions, 4208 flow, removed 43 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:48,919 INFO L231 Difference]: Finished difference. Result has 276 places, 301 transitions, 3553 flow [2024-06-28 01:44:48,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3553, PETRI_PLACES=276, PETRI_TRANSITIONS=301} [2024-06-28 01:44:48,920 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-28 01:44:48,920 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 301 transitions, 3553 flow [2024-06-28 01:44:48,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:48,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:48,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:48,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 01:44:48,921 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 01:44:48,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 167722574, now seen corresponding path program 5 times [2024-06-28 01:44:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:48,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854179548] [2024-06-28 01:44:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:48,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:49,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:49,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854179548] [2024-06-28 01:44:49,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854179548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:49,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:49,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:49,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932602852] [2024-06-28 01:44:49,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:49,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:49,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:49,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:49,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:49,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 301 transitions, 3553 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:49,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:49,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:49,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:50,328 INFO L124 PetriNetUnfolderBase]: 1656/2949 cut-off events. [2024-06-28 01:44:50,329 INFO L125 PetriNetUnfolderBase]: For 68894/68894 co-relation queries the response was YES. [2024-06-28 01:44:50,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16441 conditions, 2949 events. 1656/2949 cut-off events. For 68894/68894 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17935 event pairs, 497 based on Foata normal form. 2/2830 useless extension candidates. Maximal degree in co-relation 16307. Up to 2684 conditions per place. [2024-06-28 01:44:50,361 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 279 selfloop transitions, 38 changer transitions 0/324 dead transitions. [2024-06-28 01:44:50,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 324 transitions, 4395 flow [2024-06-28 01:44:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:44:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:44:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-28 01:44:50,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-28 01:44:50,363 INFO L175 Difference]: Start difference. First operand has 276 places, 301 transitions, 3553 flow. Second operand 11 states and 161 transitions. [2024-06-28 01:44:50,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 324 transitions, 4395 flow [2024-06-28 01:44:50,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 324 transitions, 4248 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:50,707 INFO L231 Difference]: Finished difference. Result has 279 places, 303 transitions, 3577 flow [2024-06-28 01:44:50,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3577, PETRI_PLACES=279, PETRI_TRANSITIONS=303} [2024-06-28 01:44:50,708 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-28 01:44:50,708 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 303 transitions, 3577 flow [2024-06-28 01:44:50,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:50,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:50,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:50,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 01:44:50,708 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 01:44:50,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:50,709 INFO L85 PathProgramCache]: Analyzing trace with hash -335595332, now seen corresponding path program 1 times [2024-06-28 01:44:50,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:50,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253759168] [2024-06-28 01:44:50,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:50,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:51,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:51,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:51,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253759168] [2024-06-28 01:44:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253759168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:51,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:51,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606642602] [2024-06-28 01:44:51,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:51,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:51,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:51,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:51,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:51,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:51,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 303 transitions, 3577 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:51,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:51,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:51,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:52,177 INFO L124 PetriNetUnfolderBase]: 1672/2973 cut-off events. [2024-06-28 01:44:52,178 INFO L125 PetriNetUnfolderBase]: For 69396/69396 co-relation queries the response was YES. [2024-06-28 01:44:52,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16457 conditions, 2973 events. 1672/2973 cut-off events. For 69396/69396 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 18075 event pairs, 335 based on Foata normal form. 2/2870 useless extension candidates. Maximal degree in co-relation 16322. Up to 2339 conditions per place. [2024-06-28 01:44:52,210 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 255 selfloop transitions, 75 changer transitions 0/337 dead transitions. [2024-06-28 01:44:52,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 337 transitions, 4487 flow [2024-06-28 01:44:52,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:52,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-28 01:44:52,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-28 01:44:52,211 INFO L175 Difference]: Start difference. First operand has 279 places, 303 transitions, 3577 flow. Second operand 10 states and 156 transitions. [2024-06-28 01:44:52,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 337 transitions, 4487 flow [2024-06-28 01:44:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 337 transitions, 4332 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:44:52,587 INFO L231 Difference]: Finished difference. Result has 280 places, 305 transitions, 3647 flow [2024-06-28 01:44:52,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3647, PETRI_PLACES=280, PETRI_TRANSITIONS=305} [2024-06-28 01:44:52,588 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 239 predicate places. [2024-06-28 01:44:52,588 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 305 transitions, 3647 flow [2024-06-28 01:44:52,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:52,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:52,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:52,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 01:44:52,589 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 01:44:52,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:52,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1492976248, now seen corresponding path program 2 times [2024-06-28 01:44:52,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:52,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454133883] [2024-06-28 01:44:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:52,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:53,251 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 01:44:53,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:53,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454133883] [2024-06-28 01:44:53,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454133883] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:53,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:53,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:53,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54317814] [2024-06-28 01:44:53,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:53,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:53,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:53,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:53,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:53,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 305 transitions, 3647 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:53,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:53,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:53,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:54,094 INFO L124 PetriNetUnfolderBase]: 1707/3037 cut-off events. [2024-06-28 01:44:54,095 INFO L125 PetriNetUnfolderBase]: For 78857/78857 co-relation queries the response was YES. [2024-06-28 01:44:54,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17031 conditions, 3037 events. 1707/3037 cut-off events. For 78857/78857 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18618 event pairs, 465 based on Foata normal form. 2/2919 useless extension candidates. Maximal degree in co-relation 16895. Up to 2459 conditions per place. [2024-06-28 01:44:54,126 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 274 selfloop transitions, 60 changer transitions 0/341 dead transitions. [2024-06-28 01:44:54,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 341 transitions, 4803 flow [2024-06-28 01:44:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:54,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:44:54,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:44:54,127 INFO L175 Difference]: Start difference. First operand has 280 places, 305 transitions, 3647 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:44:54,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 341 transitions, 4803 flow [2024-06-28 01:44:54,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 341 transitions, 4594 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:54,583 INFO L231 Difference]: Finished difference. Result has 282 places, 309 transitions, 3707 flow [2024-06-28 01:44:54,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3438, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3707, PETRI_PLACES=282, PETRI_TRANSITIONS=309} [2024-06-28 01:44:54,584 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-28 01:44:54,584 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 309 transitions, 3707 flow [2024-06-28 01:44:54,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:54,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:54,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 01:44:54,585 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 01:44:54,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:54,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1497444898, now seen corresponding path program 3 times [2024-06-28 01:44:54,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:54,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857181679] [2024-06-28 01:44:54,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:54,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857181679] [2024-06-28 01:44:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857181679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888881273] [2024-06-28 01:44:55,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:55,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:55,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:55,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:55,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:55,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:55,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 309 transitions, 3707 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:55,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:55,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:55,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:56,058 INFO L124 PetriNetUnfolderBase]: 1723/3066 cut-off events. [2024-06-28 01:44:56,058 INFO L125 PetriNetUnfolderBase]: For 80740/80740 co-relation queries the response was YES. [2024-06-28 01:44:56,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17121 conditions, 3066 events. 1723/3066 cut-off events. For 80740/80740 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18838 event pairs, 464 based on Foata normal form. 2/2947 useless extension candidates. Maximal degree in co-relation 16984. Up to 2585 conditions per place. [2024-06-28 01:44:56,094 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 272 selfloop transitions, 62 changer transitions 0/341 dead transitions. [2024-06-28 01:44:56,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 341 transitions, 4783 flow [2024-06-28 01:44:56,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:56,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:44:56,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:44:56,096 INFO L175 Difference]: Start difference. First operand has 282 places, 309 transitions, 3707 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:44:56,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 341 transitions, 4783 flow [2024-06-28 01:44:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 341 transitions, 4619 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-28 01:44:56,579 INFO L231 Difference]: Finished difference. Result has 286 places, 311 transitions, 3746 flow [2024-06-28 01:44:56,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3746, PETRI_PLACES=286, PETRI_TRANSITIONS=311} [2024-06-28 01:44:56,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-28 01:44:56,580 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 311 transitions, 3746 flow [2024-06-28 01:44:56,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:56,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:56,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:56,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 01:44:56,581 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 01:44:56,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1497624388, now seen corresponding path program 4 times [2024-06-28 01:44:56,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:56,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139947007] [2024-06-28 01:44:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:56,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:57,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:57,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139947007] [2024-06-28 01:44:57,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139947007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:57,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:57,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:57,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157258358] [2024-06-28 01:44:57,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:57,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:57,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:57,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:57,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:57,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 311 transitions, 3746 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:57,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:57,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:57,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:44:58,089 INFO L124 PetriNetUnfolderBase]: 1739/3094 cut-off events. [2024-06-28 01:44:58,090 INFO L125 PetriNetUnfolderBase]: For 81356/81356 co-relation queries the response was YES. [2024-06-28 01:44:58,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17306 conditions, 3094 events. 1739/3094 cut-off events. For 81356/81356 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 19029 event pairs, 494 based on Foata normal form. 2/2973 useless extension candidates. Maximal degree in co-relation 17167. Up to 2736 conditions per place. [2024-06-28 01:44:58,125 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 63 changer transitions 0/338 dead transitions. [2024-06-28 01:44:58,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 338 transitions, 4604 flow [2024-06-28 01:44:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:44:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:44:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-28 01:44:58,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-28 01:44:58,152 INFO L175 Difference]: Start difference. First operand has 286 places, 311 transitions, 3746 flow. Second operand 10 states and 149 transitions. [2024-06-28 01:44:58,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 338 transitions, 4604 flow [2024-06-28 01:44:58,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 338 transitions, 4417 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 01:44:58,579 INFO L231 Difference]: Finished difference. Result has 288 places, 313 transitions, 3759 flow [2024-06-28 01:44:58,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3563, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3759, PETRI_PLACES=288, PETRI_TRANSITIONS=313} [2024-06-28 01:44:58,579 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-28 01:44:58,579 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 313 transitions, 3759 flow [2024-06-28 01:44:58,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:58,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:44:58,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:44:58,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 01:44:58,580 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 01:44:58,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:44:58,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1497617878, now seen corresponding path program 5 times [2024-06-28 01:44:58,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:44:58,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861098038] [2024-06-28 01:44:58,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:44:58,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:44:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:44:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:44:59,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:44:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861098038] [2024-06-28 01:44:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861098038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:44:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:44:59,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:44:59,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556311233] [2024-06-28 01:44:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:44:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:44:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:44:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:44:59,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:44:59,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:44:59,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 313 transitions, 3759 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:44:59,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:44:59,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:44:59,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:00,217 INFO L124 PetriNetUnfolderBase]: 1736/3089 cut-off events. [2024-06-28 01:45:00,217 INFO L125 PetriNetUnfolderBase]: For 74508/74508 co-relation queries the response was YES. [2024-06-28 01:45:00,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17063 conditions, 3089 events. 1736/3089 cut-off events. For 74508/74508 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18998 event pairs, 483 based on Foata normal form. 2/2969 useless extension candidates. Maximal degree in co-relation 16923. Up to 2683 conditions per place. [2024-06-28 01:45:00,254 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 268 selfloop transitions, 65 changer transitions 0/340 dead transitions. [2024-06-28 01:45:00,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 340 transitions, 4573 flow [2024-06-28 01:45:00,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:00,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-28 01:45:00,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-28 01:45:00,256 INFO L175 Difference]: Start difference. First operand has 288 places, 313 transitions, 3759 flow. Second operand 10 states and 153 transitions. [2024-06-28 01:45:00,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 340 transitions, 4573 flow [2024-06-28 01:45:00,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 340 transitions, 4351 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:00,650 INFO L231 Difference]: Finished difference. Result has 290 places, 313 transitions, 3672 flow [2024-06-28 01:45:00,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3672, PETRI_PLACES=290, PETRI_TRANSITIONS=313} [2024-06-28 01:45:00,650 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-28 01:45:00,651 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 313 transitions, 3672 flow [2024-06-28 01:45:00,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:00,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:00,651 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 01:45:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 01:45:00,651 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 01:45:00,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:00,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1408261286, now seen corresponding path program 6 times [2024-06-28 01:45:00,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23480546] [2024-06-28 01:45:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:00,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:01,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:01,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:01,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23480546] [2024-06-28 01:45:01,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23480546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:01,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:01,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:01,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739068789] [2024-06-28 01:45:01,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:01,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:01,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:01,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:01,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 313 transitions, 3672 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:01,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:01,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:01,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:02,257 INFO L124 PetriNetUnfolderBase]: 1820/3247 cut-off events. [2024-06-28 01:45:02,258 INFO L125 PetriNetUnfolderBase]: For 118344/118344 co-relation queries the response was YES. [2024-06-28 01:45:02,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 3247 events. 1820/3247 cut-off events. For 118344/118344 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 20222 event pairs, 500 based on Foata normal form. 12/3133 useless extension candidates. Maximal degree in co-relation 17832. Up to 2248 conditions per place. [2024-06-28 01:45:02,297 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 216 selfloop transitions, 120 changer transitions 0/343 dead transitions. [2024-06-28 01:45:02,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 343 transitions, 4574 flow [2024-06-28 01:45:02,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:02,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:45:02,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:45:02,298 INFO L175 Difference]: Start difference. First operand has 290 places, 313 transitions, 3672 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:45:02,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 343 transitions, 4574 flow [2024-06-28 01:45:02,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 343 transitions, 4422 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:02,764 INFO L231 Difference]: Finished difference. Result has 291 places, 315 transitions, 3845 flow [2024-06-28 01:45:02,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3845, PETRI_PLACES=291, PETRI_TRANSITIONS=315} [2024-06-28 01:45:02,764 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-28 01:45:02,765 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 315 transitions, 3845 flow [2024-06-28 01:45:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:02,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:02,765 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 01:45:02,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 01:45:02,765 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 01:45:02,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1408568744, now seen corresponding path program 1 times [2024-06-28 01:45:02,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:02,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384958947] [2024-06-28 01:45:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:02,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:03,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:03,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384958947] [2024-06-28 01:45:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384958947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788825219] [2024-06-28 01:45:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:03,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:03,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:03,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:03,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:03,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:03,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 315 transitions, 3845 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:03,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:03,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:04,249 INFO L124 PetriNetUnfolderBase]: 1934/3466 cut-off events. [2024-06-28 01:45:04,250 INFO L125 PetriNetUnfolderBase]: For 145946/145946 co-relation queries the response was YES. [2024-06-28 01:45:04,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20293 conditions, 3466 events. 