./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_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-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:35:52,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:35:52,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:35:52,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:35:52,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:35:52,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:35:52,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:35:52,621 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:35:52,621 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:35:52,624 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:35:52,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:35:52,625 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:35:52,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:35:52,626 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:35:52,626 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:35:52,627 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:35:52,627 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:35:52,627 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:35:52,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:35:52,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:35:52,628 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:35:52,628 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:35:52,628 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:35:52,628 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:35:52,628 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:35:52,629 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:35:52,629 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:35:52,629 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:35:52,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:35:52,630 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:35:52,630 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:35:52,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:35:52,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:35:52,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:35:52,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:35:52,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:35:52,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:35:52,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:35:52,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:35:52,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:35:52,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:35:52,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:35:52,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:35:52,634 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:35:52,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:35:52,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:35:52,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:35:52,847 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:35:52,847 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:35:52,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:35:53,972 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:35:54,158 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:35:54,158 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:35:54,180 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909862315/2b1ce887a1ec4868889fb0c30dd18062/FLAG9eec22e63 [2024-05-12 13:35:54,190 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/909862315/2b1ce887a1ec4868889fb0c30dd18062 [2024-05-12 13:35:54,192 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:35:54,192 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:35:54,193 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-05-12 13:35:54,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:35:54,389 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:35:54,391 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:35:54,391 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:35:54,394 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:35:54,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:35:54" (1/2) ... [2024-05-12 13:35:54,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61806b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:35:54, skipping insertion in model container [2024-05-12 13:35:54,396 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:35:54" (1/2) ... [2024-05-12 13:35:54,399 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5b8ba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:35:54, skipping insertion in model container [2024-05-12 13:35:54,399 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:35:54" (2/2) ... [2024-05-12 13:35:54,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61806b94 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54, skipping insertion in model container [2024-05-12 13:35:54,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:35:54" (2/2) ... [2024-05-12 13:35:54,400 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:35:54,471 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:35:54,472 INFO L97 edCorrectnessWitness]: Location invariant before [L823-L823] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-05-12 13:35:54,472 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-05-12 13:35:54,472 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || z$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= z$w_buff0 && z$w_buff0 <= 2) && z$w_buff0 <= 127) && z$w_buff0 % 2 == 0) && (z$w_buff0 == 0 || z$w_buff0 == 2)))) && (! multithreaded || (((0 <= z$mem_tmp && z$mem_tmp <= 2) && z$mem_tmp <= 127) && ((z$mem_tmp == 0 || z$mem_tmp == 1) || z$mem_tmp == 2)))) && (! multithreaded || z$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || (((0 <= z && z <= 2) && z <= 127) && ((z == 0 || z == 1) || z == 2)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || z$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((((0 <= z$w_buff1 && z$w_buff1 <= 2) && z$w_buff1 <= 127) && z$w_buff1 % 2 == 0) && (z$w_buff1 == 0 || z$w_buff1 == 2))) [2024-05-12 13:35:54,473 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:35:54,473 INFO L106 edCorrectnessWitness]: ghost_update [L821-L821] multithreaded = 1; [2024-05-12 13:35:54,509 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:35:54,631 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2024-05-12 13:35:54,781 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:35:54,793 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:35:54,833 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:35:54,904 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:35:54,929 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:35:54,930 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54 WrapperNode [2024-05-12 13:35:54,930 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:35:54,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:35:54,931 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:35:54,931 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:35:54,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:54,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,007 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-05-12 13:35:55,008 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:35:55,009 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:35:55,009 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:35:55,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:35:55,018 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,034 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,054 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:35:55,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,066 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,078 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,082 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:35:55,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:35:55,088 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:35:55,088 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:35:55,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (1/1) ... [2024-05-12 13:35:55,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:35:55,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:35:55,114 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) [2024-05-12 13:35:55,128 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 [2024-05-12 13:35:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:35:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:35:55,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:35:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:35:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:35:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:35:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:35:55,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:35:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:35:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:35:55,169 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:35:55,169 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:35:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:35:55,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:35:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:35:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:35:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:35:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:35:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:35:55,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:35:55,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:35:55,173 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:35:55,271 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:35:55,272 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:35:55,567 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:35:55,567 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:35:55,671 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:35:55,672 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:35:55,672 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:35:55 BoogieIcfgContainer [2024-05-12 13:35:55,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:35:55,674 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:35:55,674 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:35:55,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:35:55,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:35:54" (1/4) ... [2024-05-12 13:35:55,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30629359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:35:55, skipping insertion in model container [2024-05-12 13:35:55,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:35:54" (2/4) ... [2024-05-12 13:35:55,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30629359 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:35:55, skipping insertion in model container [2024-05-12 13:35:55,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:35:54" (3/4) ... [2024-05-12 13:35:55,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30629359 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:35:55, skipping insertion in model container [2024-05-12 13:35:55,677 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:35:55" (4/4) ... [2024-05-12 13:35:55,678 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:35:55,691 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:35:55,691 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:35:55,691 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:35:55,735 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:35:55,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:35:55,809 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:35:55,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:35:55,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-05-12 13:35:55,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:35:55,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:35:55,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:35:55,825 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2da277ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:35:55,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:35:55,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:35:55,829 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:35:55,829 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:35:55,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:55,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:35:55,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:55,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:55,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1676385281, now seen corresponding path program 1 times [2024-05-12 13:35:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:55,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590061404] [2024-05-12 13:35:55,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:55,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:56,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:56,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:56,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590061404] [2024-05-12 13:35:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590061404] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:56,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:35:56,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272247880] [2024-05-12 13:35:56,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:56,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:35:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:35:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:35:56,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:35:56,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-05-12 13:35:56,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:56,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:35:56,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:57,575 INFO L124 PetriNetUnfolderBase]: 3513/5613 cut-off events. [2024-05-12 13:35:57,576 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-05-12 13:35:57,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10785 conditions, 5613 events. 3513/5613 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 34518 event pairs, 2751 based on Foata normal form. 176/5346 useless extension candidates. Maximal degree in co-relation 10770. Up to 5066 conditions per place. [2024-05-12 13:35:57,606 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 44 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:35:57,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 59 transitions, 231 flow [2024-05-12 13:35:57,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:35:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:35:57,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-05-12 13:35:57,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6595744680851063 [2024-05-12 13:35:57,617 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 93 transitions. [2024-05-12 13:35:57,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 59 transitions, 231 flow [2024-05-12 13:35:57,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 226 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:57,624 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:35:57,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-05-12 13:35:57,628 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:35:57,629 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:35:57,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 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) [2024-05-12 13:35:57,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:57,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:35:57,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:35:57,630 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:57,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1676384365, now seen corresponding path program 1 times [2024-05-12 13:35:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:57,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085506134] [2024-05-12 13:35:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:57,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:57,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:57,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085506134] [2024-05-12 13:35:57,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085506134] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:57,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:57,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:35:57,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535539374] [2024-05-12 13:35:57,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:57,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:35:57,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:57,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:35:57,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:35:57,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 47 [2024-05-12 13:35:57,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:57,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:57,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 47 [2024-05-12 13:35:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:57,911 INFO L124 PetriNetUnfolderBase]: 840/1596 cut-off events. [2024-05-12 13:35:57,912 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2024-05-12 13:35:57,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3134 conditions, 1596 events. 