1934/3466 cut-off events. For 145946/145946 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 21985 event pairs, 514 based on Foata normal form. 8/3351 useless extension candidates. Maximal degree in co-relation 20151. Up to 2028 conditions per place. [2024-06-28 01:45:04,292 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 220 selfloop transitions, 126 changer transitions 0/353 dead transitions. [2024-06-28 01:45:04,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 353 transitions, 5056 flow [2024-06-28 01:45:04,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:04,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:04,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-28 01:45:04,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-28 01:45:04,294 INFO L175 Difference]: Start difference. First operand has 291 places, 315 transitions, 3845 flow. Second operand 11 states and 184 transitions. [2024-06-28 01:45:04,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 353 transitions, 5056 flow [2024-06-28 01:45:04,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 353 transitions, 4761 flow, removed 30 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:04,962 INFO L231 Difference]: Finished difference. Result has 294 places, 317 transitions, 3940 flow [2024-06-28 01:45:04,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3940, PETRI_PLACES=294, PETRI_TRANSITIONS=317} [2024-06-28 01:45:04,963 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-28 01:45:04,963 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 317 transitions, 3940 flow [2024-06-28 01:45:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:04,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:04,963 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 01:45:04,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 01:45:04,963 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 01:45:04,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1513220956, now seen corresponding path program 7 times [2024-06-28 01:45:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:04,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273156489] [2024-06-28 01:45:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:05,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:05,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273156489] [2024-06-28 01:45:05,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273156489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:05,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:05,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:05,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201904815] [2024-06-28 01:45:05,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:05,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:05,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:05,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:05,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 317 transitions, 3940 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:05,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:05,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:05,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:06,727 INFO L124 PetriNetUnfolderBase]: 1950/3496 cut-off events. [2024-06-28 01:45:06,727 INFO L125 PetriNetUnfolderBase]: For 121487/121487 co-relation queries the response was YES. [2024-06-28 01:45:06,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20240 conditions, 3496 events. 1950/3496 cut-off events. For 121487/121487 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 22279 event pairs, 570 based on Foata normal form. 2/3370 useless extension candidates. Maximal degree in co-relation 20097. Up to 2624 conditions per place. [2024-06-28 01:45:06,771 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 219 selfloop transitions, 117 changer transitions 0/343 dead transitions. [2024-06-28 01:45:06,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 343 transitions, 4822 flow [2024-06-28 01:45:06,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:45:06,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:45:06,773 INFO L175 Difference]: Start difference. First operand has 294 places, 317 transitions, 3940 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:45:06,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 343 transitions, 4822 flow [2024-06-28 01:45:07,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 343 transitions, 4581 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:07,447 INFO L231 Difference]: Finished difference. Result has 297 places, 319 transitions, 4022 flow [2024-06-28 01:45:07,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4022, PETRI_PLACES=297, PETRI_TRANSITIONS=319} [2024-06-28 01:45:07,448 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-28 01:45:07,448 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 319 transitions, 4022 flow [2024-06-28 01:45:07,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:07,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:07,448 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 01:45:07,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 01:45:07,448 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 01:45:07,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1188274588, now seen corresponding path program 8 times [2024-06-28 01:45:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:07,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20611218] [2024-06-28 01:45:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:08,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:08,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20611218] [2024-06-28 01:45:08,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20611218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:08,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:08,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083424044] [2024-06-28 01:45:08,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:08,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:08,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:08,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:08,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:08,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:08,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 319 transitions, 4022 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:08,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:08,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:08,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:08,935 INFO L124 PetriNetUnfolderBase]: 1966/3524 cut-off events. [2024-06-28 01:45:08,935 INFO L125 PetriNetUnfolderBase]: For 119892/119892 co-relation queries the response was YES. [2024-06-28 01:45:08,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20567 conditions, 3524 events. 1966/3524 cut-off events. For 119892/119892 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 22506 event pairs, 573 based on Foata normal form. 2/3401 useless extension candidates. Maximal degree in co-relation 20422. Up to 2460 conditions per place. [2024-06-28 01:45:08,977 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 222 selfloop transitions, 122 changer transitions 0/351 dead transitions. [2024-06-28 01:45:08,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 351 transitions, 4964 flow [2024-06-28 01:45:08,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:08,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-28 01:45:08,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-28 01:45:08,979 INFO L175 Difference]: Start difference. First operand has 297 places, 319 transitions, 4022 flow. Second operand 10 states and 169 transitions. [2024-06-28 01:45:08,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 351 transitions, 4964 flow [2024-06-28 01:45:09,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 351 transitions, 4667 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:09,588 INFO L231 Difference]: Finished difference. Result has 299 places, 321 transitions, 4060 flow [2024-06-28 01:45:09,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4060, PETRI_PLACES=299, PETRI_TRANSITIONS=321} [2024-06-28 01:45:09,589 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-28 01:45:09,589 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 321 transitions, 4060 flow [2024-06-28 01:45:09,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:09,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:09,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 01:45:09,589 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 01:45:09,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:09,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1285319806, now seen corresponding path program 9 times [2024-06-28 01:45:09,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143358400] [2024-06-28 01:45:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:10,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:10,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143358400] [2024-06-28 01:45:10,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143358400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:10,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:10,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:10,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938684271] [2024-06-28 01:45:10,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:10,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:10,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:10,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:10,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:10,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 321 transitions, 4060 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:10,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:10,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:10,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:11,308 INFO L124 PetriNetUnfolderBase]: 1982/3553 cut-off events. [2024-06-28 01:45:11,308 INFO L125 PetriNetUnfolderBase]: For 123172/123172 co-relation queries the response was YES. [2024-06-28 01:45:11,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20810 conditions, 3553 events. 1982/3553 cut-off events. For 123172/123172 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22759 event pairs, 585 based on Foata normal form. 2/3426 useless extension candidates. Maximal degree in co-relation 20664. Up to 2680 conditions per place. [2024-06-28 01:45:11,351 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 229 selfloop transitions, 111 changer transitions 0/347 dead transitions. [2024-06-28 01:45:11,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 347 transitions, 4948 flow [2024-06-28 01:45:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:11,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:11,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:45:11,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:45:11,353 INFO L175 Difference]: Start difference. First operand has 299 places, 321 transitions, 4060 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:45:11,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 347 transitions, 4948 flow [2024-06-28 01:45:12,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 347 transitions, 4629 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:12,133 INFO L231 Difference]: Finished difference. Result has 301 places, 323 transitions, 4050 flow [2024-06-28 01:45:12,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3741, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4050, PETRI_PLACES=301, PETRI_TRANSITIONS=323} [2024-06-28 01:45:12,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 260 predicate places. [2024-06-28 01:45:12,134 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 323 transitions, 4050 flow [2024-06-28 01:45:12,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:12,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:12,135 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 01:45:12,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 01:45:12,135 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 01:45:12,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1285313296, now seen corresponding path program 10 times [2024-06-28 01:45:12,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:12,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465388077] [2024-06-28 01:45:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:12,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:12,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465388077] [2024-06-28 01:45:12,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465388077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:12,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:12,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448414294] [2024-06-28 01:45:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:13,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:13,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 323 transitions, 4050 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:13,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:13,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:13,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:14,043 INFO L124 PetriNetUnfolderBase]: 1998/3581 cut-off events. [2024-06-28 01:45:14,044 INFO L125 PetriNetUnfolderBase]: For 125697/125697 co-relation queries the response was YES. [2024-06-28 01:45:14,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20931 conditions, 3581 events. 1998/3581 cut-off events. For 125697/125697 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 22978 event pairs, 585 based on Foata normal form. 2/3455 useless extension candidates. Maximal degree in co-relation 20784. Up to 2664 conditions per place. [2024-06-28 01:45:14,084 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 230 selfloop transitions, 114 changer transitions 0/351 dead transitions. [2024-06-28 01:45:14,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 351 transitions, 4972 flow [2024-06-28 01:45:14,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:14,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:14,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:45:14,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:45:14,086 INFO L175 Difference]: Start difference. First operand has 301 places, 323 transitions, 4050 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:45:14,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 351 transitions, 4972 flow [2024-06-28 01:45:14,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 351 transitions, 4681 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:14,668 INFO L231 Difference]: Finished difference. Result has 303 places, 325 transitions, 4084 flow [2024-06-28 01:45:14,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4084, PETRI_PLACES=303, PETRI_TRANSITIONS=325} [2024-06-28 01:45:14,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-28 01:45:14,669 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 325 transitions, 4084 flow [2024-06-28 01:45:14,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:14,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:14,669 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 01:45:14,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 01:45:14,670 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 01:45:14,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:14,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1285140316, now seen corresponding path program 11 times [2024-06-28 01:45:14,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:14,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722605268] [2024-06-28 01:45:14,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:14,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:15,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:15,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722605268] [2024-06-28 01:45:15,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722605268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:15,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:15,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046659705] [2024-06-28 01:45:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:15,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:15,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:15,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:15,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 325 transitions, 4084 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:15,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:15,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:15,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:16,315 INFO L124 PetriNetUnfolderBase]: 2014/3609 cut-off events. [2024-06-28 01:45:16,315 INFO L125 PetriNetUnfolderBase]: For 129225/129225 co-relation queries the response was YES. [2024-06-28 01:45:16,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21156 conditions, 3609 events. 2014/3609 cut-off events. For 129225/129225 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23200 event pairs, 591 based on Foata normal form. 2/3488 useless extension candidates. Maximal degree in co-relation 21008. Up to 2412 conditions per place. [2024-06-28 01:45:16,363 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 227 selfloop transitions, 125 changer transitions 0/359 dead transitions. [2024-06-28 01:45:16,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 359 transitions, 5068 flow [2024-06-28 01:45:16,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:45:16,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:45:16,364 INFO L175 Difference]: Start difference. First operand has 303 places, 325 transitions, 4084 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:45:16,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 359 transitions, 5068 flow [2024-06-28 01:45:17,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 359 transitions, 4759 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:17,126 INFO L231 Difference]: Finished difference. Result has 305 places, 327 transitions, 4126 flow [2024-06-28 01:45:17,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3775, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4126, PETRI_PLACES=305, PETRI_TRANSITIONS=327} [2024-06-28 01:45:17,126 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-28 01:45:17,127 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 327 transitions, 4126 flow [2024-06-28 01:45:17,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:17,127 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 01:45:17,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 01:45:17,127 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 01:45:17,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:17,128 INFO L85 PathProgramCache]: Analyzing trace with hash -598068388, now seen corresponding path program 12 times [2024-06-28 01:45:17,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:17,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548979505] [2024-06-28 01:45:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:17,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:17,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:17,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548979505] [2024-06-28 01:45:17,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548979505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:17,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:17,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:17,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573364591] [2024-06-28 01:45:17,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:17,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:17,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:17,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 327 transitions, 4126 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:17,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:17,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:17,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:18,722 INFO L124 PetriNetUnfolderBase]: 2011/3603 cut-off events. [2024-06-28 01:45:18,723 INFO L125 PetriNetUnfolderBase]: For 121844/121844 co-relation queries the response was YES. [2024-06-28 01:45:18,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20947 conditions, 3603 events. 2011/3603 cut-off events. For 121844/121844 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 23178 event pairs, 619 based on Foata normal form. 2/3476 useless extension candidates. Maximal degree in co-relation 20798. Up to 2731 conditions per place. [2024-06-28 01:45:18,766 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 230 selfloop transitions, 116 changer transitions 0/353 dead transitions. [2024-06-28 01:45:18,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 353 transitions, 5034 flow [2024-06-28 01:45:18,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:18,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:18,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-28 01:45:18,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-28 01:45:18,770 INFO L175 Difference]: Start difference. First operand has 305 places, 327 transitions, 4126 flow. Second operand 10 states and 158 transitions. [2024-06-28 01:45:18,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 353 transitions, 5034 flow [2024-06-28 01:45:19,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 353 transitions, 4699 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:19,390 INFO L231 Difference]: Finished difference. Result has 307 places, 329 transitions, 4118 flow [2024-06-28 01:45:19,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3791, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4118, PETRI_PLACES=307, PETRI_TRANSITIONS=329} [2024-06-28 01:45:19,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-28 01:45:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 329 transitions, 4118 flow [2024-06-28 01:45:19,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:19,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:19,391 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 01:45:19,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 01:45:19,391 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 01:45:19,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash -598074898, now seen corresponding path program 13 times [2024-06-28 01:45:19,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:19,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72282595] [2024-06-28 01:45:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:19,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:20,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:20,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72282595] [2024-06-28 01:45:20,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72282595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:20,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:20,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:20,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793626882] [2024-06-28 01:45:20,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:20,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:20,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:20,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:20,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 329 transitions, 4118 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:20,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:20,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:20,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:21,064 INFO L124 PetriNetUnfolderBase]: 2027/3632 cut-off events. [2024-06-28 01:45:21,064 INFO L125 PetriNetUnfolderBase]: For 124510/124510 co-relation queries the response was YES. [2024-06-28 01:45:21,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21058 conditions, 3632 events. 2027/3632 cut-off events. For 124510/124510 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 23406 event pairs, 611 based on Foata normal form. 2/3506 useless extension candidates. Maximal degree in co-relation 20908. Up to 2715 conditions per place. [2024-06-28 01:45:21,113 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 231 selfloop transitions, 119 changer transitions 0/357 dead transitions. [2024-06-28 01:45:21,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 357 transitions, 5062 flow [2024-06-28 01:45:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:21,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:45:21,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:45:21,115 INFO L175 Difference]: Start difference. First operand has 307 places, 329 transitions, 4118 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:45:21,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 357 transitions, 5062 flow [2024-06-28 01:45:21,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 357 transitions, 4753 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:21,837 INFO L231 Difference]: Finished difference. Result has 309 places, 331 transitions, 4154 flow [2024-06-28 01:45:21,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3809, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4154, PETRI_PLACES=309, PETRI_TRANSITIONS=331} [2024-06-28 01:45:21,838 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-28 01:45:21,838 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 331 transitions, 4154 flow [2024-06-28 01:45:21,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:21,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:21,838 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 01:45:21,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 01:45:21,839 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 01:45:21,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:21,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1980421908, now seen corresponding path program 14 times [2024-06-28 01:45:21,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:21,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356181520] [2024-06-28 01:45:21,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:21,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:21,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356181520] [2024-06-28 01:45:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356181520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:22,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:22,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745618471] [2024-06-28 01:45:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:22,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:22,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 331 transitions, 4154 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:22,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:22,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:22,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:23,382 INFO L124 PetriNetUnfolderBase]: 2043/3660 cut-off events. [2024-06-28 01:45:23,383 INFO L125 PetriNetUnfolderBase]: For 127926/127926 co-relation queries the response was YES. [2024-06-28 01:45:23,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21269 conditions, 3660 events. 2043/3660 cut-off events. For 127926/127926 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 23641 event pairs, 611 based on Foata normal form. 2/3535 useless extension candidates. Maximal degree in co-relation 21118. Up to 2673 conditions per place. [2024-06-28 01:45:23,432 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 231 selfloop transitions, 123 changer transitions 0/361 dead transitions. [2024-06-28 01:45:23,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 361 transitions, 5126 flow [2024-06-28 01:45:23,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-28 01:45:23,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-28 01:45:23,434 INFO L175 Difference]: Start difference. First operand has 309 places, 331 transitions, 4154 flow. Second operand 10 states and 166 transitions. [2024-06-28 01:45:23,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 361 transitions, 5126 flow [2024-06-28 01:45:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 361 transitions, 4797 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:24,239 INFO L231 Difference]: Finished difference. Result has 311 places, 333 transitions, 4182 flow [2024-06-28 01:45:24,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3825, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4182, PETRI_PLACES=311, PETRI_TRANSITIONS=333} [2024-06-28 01:45:24,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-28 01:45:24,240 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 333 transitions, 4182 flow [2024-06-28 01:45:24,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:24,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:24,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:24,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 01:45:24,240 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 01:45:24,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:24,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1235001160, now seen corresponding path program 15 times [2024-06-28 01:45:24,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:24,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557998487] [2024-06-28 01:45:24,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:24,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:24,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:24,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557998487] [2024-06-28 01:45:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557998487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:45:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059994473] [2024-06-28 01:45:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:45:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:45:24,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:45:24,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:25,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 333 transitions, 4182 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:25,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:25,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:25,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:25,937 INFO L124 PetriNetUnfolderBase]: 2143/3847 cut-off events. [2024-06-28 01:45:25,937 INFO L125 PetriNetUnfolderBase]: For 187255/187255 co-relation queries the response was YES. [2024-06-28 01:45:25,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23486 conditions, 3847 events. 