840/1596 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10512 event pairs, 417 based on Foata normal form. 0/1463 useless extension candidates. Maximal degree in co-relation 3119. Up to 1067 conditions per place. [2024-05-12 13:35:57,921 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 37 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-05-12 13:35:57,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 61 transitions, 236 flow [2024-05-12 13:35:57,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:35:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:35:57,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-05-12 13:35:57,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75177304964539 [2024-05-12 13:35:57,923 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 106 transitions. [2024-05-12 13:35:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 61 transitions, 236 flow [2024-05-12 13:35:57,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:35:57,924 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-05-12 13:35:57,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-05-12 13:35:57,925 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:35:57,925 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-05-12 13:35:57,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:57,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:57,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:57,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:35:57,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:57,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash -393492355, now seen corresponding path program 1 times [2024-05-12 13:35:57,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:57,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86176441] [2024-05-12 13:35:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:58,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:58,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:58,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86176441] [2024-05-12 13:35:58,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86176441] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:58,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:58,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:35:58,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163511937] [2024-05-12 13:35:58,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:58,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:35:58,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:58,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:35:58,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:35:58,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-05-12 13:35:58,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:58,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:58,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-05-12 13:35:58,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:59,217 INFO L124 PetriNetUnfolderBase]: 2986/4791 cut-off events. [2024-05-12 13:35:59,218 INFO L125 PetriNetUnfolderBase]: For 1138/1145 co-relation queries the response was YES. [2024-05-12 13:35:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10330 conditions, 4791 events. 2986/4791 cut-off events. For 1138/1145 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 28442 event pairs, 1953 based on Foata normal form. 7/4643 useless extension candidates. Maximal degree in co-relation 10314. Up to 4299 conditions per place. [2024-05-12 13:35:59,235 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 52 selfloop transitions, 8 changer transitions 2/72 dead transitions. [2024-05-12 13:35:59,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 72 transitions, 320 flow [2024-05-12 13:35:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:35:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:35:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-05-12 13:35:59,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-05-12 13:35:59,237 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 114 transitions. [2024-05-12 13:35:59,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 72 transitions, 320 flow [2024-05-12 13:35:59,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:35:59,239 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 183 flow [2024-05-12 13:35:59,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=183, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:35:59,239 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-05-12 13:35:59,239 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 183 flow [2024-05-12 13:35:59,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:59,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:59,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:59,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:35:59,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:59,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash 686639808, now seen corresponding path program 1 times [2024-05-12 13:35:59,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:59,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018824548] [2024-05-12 13:35:59,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:59,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:59,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:59,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018824548] [2024-05-12 13:35:59,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018824548] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:59,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:59,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:35:59,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279391398] [2024-05-12 13:35:59,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:59,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:35:59,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:59,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:35:59,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:35:59,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:35:59,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:59,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:59,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:35:59,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:00,415 INFO L124 PetriNetUnfolderBase]: 3185/5164 cut-off events. [2024-05-12 13:36:00,415 INFO L125 PetriNetUnfolderBase]: For 2193/2205 co-relation queries the response was YES. [2024-05-12 13:36:00,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12010 conditions, 5164 events. 3185/5164 cut-off events. For 2193/2205 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 31270 event pairs, 1735 based on Foata normal form. 12/4991 useless extension candidates. Maximal degree in co-relation 11992. Up to 4558 conditions per place. [2024-05-12 13:36:00,437 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 71 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-05-12 13:36:00,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 91 transitions, 469 flow [2024-05-12 13:36:00,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:36:00,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:36:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2024-05-12 13:36:00,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-05-12 13:36:00,439 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 183 flow. Second operand 5 states and 135 transitions. [2024-05-12 13:36:00,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 91 transitions, 469 flow [2024-05-12 13:36:00,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 91 transitions, 452 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:36:00,442 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 269 flow [2024-05-12 13:36:00,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=269, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-05-12 13:36:00,442 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-05-12 13:36:00,443 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 269 flow [2024-05-12 13:36:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:00,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:00,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:00,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:36:00,443 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:00,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:00,444 INFO L85 PathProgramCache]: Analyzing trace with hash -189001476, now seen corresponding path program 1 times [2024-05-12 13:36:00,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:00,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671661207] [2024-05-12 13:36:00,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:00,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:01,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:01,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671661207] [2024-05-12 13:36:01,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671661207] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:01,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:01,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:36:01,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167164764] [2024-05-12 13:36:01,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:01,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:36:01,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:01,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:36:01,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:36:01,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:36:01,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:01,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:01,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:36:01,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:02,171 INFO L124 PetriNetUnfolderBase]: 3187/5166 cut-off events. [2024-05-12 13:36:02,171 INFO L125 PetriNetUnfolderBase]: For 3720/3744 co-relation queries the response was YES. [2024-05-12 13:36:02,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12981 conditions, 5166 events. 3187/5166 cut-off events. For 3720/3744 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 31185 event pairs, 1470 based on Foata normal form. 18/4999 useless extension candidates. Maximal degree in co-relation 12959. Up to 4538 conditions per place. [2024-05-12 13:36:02,191 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 81 selfloop transitions, 15 changer transitions 0/105 dead transitions. [2024-05-12 13:36:02,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 105 transitions, 579 flow [2024-05-12 13:36:02,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-05-12 13:36:02,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709219858156028 [2024-05-12 13:36:02,193 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 269 flow. Second operand 6 states and 161 transitions. [2024-05-12 13:36:02,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 105 transitions, 579 flow [2024-05-12 13:36:02,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 575 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:36:02,197 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 330 flow [2024-05-12 13:36:02,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2024-05-12 13:36:02,198 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-05-12 13:36:02,198 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 330 flow [2024-05-12 13:36:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:02,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:02,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:02,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:36:02,199 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:02,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1564077473, now seen corresponding path program 1 times [2024-05-12 13:36:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:02,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844032998] [2024-05-12 13:36:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:03,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:03,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:03,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844032998] [2024-05-12 13:36:03,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844032998] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:03,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:03,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:36:03,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388362757] [2024-05-12 13:36:03,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:03,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:36:03,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:03,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:36:03,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:36:03,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:36:03,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:03,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:03,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:36:03,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:03,915 INFO L124 PetriNetUnfolderBase]: 3191/5170 cut-off events. [2024-05-12 13:36:03,916 INFO L125 PetriNetUnfolderBase]: For 5592/5616 co-relation queries the response was YES. [2024-05-12 13:36:03,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14146 conditions, 5170 events. 3191/5170 cut-off events. For 5592/5616 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 31155 event pairs, 1168 based on Foata normal form. 21/5006 useless extension candidates. Maximal degree in co-relation 14121. Up to 4498 conditions per place. [2024-05-12 13:36:03,941 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 88 selfloop transitions, 18 changer transitions 0/115 dead transitions. [2024-05-12 13:36:03,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 115 transitions, 678 flow [2024-05-12 13:36:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-05-12 13:36:03,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562310030395137 [2024-05-12 13:36:03,943 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 330 flow. Second operand 7 states and 183 transitions. [2024-05-12 13:36:03,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 115 transitions, 678 flow [2024-05-12 13:36:03,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 115 transitions, 645 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:03,948 INFO L231 Difference]: Finished difference. Result has 69 places, 67 transitions, 357 flow [2024-05-12 13:36:03,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=69, PETRI_TRANSITIONS=67} [2024-05-12 13:36:03,949 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:36:03,949 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 67 transitions, 357 flow [2024-05-12 13:36:03,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:03,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:36:03,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:03,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:03,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1058873984, now seen corresponding path program 1 times [2024-05-12 13:36:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531266758] [2024-05-12 13:36:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:04,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:04,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531266758] [2024-05-12 13:36:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531266758] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:04,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:04,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:36:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039040065] [2024-05-12 13:36:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:04,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:36:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:36:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:36:04,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:04,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 67 transitions, 357 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:04,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:04,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:04,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:05,371 INFO L124 PetriNetUnfolderBase]: 4379/6946 cut-off events. [2024-05-12 13:36:05,371 INFO L125 PetriNetUnfolderBase]: For 9822/9822 co-relation queries the response was YES. [2024-05-12 13:36:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19677 conditions, 6946 events. 4379/6946 cut-off events. For 9822/9822 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 41725 event pairs, 1980 based on Foata normal form. 4/6728 useless extension candidates. Maximal degree in co-relation 19651. Up to 6208 conditions per place. [2024-05-12 13:36:05,414 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 83 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2024-05-12 13:36:05,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 685 flow [2024-05-12 13:36:05,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:36:05,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:36:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-05-12 13:36:05,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851063829787234 [2024-05-12 13:36:05,416 INFO L175 Difference]: Start difference. First operand has 69 places, 67 transitions, 357 flow. Second operand 5 states and 114 transitions. [2024-05-12 13:36:05,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 685 flow [2024-05-12 13:36:05,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 633 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:05,423 INFO L231 Difference]: Finished difference. Result has 70 places, 76 transitions, 415 flow [2024-05-12 13:36:05,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=415, PETRI_PLACES=70, PETRI_TRANSITIONS=76} [2024-05-12 13:36:05,423 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-05-12 13:36:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 76 transitions, 415 flow [2024-05-12 13:36:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:05,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:05,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:05,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:36:05,424 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:05,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:05,425 INFO L85 PathProgramCache]: Analyzing trace with hash 123258278, now seen corresponding path program 1 times [2024-05-12 13:36:05,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:05,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689460805] [2024-05-12 13:36:05,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:05,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:06,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:06,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:06,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689460805] [2024-05-12 13:36:06,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689460805] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:06,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:06,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:06,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592385222] [2024-05-12 13:36:06,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:06,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:06,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:06,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:06,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:06,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:06,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 76 transitions, 415 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:06,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:06,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:06,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:07,147 INFO L124 PetriNetUnfolderBase]: 4376/6966 cut-off events. [2024-05-12 13:36:07,147 INFO L125 PetriNetUnfolderBase]: For 14058/14201 co-relation queries the response was YES. [2024-05-12 13:36:07,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21599 conditions, 6966 events. 