2143/3847 cut-off events. For 187255/187255 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 25241 event pairs, 658 based on Foata normal form. 2/3735 useless extension candidates. Maximal degree in co-relation 23334. Up to 2025 conditions per place. [2024-06-28 01:45:25,980 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 214 selfloop transitions, 151 changer transitions 0/372 dead transitions. [2024-06-28 01:45:25,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 372 transitions, 5524 flow [2024-06-28 01:45:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:25,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:45:25,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:45:25,982 INFO L175 Difference]: Start difference. First operand has 311 places, 333 transitions, 4182 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:45:25,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 372 transitions, 5524 flow [2024-06-28 01:45:26,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 372 transitions, 5183 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:26,955 INFO L231 Difference]: Finished difference. Result has 313 places, 337 transitions, 4364 flow [2024-06-28 01:45:26,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3841, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4364, PETRI_PLACES=313, PETRI_TRANSITIONS=337} [2024-06-28 01:45:26,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-28 01:45:26,956 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 337 transitions, 4364 flow [2024-06-28 01:45:26,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:26,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:26,956 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 01:45:26,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 01:45:26,956 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 01:45:26,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:26,957 INFO L85 PathProgramCache]: Analyzing trace with hash 904126212, now seen corresponding path program 16 times [2024-06-28 01:45:26,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:26,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530526217] [2024-06-28 01:45:26,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:26,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:27,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:27,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:27,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530526217] [2024-06-28 01:45:27,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530526217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:27,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:27,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:27,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490469734] [2024-06-28 01:45:27,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:27,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:27,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:27,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:27,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:27,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:27,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 337 transitions, 4364 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:27,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:27,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:27,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:28,886 INFO L124 PetriNetUnfolderBase]: 2227/4008 cut-off events. [2024-06-28 01:45:28,886 INFO L125 PetriNetUnfolderBase]: For 248001/248001 co-relation queries the response was YES. [2024-06-28 01:45:28,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24717 conditions, 4008 events. 2227/4008 cut-off events. For 248001/248001 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 26537 event pairs, 683 based on Foata normal form. 12/3888 useless extension candidates. Maximal degree in co-relation 24564. Up to 2997 conditions per place. [2024-06-28 01:45:28,933 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 247 selfloop transitions, 116 changer transitions 0/370 dead transitions. [2024-06-28 01:45:28,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 370 transitions, 5372 flow [2024-06-28 01:45:28,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:28,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:28,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:45:28,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:45:28,934 INFO L175 Difference]: Start difference. First operand has 313 places, 337 transitions, 4364 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:45:28,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 370 transitions, 5372 flow [2024-06-28 01:45:30,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 370 transitions, 5090 flow, removed 61 selfloop flow, removed 6 redundant places. [2024-06-28 01:45:30,034 INFO L231 Difference]: Finished difference. Result has 318 places, 339 transitions, 4435 flow [2024-06-28 01:45:30,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4092, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4435, PETRI_PLACES=318, PETRI_TRANSITIONS=339} [2024-06-28 01:45:30,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-28 01:45:30,034 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 339 transitions, 4435 flow [2024-06-28 01:45:30,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:30,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:30,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 01:45:30,035 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 01:45:30,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:30,035 INFO L85 PathProgramCache]: Analyzing trace with hash 895852002, now seen corresponding path program 17 times [2024-06-28 01:45:30,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:30,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595204213] [2024-06-28 01:45:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:30,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:30,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:30,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595204213] [2024-06-28 01:45:30,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595204213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:30,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:30,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:30,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152148884] [2024-06-28 01:45:30,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:30,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:30,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:30,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:30,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:30,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:30,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 339 transitions, 4435 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:30,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:30,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:30,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:31,903 INFO L124 PetriNetUnfolderBase]: 2243/4036 cut-off events. [2024-06-28 01:45:31,903 INFO L125 PetriNetUnfolderBase]: For 200465/200465 co-relation queries the response was YES. [2024-06-28 01:45:31,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25038 conditions, 4036 events. 2243/4036 cut-off events. For 200465/200465 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 26744 event pairs, 690 based on Foata normal form. 2/3905 useless extension candidates. Maximal degree in co-relation 24883. Up to 3155 conditions per place. [2024-06-28 01:45:31,969 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 240 selfloop transitions, 121 changer transitions 0/368 dead transitions. [2024-06-28 01:45:31,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 368 transitions, 5407 flow [2024-06-28 01:45:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:31,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:31,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:45:31,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:45:31,970 INFO L175 Difference]: Start difference. First operand has 318 places, 339 transitions, 4435 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:45:31,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 368 transitions, 5407 flow [2024-06-28 01:45:33,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 368 transitions, 5098 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:33,431 INFO L231 Difference]: Finished difference. Result has 320 places, 341 transitions, 4481 flow [2024-06-28 01:45:33,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4126, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4481, PETRI_PLACES=320, PETRI_TRANSITIONS=341} [2024-06-28 01:45:33,444 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 279 predicate places. [2024-06-28 01:45:33,445 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 341 transitions, 4481 flow [2024-06-28 01:45:33,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:33,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:33,445 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 01:45:33,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 01:45:33,445 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 01:45:33,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:33,446 INFO L85 PathProgramCache]: Analyzing trace with hash 896091570, now seen corresponding path program 2 times [2024-06-28 01:45:33,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:33,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731250043] [2024-06-28 01:45:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:33,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:34,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:34,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:34,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731250043] [2024-06-28 01:45:34,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731250043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:34,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:34,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:34,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795186796] [2024-06-28 01:45:34,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:34,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:34,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:34,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:34,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:34,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:34,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 341 transitions, 4481 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:34,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:34,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:34,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:35,303 INFO L124 PetriNetUnfolderBase]: 2311/4167 cut-off events. [2024-06-28 01:45:35,304 INFO L125 PetriNetUnfolderBase]: For 243353/243353 co-relation queries the response was YES. [2024-06-28 01:45:35,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25512 conditions, 4167 events. 2311/4167 cut-off events. For 243353/243353 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 27853 event pairs, 716 based on Foata normal form. 10/4044 useless extension candidates. Maximal degree in co-relation 25356. Up to 3153 conditions per place. [2024-06-28 01:45:35,359 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 247 selfloop transitions, 122 changer transitions 0/376 dead transitions. [2024-06-28 01:45:35,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 376 transitions, 5487 flow [2024-06-28 01:45:35,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 01:45:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-28 01:45:35,361 INFO L175 Difference]: Start difference. First operand has 320 places, 341 transitions, 4481 flow. Second operand 12 states and 195 transitions. [2024-06-28 01:45:35,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 376 transitions, 5487 flow [2024-06-28 01:45:36,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 376 transitions, 5152 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:45:36,558 INFO L231 Difference]: Finished difference. Result has 323 places, 342 transitions, 4480 flow [2024-06-28 01:45:36,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4146, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4480, PETRI_PLACES=323, PETRI_TRANSITIONS=342} [2024-06-28 01:45:36,558 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 01:45:36,558 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 342 transitions, 4480 flow [2024-06-28 01:45:36,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:36,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:36,559 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 01:45:36,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 01:45:36,559 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 01:45:36,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:36,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1564703236, now seen corresponding path program 18 times [2024-06-28 01:45:36,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:36,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032142975] [2024-06-28 01:45:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:36,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:37,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032142975] [2024-06-28 01:45:37,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032142975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:37,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:37,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:37,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638469903] [2024-06-28 01:45:37,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:37,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:37,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:37,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:37,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:37,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:37,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 342 transitions, 4480 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:37,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:37,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:37,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:38,367 INFO L124 PetriNetUnfolderBase]: 2327/4194 cut-off events. [2024-06-28 01:45:38,367 INFO L125 PetriNetUnfolderBase]: For 207406/207406 co-relation queries the response was YES. [2024-06-28 01:45:38,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25701 conditions, 4194 events. 2327/4194 cut-off events. For 207406/207406 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28111 event pairs, 744 based on Foata normal form. 2/4070 useless extension candidates. Maximal degree in co-relation 25544. Up to 2787 conditions per place. [2024-06-28 01:45:38,426 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 247 selfloop transitions, 123 changer transitions 0/377 dead transitions. [2024-06-28 01:45:38,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 377 transitions, 5720 flow [2024-06-28 01:45:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:38,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-28 01:45:38,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-28 01:45:38,428 INFO L175 Difference]: Start difference. First operand has 323 places, 342 transitions, 4480 flow. Second operand 10 states and 175 transitions. [2024-06-28 01:45:38,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 377 transitions, 5720 flow [2024-06-28 01:45:39,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 377 transitions, 5414 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:39,576 INFO L231 Difference]: Finished difference. Result has 323 places, 344 transitions, 4533 flow [2024-06-28 01:45:39,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4533, PETRI_PLACES=323, PETRI_TRANSITIONS=344} [2024-06-28 01:45:39,576 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-28 01:45:39,576 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 344 transitions, 4533 flow [2024-06-28 01:45:39,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:39,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:39,577 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 01:45:39,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 01:45:39,577 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 01:45:39,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:39,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2038867750, now seen corresponding path program 19 times [2024-06-28 01:45:39,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:39,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445704796] [2024-06-28 01:45:39,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:39,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:40,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:40,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445704796] [2024-06-28 01:45:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445704796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:40,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:40,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:40,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559466875] [2024-06-28 01:45:40,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:40,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:40,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:40,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:40,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:40,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 344 transitions, 4533 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:40,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:40,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:40,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:41,719 INFO L124 PetriNetUnfolderBase]: 2411/4355 cut-off events. [2024-06-28 01:45:41,719 INFO L125 PetriNetUnfolderBase]: For 266662/266662 co-relation queries the response was YES. [2024-06-28 01:45:41,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26687 conditions, 4355 events. 2411/4355 cut-off events. For 266662/266662 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 29477 event pairs, 770 based on Foata normal form. 12/4235 useless extension candidates. Maximal degree in co-relation 26529. Up to 3337 conditions per place. [2024-06-28 01:45:41,771 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 249 selfloop transitions, 125 changer transitions 0/381 dead transitions. [2024-06-28 01:45:41,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 381 transitions, 5583 flow [2024-06-28 01:45:41,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:41,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-28 01:45:41,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391891891891892 [2024-06-28 01:45:41,773 INFO L175 Difference]: Start difference. First operand has 323 places, 344 transitions, 4533 flow. Second operand 12 states and 195 transitions. [2024-06-28 01:45:41,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 381 transitions, 5583 flow [2024-06-28 01:45:42,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 381 transitions, 5191 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:42,875 INFO L231 Difference]: Finished difference. Result has 327 places, 346 transitions, 4514 flow [2024-06-28 01:45:42,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4147, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4514, PETRI_PLACES=327, PETRI_TRANSITIONS=346} [2024-06-28 01:45:42,876 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 286 predicate places. [2024-06-28 01:45:42,876 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 346 transitions, 4514 flow [2024-06-28 01:45:42,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:42,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:42,876 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 01:45:42,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 01:45:42,877 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 01:45:42,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:42,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1682855570, now seen corresponding path program 3 times [2024-06-28 01:45:42,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:42,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356396199] [2024-06-28 01:45:42,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:42,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:43,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356396199] [2024-06-28 01:45:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356396199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:43,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:43,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:43,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646342382] [2024-06-28 01:45:43,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:43,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:43,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:43,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:43,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:43,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:43,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 346 transitions, 4514 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:43,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:43,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:43,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:44,843 INFO L124 PetriNetUnfolderBase]: 2506/4538 cut-off events. [2024-06-28 01:45:44,843 INFO L125 PetriNetUnfolderBase]: For 287476/287476 co-relation queries the response was YES. [2024-06-28 01:45:44,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28218 conditions, 4538 events. 2506/4538 cut-off events. For 287476/287476 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 31066 event pairs, 818 based on Foata normal form. 8/4412 useless extension candidates. Maximal degree in co-relation 28059. Up to 3149 conditions per place. [2024-06-28 01:45:44,893 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 255 selfloop transitions, 123 changer transitions 0/385 dead transitions. [2024-06-28 01:45:44,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 385 transitions, 5850 flow [2024-06-28 01:45:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:44,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:44,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-28 01:45:44,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-28 01:45:44,895 INFO L175 Difference]: Start difference. First operand has 327 places, 346 transitions, 4514 flow. Second operand 11 states and 186 transitions. [2024-06-28 01:45:44,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 385 transitions, 5850 flow [2024-06-28 01:45:46,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 385 transitions, 5517 flow, removed 44 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:46,275 INFO L231 Difference]: Finished difference. Result has 328 places, 348 transitions, 4598 flow [2024-06-28 01:45:46,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4181, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4598, PETRI_PLACES=328, PETRI_TRANSITIONS=348} [2024-06-28 01:45:46,276 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 287 predicate places. [2024-06-28 01:45:46,276 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 348 transitions, 4598 flow [2024-06-28 01:45:46,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:46,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:45:46,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 01:45:46,277 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 01:45:46,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:46,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1191666960, now seen corresponding path program 4 times [2024-06-28 01:45:46,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:46,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477668003] [2024-06-28 01:45:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:46,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:46,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:46,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477668003] [2024-06-28 01:45:46,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477668003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:46,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:46,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:46,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916862075] [2024-06-28 01:45:46,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:46,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:46,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:46,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:46,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 348 transitions, 4598 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:46,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:46,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:46,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:48,068 INFO L124 PetriNetUnfolderBase]: 2558/4641 cut-off events. [2024-06-28 01:45:48,068 INFO L125 PetriNetUnfolderBase]: For 292332/292332 co-relation queries the response was YES. [2024-06-28 01:45:48,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28487 conditions, 4641 events. 2558/4641 cut-off events. For 292332/292332 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 31916 event pairs, 814 based on Foata normal form. 8/4521 useless extension candidates. Maximal degree in co-relation 28327. Up to 2486 conditions per place. [2024-06-28 01:45:48,128 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 250 selfloop transitions, 134 changer transitions 0/391 dead transitions. [2024-06-28 01:45:48,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 391 transitions, 5900 flow [2024-06-28 01:45:48,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:48,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-28 01:45:48,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45495495495495497 [2024-06-28 01:45:48,130 INFO L175 Difference]: Start difference. First operand has 328 places, 348 transitions, 4598 flow. Second operand 12 states and 202 transitions. [2024-06-28 01:45:48,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 391 transitions, 5900 flow [2024-06-28 01:45:49,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 391 transitions, 5653 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-28 01:45:49,532 INFO L231 Difference]: Finished difference. Result has 333 places, 349 transitions, 4709 flow [2024-06-28 01:45:49,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4351, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4709, PETRI_PLACES=333, PETRI_TRANSITIONS=349} [2024-06-28 01:45:49,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 01:45:49,533 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 349 transitions, 4709 flow [2024-06-28 01:45:49,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:49,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:49,533 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 01:45:49,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 01:45:49,533 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 01:45:49,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:49,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1336330866, now seen corresponding path program 20 times [2024-06-28 01:45:49,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:49,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588870420] [2024-06-28 01:45:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:49,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:50,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:50,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:50,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588870420] [2024-06-28 01:45:50,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588870420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:50,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:50,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:45:50,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58779861] [2024-06-28 01:45:50,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:45:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:50,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:45:50,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:45:50,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:50,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 349 transitions, 4709 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:50,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:51,386 INFO L124 PetriNetUnfolderBase]: 2574/4668 cut-off events. [2024-06-28 01:45:51,386 INFO L125 PetriNetUnfolderBase]: For 260529/260529 co-relation queries the response was YES. [2024-06-28 01:45:51,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28974 conditions, 4668 events. 2574/4668 cut-off events. For 260529/260529 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 32328 event pairs, 903 based on Foata normal form. 2/4533 useless extension candidates. Maximal degree in co-relation 28812. Up to 3780 conditions per place. [2024-06-28 01:45:51,447 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 257 selfloop transitions, 111 changer transitions 0/375 dead transitions. [2024-06-28 01:45:51,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 375 transitions, 5685 flow [2024-06-28 01:45:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:45:51,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:45:51,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-28 01:45:51,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-28 01:45:51,449 INFO L175 Difference]: Start difference. First operand has 333 places, 349 transitions, 4709 flow. Second operand 10 states and 163 transitions. [2024-06-28 01:45:51,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 375 transitions, 5685 flow [2024-06-28 01:45:53,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 375 transitions, 5345 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-28 01:45:53,051 INFO L231 Difference]: Finished difference. Result has 333 places, 351 transitions, 4710 flow [2024-06-28 01:45:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4369, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4710, PETRI_PLACES=333, PETRI_TRANSITIONS=351} [2024-06-28 01:45:53,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 292 predicate places. [2024-06-28 01:45:53,052 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 351 transitions, 4710 flow [2024-06-28 01:45:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:53,052 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 01:45:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 01:45:53,052 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 01:45:53,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash 895845492, now seen corresponding path program 21 times [2024-06-28 01:45:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135943361] [2024-06-28 01:45:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:53,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:53,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:53,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:53,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135943361] [2024-06-28 01:45:53,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135943361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:53,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:53,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:53,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861889164] [2024-06-28 01:45:53,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:53,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:53,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:53,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:53,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:53,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:53,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 351 transitions, 4710 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:53,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:53,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:53,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:55,136 INFO L124 PetriNetUnfolderBase]: 2590/4697 cut-off events. [2024-06-28 01:45:55,137 INFO L125 PetriNetUnfolderBase]: For 260789/260789 co-relation queries the response was YES. [2024-06-28 01:45:55,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28983 conditions, 4697 events. 2590/4697 cut-off events. For 260789/260789 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32530 event pairs, 868 based on Foata normal form. 2/4567 useless extension candidates. Maximal degree in co-relation 28820. Up to 3468 conditions per place. [2024-06-28 01:45:55,206 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 251 selfloop transitions, 128 changer transitions 0/386 dead transitions. [2024-06-28 01:45:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 386 transitions, 5770 flow [2024-06-28 01:45:55,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:45:55,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:45:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-28 01:45:55,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-28 01:45:55,208 INFO L175 Difference]: Start difference. First operand has 333 places, 351 transitions, 4710 flow. Second operand 11 states and 185 transitions. [2024-06-28 01:45:55,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 386 transitions, 5770 flow [2024-06-28 01:45:56,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 386 transitions, 5449 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 01:45:56,976 INFO L231 Difference]: Finished difference. Result has 336 places, 353 transitions, 4768 flow [2024-06-28 01:45:56,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4768, PETRI_PLACES=336, PETRI_TRANSITIONS=353} [2024-06-28 01:45:56,976 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-28 01:45:56,977 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 353 transitions, 4768 flow [2024-06-28 01:45:56,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:56,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:45:56,977 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 01:45:56,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 01:45:56,977 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 01:45:56,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:45:56,980 INFO L85 PathProgramCache]: Analyzing trace with hash 904135140, now seen corresponding path program 5 times [2024-06-28 01:45:56,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:45:56,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841418114] [2024-06-28 01:45:56,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:45:56,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:45:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:45:57,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:45:57,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:45:57,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841418114] [2024-06-28 01:45:57,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841418114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:45:57,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:45:57,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:45:57,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139799223] [2024-06-28 01:45:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:45:57,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:45:57,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:45:57,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:45:57,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:45:57,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:45:57,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 353 transitions, 4768 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:45:57,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:45:57,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:45:57,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:45:59,099 INFO L124 PetriNetUnfolderBase]: 2658/4828 cut-off events. [2024-06-28 01:45:59,099 INFO L125 PetriNetUnfolderBase]: For 317424/317424 co-relation queries the response was YES. [2024-06-28 01:45:59,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29823 conditions, 4828 events. 2658/4828 cut-off events. For 317424/317424 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33610 event pairs, 912 based on Foata normal form. 10/4702 useless extension candidates. Maximal degree in co-relation 29659. Up to 3676 conditions per place. [2024-06-28 01:45:59,162 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 264 selfloop transitions, 117 changer transitions 0/388 dead transitions. [2024-06-28 01:45:59,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 388 transitions, 5804 flow [2024-06-28 01:45:59,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:45:59,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:45:59,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-28 01:45:59,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-28 01:45:59,164 INFO L175 Difference]: Start difference. First operand has 336 places, 353 transitions, 4768 flow. Second operand 12 states and 196 transitions. [2024-06-28 01:45:59,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 388 transitions, 5804 flow [2024-06-28 01:46:00,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 388 transitions, 5445 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:00,555 INFO L231 Difference]: Finished difference. Result has 339 places, 354 transitions, 4741 flow [2024-06-28 01:46:00,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4741, PETRI_PLACES=339, PETRI_TRANSITIONS=354} [2024-06-28 01:46:00,556 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 01:46:00,556 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 354 transitions, 4741 flow [2024-06-28 01:46:00,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:00,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:00,556 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 01:46:00,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 01:46:00,557 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 01:46:00,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:00,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1564876216, now seen corresponding path program 22 times [2024-06-28 01:46:00,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:00,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775160794] [2024-06-28 01:46:00,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:00,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:01,216 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 01:46:01,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:01,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775160794] [2024-06-28 01:46:01,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775160794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:01,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:01,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:01,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526139999] [2024-06-28 01:46:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:01,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:01,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:01,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:01,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:01,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 354 transitions, 4741 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:01,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:01,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:01,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:02,420 INFO L124 PetriNetUnfolderBase]: 2674/4855 cut-off events. [2024-06-28 01:46:02,421 INFO L125 PetriNetUnfolderBase]: For 276766/276766 co-relation queries the response was YES. [2024-06-28 01:46:02,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29955 conditions, 4855 events. 2674/4855 cut-off events. For 276766/276766 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 33965 event pairs, 941 based on Foata normal form. 2/4719 useless extension candidates. Maximal degree in co-relation 29790. Up to 3920 conditions per place. [2024-06-28 01:46:02,481 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 261 selfloop transitions, 114 changer transitions 0/382 dead transitions. [2024-06-28 01:46:02,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 382 transitions, 5755 flow [2024-06-28 01:46:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:02,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:46:02,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:46:02,482 INFO L175 Difference]: Start difference. First operand has 339 places, 354 transitions, 4741 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:46:02,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 382 transitions, 5755 flow [2024-06-28 01:46:04,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 382 transitions, 5455 flow, removed 37 selfloop flow, removed 10 redundant places. [2024-06-28 01:46:04,017 INFO L231 Difference]: Finished difference. Result has 339 places, 356 transitions, 4796 flow [2024-06-28 01:46:04,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4441, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4796, PETRI_PLACES=339, PETRI_TRANSITIONS=356} [2024-06-28 01:46:04,018 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 298 predicate places. [2024-06-28 01:46:04,018 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 356 transitions, 4796 flow [2024-06-28 01:46:04,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:04,018 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 01:46:04,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 01:46:04,018 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 01:46:04,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:04,019 INFO L85 PathProgramCache]: Analyzing trace with hash 904433670, now seen corresponding path program 6 times [2024-06-28 01:46:04,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:04,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966508521] [2024-06-28 01:46:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:04,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:04,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:04,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:04,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966508521] [2024-06-28 01:46:04,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966508521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:04,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:04,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:04,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802204956] [2024-06-28 01:46:04,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:04,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:04,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:04,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:04,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:04,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:04,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 356 transitions, 4796 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:04,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:05,933 INFO L124 PetriNetUnfolderBase]: 2769/5042 cut-off events. [2024-06-28 01:46:05,934 INFO L125 PetriNetUnfolderBase]: For 357238/357238 co-relation queries the response was YES. [2024-06-28 01:46:05,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31574 conditions, 5042 events. 2769/5042 cut-off events. For 357238/357238 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 35648 event pairs, 954 based on Foata normal form. 8/4915 useless extension candidates. Maximal degree in co-relation 31408. Up to 3516 conditions per place. [2024-06-28 01:46:06,005 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 269 selfloop transitions, 119 changer transitions 0/395 dead transitions. [2024-06-28 01:46:06,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 395 transitions, 6176 flow [2024-06-28 01:46:06,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:06,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:46:06,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:46:06,007 INFO L175 Difference]: Start difference. First operand has 339 places, 356 transitions, 4796 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:46:06,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 395 transitions, 6176 flow [2024-06-28 01:46:07,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 395 transitions, 5841 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:07,933 INFO L231 Difference]: Finished difference. Result has 342 places, 358 transitions, 4881 flow [2024-06-28 01:46:07,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4881, PETRI_PLACES=342, PETRI_TRANSITIONS=358} [2024-06-28 01:46:07,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 301 predicate places. [2024-06-28 01:46:07,934 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 358 transitions, 4881 flow [2024-06-28 01:46:07,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:07,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:07,934 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 01:46:07,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 01:46:07,934 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 01:46:07,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1374478058, now seen corresponding path program 7 times [2024-06-28 01:46:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:07,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950291593] [2024-06-28 01:46:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:07,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:08,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950291593] [2024-06-28 01:46:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950291593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:08,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:08,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749981185] [2024-06-28 01:46:08,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:08,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:08,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:08,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 358 transitions, 4881 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:08,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:08,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:08,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:09,748 INFO L124 PetriNetUnfolderBase]: 2837/5171 cut-off events. [2024-06-28 01:46:09,748 INFO L125 PetriNetUnfolderBase]: For 382691/382691 co-relation queries the response was YES. [2024-06-28 01:46:09,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32325 conditions, 5171 events. 2837/5171 cut-off events. For 382691/382691 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 36897 event pairs, 1093 based on Foata normal form. 10/5041 useless extension candidates. Maximal degree in co-relation 32158. Up to 4294 conditions per place. [2024-06-28 01:46:09,821 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 285 selfloop transitions, 95 changer transitions 0/387 dead transitions. [2024-06-28 01:46:09,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 387 transitions, 5887 flow [2024-06-28 01:46:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:09,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:09,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:09,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:46:09,822 INFO L175 Difference]: Start difference. First operand has 342 places, 358 transitions, 4881 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:09,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 387 transitions, 5887 flow [2024-06-28 01:46:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 387 transitions, 5640 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-28 01:46:11,911 INFO L231 Difference]: Finished difference. Result has 345 places, 359 transitions, 4924 flow [2024-06-28 01:46:11,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4634, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4924, PETRI_PLACES=345, PETRI_TRANSITIONS=359} [2024-06-28 01:46:11,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-28 01:46:11,911 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 359 transitions, 4924 flow [2024-06-28 01:46:11,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:11,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:11,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:46:11,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 01:46:11,912 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 01:46:11,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:11,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1792783876, now seen corresponding path program 23 times [2024-06-28 01:46:11,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:11,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026248158] [2024-06-28 01:46:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:11,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:12,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:12,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026248158] [2024-06-28 01:46:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026248158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:12,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540325284] [2024-06-28 01:46:12,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:12,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:12,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:12,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:12,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:12,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 359 transitions, 4924 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:12,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:12,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:12,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:13,894 INFO L124 PetriNetUnfolderBase]: 2853/5199 cut-off events. [2024-06-28 01:46:13,895 INFO L125 PetriNetUnfolderBase]: For 334158/334158 co-relation queries the response was YES. [2024-06-28 01:46:13,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32661 conditions, 5199 events. 2853/5199 cut-off events. For 334158/334158 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 37139 event pairs, 1070 based on Foata normal form. 2/5061 useless extension candidates. Maximal degree in co-relation 32492. Up to 4305 conditions per place. [2024-06-28 01:46:13,968 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 277 selfloop transitions, 101 changer transitions 0/385 dead transitions. [2024-06-28 01:46:13,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 385 transitions, 5932 flow [2024-06-28 01:46:13,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:46:13,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:46:13,969 INFO L175 Difference]: Start difference. First operand has 345 places, 359 transitions, 4924 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:46:13,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 385 transitions, 5932 flow [2024-06-28 01:46:16,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 385 transitions, 5670 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:16,100 INFO L231 Difference]: Finished difference. Result has 347 places, 361 transitions, 4995 flow [2024-06-28 01:46:16,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4662, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4995, PETRI_PLACES=347, PETRI_TRANSITIONS=361} [2024-06-28 01:46:16,101 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-28 01:46:16,101 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 361 transitions, 4995 flow [2024-06-28 01:46:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:16,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:16,101 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 01:46:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 01:46:16,101 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 01:46:16,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1792777366, now seen corresponding path program 24 times [2024-06-28 01:46:16,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224300104] [2024-06-28 01:46:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:16,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:16,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:16,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224300104] [2024-06-28 01:46:16,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224300104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:16,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:16,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:16,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884791733] [2024-06-28 01:46:16,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:16,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:16,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:16,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:16,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 361 transitions, 4995 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:16,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:16,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:16,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:18,156 INFO L124 PetriNetUnfolderBase]: 2869/5228 cut-off events. [2024-06-28 01:46:18,157 INFO L125 PetriNetUnfolderBase]: For 334442/334442 co-relation queries the response was YES. [2024-06-28 01:46:18,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32794 conditions, 5228 events. 