4376/6966 cut-off events. For 14058/14201 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 42376 event pairs, 1666 based on Foata normal form. 46/6761 useless extension candidates. Maximal degree in co-relation 21570. Up to 6107 conditions per place. [2024-05-12 13:36:07,191 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 94 selfloop transitions, 28 changer transitions 0/132 dead transitions. [2024-05-12 13:36:07,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 132 transitions, 907 flow [2024-05-12 13:36:07,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:07,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-05-12 13:36:07,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2024-05-12 13:36:07,193 INFO L175 Difference]: Start difference. First operand has 70 places, 76 transitions, 415 flow. Second operand 8 states and 179 transitions. [2024-05-12 13:36:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 132 transitions, 907 flow [2024-05-12 13:36:07,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 132 transitions, 903 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-05-12 13:36:07,203 INFO L231 Difference]: Finished difference. Result has 80 places, 92 transitions, 628 flow [2024-05-12 13:36:07,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=628, PETRI_PLACES=80, PETRI_TRANSITIONS=92} [2024-05-12 13:36:07,205 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 27 predicate places. [2024-05-12 13:36:07,205 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 92 transitions, 628 flow [2024-05-12 13:36:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:07,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:07,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:07,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:36:07,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:07,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:07,206 INFO L85 PathProgramCache]: Analyzing trace with hash 123378248, now seen corresponding path program 2 times [2024-05-12 13:36:07,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:07,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77320203] [2024-05-12 13:36:07,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:07,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77320203] [2024-05-12 13:36:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77320203] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:08,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:08,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502771166] [2024-05-12 13:36:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:08,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:08,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:08,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:08,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 92 transitions, 628 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:08,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:08,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:08,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:08,995 INFO L124 PetriNetUnfolderBase]: 4371/6958 cut-off events. [2024-05-12 13:36:08,995 INFO L125 PetriNetUnfolderBase]: For 19441/19808 co-relation queries the response was YES. [2024-05-12 13:36:09,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23253 conditions, 6958 events. 4371/6958 cut-off events. For 19441/19808 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42261 event pairs, 1654 based on Foata normal form. 123/6830 useless extension candidates. Maximal degree in co-relation 23218. Up to 6103 conditions per place. [2024-05-12 13:36:09,031 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 96 selfloop transitions, 33 changer transitions 0/139 dead transitions. [2024-05-12 13:36:09,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 139 transitions, 1079 flow [2024-05-12 13:36:09,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:36:09,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:36:09,033 INFO L175 Difference]: Start difference. First operand has 80 places, 92 transitions, 628 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:36:09,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 139 transitions, 1079 flow [2024-05-12 13:36:09,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 139 transitions, 1053 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-05-12 13:36:09,045 INFO L231 Difference]: Finished difference. Result has 85 places, 101 transitions, 777 flow [2024-05-12 13:36:09,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=602, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=777, PETRI_PLACES=85, PETRI_TRANSITIONS=101} [2024-05-12 13:36:09,046 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 32 predicate places. [2024-05-12 13:36:09,046 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 101 transitions, 777 flow [2024-05-12 13:36:09,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:09,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:09,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:09,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:36:09,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:09,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:09,047 INFO L85 PathProgramCache]: Analyzing trace with hash 318813264, now seen corresponding path program 1 times [2024-05-12 13:36:09,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:09,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898563358] [2024-05-12 13:36:09,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:09,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:09,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898563358] [2024-05-12 13:36:09,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898563358] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:09,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:09,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:09,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390016256] [2024-05-12 13:36:09,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:09,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:09,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:09,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:09,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 101 transitions, 777 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:09,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:09,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:10,821 INFO L124 PetriNetUnfolderBase]: 4848/7643 cut-off events. [2024-05-12 13:36:10,822 INFO L125 PetriNetUnfolderBase]: For 23048/23052 co-relation queries the response was YES. [2024-05-12 13:36:10,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26140 conditions, 7643 events. 4848/7643 cut-off events. For 23048/23052 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 46087 event pairs, 1691 based on Foata normal form. 6/7411 useless extension candidates. Maximal degree in co-relation 26103. Up to 6702 conditions per place. [2024-05-12 13:36:10,863 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 133 selfloop transitions, 27 changer transitions 0/167 dead transitions. [2024-05-12 13:36:10,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 167 transitions, 1413 flow [2024-05-12 13:36:10,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2024-05-12 13:36:10,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5015197568389058 [2024-05-12 13:36:10,865 INFO L175 Difference]: Start difference. First operand has 85 places, 101 transitions, 777 flow. Second operand 7 states and 165 transitions. [2024-05-12 13:36:10,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 167 transitions, 1413 flow [2024-05-12 13:36:10,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 167 transitions, 1303 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:10,884 INFO L231 Difference]: Finished difference. Result has 91 places, 123 transitions, 950 flow [2024-05-12 13:36:10,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=91, PETRI_TRANSITIONS=123} [2024-05-12 13:36:10,885 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 38 predicate places. [2024-05-12 13:36:10,885 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 123 transitions, 950 flow [2024-05-12 13:36:10,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:10,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:10,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:10,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:36:10,886 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:10,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1046482278, now seen corresponding path program 3 times [2024-05-12 13:36:10,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:10,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986288457] [2024-05-12 13:36:10,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:10,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986288457] [2024-05-12 13:36:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986288457] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:11,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:11,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:11,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915742139] [2024-05-12 13:36:11,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:11,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:11,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:11,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:11,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:11,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:11,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 123 transitions, 950 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:11,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:11,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:11,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:12,645 INFO L124 PetriNetUnfolderBase]: 4502/7195 cut-off events. [2024-05-12 13:36:12,645 INFO L125 PetriNetUnfolderBase]: For 29109/29541 co-relation queries the response was YES. [2024-05-12 13:36:12,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26905 conditions, 7195 events. 4502/7195 cut-off events. For 29109/29541 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 44243 event pairs, 1514 based on Foata normal form. 72/6908 useless extension candidates. Maximal degree in co-relation 26864. Up to 6220 conditions per place. [2024-05-12 13:36:12,689 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 104 selfloop transitions, 36 changer transitions 0/155 dead transitions. [2024-05-12 13:36:12,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 155 transitions, 1326 flow [2024-05-12 13:36:12,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:12,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:12,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-05-12 13:36:12,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:36:12,691 INFO L175 Difference]: Start difference. First operand has 91 places, 123 transitions, 950 flow. Second operand 6 states and 146 transitions. [2024-05-12 13:36:12,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 155 transitions, 1326 flow [2024-05-12 13:36:12,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 155 transitions, 1306 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-05-12 13:36:12,718 INFO L231 Difference]: Finished difference. Result has 96 places, 123 transitions, 1021 flow [2024-05-12 13:36:12,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1021, PETRI_PLACES=96, PETRI_TRANSITIONS=123} [2024-05-12 13:36:12,718 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-05-12 13:36:12,719 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 123 transitions, 1021 flow [2024-05-12 13:36:12,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:12,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:12,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:12,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:36:12,719 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:12,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:12,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1046748444, now seen corresponding path program 2 times [2024-05-12 13:36:12,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:12,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945001006] [2024-05-12 13:36:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:12,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:13,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:13,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:13,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945001006] [2024-05-12 13:36:13,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945001006] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:13,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:13,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:13,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842836465] [2024-05-12 13:36:13,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:13,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:13,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:13,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:13,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:13,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 123 transitions, 1021 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:13,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:13,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:13,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:14,456 INFO L124 PetriNetUnfolderBase]: 4892/7734 cut-off events. [2024-05-12 13:36:14,456 INFO L125 PetriNetUnfolderBase]: For 29890/29892 co-relation queries the response was YES. [2024-05-12 13:36:14,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28695 conditions, 7734 events. 4892/7734 cut-off events. For 29890/29892 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 46581 event pairs, 1993 based on Foata normal form. 6/7496 useless extension candidates. Maximal degree in co-relation 28651. Up to 6913 conditions per place. [2024-05-12 13:36:14,506 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 128 selfloop transitions, 16 changer transitions 0/151 dead transitions. [2024-05-12 13:36:14,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 151 transitions, 1399 flow [2024-05-12 13:36:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:14,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2024-05-12 13:36:14,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:36:14,507 INFO L175 Difference]: Start difference. First operand has 96 places, 123 transitions, 1021 flow. Second operand 6 states and 132 transitions. [2024-05-12 13:36:14,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 151 transitions, 1399 flow [2024-05-12 13:36:14,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 151 transitions, 1336 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:14,535 INFO L231 Difference]: Finished difference. Result has 98 places, 126 transitions, 1023 flow [2024-05-12 13:36:14,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1023, PETRI_PLACES=98, PETRI_TRANSITIONS=126} [2024-05-12 13:36:14,536 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2024-05-12 13:36:14,536 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 126 transitions, 1023 flow [2024-05-12 13:36:14,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:14,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:14,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:14,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:36:14,537 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:14,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1046482464, now seen corresponding path program 3 times [2024-05-12 13:36:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:14,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244429093] [2024-05-12 13:36:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:14,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:15,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:15,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244429093] [2024-05-12 13:36:15,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244429093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:15,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:15,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:15,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571756396] [2024-05-12 13:36:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:15,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:15,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:15,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:15,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:15,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:15,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 126 transitions, 1023 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:15,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:15,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:15,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:16,114 INFO L124 PetriNetUnfolderBase]: 4882/7698 cut-off events. [2024-05-12 13:36:16,114 INFO L125 PetriNetUnfolderBase]: For 31276/31284 co-relation queries the response was YES. [2024-05-12 13:36:16,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28722 conditions, 7698 events. 4882/7698 cut-off events. For 31276/31284 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 46429 event pairs, 1697 based on Foata normal form. 10/7468 useless extension candidates. Maximal degree in co-relation 28677. Up to 6727 conditions per place. [2024-05-12 13:36:16,165 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 122 selfloop transitions, 31 changer transitions 0/160 dead transitions. [2024-05-12 13:36:16,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 160 transitions, 1442 flow [2024-05-12 13:36:16,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:16,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 141 transitions. [2024-05-12 13:36:16,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:36:16,167 INFO L175 Difference]: Start difference. First operand has 98 places, 126 transitions, 1023 flow. Second operand 6 states and 141 transitions. [2024-05-12 13:36:16,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 160 transitions, 1442 flow [2024-05-12 13:36:16,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 160 transitions, 1408 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:16,198 INFO L231 Difference]: Finished difference. Result has 102 places, 128 transitions, 1097 flow [2024-05-12 13:36:16,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1097, PETRI_PLACES=102, PETRI_TRANSITIONS=128} [2024-05-12 13:36:16,199 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 49 predicate places. [2024-05-12 13:36:16,199 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 128 transitions, 1097 flow [2024-05-12 13:36:16,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:16,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:16,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:36:16,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:16,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1869703646, now seen corresponding path program 4 times [2024-05-12 13:36:16,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:16,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829668798] [2024-05-12 13:36:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:16,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:16,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:16,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829668798] [2024-05-12 13:36:16,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829668798] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:16,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:16,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:16,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048131903] [2024-05-12 13:36:16,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:16,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:16,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:16,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:16,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:16,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:16,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 128 transitions, 1097 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:16,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:16,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:16,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:18,147 INFO L124 PetriNetUnfolderBase]: 5110/8048 cut-off events. [2024-05-12 13:36:18,147 INFO L125 PetriNetUnfolderBase]: For 40833/41179 co-relation queries the response was YES. [2024-05-12 13:36:18,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32462 conditions, 8048 events. 5110/8048 cut-off events. For 40833/41179 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 48882 event pairs, 1708 based on Foata normal form. 71/7754 useless extension candidates. Maximal degree in co-relation 32415. Up to 6700 conditions per place. [2024-05-12 13:36:18,205 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 141 selfloop transitions, 96 changer transitions 0/254 dead transitions. [2024-05-12 13:36:18,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 254 transitions, 2581 flow [2024-05-12 13:36:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:18,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:36:18,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-05-12 13:36:18,207 INFO L175 Difference]: Start difference. First operand has 102 places, 128 transitions, 1097 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:36:18,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 254 transitions, 2581 flow [2024-05-12 13:36:18,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 254 transitions, 2515 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:18,247 INFO L231 Difference]: Finished difference. Result has 109 places, 197 transitions, 2075 flow [2024-05-12 13:36:18,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2075, PETRI_PLACES=109, PETRI_TRANSITIONS=197} [2024-05-12 13:36:18,248 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 56 predicate places. [2024-05-12 13:36:18,248 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 197 transitions, 2075 flow [2024-05-12 13:36:18,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:18,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:18,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:36:18,249 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:18,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:18,249 INFO L85 PathProgramCache]: Analyzing trace with hash 142831036, now seen corresponding path program 5 times [2024-05-12 13:36:18,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:18,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628469508] [2024-05-12 13:36:18,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:18,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:18,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:18,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628469508] [2024-05-12 13:36:18,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628469508] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:18,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:18,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:18,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014554557] [2024-05-12 13:36:18,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:18,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:18,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:18,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:18,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:18,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:18,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 197 transitions, 2075 flow. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:18,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:18,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:18,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:20,042 INFO L124 PetriNetUnfolderBase]: 5269/8305 cut-off events. [2024-05-12 13:36:20,042 INFO L125 PetriNetUnfolderBase]: For 51787/52308 co-relation queries the response was YES. [2024-05-12 13:36:20,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36776 conditions, 8305 events. 5269/8305 cut-off events. For 51787/52308 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50681 event pairs, 1708 based on Foata normal form. 124/8053 useless extension candidates. Maximal degree in co-relation 36726. Up to 6972 conditions per place. [2024-05-12 13:36:20,207 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 173 selfloop transitions, 138 changer transitions 0/328 dead transitions. [2024-05-12 13:36:20,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 328 transitions, 3973 flow [2024-05-12 13:36:20,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:20,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:36:20,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-05-12 13:36:20,209 INFO L175 Difference]: Start difference. First operand has 109 places, 197 transitions, 2075 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:36:20,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 328 transitions, 3973 flow [2024-05-12 13:36:20,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 328 transitions, 3857 flow, removed 50 selfloop flow, removed 2 redundant places. [2024-05-12 13:36:20,264 INFO L231 Difference]: Finished difference. Result has 118 places, 282 transitions, 3584 flow [2024-05-12 13:36:20,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2019, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3584, PETRI_PLACES=118, PETRI_TRANSITIONS=282} [2024-05-12 13:36:20,264 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-05-12 13:36:20,265 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 282 transitions, 3584 flow [2024-05-12 13:36:20,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:20,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:20,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:20,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:36:20,265 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:20,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:20,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1046758333, now seen corresponding path program 1 times [2024-05-12 13:36:20,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:20,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991898131] [2024-05-12 13:36:20,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:20,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991898131] [2024-05-12 13:36:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991898131] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616617198] [2024-05-12 13:36:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:21,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:21,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 282 transitions, 3584 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:21,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:21,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:21,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:22,705 INFO L124 PetriNetUnfolderBase]: 5787/9133 cut-off events. [2024-05-12 13:36:22,706 INFO L125 PetriNetUnfolderBase]: For 59239/59241 co-relation queries the response was YES. [2024-05-12 13:36:22,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42095 conditions, 9133 events. 5787/9133 cut-off events. For 59239/59241 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 56739 event pairs, 2062 based on Foata normal form. 6/8843 useless extension candidates. Maximal degree in co-relation 42040. Up to 8091 conditions per place. [2024-05-12 13:36:22,779 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 292 selfloop transitions, 17 changer transitions 0/316 dead transitions. [2024-05-12 13:36:22,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 316 transitions, 4353 flow [2024-05-12 13:36:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:22,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:22,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:36:22,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-05-12 13:36:22,781 INFO L175 Difference]: Start difference. First operand has 118 places, 282 transitions, 3584 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:36:22,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 316 transitions, 4353 flow [2024-05-12 13:36:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 316 transitions, 4295 flow, removed 21 selfloop flow, removed 2 redundant places. [2024-05-12 13:36:22,847 INFO L231 Difference]: Finished difference. Result has 122 places, 284 transitions, 3583 flow [2024-05-12 13:36:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3583, PETRI_PLACES=122, PETRI_TRANSITIONS=284} [2024-05-12 13:36:22,848 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 69 predicate places. [2024-05-12 13:36:22,848 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 284 transitions, 3583 flow [2024-05-12 13:36:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:22,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:22,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:22,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:36:22,849 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:22,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -474049992, now seen corresponding path program 1 times [2024-05-12 13:36:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918114793] [2024-05-12 13:36:22,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:23,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918114793] [2024-05-12 13:36:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918114793] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918894133] [2024-05-12 13:36:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:24,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:24,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 284 transitions, 3583 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:24,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:24,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:24,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:25,343 INFO L124 PetriNetUnfolderBase]: 5327/8415 cut-off events. [2024-05-12 13:36:25,343 INFO L125 PetriNetUnfolderBase]: For 66425/66912 co-relation queries the response was YES. [2024-05-12 13:36:25,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40284 conditions, 8415 events. 5327/8415 cut-off events. For 66425/66912 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 51678 event pairs, 1649 based on Foata normal form. 241/8262 useless extension candidates. Maximal degree in co-relation 40227. Up to 6533 conditions per place. [2024-05-12 13:36:25,416 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 131 selfloop transitions, 208 changer transitions 0/357 dead transitions. [2024-05-12 13:36:25,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 357 transitions, 4690 flow [2024-05-12 13:36:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:25,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 221 transitions. [2024-05-12 13:36:25,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224586288416075 [2024-05-12 13:36:25,418 INFO L175 Difference]: Start difference. First operand has 122 places, 284 transitions, 3583 flow. Second operand 9 states and 221 transitions. [2024-05-12 13:36:25,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 357 transitions, 4690 flow [2024-05-12 13:36:25,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 357 transitions, 4651 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:25,496 INFO L231 Difference]: Finished difference. Result has 128 places, 292 transitions, 4106 flow [2024-05-12 13:36:25,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3544, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4106, PETRI_PLACES=128, PETRI_TRANSITIONS=292} [2024-05-12 13:36:25,497 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-05-12 13:36:25,497 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 292 transitions, 4106 flow [2024-05-12 13:36:25,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:25,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:25,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:25,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:36:25,498 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:25,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -473959627, now seen corresponding path program 1 times [2024-05-12 13:36:25,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:25,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622754190] [2024-05-12 13:36:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:25,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:25,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:26,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:26,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:26,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622754190] [2024-05-12 13:36:26,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622754190] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:26,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:26,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:26,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325428396] [2024-05-12 13:36:26,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:26,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:26,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:26,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:26,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 292 transitions, 4106 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:26,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:26,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:26,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:27,659 INFO L124 PetriNetUnfolderBase]: 5940/9324 cut-off events. [2024-05-12 13:36:27,659 INFO L125 PetriNetUnfolderBase]: For 79594/79598 co-relation queries the response was YES. [2024-05-12 13:36:27,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46906 conditions, 9324 events. 5940/9324 cut-off events. For 79594/79598 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 57545 event pairs, 1699 based on Foata normal form. 6/9038 useless extension candidates. Maximal degree in co-relation 46847. Up to 7506 conditions per place. [2024-05-12 13:36:27,741 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 326 selfloop transitions, 106 changer transitions 0/439 dead transitions. [2024-05-12 13:36:27,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 439 transitions, 6545 flow [2024-05-12 13:36:27,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:27,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:36:27,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-05-12 13:36:27,742 INFO L175 Difference]: Start difference. First operand has 128 places, 292 transitions, 4106 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:36:27,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 439 transitions, 6545 flow [2024-05-12 13:36:27,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 439 transitions, 6183 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:27,844 INFO L231 Difference]: Finished difference. Result has 133 places, 357 transitions, 5155 flow [2024-05-12 13:36:27,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3824, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5155, PETRI_PLACES=133, PETRI_TRANSITIONS=357} [2024-05-12 13:36:27,845 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-05-12 13:36:27,845 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 357 transitions, 5155 flow [2024-05-12 13:36:27,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:27,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:27,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:36:27,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:27,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash -470234977, now seen corresponding path program 2 times [2024-05-12 13:36:27,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:27,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210789955] [2024-05-12 13:36:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:28,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:28,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:28,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210789955] [2024-05-12 13:36:28,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210789955] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:28,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:28,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:28,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838219053] [2024-05-12 13:36:28,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:28,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:28,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:28,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:28,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:28,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:28,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 357 transitions, 5155 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:28,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:28,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:28,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:30,268 INFO L124 PetriNetUnfolderBase]: 6054/9490 cut-off events. [2024-05-12 13:36:30,269 INFO L125 PetriNetUnfolderBase]: For 85294/85298 co-relation queries the response was YES. [2024-05-12 13:36:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50297 conditions, 9490 events. 