2869/5228 cut-off events. For 334442/334442 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37356 event pairs, 1065 based on Foata normal form. 2/5092 useless extension candidates. Maximal degree in co-relation 32624. Up to 4115 conditions per place. [2024-06-28 01:46:18,233 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 281 selfloop transitions, 106 changer transitions 0/394 dead transitions. [2024-06-28 01:46:18,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 394 transitions, 6293 flow [2024-06-28 01:46:18,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:46:18,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:46:18,235 INFO L175 Difference]: Start difference. First operand has 347 places, 361 transitions, 4995 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:46:18,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 394 transitions, 6293 flow [2024-06-28 01:46:20,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 394 transitions, 5980 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:20,413 INFO L231 Difference]: Finished difference. Result has 349 places, 363 transitions, 5025 flow [2024-06-28 01:46:20,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4682, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5025, PETRI_PLACES=349, PETRI_TRANSITIONS=363} [2024-06-28 01:46:20,414 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 308 predicate places. [2024-06-28 01:46:20,414 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 363 transitions, 5025 flow [2024-06-28 01:46:20,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:20,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:20,414 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 01:46:20,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 01:46:20,415 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 01:46:20,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:20,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1801355314, now seen corresponding path program 8 times [2024-06-28 01:46:20,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:20,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858572637] [2024-06-28 01:46:20,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:20,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:21,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:21,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858572637] [2024-06-28 01:46:21,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858572637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:21,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:21,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:21,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239483955] [2024-06-28 01:46:21,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:21,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:21,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:21,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:21,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:21,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:21,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 363 transitions, 5025 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:21,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:21,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:21,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:22,513 INFO L124 PetriNetUnfolderBase]: 2853/5200 cut-off events. [2024-06-28 01:46:22,513 INFO L125 PetriNetUnfolderBase]: For 323635/323635 co-relation queries the response was YES. [2024-06-28 01:46:22,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31147 conditions, 5200 events. 2853/5200 cut-off events. For 323635/323635 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37073 event pairs, 1062 based on Foata normal form. 12/5072 useless extension candidates. Maximal degree in co-relation 30976. Up to 4175 conditions per place. [2024-06-28 01:46:22,580 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 283 selfloop transitions, 101 changer transitions 0/391 dead transitions. [2024-06-28 01:46:22,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 391 transitions, 5949 flow [2024-06-28 01:46:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:22,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-28 01:46:22,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45135135135135135 [2024-06-28 01:46:22,582 INFO L175 Difference]: Start difference. First operand has 349 places, 363 transitions, 5025 flow. Second operand 10 states and 167 transitions. [2024-06-28 01:46:22,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 391 transitions, 5949 flow [2024-06-28 01:46:24,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 391 transitions, 5491 flow, removed 110 selfloop flow, removed 8 redundant places. [2024-06-28 01:46:24,268 INFO L231 Difference]: Finished difference. Result has 351 places, 363 transitions, 4776 flow [2024-06-28 01:46:24,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4776, PETRI_PLACES=351, PETRI_TRANSITIONS=363} [2024-06-28 01:46:24,269 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-28 01:46:24,269 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 363 transitions, 4776 flow [2024-06-28 01:46:24,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:24,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:24,269 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 01:46:24,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 01:46:24,269 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 01:46:24,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:24,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1801365544, now seen corresponding path program 9 times [2024-06-28 01:46:24,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:24,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718742168] [2024-06-28 01:46:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:24,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:24,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:24,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:24,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718742168] [2024-06-28 01:46:24,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718742168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:24,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:24,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 01:46:24,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902013411] [2024-06-28 01:46:24,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:24,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 01:46:24,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:24,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 01:46:24,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 01:46:24,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 363 transitions, 4776 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:26,052 INFO L124 PetriNetUnfolderBase]: 2910/5319 cut-off events. [2024-06-28 01:46:26,052 INFO L125 PetriNetUnfolderBase]: For 308210/308210 co-relation queries the response was YES. [2024-06-28 01:46:26,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31250 conditions, 5319 events. 2910/5319 cut-off events. For 308210/308210 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 38283 event pairs, 1075 based on Foata normal form. 8/5190 useless extension candidates. Maximal degree in co-relation 31078. Up to 3891 conditions per place. [2024-06-28 01:46:26,129 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 288 selfloop transitions, 104 changer transitions 0/399 dead transitions. [2024-06-28 01:46:26,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 399 transitions, 6166 flow [2024-06-28 01:46:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:26,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:26,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-28 01:46:26,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-28 01:46:26,131 INFO L175 Difference]: Start difference. First operand has 351 places, 363 transitions, 4776 flow. Second operand 10 states and 172 transitions. [2024-06-28 01:46:26,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 399 transitions, 6166 flow [2024-06-28 01:46:27,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 399 transitions, 5936 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-06-28 01:46:27,799 INFO L231 Difference]: Finished difference. Result has 350 places, 365 transitions, 4948 flow [2024-06-28 01:46:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4948, PETRI_PLACES=350, PETRI_TRANSITIONS=365} [2024-06-28 01:46:27,799 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-28 01:46:27,799 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 365 transitions, 4948 flow [2024-06-28 01:46:27,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:27,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:27,800 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 01:46:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 01:46:27,800 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 01:46:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1813519218, now seen corresponding path program 1 times [2024-06-28 01:46:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:27,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011861177] [2024-06-28 01:46:27,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:28,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:28,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011861177] [2024-06-28 01:46:28,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011861177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:28,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:28,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839919286] [2024-06-28 01:46:28,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:28,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:28,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:28,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:28,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:28,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:28,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 365 transitions, 4948 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:28,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:28,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:28,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:30,118 INFO L124 PetriNetUnfolderBase]: 2946/5391 cut-off events. [2024-06-28 01:46:30,119 INFO L125 PetriNetUnfolderBase]: For 298636/298636 co-relation queries the response was YES. [2024-06-28 01:46:30,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31687 conditions, 5391 events. 2946/5391 cut-off events. For 298636/298636 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 39072 event pairs, 1087 based on Foata normal form. 6/5292 useless extension candidates. Maximal degree in co-relation 31516. Up to 4647 conditions per place. [2024-06-28 01:46:30,193 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 322 selfloop transitions, 76 changer transitions 0/405 dead transitions. [2024-06-28 01:46:30,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 405 transitions, 6062 flow [2024-06-28 01:46:30,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:30,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-28 01:46:30,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-28 01:46:30,195 INFO L175 Difference]: Start difference. First operand has 350 places, 365 transitions, 4948 flow. Second operand 11 states and 172 transitions. [2024-06-28 01:46:30,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 405 transitions, 6062 flow [2024-06-28 01:46:32,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 405 transitions, 5839 flow, removed 49 selfloop flow, removed 6 redundant places. [2024-06-28 01:46:32,031 INFO L231 Difference]: Finished difference. Result has 355 places, 366 transitions, 4977 flow [2024-06-28 01:46:32,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4725, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4977, PETRI_PLACES=355, PETRI_TRANSITIONS=366} [2024-06-28 01:46:32,031 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-28 01:46:32,031 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 366 transitions, 4977 flow [2024-06-28 01:46:32,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:32,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:32,032 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 01:46:32,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 01:46:32,032 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 01:46:32,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:32,032 INFO L85 PathProgramCache]: Analyzing trace with hash -823846936, now seen corresponding path program 2 times [2024-06-28 01:46:32,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:32,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779658844] [2024-06-28 01:46:32,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:32,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:32,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:32,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:32,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779658844] [2024-06-28 01:46:32,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779658844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:32,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:32,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:32,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584221725] [2024-06-28 01:46:32,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:32,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:32,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:32,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:33,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:33,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 366 transitions, 4977 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:33,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:33,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:33,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:34,243 INFO L124 PetriNetUnfolderBase]: 2982/5465 cut-off events. [2024-06-28 01:46:34,243 INFO L125 PetriNetUnfolderBase]: For 300163/300163 co-relation queries the response was YES. [2024-06-28 01:46:34,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32113 conditions, 5465 events. 2982/5465 cut-off events. For 300163/300163 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 39819 event pairs, 1197 based on Foata normal form. 6/5334 useless extension candidates. Maximal degree in co-relation 31940. Up to 4865 conditions per place. [2024-06-28 01:46:34,317 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 331 selfloop transitions, 65 changer transitions 0/403 dead transitions. [2024-06-28 01:46:34,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 403 transitions, 6069 flow [2024-06-28 01:46:34,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:34,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-28 01:46:34,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-28 01:46:34,319 INFO L175 Difference]: Start difference. First operand has 355 places, 366 transitions, 4977 flow. Second operand 11 states and 173 transitions. [2024-06-28 01:46:34,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 403 transitions, 6069 flow [2024-06-28 01:46:36,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 403 transitions, 5827 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:36,232 INFO L231 Difference]: Finished difference. Result has 357 places, 367 transitions, 4967 flow [2024-06-28 01:46:36,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4735, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4967, PETRI_PLACES=357, PETRI_TRANSITIONS=367} [2024-06-28 01:46:36,233 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-28 01:46:36,233 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 367 transitions, 4967 flow [2024-06-28 01:46:36,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:36,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:36,233 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 01:46:36,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 01:46:36,234 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 01:46:36,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:36,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1271732408, now seen corresponding path program 3 times [2024-06-28 01:46:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:36,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433676245] [2024-06-28 01:46:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:36,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:37,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:37,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433676245] [2024-06-28 01:46:37,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433676245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:37,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:37,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:37,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797354975] [2024-06-28 01:46:37,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:37,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:37,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:37,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:37,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:37,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:37,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 367 transitions, 4967 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:37,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:37,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:37,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:38,698 INFO L124 PetriNetUnfolderBase]: 3018/5537 cut-off events. [2024-06-28 01:46:38,699 INFO L125 PetriNetUnfolderBase]: For 305282/305282 co-relation queries the response was YES. [2024-06-28 01:46:38,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32342 conditions, 5537 events. 3018/5537 cut-off events. For 305282/305282 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 40503 event pairs, 1216 based on Foata normal form. 6/5407 useless extension candidates. Maximal degree in co-relation 32168. Up to 4825 conditions per place. [2024-06-28 01:46:38,784 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 65 changer transitions 0/406 dead transitions. [2024-06-28 01:46:38,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 406 transitions, 6083 flow [2024-06-28 01:46:38,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:46:38,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:46:38,786 INFO L175 Difference]: Start difference. First operand has 357 places, 367 transitions, 4967 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:46:38,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 406 transitions, 6083 flow [2024-06-28 01:46:40,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 406 transitions, 5861 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:40,613 INFO L231 Difference]: Finished difference. Result has 359 places, 368 transitions, 4979 flow [2024-06-28 01:46:40,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4745, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4979, PETRI_PLACES=359, PETRI_TRANSITIONS=368} [2024-06-28 01:46:40,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-28 01:46:40,613 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 368 transitions, 4979 flow [2024-06-28 01:46:40,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:40,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:40,614 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 01:46:40,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 01:46:40,614 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 01:46:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash 631107732, now seen corresponding path program 4 times [2024-06-28 01:46:40,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:40,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869076206] [2024-06-28 01:46:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:41,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:41,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:41,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869076206] [2024-06-28 01:46:41,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869076206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:41,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:41,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:41,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366897566] [2024-06-28 01:46:41,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:41,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:41,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:41,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:41,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:41,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:41,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 368 transitions, 4979 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:41,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:41,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:41,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:42,921 INFO L124 PetriNetUnfolderBase]: 3054/5609 cut-off events. [2024-06-28 01:46:42,921 INFO L125 PetriNetUnfolderBase]: For 306524/306524 co-relation queries the response was YES. [2024-06-28 01:46:42,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32560 conditions, 5609 events. 3054/5609 cut-off events. For 306524/306524 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 41178 event pairs, 1285 based on Foata normal form. 6/5476 useless extension candidates. Maximal degree in co-relation 32385. Up to 5143 conditions per place. [2024-06-28 01:46:43,008 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 330 selfloop transitions, 64 changer transitions 0/401 dead transitions. [2024-06-28 01:46:43,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 401 transitions, 6005 flow [2024-06-28 01:46:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:43,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-28 01:46:43,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-28 01:46:43,009 INFO L175 Difference]: Start difference. First operand has 359 places, 368 transitions, 4979 flow. Second operand 11 states and 165 transitions. [2024-06-28 01:46:43,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 401 transitions, 6005 flow [2024-06-28 01:46:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 401 transitions, 5781 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:44,931 INFO L231 Difference]: Finished difference. Result has 361 places, 369 transitions, 4955 flow [2024-06-28 01:46:44,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4755, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4955, PETRI_PLACES=361, PETRI_TRANSITIONS=369} [2024-06-28 01:46:44,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-28 01:46:44,932 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 369 transitions, 4955 flow [2024-06-28 01:46:44,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:44,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:44,932 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 01:46:44,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 01:46:44,932 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 01:46:44,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1603201572, now seen corresponding path program 5 times [2024-06-28 01:46:44,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:44,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068619730] [2024-06-28 01:46:44,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:44,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:45,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:45,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:45,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068619730] [2024-06-28 01:46:45,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068619730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:45,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:45,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352563374] [2024-06-28 01:46:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:45,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:45,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 369 transitions, 4955 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:45,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:45,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:45,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:47,402 INFO L124 PetriNetUnfolderBase]: 3090/5681 cut-off events. [2024-06-28 01:46:47,403 INFO L125 PetriNetUnfolderBase]: For 311130/311130 co-relation queries the response was YES. [2024-06-28 01:46:47,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32816 conditions, 5681 events. 3090/5681 cut-off events. For 311130/311130 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41963 event pairs, 1297 based on Foata normal form. 6/5549 useless extension candidates. Maximal degree in co-relation 32640. Up to 5167 conditions per place. [2024-06-28 01:46:47,473 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 331 selfloop transitions, 66 changer transitions 0/404 dead transitions. [2024-06-28 01:46:47,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 404 transitions, 6037 flow [2024-06-28 01:46:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:47,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-28 01:46:47,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-28 01:46:47,474 INFO L175 Difference]: Start difference. First operand has 361 places, 369 transitions, 4955 flow. Second operand 11 states and 169 transitions. [2024-06-28 01:46:47,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 404 transitions, 6037 flow [2024-06-28 01:46:49,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 404 transitions, 5849 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:49,153 INFO L231 Difference]: Finished difference. Result has 363 places, 370 transitions, 5005 flow [2024-06-28 01:46:49,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4767, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5005, PETRI_PLACES=363, PETRI_TRANSITIONS=370} [2024-06-28 01:46:49,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-28 01:46:49,154 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 370 transitions, 5005 flow [2024-06-28 01:46:49,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:49,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:49,154 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 01:46:49,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 01:46:49,155 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 01:46:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash 706428388, now seen corresponding path program 6 times [2024-06-28 01:46:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619121770] [2024-06-28 01:46:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:49,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:49,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:49,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619121770] [2024-06-28 01:46:49,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619121770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:49,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:49,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:46:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137578105] [2024-06-28 01:46:49,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:49,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:46:49,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:49,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:46:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:46:50,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:50,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 370 transitions, 5005 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:50,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:50,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:50,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:51,523 INFO L124 PetriNetUnfolderBase]: 3126/5751 cut-off events. [2024-06-28 01:46:51,524 INFO L125 PetriNetUnfolderBase]: For 316453/316453 co-relation queries the response was YES. [2024-06-28 01:46:51,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33140 conditions, 5751 events. 