6054/9490 cut-off events. For 85294/85298 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58450 event pairs, 1857 based on Foata normal form. 6/9203 useless extension candidates. Maximal degree in co-relation 50234. Up to 8078 conditions per place. [2024-05-12 13:36:30,355 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 376 selfloop transitions, 72 changer transitions 0/455 dead transitions. [2024-05-12 13:36:30,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 455 transitions, 6731 flow [2024-05-12 13:36:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:36:30,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:36:30,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 233 transitions. [2024-05-12 13:36:30,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4957446808510638 [2024-05-12 13:36:30,357 INFO L175 Difference]: Start difference. First operand has 133 places, 357 transitions, 5155 flow. Second operand 10 states and 233 transitions. [2024-05-12 13:36:30,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 455 transitions, 6731 flow [2024-05-12 13:36:30,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 455 transitions, 6640 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:30,479 INFO L231 Difference]: Finished difference. Result has 141 places, 373 transitions, 5459 flow [2024-05-12 13:36:30,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5080, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5459, PETRI_PLACES=141, PETRI_TRANSITIONS=373} [2024-05-12 13:36:30,479 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 88 predicate places. [2024-05-12 13:36:30,479 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 373 transitions, 5459 flow [2024-05-12 13:36:30,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:30,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:30,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:36:30,480 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:30,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:30,481 INFO L85 PathProgramCache]: Analyzing trace with hash -470240557, now seen corresponding path program 3 times [2024-05-12 13:36:30,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:30,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202407308] [2024-05-12 13:36:30,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:30,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:30,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:31,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:31,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202407308] [2024-05-12 13:36:31,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202407308] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:31,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:31,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:31,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352845086] [2024-05-12 13:36:31,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:31,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:31,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:31,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:31,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:31,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:31,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 373 transitions, 5459 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:31,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:31,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:31,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:32,781 INFO L124 PetriNetUnfolderBase]: 6044/9476 cut-off events. [2024-05-12 13:36:32,781 INFO L125 PetriNetUnfolderBase]: For 87519/87523 co-relation queries the response was YES. [2024-05-12 13:36:32,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50612 conditions, 9476 events. 6044/9476 cut-off events. For 87519/87523 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 58359 event pairs, 1850 based on Foata normal form. 6/9189 useless extension candidates. Maximal degree in co-relation 50546. Up to 8070 conditions per place. [2024-05-12 13:36:32,868 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 364 selfloop transitions, 66 changer transitions 0/437 dead transitions. [2024-05-12 13:36:32,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 437 transitions, 6663 flow [2024-05-12 13:36:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:36:32,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:36:32,870 INFO L175 Difference]: Start difference. First operand has 141 places, 373 transitions, 5459 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:36:32,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 437 transitions, 6663 flow [2024-05-12 13:36:33,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 437 transitions, 6615 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:33,011 INFO L231 Difference]: Finished difference. Result has 146 places, 373 transitions, 5559 flow [2024-05-12 13:36:33,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5411, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5559, PETRI_PLACES=146, PETRI_TRANSITIONS=373} [2024-05-12 13:36:33,011 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 93 predicate places. [2024-05-12 13:36:33,011 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 373 transitions, 5559 flow [2024-05-12 13:36:33,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:33,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:33,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:33,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:36:33,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:33,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:33,012 INFO L85 PathProgramCache]: Analyzing trace with hash 573639488, now seen corresponding path program 2 times [2024-05-12 13:36:33,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:33,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806564073] [2024-05-12 13:36:33,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:34,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806564073] [2024-05-12 13:36:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806564073] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:34,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:34,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352047941] [2024-05-12 13:36:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:34,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:34,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:34,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:34,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 373 transitions, 5559 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:34,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:34,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:34,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:35,621 INFO L124 PetriNetUnfolderBase]: 5842/9093 cut-off events. [2024-05-12 13:36:35,621 INFO L125 PetriNetUnfolderBase]: For 103098/103379 co-relation queries the response was YES. [2024-05-12 13:36:35,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50969 conditions, 9093 events. 5842/9093 cut-off events. For 103098/103379 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 55443 event pairs, 1701 based on Foata normal form. 12/8672 useless extension candidates. Maximal degree in co-relation 50901. Up to 7667 conditions per place. [2024-05-12 13:36:35,691 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 270 selfloop transitions, 135 changer transitions 0/429 dead transitions. [2024-05-12 13:36:35,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 429 transitions, 6673 flow [2024-05-12 13:36:35,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:36:35,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:36:35,692 INFO L175 Difference]: Start difference. First operand has 146 places, 373 transitions, 5559 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:36:35,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 429 transitions, 6673 flow [2024-05-12 13:36:35,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 429 transitions, 6541 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-05-12 13:36:35,822 INFO L231 Difference]: Finished difference. Result has 147 places, 377 transitions, 5775 flow [2024-05-12 13:36:35,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5775, PETRI_PLACES=147, PETRI_TRANSITIONS=377} [2024-05-12 13:36:35,823 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-05-12 13:36:35,823 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 377 transitions, 5775 flow [2024-05-12 13:36:35,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:35,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:35,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:35,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:36:35,823 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:35,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:35,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1910535739, now seen corresponding path program 4 times [2024-05-12 13:36:35,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:35,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399894213] [2024-05-12 13:36:35,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:35,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399894213] [2024-05-12 13:36:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399894213] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:36,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429037133] [2024-05-12 13:36:36,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:36,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:36,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:36,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:36,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 377 transitions, 5775 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:36,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:36,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:36,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:38,169 INFO L124 PetriNetUnfolderBase]: 6142/9627 cut-off events. [2024-05-12 13:36:38,169 INFO L125 PetriNetUnfolderBase]: For 101183/101185 co-relation queries the response was YES. [2024-05-12 13:36:38,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52347 conditions, 9627 events. 6142/9627 cut-off events. For 101183/101185 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 59526 event pairs, 2042 based on Foata normal form. 6/9334 useless extension candidates. Maximal degree in co-relation 52278. Up to 8570 conditions per place. [2024-05-12 13:36:38,254 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 389 selfloop transitions, 19 changer transitions 0/415 dead transitions. [2024-05-12 13:36:38,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 415 transitions, 6779 flow [2024-05-12 13:36:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2024-05-12 13:36:38,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47112462006079026 [2024-05-12 13:36:38,255 INFO L175 Difference]: Start difference. First operand has 147 places, 377 transitions, 5775 flow. Second operand 7 states and 155 transitions. [2024-05-12 13:36:38,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 415 transitions, 6779 flow [2024-05-12 13:36:38,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 415 transitions, 6507 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-05-12 13:36:38,400 INFO L231 Difference]: Finished difference. Result has 148 places, 380 transitions, 5588 flow [2024-05-12 13:36:38,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5588, PETRI_PLACES=148, PETRI_TRANSITIONS=380} [2024-05-12 13:36:38,400 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 95 predicate places. [2024-05-12 13:36:38,401 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 380 transitions, 5588 flow [2024-05-12 13:36:38,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:38,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:38,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:38,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:36:38,401 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:38,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:38,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1420085514, now seen corresponding path program 3 times [2024-05-12 13:36:38,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:38,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73955503] [2024-05-12 13:36:38,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:38,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:38,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:39,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:39,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:39,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73955503] [2024-05-12 13:36:39,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73955503] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:39,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:39,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:39,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767695839] [2024-05-12 13:36:39,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:39,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:39,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:39,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:39,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:39,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:39,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 380 transitions, 5588 flow. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:39,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:39,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:39,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:40,921 INFO L124 PetriNetUnfolderBase]: 6016/9316 cut-off events. [2024-05-12 13:36:40,921 INFO L125 PetriNetUnfolderBase]: For 113270/113599 co-relation queries the response was YES. [2024-05-12 13:36:40,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52366 conditions, 9316 events. 6016/9316 cut-off events. For 113270/113599 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 56746 event pairs, 1561 based on Foata normal form. 37/8912 useless extension candidates. Maximal degree in co-relation 52296. Up to 7580 conditions per place. [2024-05-12 13:36:41,027 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 390 selfloop transitions, 125 changer transitions 0/540 dead transitions. [2024-05-12 13:36:41,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 540 transitions, 8671 flow [2024-05-12 13:36:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:41,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-05-12 13:36:41,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-05-12 13:36:41,028 INFO L175 Difference]: Start difference. First operand has 148 places, 380 transitions, 5588 flow. Second operand 7 states and 182 transitions. [2024-05-12 13:36:41,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 540 transitions, 8671 flow [2024-05-12 13:36:41,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 540 transitions, 8593 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:41,239 INFO L231 Difference]: Finished difference. Result has 154 places, 467 transitions, 7473 flow [2024-05-12 13:36:41,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7473, PETRI_PLACES=154, PETRI_TRANSITIONS=467} [2024-05-12 13:36:41,240 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 101 predicate places. [2024-05-12 13:36:41,240 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 467 transitions, 7473 flow [2024-05-12 13:36:41,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 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) [2024-05-12 13:36:41,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:41,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:41,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:36:41,240 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:41,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1435118370, now seen corresponding path program 1 times [2024-05-12 13:36:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071923083] [2024-05-12 13:36:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:41,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:42,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:42,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071923083] [2024-05-12 13:36:42,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071923083] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:42,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:42,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100540614] [2024-05-12 13:36:42,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:42,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:42,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:42,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:42,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 467 transitions, 7473 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:42,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:42,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:42,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:43,672 INFO L124 PetriNetUnfolderBase]: 6295/9799 cut-off events. [2024-05-12 13:36:43,672 INFO L125 PetriNetUnfolderBase]: For 120271/120273 co-relation queries the response was YES. [2024-05-12 13:36:43,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56952 conditions, 9799 events. 6295/9799 cut-off events. For 120271/120273 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 60272 event pairs, 1998 based on Foata normal form. 4/9515 useless extension candidates. Maximal degree in co-relation 56877. Up to 8794 conditions per place. [2024-05-12 13:36:43,771 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 470 selfloop transitions, 22 changer transitions 0/499 dead transitions. [2024-05-12 13:36:43,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 499 transitions, 8623 flow [2024-05-12 13:36:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:36:43,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:36:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:36:43,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-05-12 13:36:43,772 INFO L175 Difference]: Start difference. First operand has 154 places, 467 transitions, 7473 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:36:43,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 499 transitions, 8623 flow [2024-05-12 13:36:43,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 499 transitions, 8575 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-05-12 13:36:44,126 INFO L231 Difference]: Finished difference. Result has 160 places, 474 transitions, 7562 flow [2024-05-12 13:36:44,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7425, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7562, PETRI_PLACES=160, PETRI_TRANSITIONS=474} [2024-05-12 13:36:44,127 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-05-12 13:36:44,127 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 474 transitions, 7562 flow [2024-05-12 13:36:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:44,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:44,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:44,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:36:44,127 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:44,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:44,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1434908903, now seen corresponding path program 5 times [2024-05-12 13:36:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:44,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104749556] [2024-05-12 13:36:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:44,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:44,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:44,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104749556] [2024-05-12 13:36:44,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104749556] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:44,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:44,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:44,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039068362] [2024-05-12 13:36:44,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:44,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:44,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:44,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:44,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:44,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:44,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 474 transitions, 7562 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:44,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:44,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:44,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:46,690 INFO L124 PetriNetUnfolderBase]: 6347/9866 cut-off events. [2024-05-12 13:36:46,690 INFO L125 PetriNetUnfolderBase]: For 128515/128517 co-relation queries the response was YES. [2024-05-12 13:36:46,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58704 conditions, 9866 events. 6347/9866 cut-off events. For 128515/128517 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 60293 event pairs, 1854 based on Foata normal form. 4/9581 useless extension candidates. Maximal degree in co-relation 58625. Up to 8492 conditions per place. [2024-05-12 13:36:46,789 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 448 selfloop transitions, 88 changer transitions 0/543 dead transitions. [2024-05-12 13:36:46,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 543 transitions, 9237 flow [2024-05-12 13:36:46,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:36:46,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:36:46,791 INFO L175 Difference]: Start difference. First operand has 160 places, 474 transitions, 7562 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:36:46,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 543 transitions, 9237 flow [2024-05-12 13:36:47,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 543 transitions, 9195 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:47,027 INFO L231 Difference]: Finished difference. Result has 165 places, 488 transitions, 8001 flow [2024-05-12 13:36:47,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7520, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8001, PETRI_PLACES=165, PETRI_TRANSITIONS=488} [2024-05-12 13:36:47,028 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 112 predicate places. [2024-05-12 13:36:47,028 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 488 transitions, 8001 flow [2024-05-12 13:36:47,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:47,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:47,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:47,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:36:47,029 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:47,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:47,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1918786699, now seen corresponding path program 6 times [2024-05-12 13:36:47,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:47,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321983238] [2024-05-12 13:36:47,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:47,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:47,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:47,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:47,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321983238] [2024-05-12 13:36:47,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321983238] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:47,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:36:47,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516949216] [2024-05-12 13:36:47,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:36:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:36:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:36:47,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:47,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 488 transitions, 8001 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:47,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:47,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:47,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:49,454 INFO L124 PetriNetUnfolderBase]: 6337/9859 cut-off events. [2024-05-12 13:36:49,455 INFO L125 PetriNetUnfolderBase]: For 135704/135708 co-relation queries the response was YES. [2024-05-12 13:36:49,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59656 conditions, 9859 events. 6337/9859 cut-off events. For 135704/135708 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 60444 event pairs, 1837 based on Foata normal form. 6/9576 useless extension candidates. Maximal degree in co-relation 59575. Up to 8484 conditions per place. [2024-05-12 13:36:49,550 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 437 selfloop transitions, 99 changer transitions 0/543 dead transitions. [2024-05-12 13:36:49,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 543 transitions, 9384 flow [2024-05-12 13:36:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:36:49,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-05-12 13:36:49,552 INFO L175 Difference]: Start difference. First operand has 165 places, 488 transitions, 8001 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:36:49,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 543 transitions, 9384 flow [2024-05-12 13:36:49,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 543 transitions, 9261 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-05-12 13:36:49,796 INFO L231 Difference]: Finished difference. Result has 169 places, 488 transitions, 8093 flow [2024-05-12 13:36:49,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8093, PETRI_PLACES=169, PETRI_TRANSITIONS=488} [2024-05-12 13:36:49,797 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-05-12 13:36:49,797 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 488 transitions, 8093 flow [2024-05-12 13:36:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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) [2024-05-12 13:36:49,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:49,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:49,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:36:49,798 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:49,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:49,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1409221275, now seen corresponding path program 1 times [2024-05-12 13:36:49,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:49,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185618622] [2024-05-12 13:36:49,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:49,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:50,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:50,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185618622] [2024-05-12 13:36:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185618622] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:50,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:50,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:36:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045839148] [2024-05-12 13:36:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:50,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:36:50,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:36:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:36:50,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:50,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 488 transitions, 8093 flow. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-05-12 13:36:50,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:50,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:50,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:52,163 INFO L124 PetriNetUnfolderBase]: 6084/9377 cut-off events. [2024-05-12 13:36:52,164 INFO L125 PetriNetUnfolderBase]: For 142847/143217 co-relation queries the response was YES. [2024-05-12 13:36:52,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57164 conditions, 9377 events. 6084/9377 cut-off events. For 142847/143217 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 57077 event pairs, 1930 based on Foata normal form. 290/9398 useless extension candidates. Maximal degree in co-relation 57082. Up to 8369 conditions per place. [2024-05-12 13:36:52,259 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 435 selfloop transitions, 21 changer transitions 0/504 dead transitions. [2024-05-12 13:36:52,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 504 transitions, 9083 flow [2024-05-12 13:36:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:36:52,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:36:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 13:36:52,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-05-12 13:36:52,261 INFO L175 Difference]: Start difference. First operand has 169 places, 488 transitions, 8093 flow. Second operand 5 states and 112 transitions. [2024-05-12 13:36:52,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 504 transitions, 9083 flow [2024-05-12 13:36:52,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 504 transitions, 8801 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:36:52,492 INFO L231 Difference]: Finished difference. Result has 169 places, 490 transitions, 7897 flow [2024-05-12 13:36:52,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7817, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7897, PETRI_PLACES=169, PETRI_TRANSITIONS=490} [2024-05-12 13:36:52,493 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 116 predicate places. [2024-05-12 13:36:52,493 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 490 transitions, 7897 flow [2024-05-12 13:36:52,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 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) [2024-05-12 13:36:52,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:52,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:52,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:36:52,494 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:52,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:52,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1810707387, now seen corresponding path program 1 times [2024-05-12 13:36:52,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:52,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504904850] [2024-05-12 13:36:52,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:52,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:53,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:53,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504904850] [2024-05-12 13:36:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504904850] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:53,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:53,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454316685] [2024-05-12 13:36:53,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:53,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:53,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:53,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:53,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 490 transitions, 7897 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:53,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:53,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:53,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:55,338 INFO L124 PetriNetUnfolderBase]: 6212/9575 cut-off events. [2024-05-12 13:36:55,338 INFO L125 PetriNetUnfolderBase]: For 161086/161569 co-relation queries the response was YES. [2024-05-12 13:36:55,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59820 conditions, 9575 events. 6212/9575 cut-off events. For 161086/161569 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 58160 event pairs, 1276 based on Foata normal form. 62/9188 useless extension candidates. Maximal degree in co-relation 59737. Up to 7133 conditions per place. [2024-05-12 13:36:55,441 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 201 selfloop transitions, 328 changer transitions 0/558 dead transitions. [2024-05-12 13:36:55,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 558 transitions, 9435 flow [2024-05-12 13:36:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-05-12 13:36:55,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-05-12 13:36:55,442 INFO L175 Difference]: Start difference. First operand has 169 places, 490 transitions, 7897 flow. Second operand 9 states and 222 transitions. [2024-05-12 13:36:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 558 transitions, 9435 flow [2024-05-12 13:36:55,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 558 transitions, 9406 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-05-12 13:36:55,705 INFO L231 Difference]: Finished difference. Result has 177 places, 496 transitions, 8652 flow [2024-05-12 13:36:55,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7868, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=324, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8652, PETRI_PLACES=177, PETRI_TRANSITIONS=496} [2024-05-12 13:36:55,706 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 124 predicate places. [2024-05-12 13:36:55,706 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 496 transitions, 8652 flow [2024-05-12 13:36:55,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:55,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:55,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:55,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:36:55,706 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:55,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:55,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1810646813, now seen corresponding path program 1 times [2024-05-12 13:36:55,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:55,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562231064] [2024-05-12 13:36:55,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:55,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:56,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562231064] [2024-05-12 13:36:56,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562231064] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:56,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:56,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121715794] [2024-05-12 13:36:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:56,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:56,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:56,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 496 transitions, 8652 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:56,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:56,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:56,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:58,679 INFO L124 PetriNetUnfolderBase]: 6517/10099 cut-off events. [2024-05-12 13:36:58,679 INFO L125 PetriNetUnfolderBase]: For 165995/165999 co-relation queries the response was YES. [2024-05-12 13:36:58,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62927 conditions, 10099 events. 