3126/5751 cut-off events. For 316453/316453 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 42482 event pairs, 1240 based on Foata normal form. 6/5617 useless extension candidates. Maximal degree in co-relation 32963. Up to 4648 conditions per place. [2024-06-28 01:46:51,645 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 278 selfloop transitions, 121 changer transitions 0/406 dead transitions. [2024-06-28 01:46:51,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 406 transitions, 6067 flow [2024-06-28 01:46:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:46:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:46:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-28 01:46:51,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44717444717444715 [2024-06-28 01:46:51,647 INFO L175 Difference]: Start difference. First operand has 363 places, 370 transitions, 5005 flow. Second operand 11 states and 182 transitions. [2024-06-28 01:46:51,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 406 transitions, 6067 flow [2024-06-28 01:46:54,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 406 transitions, 5839 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:54,122 INFO L231 Difference]: Finished difference. Result has 365 places, 371 transitions, 5093 flow [2024-06-28 01:46:54,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4777, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5093, PETRI_PLACES=365, PETRI_TRANSITIONS=371} [2024-06-28 01:46:54,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-28 01:46:54,122 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 371 transitions, 5093 flow [2024-06-28 01:46:54,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:54,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:54,124 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 01:46:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 01:46:54,124 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 01:46:54,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash -334789138, now seen corresponding path program 7 times [2024-06-28 01:46:54,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:54,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19140873] [2024-06-28 01:46:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:54,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:54,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:54,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19140873] [2024-06-28 01:46:54,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19140873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:54,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:54,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:54,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669786953] [2024-06-28 01:46:54,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:54,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:54,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:55,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:55,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 371 transitions, 5093 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:55,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:55,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:55,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:46:56,421 INFO L124 PetriNetUnfolderBase]: 3119/5738 cut-off events. [2024-06-28 01:46:56,421 INFO L125 PetriNetUnfolderBase]: For 271889/271889 co-relation queries the response was YES. [2024-06-28 01:46:56,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32434 conditions, 5738 events. 3119/5738 cut-off events. For 271889/271889 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 42471 event pairs, 1209 based on Foata normal form. 6/5607 useless extension candidates. Maximal degree in co-relation 32256. Up to 4686 conditions per place. [2024-06-28 01:46:56,513 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 273 selfloop transitions, 120 changer transitions 0/400 dead transitions. [2024-06-28 01:46:56,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 400 transitions, 6050 flow [2024-06-28 01:46:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:46:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:46:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-28 01:46:56,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-28 01:46:56,516 INFO L175 Difference]: Start difference. First operand has 365 places, 371 transitions, 5093 flow. Second operand 10 states and 162 transitions. [2024-06-28 01:46:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 400 transitions, 6050 flow [2024-06-28 01:46:58,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 400 transitions, 5702 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 01:46:58,075 INFO L231 Difference]: Finished difference. Result has 367 places, 372 transitions, 5030 flow [2024-06-28 01:46:58,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4747, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5030, PETRI_PLACES=367, PETRI_TRANSITIONS=372} [2024-06-28 01:46:58,075 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 326 predicate places. [2024-06-28 01:46:58,075 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 372 transitions, 5030 flow [2024-06-28 01:46:58,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:58,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:46:58,076 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 01:46:58,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 01:46:58,076 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 01:46:58,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:46:58,076 INFO L85 PathProgramCache]: Analyzing trace with hash -334990948, now seen corresponding path program 8 times [2024-06-28 01:46:58,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:46:58,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392366135] [2024-06-28 01:46:58,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:46:58,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:46:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:46:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:46:58,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:46:58,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392366135] [2024-06-28 01:46:58,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392366135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:46:58,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:46:58,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:46:58,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503170079] [2024-06-28 01:46:58,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:46:58,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:46:58,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:46:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:46:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:46:58,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:46:58,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 372 transitions, 5030 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:46:58,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:46:58,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:46:58,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:00,184 INFO L124 PetriNetUnfolderBase]: 3155/5810 cut-off events. [2024-06-28 01:47:00,184 INFO L125 PetriNetUnfolderBase]: For 276990/276990 co-relation queries the response was YES. [2024-06-28 01:47:00,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32781 conditions, 5810 events. 3155/5810 cut-off events. For 276990/276990 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 43174 event pairs, 1208 based on Foata normal form. 6/5683 useless extension candidates. Maximal degree in co-relation 32601. Up to 4656 conditions per place. [2024-06-28 01:47:00,266 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 267 selfloop transitions, 129 changer transitions 0/403 dead transitions. [2024-06-28 01:47:00,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 403 transitions, 6094 flow [2024-06-28 01:47:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-28 01:47:00,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-28 01:47:00,268 INFO L175 Difference]: Start difference. First operand has 367 places, 372 transitions, 5030 flow. Second operand 10 states and 164 transitions. [2024-06-28 01:47:00,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 403 transitions, 6094 flow [2024-06-28 01:47:01,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 403 transitions, 5820 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:01,875 INFO L231 Difference]: Finished difference. Result has 369 places, 373 transitions, 5126 flow [2024-06-28 01:47:01,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5126, PETRI_PLACES=369, PETRI_TRANSITIONS=373} [2024-06-28 01:47:01,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-28 01:47:01,875 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 373 transitions, 5126 flow [2024-06-28 01:47:01,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:01,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:01,876 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 01:47:01,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 01:47:01,876 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 01:47:01,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:01,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1184645614, now seen corresponding path program 9 times [2024-06-28 01:47:01,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:01,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194256370] [2024-06-28 01:47:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:01,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194256370] [2024-06-28 01:47:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194256370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:02,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:02,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:02,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786363787] [2024-06-28 01:47:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:02,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:02,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:02,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:02,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 373 transitions, 5126 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:02,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:02,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:02,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:04,249 INFO L124 PetriNetUnfolderBase]: 3191/5882 cut-off events. [2024-06-28 01:47:04,250 INFO L125 PetriNetUnfolderBase]: For 282013/282013 co-relation queries the response was YES. [2024-06-28 01:47:04,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33345 conditions, 5882 events. 3191/5882 cut-off events. For 282013/282013 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 43835 event pairs, 1258 based on Foata normal form. 6/5753 useless extension candidates. Maximal degree in co-relation 33164. Up to 4585 conditions per place. [2024-06-28 01:47:04,328 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 279 selfloop transitions, 127 changer transitions 0/413 dead transitions. [2024-06-28 01:47:04,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 413 transitions, 6270 flow [2024-06-28 01:47:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:04,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-28 01:47:04,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-28 01:47:04,329 INFO L175 Difference]: Start difference. First operand has 369 places, 373 transitions, 5126 flow. Second operand 11 states and 188 transitions. [2024-06-28 01:47:04,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 413 transitions, 6270 flow [2024-06-28 01:47:05,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 413 transitions, 5914 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:05,897 INFO L231 Difference]: Finished difference. Result has 372 places, 374 transitions, 5134 flow [2024-06-28 01:47:05,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5134, PETRI_PLACES=372, PETRI_TRANSITIONS=374} [2024-06-28 01:47:05,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 331 predicate places. [2024-06-28 01:47:05,897 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 374 transitions, 5134 flow [2024-06-28 01:47:05,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:05,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:05,898 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 01:47:05,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 01:47:05,898 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 01:47:05,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1365813552, now seen corresponding path program 10 times [2024-06-28 01:47:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287066959] [2024-06-28 01:47:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:05,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:06,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:06,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:06,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287066959] [2024-06-28 01:47:06,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287066959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:06,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:06,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:06,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593335881] [2024-06-28 01:47:06,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:06,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:06,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:06,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:06,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 374 transitions, 5134 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:06,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:06,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:06,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:08,429 INFO L124 PetriNetUnfolderBase]: 3227/5954 cut-off events. [2024-06-28 01:47:08,430 INFO L125 PetriNetUnfolderBase]: For 282373/282373 co-relation queries the response was YES. [2024-06-28 01:47:08,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33620 conditions, 5954 events. 3227/5954 cut-off events. For 282373/282373 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 44612 event pairs, 1361 based on Foata normal form. 6/5821 useless extension candidates. Maximal degree in co-relation 33438. Up to 5044 conditions per place. [2024-06-28 01:47:08,498 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 301 selfloop transitions, 102 changer transitions 0/410 dead transitions. [2024-06-28 01:47:08,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 410 transitions, 6246 flow [2024-06-28 01:47:08,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-28 01:47:08,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-28 01:47:08,500 INFO L175 Difference]: Start difference. First operand has 372 places, 374 transitions, 5134 flow. Second operand 11 states and 180 transitions. [2024-06-28 01:47:08,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 410 transitions, 6246 flow [2024-06-28 01:47:09,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 410 transitions, 5894 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:09,852 INFO L231 Difference]: Finished difference. Result has 374 places, 375 transitions, 5096 flow [2024-06-28 01:47:09,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4782, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5096, PETRI_PLACES=374, PETRI_TRANSITIONS=375} [2024-06-28 01:47:09,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-28 01:47:09,852 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 375 transitions, 5096 flow [2024-06-28 01:47:09,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:09,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:09,852 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 01:47:09,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 01:47:09,853 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 01:47:09,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:09,853 INFO L85 PathProgramCache]: Analyzing trace with hash -369668222, now seen corresponding path program 11 times [2024-06-28 01:47:09,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:09,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026624474] [2024-06-28 01:47:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:09,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026624474] [2024-06-28 01:47:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026624474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:10,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 01:47:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610931967] [2024-06-28 01:47:10,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:10,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:10,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:10,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 375 transitions, 5096 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:10,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:10,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:10,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:12,072 INFO L124 PetriNetUnfolderBase]: 3263/6026 cut-off events. [2024-06-28 01:47:12,072 INFO L125 PetriNetUnfolderBase]: For 287646/287646 co-relation queries the response was YES. [2024-06-28 01:47:12,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33782 conditions, 6026 events. 3263/6026 cut-off events. For 287646/287646 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 45395 event pairs, 1236 based on Foata normal form. 6/5915 useless extension candidates. Maximal degree in co-relation 33599. Up to 4122 conditions per place. [2024-06-28 01:47:12,158 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 251 selfloop transitions, 155 changer transitions 0/413 dead transitions. [2024-06-28 01:47:12,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 413 transitions, 6262 flow [2024-06-28 01:47:12,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 01:47:12,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 01:47:12,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-28 01:47:12,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-28 01:47:12,159 INFO L175 Difference]: Start difference. First operand has 374 places, 375 transitions, 5096 flow. Second operand 10 states and 165 transitions. [2024-06-28 01:47:12,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 413 transitions, 6262 flow [2024-06-28 01:47:13,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 413 transitions, 5997 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:13,954 INFO L231 Difference]: Finished difference. Result has 377 places, 379 transitions, 5407 flow [2024-06-28 01:47:13,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5407, PETRI_PLACES=377, PETRI_TRANSITIONS=379} [2024-06-28 01:47:13,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-28 01:47:13,954 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 379 transitions, 5407 flow [2024-06-28 01:47:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:13,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:13,955 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 01:47:13,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 01:47:13,955 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 01:47:13,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2036857018, now seen corresponding path program 12 times [2024-06-28 01:47:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:13,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494743319] [2024-06-28 01:47:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:14,741 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 01:47:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494743319] [2024-06-28 01:47:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494743319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:14,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:14,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:14,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059795788] [2024-06-28 01:47:14,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:14,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:14,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:14,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:14,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:14,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 379 transitions, 5407 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:14,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:14,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:14,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:16,260 INFO L124 PetriNetUnfolderBase]: 3299/6098 cut-off events. [2024-06-28 01:47:16,260 INFO L125 PetriNetUnfolderBase]: For 290050/290050 co-relation queries the response was YES. [2024-06-28 01:47:16,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34792 conditions, 6098 events. 3299/6098 cut-off events. For 290050/290050 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 46012 event pairs, 1377 based on Foata normal form. 6/5964 useless extension candidates. Maximal degree in co-relation 34607. Up to 4995 conditions per place. [2024-06-28 01:47:16,351 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 293 selfloop transitions, 118 changer transitions 0/418 dead transitions. [2024-06-28 01:47:16,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 418 transitions, 6517 flow [2024-06-28 01:47:16,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 01:47:16,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 01:47:16,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-28 01:47:16,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-28 01:47:16,352 INFO L175 Difference]: Start difference. First operand has 377 places, 379 transitions, 5407 flow. Second operand 12 states and 199 transitions. [2024-06-28 01:47:16,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 418 transitions, 6517 flow [2024-06-28 01:47:17,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 418 transitions, 6175 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-28 01:47:17,883 INFO L231 Difference]: Finished difference. Result has 382 places, 380 transitions, 5383 flow [2024-06-28 01:47:17,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5065, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5383, PETRI_PLACES=382, PETRI_TRANSITIONS=380} [2024-06-28 01:47:17,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 341 predicate places. [2024-06-28 01:47:17,883 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 380 transitions, 5383 flow [2024-06-28 01:47:17,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:17,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:17,884 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 01:47:17,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 01:47:17,884 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 01:47:17,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:17,884 INFO L85 PathProgramCache]: Analyzing trace with hash 2001609768, now seen corresponding path program 13 times [2024-06-28 01:47:17,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:17,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332293367] [2024-06-28 01:47:17,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:17,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:18,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:18,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332293367] [2024-06-28 01:47:18,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332293367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754047644] [2024-06-28 01:47:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:18,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:18,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:18,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:18,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:18,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:18,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 380 transitions, 5383 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:18,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:18,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:18,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:20,291 INFO L124 PetriNetUnfolderBase]: 3292/6085 cut-off events. [2024-06-28 01:47:20,292 INFO L125 PetriNetUnfolderBase]: For 237371/237371 co-relation queries the response was YES. [2024-06-28 01:47:20,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33552 conditions, 6085 events. 3292/6085 cut-off events. For 237371/237371 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 45882 event pairs, 1382 based on Foata normal form. 6/5951 useless extension candidates. Maximal degree in co-relation 33366. Up to 5193 conditions per place. [2024-06-28 01:47:20,378 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 295 selfloop transitions, 109 changer transitions 0/411 dead transitions. [2024-06-28 01:47:20,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 411 transitions, 6361 flow [2024-06-28 01:47:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:20,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:20,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-28 01:47:20,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-28 01:47:20,380 INFO L175 Difference]: Start difference. First operand has 382 places, 380 transitions, 5383 flow. Second operand 11 states and 177 transitions. [2024-06-28 01:47:20,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 411 transitions, 6361 flow [2024-06-28 01:47:21,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 411 transitions, 5999 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:21,743 INFO L231 Difference]: Finished difference. Result has 383 places, 380 transitions, 5245 flow [2024-06-28 01:47:21,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5021, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5245, PETRI_PLACES=383, PETRI_TRANSITIONS=380} [2024-06-28 01:47:21,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-28 01:47:21,743 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 380 transitions, 5245 flow [2024-06-28 01:47:21,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:21,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:21,744 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 01:47:21,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 01:47:21,744 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 01:47:21,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1261161542, now seen corresponding path program 14 times [2024-06-28 01:47:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:21,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776052982] [2024-06-28 01:47:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:21,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:22,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:22,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776052982] [2024-06-28 01:47:22,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776052982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:22,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:22,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:22,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158909646] [2024-06-28 01:47:22,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:22,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:22,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:22,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:22,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:22,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:22,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 380 transitions, 5245 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:22,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:22,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:22,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:24,327 INFO L124 PetriNetUnfolderBase]: 3328/6157 cut-off events. [2024-06-28 01:47:24,327 INFO L125 PetriNetUnfolderBase]: For 240915/240915 co-relation queries the response was YES. [2024-06-28 01:47:24,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33704 conditions, 6157 events. 