6517/10099 cut-off events. For 165995/165999 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 61946 event pairs, 1483 based on Foata normal form. 6/9821 useless extension candidates. Maximal degree in co-relation 62841. Up to 7722 conditions per place. [2024-05-12 13:36:58,788 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 447 selfloop transitions, 165 changer transitions 0/619 dead transitions. [2024-05-12 13:36:58,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 619 transitions, 10794 flow [2024-05-12 13:36:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:58,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-05-12 13:36:58,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145067698259188 [2024-05-12 13:36:58,790 INFO L175 Difference]: Start difference. First operand has 177 places, 496 transitions, 8652 flow. Second operand 11 states and 266 transitions. [2024-05-12 13:36:58,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 619 transitions, 10794 flow [2024-05-12 13:36:59,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 619 transitions, 10251 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:59,111 INFO L231 Difference]: Finished difference. Result has 185 places, 518 transitions, 8809 flow [2024-05-12 13:36:59,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8809, PETRI_PLACES=185, PETRI_TRANSITIONS=518} [2024-05-12 13:36:59,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 132 predicate places. [2024-05-12 13:36:59,112 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 518 transitions, 8809 flow [2024-05-12 13:36:59,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:59,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:59,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:36:59,113 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:59,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:59,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1810646937, now seen corresponding path program 2 times [2024-05-12 13:36:59,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:59,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851524126] [2024-05-12 13:36:59,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:00,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:00,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851524126] [2024-05-12 13:37:00,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851524126] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:00,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:00,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:00,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175867773] [2024-05-12 13:37:00,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:00,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:00,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:00,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:00,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:00,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 518 transitions, 8809 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:00,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:00,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:00,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:02,077 INFO L124 PetriNetUnfolderBase]: 6559/10049 cut-off events. [2024-05-12 13:37:02,077 INFO L125 PetriNetUnfolderBase]: For 201179/201547 co-relation queries the response was YES. [2024-05-12 13:37:02,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67048 conditions, 10049 events. 6559/10049 cut-off events. For 201179/201547 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 61024 event pairs, 1450 based on Foata normal form. 23/9607 useless extension candidates. Maximal degree in co-relation 66958. Up to 7386 conditions per place. [2024-05-12 13:37:02,409 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 428 selfloop transitions, 275 changer transitions 0/735 dead transitions. [2024-05-12 13:37:02,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 735 transitions, 13103 flow [2024-05-12 13:37:02,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:02,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-05-12 13:37:02,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508274231678487 [2024-05-12 13:37:02,417 INFO L175 Difference]: Start difference. First operand has 185 places, 518 transitions, 8809 flow. Second operand 9 states and 233 transitions. [2024-05-12 13:37:02,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 735 transitions, 13103 flow [2024-05-12 13:37:02,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 735 transitions, 12801 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:02,726 INFO L231 Difference]: Finished difference. Result has 192 places, 635 transitions, 11471 flow [2024-05-12 13:37:02,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=8549, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11471, PETRI_PLACES=192, PETRI_TRANSITIONS=635} [2024-05-12 13:37:02,727 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 139 predicate places. [2024-05-12 13:37:02,727 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 635 transitions, 11471 flow [2024-05-12 13:37:02,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:02,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:02,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:02,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:37:02,727 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:02,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:02,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1807850427, now seen corresponding path program 3 times [2024-05-12 13:37:02,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:02,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359297156] [2024-05-12 13:37:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:02,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:03,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:03,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359297156] [2024-05-12 13:37:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359297156] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105853846] [2024-05-12 13:37:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:03,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:03,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:03,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:03,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:03,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 635 transitions, 11471 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:03,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:03,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:03,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:05,778 INFO L124 PetriNetUnfolderBase]: 6642/10153 cut-off events. [2024-05-12 13:37:05,778 INFO L125 PetriNetUnfolderBase]: For 241653/242118 co-relation queries the response was YES. [2024-05-12 13:37:05,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73598 conditions, 10153 events. 6642/10153 cut-off events. For 241653/242118 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 61740 event pairs, 1582 based on Foata normal form. 36/9727 useless extension candidates. Maximal degree in co-relation 73502. Up to 8197 conditions per place. [2024-05-12 13:37:05,898 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 256 selfloop transitions, 418 changer transitions 0/706 dead transitions. [2024-05-12 13:37:05,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 706 transitions, 13285 flow [2024-05-12 13:37:05,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:05,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:05,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:37:05,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508274231678487 [2024-05-12 13:37:05,899 INFO L175 Difference]: Start difference. First operand has 192 places, 635 transitions, 11471 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:37:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 706 transitions, 13285 flow [2024-05-12 13:37:06,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 706 transitions, 13112 flow, removed 77 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:06,396 INFO L231 Difference]: Finished difference. Result has 200 places, 643 transitions, 12337 flow [2024-05-12 13:37:06,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11316, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12337, PETRI_PLACES=200, PETRI_TRANSITIONS=643} [2024-05-12 13:37:06,397 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 147 predicate places. [2024-05-12 13:37:06,397 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 643 transitions, 12337 flow [2024-05-12 13:37:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:06,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:06,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:06,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:37:06,397 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:06,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:06,398 INFO L85 PathProgramCache]: Analyzing trace with hash 602955871, now seen corresponding path program 4 times [2024-05-12 13:37:06,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:06,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455651451] [2024-05-12 13:37:06,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:06,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:07,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:07,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:07,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455651451] [2024-05-12 13:37:07,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455651451] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:07,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:07,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:07,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721264338] [2024-05-12 13:37:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:07,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:07,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:07,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:07,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:07,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:07,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 643 transitions, 12337 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:07,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:07,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:07,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:09,977 INFO L124 PetriNetUnfolderBase]: 6679/10227 cut-off events. [2024-05-12 13:37:09,978 INFO L125 PetriNetUnfolderBase]: For 253657/253980 co-relation queries the response was YES. [2024-05-12 13:37:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74967 conditions, 10227 events. 6679/10227 cut-off events. For 253657/253980 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 62273 event pairs, 1607 based on Foata normal form. 10/9763 useless extension candidates. Maximal degree in co-relation 74868. Up to 8711 conditions per place. [2024-05-12 13:37:10,110 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 479 selfloop transitions, 196 changer transitions 0/707 dead transitions. [2024-05-12 13:37:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 707 transitions, 14062 flow [2024-05-12 13:37:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:37:10,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4988179669030733 [2024-05-12 13:37:10,111 INFO L175 Difference]: Start difference. First operand has 200 places, 643 transitions, 12337 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:37:10,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 707 transitions, 14062 flow [2024-05-12 13:37:10,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 707 transitions, 13259 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:10,630 INFO L231 Difference]: Finished difference. Result has 203 places, 646 transitions, 11996 flow [2024-05-12 13:37:10,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11534, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11996, PETRI_PLACES=203, PETRI_TRANSITIONS=646} [2024-05-12 13:37:10,630 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-05-12 13:37:10,631 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 646 transitions, 11996 flow [2024-05-12 13:37:10,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:10,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:10,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:10,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:37:10,631 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:10,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:10,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1692554483, now seen corresponding path program 2 times [2024-05-12 13:37:10,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:10,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920255131] [2024-05-12 13:37:10,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:10,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:10,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:11,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:11,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:11,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920255131] [2024-05-12 13:37:11,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920255131] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:11,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:11,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:11,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129086638] [2024-05-12 13:37:11,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:11,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:11,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:11,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:11,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:11,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:11,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 646 transitions, 11996 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:11,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:11,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:11,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:13,916 INFO L124 PetriNetUnfolderBase]: 7055/10839 cut-off events. [2024-05-12 13:37:13,917 INFO L125 PetriNetUnfolderBase]: For 229248/229252 co-relation queries the response was YES. [2024-05-12 13:37:13,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75168 conditions, 10839 events. 7055/10839 cut-off events. For 229248/229252 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 66508 event pairs, 1770 based on Foata normal form. 6/10571 useless extension candidates. Maximal degree in co-relation 75068. Up to 9495 conditions per place. [2024-05-12 13:37:14,053 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 659 selfloop transitions, 107 changer transitions 0/773 dead transitions. [2024-05-12 13:37:14,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 773 transitions, 14674 flow [2024-05-12 13:37:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:14,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:14,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-05-12 13:37:14,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940898345153664 [2024-05-12 13:37:14,055 INFO L175 Difference]: Start difference. First operand has 203 places, 646 transitions, 11996 flow. Second operand 9 states and 209 transitions. [2024-05-12 13:37:14,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 773 transitions, 14674 flow [2024-05-12 13:37:14,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 773 transitions, 14313 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:14,576 INFO L231 Difference]: Finished difference. Result has 211 places, 705 transitions, 12828 flow [2024-05-12 13:37:14,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=11635, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12828, PETRI_PLACES=211, PETRI_TRANSITIONS=705} [2024-05-12 13:37:14,577 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 158 predicate places. [2024-05-12 13:37:14,577 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 705 transitions, 12828 flow [2024-05-12 13:37:14,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:14,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:14,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:14,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:37:14,577 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:14,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:14,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1692559133, now seen corresponding path program 3 times [2024-05-12 13:37:14,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:14,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591129122] [2024-05-12 13:37:14,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:14,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:14,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:15,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:15,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591129122] [2024-05-12 13:37:15,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591129122] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:15,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780733539] [2024-05-12 13:37:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:15,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:15,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:15,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:15,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:15,572 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:15,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 705 transitions, 12828 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:15,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:15,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:15,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:17,926 INFO L124 PetriNetUnfolderBase]: 7164/10989 cut-off events. [2024-05-12 13:37:17,926 INFO L125 PetriNetUnfolderBase]: For 248223/248229 co-relation queries the response was YES. [2024-05-12 13:37:18,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78509 conditions, 10989 events. 7164/10989 cut-off events. For 248223/248229 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 67336 event pairs, 1766 based on Foata normal form. 8/10723 useless extension candidates. Maximal degree in co-relation 78403. Up to 9521 conditions per place. [2024-05-12 13:37:18,073 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 669 selfloop transitions, 119 changer transitions 0/795 dead transitions. [2024-05-12 13:37:18,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 795 transitions, 15237 flow [2024-05-12 13:37:18,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:18,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:18,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-05-12 13:37:18,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-05-12 13:37:18,074 INFO L175 Difference]: Start difference. First operand has 211 places, 705 transitions, 12828 flow. Second operand 9 states and 212 transitions. [2024-05-12 13:37:18,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 795 transitions, 15237 flow [2024-05-12 13:37:18,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 795 transitions, 14967 flow, removed 134 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:18,675 INFO L231 Difference]: Finished difference. Result has 220 places, 725 transitions, 13180 flow [2024-05-12 13:37:18,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12558, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=594, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13180, PETRI_PLACES=220, PETRI_TRANSITIONS=725} [2024-05-12 13:37:18,676 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 167 predicate places. [2024-05-12 13:37:18,676 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 725 transitions, 13180 flow [2024-05-12 13:37:18,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:18,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:18,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:18,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:37:18,677 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:18,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 603140569, now seen corresponding path program 1 times [2024-05-12 13:37:18,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:18,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564193527] [2024-05-12 13:37:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:18,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:19,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:19,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:19,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564193527] [2024-05-12 13:37:19,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564193527] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:19,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:19,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:19,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652628583] [2024-05-12 13:37:19,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:19,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:19,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:19,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:19,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:19,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:19,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 725 transitions, 13180 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:19,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:19,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:19,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:22,086 INFO L124 PetriNetUnfolderBase]: 7206/11074 cut-off events. [2024-05-12 13:37:22,086 INFO L125 PetriNetUnfolderBase]: For 264976/264982 co-relation queries the response was YES. [2024-05-12 13:37:22,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80644 conditions, 11074 events. 7206/11074 cut-off events. For 264976/264982 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 68173 event pairs, 1798 based on Foata normal form. 8/10799 useless extension candidates. Maximal degree in co-relation 80534. Up to 9859 conditions per place. [2024-05-12 13:37:22,240 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 705 selfloop transitions, 72 changer transitions 0/784 dead transitions. [2024-05-12 13:37:22,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 784 transitions, 15080 flow [2024-05-12 13:37:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:22,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:37:22,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-05-12 13:37:22,242 INFO L175 Difference]: Start difference. First operand has 220 places, 725 transitions, 13180 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:37:22,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 784 transitions, 15080 flow [2024-05-12 13:37:22,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 784 transitions, 14860 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:22,896 INFO L231 Difference]: Finished difference. Result has 223 places, 727 transitions, 13152 flow [2024-05-12 13:37:22,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12964, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13152, PETRI_PLACES=223, PETRI_TRANSITIONS=727} [2024-05-12 13:37:22,897 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 170 predicate places. [2024-05-12 13:37:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 727 transitions, 13152 flow [2024-05-12 13:37:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:22,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:22,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:37:22,898 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:22,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 603133625, now seen corresponding path program 4 times [2024-05-12 13:37:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907865255] [2024-05-12 13:37:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:24,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:24,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907865255] [2024-05-12 13:37:24,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907865255] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:24,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:24,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:24,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578254091] [2024-05-12 13:37:24,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:24,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:24,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:24,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:24,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:24,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:24,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 727 transitions, 13152 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:24,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:24,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:24,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:26,632 INFO L124 PetriNetUnfolderBase]: 7206/11089 cut-off events. [2024-05-12 13:37:26,632 INFO L125 PetriNetUnfolderBase]: For 272247/272253 co-relation queries the response was YES. [2024-05-12 13:37:26,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81375 conditions, 11089 events. 7206/11089 cut-off events. For 272247/272253 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 68480 event pairs, 1771 based on Foata normal form. 8/10810 useless extension candidates. Maximal degree in co-relation 81263. Up to 9655 conditions per place. [2024-05-12 13:37:26,788 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 693 selfloop transitions, 121 changer transitions 0/821 dead transitions. [2024-05-12 13:37:26,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 821 transitions, 15311 flow [2024-05-12 13:37:26,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:37:26,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:37:26,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 254 transitions. [2024-05-12 13:37:26,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4912959381044487 [2024-05-12 13:37:26,789 INFO L175 Difference]: Start difference. First operand has 223 places, 727 transitions, 13152 flow. Second operand 11 states and 254 transitions. [2024-05-12 13:37:26,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 821 transitions, 15311 flow [2024-05-12 13:37:27,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 821 transitions, 15023 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-05-12 13:37:27,494 INFO L231 Difference]: Finished difference. Result has 226 places, 731 transitions, 13182 flow [2024-05-12 13:37:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12868, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13182, PETRI_PLACES=226, PETRI_TRANSITIONS=731} [2024-05-12 13:37:27,495 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 173 predicate places. [2024-05-12 13:37:27,496 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 731 transitions, 13182 flow [2024-05-12 13:37:27,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:27,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:27,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:37:27,496 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:27,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 647150597, now seen corresponding path program 5 times [2024-05-12 13:37:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:27,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389399422] [2024-05-12 13:37:27,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:27,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:28,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:28,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389399422] [2024-05-12 13:37:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389399422] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:28,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:28,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761206569] [2024-05-12 13:37:28,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:28,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:28,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:28,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:28,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:28,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:28,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 731 transitions, 13182 flow. Second operand has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:28,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:28,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:28,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:30,788 INFO L124 PetriNetUnfolderBase]: 7048/10772 cut-off events. [2024-05-12 13:37:30,789 INFO L125 PetriNetUnfolderBase]: For 315279/315725 co-relation queries the response was YES. [2024-05-12 13:37:30,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81770 conditions, 10772 events. 7048/10772 cut-off events. For 315279/315725 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 66101 event pairs, 1204 based on Foata normal form. 59/10376 useless extension candidates. Maximal degree in co-relation 81657. Up to 8595 conditions per place. [2024-05-12 13:37:30,949 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 615 selfloop transitions, 151 changer transitions 0/822 dead transitions. [2024-05-12 13:37:30,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 822 transitions, 15668 flow [2024-05-12 13:37:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 208 transitions. [2024-05-12 13:37:30,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5531914893617021 [2024-05-12 13:37:30,950 INFO L175 Difference]: Start difference. First operand has 226 places, 731 transitions, 13182 flow. Second operand 8 states and 208 transitions. [2024-05-12 13:37:30,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 822 transitions, 15668 flow [2024-05-12 13:37:31,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 822 transitions, 15357 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-05-12 13:37:31,694 INFO L231 Difference]: Finished difference. Result has 225 places, 739 transitions, 13352 flow [2024-05-12 13:37:31,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=12889, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13352, PETRI_PLACES=225, PETRI_TRANSITIONS=739} [2024-05-12 13:37:31,695 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 172 predicate places. [2024-05-12 13:37:31,695 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 739 transitions, 13352 flow [2024-05-12 13:37:31,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.4) internal successors, (124), 10 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:31,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:31,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:37:31,696 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:31,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:31,696 INFO L85 PathProgramCache]: Analyzing trace with hash 647335295, now seen corresponding path program 2 times [2024-05-12 13:37:31,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:31,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926567424] [2024-05-12 13:37:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:32,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:32,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926567424] [2024-05-12 13:37:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926567424] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:32,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437532975] [2024-05-12 13:37:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:32,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:32,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:32,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:32,764 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:32,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 739 transitions, 13352 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:32,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:32,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:32,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:35,111 INFO L124 PetriNetUnfolderBase]: 7501/11517 cut-off events. [2024-05-12 13:37:35,112 INFO L125 PetriNetUnfolderBase]: For 297646/297652 co-relation queries the response was YES. [2024-05-12 13:37:35,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85375 conditions, 11517 events. 7501/11517 cut-off events. For 297646/297652 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 71331 event pairs, 1860 based on Foata normal form. 8/11240 useless extension candidates. Maximal degree in co-relation 85261. Up to 10254 conditions per place. [2024-05-12 13:37:35,337 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 703 selfloop transitions, 78 changer transitions 0/788 dead transitions. [2024-05-12 13:37:35,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 788 transitions, 15219 flow [2024-05-12 13:37:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:35,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 163 transitions. [2024-05-12 13:37:35,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49544072948328266 [2024-05-12 13:37:35,341 INFO L175 Difference]: Start difference. First operand has 225 places, 739 transitions, 13352 flow. Second operand 7 states and 163 transitions. [2024-05-12 13:37:35,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 788 transitions, 15219 flow [2024-05-12 13:37:36,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 788 transitions, 14925 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:36,218 INFO L231 Difference]: Finished difference. Result has 227 places, 741 transitions, 13267 flow [2024-05-12 13:37:36,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13059, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=739, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13267, PETRI_PLACES=227, PETRI_TRANSITIONS=741} [2024-05-12 13:37:36,219 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 174 predicate places. [2024-05-12 13:37:36,219 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 741 transitions, 13267 flow [2024-05-12 13:37:36,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:36,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:36,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:37:36,228 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:36,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 903172715, now seen corresponding path program 3 times [2024-05-12 13:37:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:36,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364784647] [2024-05-12 13:37:36,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:37,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:37,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364784647] [2024-05-12 13:37:37,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364784647] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:37,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916374837] [2024-05-12 13:37:37,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:37,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:37,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:37,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:37,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:37,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:37,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 741 transitions, 13267 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:37,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:37,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:40,022 INFO L124 PetriNetUnfolderBase]: 7559/11691 cut-off events. [2024-05-12 13:37:40,022 INFO L125 PetriNetUnfolderBase]: For 306091/306093 co-relation queries the response was YES. [2024-05-12 13:37:40,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85725 conditions, 11691 events. 7559/11691 cut-off events. For 306091/306093 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 73184 event pairs, 2033 based on Foata normal form. 6/11381 useless extension candidates. Maximal degree in co-relation 85610. Up to 10517 conditions per place. [2024-05-12 13:37:40,159 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 738 selfloop transitions, 44 changer transitions 0/789 dead transitions. [2024-05-12 13:37:40,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 789 transitions, 15172 flow [2024-05-12 13:37:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-05-12 13:37:40,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48328267477203646 [2024-05-12 13:37:40,161 INFO L175 Difference]: Start difference. First operand has 227 places, 741 transitions, 13267 flow. Second operand 7 states and 159 transitions. [2024-05-12 13:37:40,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 789 transitions, 15172 flow [2024-05-12 13:37:40,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 789 transitions, 14986 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:40,836 INFO L231 Difference]: Finished difference. Result has 230 places, 749 transitions, 13355 flow [2024-05-12 13:37:40,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13089, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13355, PETRI_PLACES=230, PETRI_TRANSITIONS=749} [2024-05-12 13:37:40,837 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 177 predicate places. [2024-05-12 13:37:40,837 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 749 transitions, 13355 flow [2024-05-12 13:37:40,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:40,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:40,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:40,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:37:40,838 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:40,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:40,838 INFO L85 PathProgramCache]: Analyzing trace with hash 647328351, now seen corresponding path program 5 times [2024-05-12 13:37:40,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:40,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303618999] [2024-05-12 13:37:40,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:40,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:41,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:41,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303618999] [2024-05-12 13:37:41,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303618999] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:41,