3328/6157 cut-off events. For 240915/240915 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 46534 event pairs, 1367 based on Foata normal form. 6/6035 useless extension candidates. Maximal degree in co-relation 33517. Up to 4484 conditions per place. [2024-06-28 01:47:24,410 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 274 selfloop transitions, 139 changer transitions 0/420 dead transitions. [2024-06-28 01:47:24,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 420 transitions, 6405 flow [2024-06-28 01:47:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-28 01:47:24,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-28 01:47:24,411 INFO L175 Difference]: Start difference. First operand has 383 places, 380 transitions, 5245 flow. Second operand 11 states and 190 transitions. [2024-06-28 01:47:24,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 420 transitions, 6405 flow [2024-06-28 01:47:25,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 420 transitions, 6097 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:25,741 INFO L231 Difference]: Finished difference. Result has 384 places, 381 transitions, 5327 flow [2024-06-28 01:47:25,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4937, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5327, PETRI_PLACES=384, PETRI_TRANSITIONS=381} [2024-06-28 01:47:25,741 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-28 01:47:25,742 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 381 transitions, 5327 flow [2024-06-28 01:47:25,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:25,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:25,742 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 01:47:25,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 01:47:25,742 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 01:47:25,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:25,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1266725732, now seen corresponding path program 15 times [2024-06-28 01:47:25,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:25,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146178699] [2024-06-28 01:47:25,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:25,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:26,590 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 01:47:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:26,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146178699] [2024-06-28 01:47:26,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146178699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:26,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:26,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:26,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962036956] [2024-06-28 01:47:26,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:26,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:26,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:26,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:26,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:26,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 381 transitions, 5327 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:26,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:26,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:26,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:28,343 INFO L124 PetriNetUnfolderBase]: 3364/6229 cut-off events. [2024-06-28 01:47:28,343 INFO L125 PetriNetUnfolderBase]: For 245454/245454 co-relation queries the response was YES. [2024-06-28 01:47:28,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34303 conditions, 6229 events. 3364/6229 cut-off events. For 245454/245454 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 47227 event pairs, 1449 based on Foata normal form. 6/6094 useless extension candidates. Maximal degree in co-relation 34115. Up to 5256 conditions per place. [2024-06-28 01:47:28,415 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 294 selfloop transitions, 112 changer transitions 0/413 dead transitions. [2024-06-28 01:47:28,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 413 transitions, 6387 flow [2024-06-28 01:47:28,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:28,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:28,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:47:28,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:47:28,416 INFO L175 Difference]: Start difference. First operand has 384 places, 381 transitions, 5327 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:47:28,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 413 transitions, 6387 flow [2024-06-28 01:47:29,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 413 transitions, 6007 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:29,796 INFO L231 Difference]: Finished difference. Result has 386 places, 382 transitions, 5255 flow [2024-06-28 01:47:29,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5255, PETRI_PLACES=386, PETRI_TRANSITIONS=382} [2024-06-28 01:47:29,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-28 01:47:29,796 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 382 transitions, 5255 flow [2024-06-28 01:47:29,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:29,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:29,797 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 01:47:29,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 01:47:29,797 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 01:47:29,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2001407958, now seen corresponding path program 16 times [2024-06-28 01:47:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067764930] [2024-06-28 01:47:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:30,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:30,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:30,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067764930] [2024-06-28 01:47:30,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067764930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:30,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:30,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:30,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26787996] [2024-06-28 01:47:30,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:30,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:30,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:30,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:30,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:30,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:30,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 382 transitions, 5255 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:30,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:30,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:30,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:32,299 INFO L124 PetriNetUnfolderBase]: 3400/6301 cut-off events. [2024-06-28 01:47:32,299 INFO L125 PetriNetUnfolderBase]: For 248645/248645 co-relation queries the response was YES. [2024-06-28 01:47:32,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34394 conditions, 6301 events. 3400/6301 cut-off events. For 248645/248645 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 48028 event pairs, 1471 based on Foata normal form. 6/6169 useless extension candidates. Maximal degree in co-relation 34205. Up to 5425 conditions per place. [2024-06-28 01:47:32,393 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 297 selfloop transitions, 112 changer transitions 0/416 dead transitions. [2024-06-28 01:47:32,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 416 transitions, 6367 flow [2024-06-28 01:47:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-28 01:47:32,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-28 01:47:32,394 INFO L175 Difference]: Start difference. First operand has 386 places, 382 transitions, 5255 flow. Second operand 11 states and 179 transitions. [2024-06-28 01:47:32,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 416 transitions, 6367 flow [2024-06-28 01:47:34,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 416 transitions, 6071 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 01:47:34,138 INFO L231 Difference]: Finished difference. Result has 388 places, 383 transitions, 5297 flow [2024-06-28 01:47:34,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4959, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5297, PETRI_PLACES=388, PETRI_TRANSITIONS=383} [2024-06-28 01:47:34,138 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-28 01:47:34,138 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 383 transitions, 5297 flow [2024-06-28 01:47:34,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:34,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:34,138 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 01:47:34,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 01:47:34,138 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 01:47:34,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:34,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1219607708, now seen corresponding path program 17 times [2024-06-28 01:47:34,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:34,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916875410] [2024-06-28 01:47:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:34,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:35,095 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 01:47:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:35,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916875410] [2024-06-28 01:47:35,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916875410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:35,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:35,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454416988] [2024-06-28 01:47:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:35,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:35,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:35,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:35,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 383 transitions, 5297 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:35,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:35,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:35,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:36,716 INFO L124 PetriNetUnfolderBase]: 3393/6288 cut-off events. [2024-06-28 01:47:36,717 INFO L125 PetriNetUnfolderBase]: For 201810/201810 co-relation queries the response was YES. [2024-06-28 01:47:36,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33445 conditions, 6288 events. 3393/6288 cut-off events. For 201810/201810 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 47859 event pairs, 1452 based on Foata normal form. 6/6154 useless extension candidates. Maximal degree in co-relation 33255. Up to 5185 conditions per place. [2024-06-28 01:47:36,798 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 289 selfloop transitions, 126 changer transitions 0/422 dead transitions. [2024-06-28 01:47:36,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 422 transitions, 6344 flow [2024-06-28 01:47:36,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 209 transitions. [2024-06-28 01:47:36,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43451143451143454 [2024-06-28 01:47:36,799 INFO L175 Difference]: Start difference. First operand has 388 places, 383 transitions, 5297 flow. Second operand 13 states and 209 transitions. [2024-06-28 01:47:36,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 422 transitions, 6344 flow [2024-06-28 01:47:38,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 422 transitions, 5974 flow, removed 80 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:38,255 INFO L231 Difference]: Finished difference. Result has 393 places, 383 transitions, 5183 flow [2024-06-28 01:47:38,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4927, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5183, PETRI_PLACES=393, PETRI_TRANSITIONS=383} [2024-06-28 01:47:38,255 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-28 01:47:38,255 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 383 transitions, 5183 flow [2024-06-28 01:47:38,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:38,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:38,256 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 01:47:38,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 01:47:38,256 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 01:47:38,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:38,256 INFO L85 PathProgramCache]: Analyzing trace with hash 900255552, now seen corresponding path program 18 times [2024-06-28 01:47:38,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:38,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250567944] [2024-06-28 01:47:38,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:38,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:39,305 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 01:47:39,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:39,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250567944] [2024-06-28 01:47:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250567944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:39,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:39,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739097445] [2024-06-28 01:47:39,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:39,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:39,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 383 transitions, 5183 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:39,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:39,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:39,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:41,134 INFO L124 PetriNetUnfolderBase]: 3429/6360 cut-off events. [2024-06-28 01:47:41,134 INFO L125 PetriNetUnfolderBase]: For 200940/200940 co-relation queries the response was YES. [2024-06-28 01:47:41,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33627 conditions, 6360 events. 3429/6360 cut-off events. For 200940/200940 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 48573 event pairs, 1532 based on Foata normal form. 6/6226 useless extension candidates. Maximal degree in co-relation 33436. Up to 5520 conditions per place. [2024-06-28 01:47:41,212 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 312 selfloop transitions, 97 changer transitions 0/416 dead transitions. [2024-06-28 01:47:41,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 416 transitions, 6293 flow [2024-06-28 01:47:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:41,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:41,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:47:41,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:47:41,214 INFO L175 Difference]: Start difference. First operand has 393 places, 383 transitions, 5183 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:47:41,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 416 transitions, 6293 flow [2024-06-28 01:47:42,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 416 transitions, 6014 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 01:47:42,485 INFO L231 Difference]: Finished difference. Result has 392 places, 384 transitions, 5214 flow [2024-06-28 01:47:42,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4904, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5214, PETRI_PLACES=392, PETRI_TRANSITIONS=384} [2024-06-28 01:47:42,486 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-28 01:47:42,486 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 384 transitions, 5214 flow [2024-06-28 01:47:42,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:42,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:42,486 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 01:47:42,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 01:47:42,487 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 01:47:42,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:42,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1581346, now seen corresponding path program 19 times [2024-06-28 01:47:42,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:42,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611209090] [2024-06-28 01:47:42,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:42,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:43,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611209090] [2024-06-28 01:47:43,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611209090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:43,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:43,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:43,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802046659] [2024-06-28 01:47:43,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:43,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:43,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:43,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:43,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:43,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:43,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 384 transitions, 5214 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:43,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:43,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:43,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:45,038 INFO L124 PetriNetUnfolderBase]: 3465/6432 cut-off events. [2024-06-28 01:47:45,038 INFO L125 PetriNetUnfolderBase]: For 208585/208585 co-relation queries the response was YES. [2024-06-28 01:47:45,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33932 conditions, 6432 events. 3465/6432 cut-off events. For 208585/208585 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 49306 event pairs, 1577 based on Foata normal form. 6/6297 useless extension candidates. Maximal degree in co-relation 33740. Up to 5636 conditions per place. [2024-06-28 01:47:45,145 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 318 selfloop transitions, 91 changer transitions 0/416 dead transitions. [2024-06-28 01:47:45,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 416 transitions, 6282 flow [2024-06-28 01:47:45,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:45,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-28 01:47:45,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-28 01:47:45,146 INFO L175 Difference]: Start difference. First operand has 392 places, 384 transitions, 5214 flow. Second operand 11 states and 176 transitions. [2024-06-28 01:47:45,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 416 transitions, 6282 flow [2024-06-28 01:47:46,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 416 transitions, 6003 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:46,699 INFO L231 Difference]: Finished difference. Result has 395 places, 385 transitions, 5203 flow [2024-06-28 01:47:46,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4935, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5203, PETRI_PLACES=395, PETRI_TRANSITIONS=385} [2024-06-28 01:47:46,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-28 01:47:46,700 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 385 transitions, 5203 flow [2024-06-28 01:47:46,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:46,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:46,700 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 01:47:46,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 01:47:46,700 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 01:47:46,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1772700, now seen corresponding path program 20 times [2024-06-28 01:47:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916269362] [2024-06-28 01:47:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:47,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:47,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:47,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916269362] [2024-06-28 01:47:47,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916269362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:47,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:47,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:47,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406131168] [2024-06-28 01:47:47,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:47,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:47,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:47,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:47,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:47,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:47,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 385 transitions, 5203 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:47,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:47,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:47,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:49,161 INFO L124 PetriNetUnfolderBase]: 3458/6419 cut-off events. [2024-06-28 01:47:49,161 INFO L125 PetriNetUnfolderBase]: For 154294/154294 co-relation queries the response was YES. [2024-06-28 01:47:49,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32840 conditions, 6419 events. 3458/6419 cut-off events. For 154294/154294 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 49148 event pairs, 1531 based on Foata normal form. 6/6285 useless extension candidates. Maximal degree in co-relation 32647. Up to 5316 conditions per place. [2024-06-28 01:47:49,255 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 310 selfloop transitions, 103 changer transitions 0/420 dead transitions. [2024-06-28 01:47:49,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 420 transitions, 6225 flow [2024-06-28 01:47:49,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:49,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-28 01:47:49,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-28 01:47:49,257 INFO L175 Difference]: Start difference. First operand has 395 places, 385 transitions, 5203 flow. Second operand 11 states and 183 transitions. [2024-06-28 01:47:49,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 420 transitions, 6225 flow [2024-06-28 01:47:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 420 transitions, 5915 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-28 01:47:50,390 INFO L231 Difference]: Finished difference. Result has 398 places, 385 transitions, 5103 flow [2024-06-28 01:47:50,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4893, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5103, PETRI_PLACES=398, PETRI_TRANSITIONS=385} [2024-06-28 01:47:50,391 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-28 01:47:50,391 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 385 transitions, 5103 flow [2024-06-28 01:47:50,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:50,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:50,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 01:47:50,391 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 01:47:50,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash -258475020, now seen corresponding path program 21 times [2024-06-28 01:47:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:50,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747171281] [2024-06-28 01:47:50,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:50,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:51,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:51,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747171281] [2024-06-28 01:47:51,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747171281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:51,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:51,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:51,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016580419] [2024-06-28 01:47:51,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:51,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:51,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:51,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:51,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:51,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-28 01:47:51,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 385 transitions, 5103 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:51,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:51,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-28 01:47:51,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:52,972 INFO L124 PetriNetUnfolderBase]: 3458/6419 cut-off events. [2024-06-28 01:47:52,972 INFO L125 PetriNetUnfolderBase]: For 107060/107060 co-relation queries the response was YES. [2024-06-28 01:47:53,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32101 conditions, 6419 events. 3458/6419 cut-off events. For 107060/107060 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 49222 event pairs, 1549 based on Foata normal form. 6/6286 useless extension candidates. Maximal degree in co-relation 31907. Up to 5561 conditions per place. [2024-06-28 01:47:53,064 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 315 selfloop transitions, 96 changer transitions 0/418 dead transitions. [2024-06-28 01:47:53,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 418 transitions, 5965 flow [2024-06-28 01:47:53,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:47:53,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:47:53,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-28 01:47:53,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-28 01:47:53,065 INFO L175 Difference]: Start difference. First operand has 398 places, 385 transitions, 5103 flow. Second operand 11 states and 178 transitions. [2024-06-28 01:47:53,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 418 transitions, 5965 flow [2024-06-28 01:47:53,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 418 transitions, 5226 flow, removed 73 selfloop flow, removed 102 redundant places. [2024-06-28 01:47:53,524 INFO L231 Difference]: Finished difference. Result has 306 places, 385 transitions, 4414 flow [2024-06-28 01:47:53,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4136, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4414, PETRI_PLACES=306, PETRI_TRANSITIONS=385} [2024-06-28 01:47:53,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 265 predicate places. [2024-06-28 01:47:53,532 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 385 transitions, 4414 flow [2024-06-28 01:47:53,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:53,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:53,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 01:47:53,532 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:53,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:53,533 INFO L85 PathProgramCache]: Analyzing trace with hash 646965936, now seen corresponding path program 1 times [2024-06-28 01:47:53,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:53,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942951082] [2024-06-28 01:47:53,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:53,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:53,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942951082] [2024-06-28 01:47:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942951082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:47:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597042306] [2024-06-28 01:47:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:53,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:47:53,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:47:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:47:53,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-28 01:47:53,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 385 transitions, 4414 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:53,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:53,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-28 01:47:53,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:54,224 INFO L124 PetriNetUnfolderBase]: 1992/4371 cut-off events. [2024-06-28 01:47:54,224 INFO L125 PetriNetUnfolderBase]: For 17761/17924 co-relation queries the response was YES. [2024-06-28 01:47:54,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18160 conditions, 4371 events. 1992/4371 cut-off events. For 17761/17924 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36865 event pairs, 418 based on Foata normal form. 366/4527 useless extension candidates. Maximal degree in co-relation 18058. Up to 1514 conditions per place. [2024-06-28 01:47:54,264 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 128 selfloop transitions, 70 changer transitions 0/311 dead transitions. [2024-06-28 01:47:54,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 311 transitions, 4039 flow [2024-06-28 01:47:54,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:47:54,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:47:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-28 01:47:54,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6270270270270271 [2024-06-28 01:47:54,265 INFO L175 Difference]: Start difference. First operand has 306 places, 385 transitions, 4414 flow. Second operand 5 states and 116 transitions. [2024-06-28 01:47:54,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 311 transitions, 4039 flow [2024-06-28 01:47:54,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 311 transitions, 2663 flow, removed 98 selfloop flow, removed 62 redundant places. [2024-06-28 01:47:54,349 INFO L231 Difference]: Finished difference. Result has 250 places, 302 transitions, 2462 flow [2024-06-28 01:47:54,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2462, PETRI_PLACES=250, PETRI_TRANSITIONS=302} [2024-06-28 01:47:54,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-28 01:47:54,350 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 302 transitions, 2462 flow [2024-06-28 01:47:54,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:54,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:54,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:54,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 01:47:54,350 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:54,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:54,350 INFO L85 PathProgramCache]: Analyzing trace with hash 535522941, now seen corresponding path program 1 times [2024-06-28 01:47:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824720038] [2024-06-28 01:47:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:54,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:54,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824720038] [2024-06-28 01:47:54,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824720038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:54,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:54,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 01:47:54,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619847838] [2024-06-28 01:47:54,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:54,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:47:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:54,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:47:54,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:47:54,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 01:47:54,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 302 transitions, 2462 flow. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:54,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:54,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 01:47:54,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:54,976 INFO L124 PetriNetUnfolderBase]: 1531/3792 cut-off events. [2024-06-28 01:47:54,976 INFO L125 PetriNetUnfolderBase]: For 7297/7318 co-relation queries the response was YES. [2024-06-28 01:47:54,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12566 conditions, 3792 events. 1531/3792 cut-off events. For 7297/7318 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 34261 event pairs, 635 based on Foata normal form. 17/3535 useless extension candidates. Maximal degree in co-relation 12514. Up to 1405 conditions per place. [2024-06-28 01:47:54,994 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 58 selfloop transitions, 33 changer transitions 183/329 dead transitions. [2024-06-28 01:47:54,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 329 transitions, 3023 flow [2024-06-28 01:47:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:47:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:47:54,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2024-06-28 01:47:54,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900900900900901 [2024-06-28 01:47:54,995 INFO L175 Difference]: Start difference. First operand has 250 places, 302 transitions, 2462 flow. Second operand 6 states and 131 transitions. [2024-06-28 01:47:54,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 329 transitions, 3023 flow [2024-06-28 01:47:55,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 329 transitions, 2948 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 01:47:55,028 INFO L231 Difference]: Finished difference. Result has 257 places, 142 transitions, 1068 flow [2024-06-28 01:47:55,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=257, PETRI_TRANSITIONS=142} [2024-06-28 01:47:55,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-28 01:47:55,028 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 142 transitions, 1068 flow [2024-06-28 01:47:55,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:55,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:55,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:55,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 01:47:55,029 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:55,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:55,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1844052519, now seen corresponding path program 2 times [2024-06-28 01:47:55,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:55,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194175896] [2024-06-28 01:47:55,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:55,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:55,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:55,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194175896] [2024-06-28 01:47:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194175896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:55,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:55,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:47:55,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248629603] [2024-06-28 01:47:55,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:55,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:47:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:47:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:47:55,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-06-28 01:47:55,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 142 transitions, 1068 flow. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:55,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:55,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-06-28 01:47:55,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:55,538 INFO L124 PetriNetUnfolderBase]: 676/1736 cut-off events. [2024-06-28 01:47:55,538 INFO L125 PetriNetUnfolderBase]: For 2314/2314 co-relation queries the response was YES. [2024-06-28 01:47:55,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5474 conditions, 1736 events. 676/1736 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 14109 event pairs, 268 based on Foata normal form. 4/1592 useless extension candidates. Maximal degree in co-relation 5430. Up to 875 conditions per place. [2024-06-28 01:47:55,545 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 25 selfloop transitions, 7 changer transitions 102/159 dead transitions. [2024-06-28 01:47:55,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 159 transitions, 1330 flow [2024-06-28 01:47:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 01:47:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 01:47:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-28 01:47:55,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304054054054054 [2024-06-28 01:47:55,546 INFO L175 Difference]: Start difference. First operand has 257 places, 142 transitions, 1068 flow. Second operand 8 states and 157 transitions. [2024-06-28 01:47:55,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 159 transitions, 1330 flow [2024-06-28 01:47:55,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 159 transitions, 1217 flow, removed 12 selfloop flow, removed 23 redundant places. [2024-06-28 01:47:55,553 INFO L231 Difference]: Finished difference. Result has 153 places, 54 transitions, 296 flow [2024-06-28 01:47:55,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=296, PETRI_PLACES=153, PETRI_TRANSITIONS=54} [2024-06-28 01:47:55,553 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-28 01:47:55,554 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 54 transitions, 296 flow [2024-06-28 01:47:55,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:55,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:55,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:55,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 01:47:55,554 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:55,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash 425063353, now seen corresponding path program 3 times [2024-06-28 01:47:55,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:55,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36465575] [2024-06-28 01:47:55,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:55,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:56,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36465575] [2024-06-28 01:47:56,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36465575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:56,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:56,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-06-28 01:47:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443318599] [2024-06-28 01:47:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 01:47:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 01:47:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 01:47:56,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-28 01:47:56,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 54 transitions, 296 flow. Second operand has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:56,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:56,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-28 01:47:56,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:56,551 INFO L124 PetriNetUnfolderBase]: 366/919 cut-off events. [2024-06-28 01:47:56,552 INFO L125 PetriNetUnfolderBase]: For 637/639 co-relation queries the response was YES. [2024-06-28 01:47:56,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2581 conditions, 919 events. 366/919 cut-off events. For 637/639 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6027 event pairs, 119 based on Foata normal form. 6/859 useless extension candidates. Maximal degree in co-relation 2543. Up to 286 conditions per place. [2024-06-28 01:47:56,556 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 45 selfloop transitions, 17 changer transitions 14/93 dead transitions. [2024-06-28 01:47:56,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 93 transitions, 563 flow [2024-06-28 01:47:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 01:47:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 01:47:56,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 181 transitions. [2024-06-28 01:47:56,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3762993762993763 [2024-06-28 01:47:56,557 INFO L175 Difference]: Start difference. First operand has 153 places, 54 transitions, 296 flow. Second operand 13 states and 181 transitions. [2024-06-28 01:47:56,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 93 transitions, 563 flow [2024-06-28 01:47:56,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 93 transitions, 497 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 01:47:56,559 INFO L231 Difference]: Finished difference. Result has 101 places, 56 transitions, 307 flow [2024-06-28 01:47:56,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=307, PETRI_PLACES=101, PETRI_TRANSITIONS=56} [2024-06-28 01:47:56,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-28 01:47:56,563 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 56 transitions, 307 flow [2024-06-28 01:47:56,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.615384615384615) internal successors, (138), 13 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:56,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:56,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:56,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 01:47:56,564 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:56,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:56,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1868328381, now seen corresponding path program 4 times [2024-06-28 01:47:56,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:56,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215946964] [2024-06-28 01:47:56,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:56,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:47:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:47:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:47:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215946964] [2024-06-28 01:47:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215946964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:47:57,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:47:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 01:47:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626961274] [2024-06-28 01:47:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:47:57,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 01:47:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:47:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 01:47:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 01:47:57,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 37 [2024-06-28 01:47:57,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 56 transitions, 307 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:57,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:47:57,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 37 [2024-06-28 01:47:57,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:47:57,279 INFO L124 PetriNetUnfolderBase]: 291/765 cut-off events. [2024-06-28 01:47:57,279 INFO L125 PetriNetUnfolderBase]: For 613/614 co-relation queries the response was YES. [2024-06-28 01:47:57,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 765 events. 291/765 cut-off events. For 613/614 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4817 event pairs, 75 based on Foata normal form. 9/724 useless extension candidates. Maximal degree in co-relation 2229. Up to 329 conditions per place. [2024-06-28 01:47:57,282 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 22 selfloop transitions, 5 changer transitions 30/73 dead transitions. [2024-06-28 01:47:57,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 73 transitions, 461 flow [2024-06-28 01:47:57,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:47:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:47:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-28 01:47:57,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255255255255256 [2024-06-28 01:47:57,283 INFO L175 Difference]: Start difference. First operand has 101 places, 56 transitions, 307 flow. Second operand 9 states and 175 transitions. [2024-06-28 01:47:57,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 73 transitions, 461 flow [2024-06-28 01:47:57,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 73 transitions, 421 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 01:47:57,286 INFO L231 Difference]: Finished difference. Result has 98 places, 37 transitions, 163 flow [2024-06-28 01:47:57,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=98, PETRI_TRANSITIONS=37} [2024-06-28 01:47:57,286 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-28 01:47:57,286 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 37 transitions, 163 flow [2024-06-28 01:47:57,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 01:47:57,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:47:57,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 01:47:57,287 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-28 01:47:57,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:47:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash 887214669, now seen corresponding path program 5 times [2024-06-28 01:47:57,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:47:57,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132713395] [2024-06-28 01:47:57,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:47:57,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:47:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:47:57,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-28 01:47:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-28 01:47:57,372 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-28 01:47:57,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-28 01:47:57,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-28 01:47:57,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-28 01:47:57,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-28 01:47:57,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-28 01:47:57,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-28 01:47:57,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-28 01:47:57,376 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-28 01:47:57,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 01:47:57,377 INFO L445 BasicCegarLoop]: Path program histogram: [24, 21, 14, 11, 9, 7, 7, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:47:57,381 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 01:47:57,381 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 01:47:57,447 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 01:47:57,448 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 01:47:57,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 01:47:57 BasicIcfg [2024-06-28 01:47:57,448 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 01:47:57,449 INFO L158 Benchmark]: Toolchain (without parser) took 300292.83ms. Allocated memory was 165.7MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 89.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-28 01:47:57,449 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:47:57,449 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 01:47:57,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 569.62ms. Allocated memory is still 165.7MB. Free memory was 89.4MB in the beginning and 123.6MB in the end (delta: -34.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-28 01:47:57,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.18ms. Allocated memory is still 165.7MB. Free memory was 123.6MB in the beginning and 120.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 01:47:57,450 INFO L158 Benchmark]: Boogie Preprocessor took 71.96ms. Allocated memory is still 165.7MB. Free memory was 120.7MB in the beginning and 117.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 01:47:57,450 INFO L158 Benchmark]: RCFGBuilder took 570.88ms. Allocated memory is still 165.7MB. Free memory was 117.4MB in the beginning and 69.8MB in the end (delta: 47.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2024-06-28 01:47:57,450 INFO L158 Benchmark]: TraceAbstraction took 298999.85ms. Allocated memory was 165.7MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 68.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-28 01:47:57,451 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 165.7MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 569.62ms. Allocated memory is still 165.7MB. Free memory was 89.4MB in the beginning and 123.6MB in the end (delta: -34.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.18ms. Allocated memory is still 165.7MB. Free memory was 123.6MB in the beginning and 120.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.96ms. Allocated memory is still 165.7MB. Free memory was 120.7MB in the beginning and 117.4MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 570.88ms. Allocated memory is still 165.7MB. Free memory was 117.4MB in the beginning and 69.8MB in the end (delta: 47.6MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * TraceAbstraction took 298999.85ms. Allocated memory was 165.7MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 68.6MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff1_thd0; [L723] 0 _Bool x$r_buff1_thd1; [L724] 0 _Bool x$r_buff1_thd2; [L725] 0 _Bool x$read_delayed; [L726] 0 int *x$read_delayed_var; [L727] 0 int x$w_buff0; [L728] 0 _Bool x$w_buff0_used; [L729] 0 int x$w_buff1; [L730] 0 _Bool x$w_buff1_used; [L732] 0 int y = 0; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L800] 0 pthread_t t1587; [L801] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1587=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L801] FCALL, FORK 0 pthread_create(&t1587, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1587=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L802] 0 pthread_t t1588; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1587=-1, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L803] 0 //@ assert (((((((((((((((!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((x$w_buff0 == 0) || (x$w_buff0 == 2))) && ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2))) && (((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)) || (__unbuffered_p1_EBX == 2))) && (((x == 0) || (x == 1)) || (x == 2))) && (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2))) && (((y == 0) || (y == 1)) || (y == 2))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (((y == 0) || (y == 1)) || (y == 2)))) && (!multithreaded || (((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)) || (__unbuffered_p1_EBX == 2)))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2)))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))); [L803] FCALL, FORK 0 pthread_create(&t1588, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1587=-1, t1588=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L804] 0 //@ assert (((((((((((((((!multithreaded || ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && (!multithreaded || ((x$w_buff0 == 0) || (x$w_buff0 == 2)))) && (!multithreaded || (x$r_buff1_thd0 == (_Bool) 0))) && (!multithreaded || (x$read_delayed_var == 0))) && (!multithreaded || (x$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (((((((((((((((0 <= __unbuffered_cnt) && (x$flush_delayed == (_Bool) 0)) && (x$r_buff0_thd0 == (_Bool) 0)) && (x$r_buff0_thd1 == (_Bool) 0)) && (x$r_buff1_thd0 == (_Bool) 0)) && (x$r_buff1_thd1 == (_Bool) 0)) && (x$read_delayed == (_Bool) 0)) && (x$read_delayed_var == 0)) && ((x$w_buff0 == 0) || (x$w_buff0 == 2))) && ((x$w_buff1 == 0) || (x$w_buff1 == 2))) && (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2))) && (((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)) || (__unbuffered_p1_EBX == 2))) && (((x == 0) || (x == 1)) || (x == 2))) && (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2))) && (((y == 0) || (y == 1)) || (y == 2))))) && (!multithreaded || (x$read_delayed == (_Bool) 0))) && (!multithreaded || (((y == 0) || (y == 1)) || (y == 2)))) && (!multithreaded || (((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)) || (__unbuffered_p1_EBX == 2)))) && (!multithreaded || (((x == 0) || (x == 1)) || (x == 2)))) && (!multithreaded || (((x$mem_tmp == 0) || (x$mem_tmp == 1)) || (x$mem_tmp == 2)))) && (!multithreaded || (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2)))) && (!multithreaded || (x$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (x$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (0 <= __unbuffered_cnt))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1587=-1, t1588=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L758] 2 x$w_buff1 = x$w_buff0 [L759] 2 x$w_buff0 = 2 [L760] 2 x$w_buff1_used = x$w_buff0_used [L761] 2 x$w_buff0_used = (_Bool)1 [L762] CALL 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L762] RET 2 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L763] 2 x$r_buff1_thd0 = x$r_buff0_thd0 [L764] 2 x$r_buff1_thd1 = x$r_buff0_thd1 [L765] 2 x$r_buff1_thd2 = x$r_buff0_thd2 [L766] 2 x$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0] [L769] 2 y = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L772] 2 __unbuffered_p1_EAX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L775] 2 __unbuffered_p1_EBX = y VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=1] [L738] 1 y = 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=2] [L741] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L744] 1 x = x$w_buff0_used && x$r_buff0_thd1 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd1 ? x$w_buff1 : x) [L745] 1 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$w_buff0_used [L746] 1 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$w_buff1_used [L747] 1 x$r_buff0_thd1 = x$w_buff0_used && x$r_buff0_thd1 ? (_Bool)0 : x$r_buff0_thd1 [L748] 1 x$r_buff1_thd1 = x$w_buff0_used && x$r_buff0_thd1 || x$w_buff1_used && x$r_buff1_thd1 ? (_Bool)0 : x$r_buff1_thd1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=1, y=2] [L778] 2 x = x$w_buff0_used && x$r_buff0_thd2 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd2 ? x$w_buff1 : x) [L779] 2 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$w_buff0_used [L780] 2 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$w_buff1_used [L781] 2 x$r_buff0_thd2 = x$w_buff0_used && x$r_buff0_thd2 ? (_Bool)0 : x$r_buff0_thd2 [L782] 2 x$r_buff1_thd2 = x$w_buff0_used && x$r_buff0_thd2 || x$w_buff1_used && x$r_buff1_thd2 ? (_Bool)0 : x$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L785] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L805] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1587=-1, t1588=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L807] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L807] RET 0 assume_abort_if_not(main$tmp_guard0) [L809] 0 x = x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : (x$w_buff1_used && x$r_buff1_thd0 ? x$w_buff1 : x) [L810] 0 x$w_buff0_used = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used [L811] 0 x$w_buff1_used = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$w_buff1_used [L812] 0 x$r_buff0_thd0 = x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0 [L813] 0 x$r_buff1_thd0 = x$w_buff0_used && x$r_buff0_thd0 || x$w_buff1_used && x$r_buff1_thd0 ? (_Bool)0 : x$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1587=-1, t1588=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L816] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L817] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L818] 0 x$flush_delayed = weak$$choice2 [L819] 0 x$mem_tmp = x [L820] 0 x = !x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff1) [L821] 0 x$w_buff0 = weak$$choice2 ? x$w_buff0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff0 : x$w_buff0)) [L822] 0 x$w_buff1 = weak$$choice2 ? x$w_buff1 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1 : (x$w_buff0_used && x$r_buff0_thd0 ? x$w_buff1 : x$w_buff1)) [L823] 0 x$w_buff0_used = weak$$choice2 ? x$w_buff0_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff0_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$w_buff0_used)) [L824] 0 x$w_buff1_used = weak$$choice2 ? x$w_buff1_used : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$w_buff1_used : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L825] 0 x$r_buff0_thd0 = weak$$choice2 ? x$r_buff0_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff0_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : x$r_buff0_thd0)) [L826] 0 x$r_buff1_thd0 = weak$$choice2 ? x$r_buff1_thd0 : (!x$w_buff0_used || !x$r_buff0_thd0 && !x$w_buff1_used || !x$r_buff0_thd0 && !x$r_buff1_thd0 ? x$r_buff1_thd0 : (x$w_buff0_used && x$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L827] 0 main$tmp_guard1 = !(x == 2 && y == 2 && __unbuffered_p1_EAX == 1 && __unbuffered_p1_EBX == 1) [L828] 0 x = x$flush_delayed ? x$mem_tmp : x [L829] 0 x$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1587=-1, t1588=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L831] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=1, __unbuffered_p1_EBX=1, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=2, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=2, y=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 804]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 803]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 801]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 56 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 298.9s, OverallIterations: 148, TraceHistogramMax: 1, PathProgramHistogramMax: 24, EmptinessCheckTime: 0.0s, AutomataDifference: 204.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9600 SdHoareTripleChecker+Valid, 36.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8281 mSDsluCounter, 8712 SdHoareTripleChecker+Invalid, 31.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7671 mSDsCounter, 2302 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57449 IncrementalHoareTripleChecker+Invalid, 59751 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2302 mSolverCounterUnsat, 1041 mSDtfsCounter, 57449 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1522 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1504 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3335 ImplicationChecksByTransitivity, 37.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5478occurred in iteration=42, InterpolantAutomatonStates: 1357, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 92.4s InterpolantComputationTime, 2463 NumberOfCodeBlocks, 2463 NumberOfCodeBlocksAsserted, 148 NumberOfCheckSat, 2289 ConstructedInterpolants, 0 QuantifiedInterpolants, 98525 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 147 InterpolantComputations, 147 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-28 01:47:57,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE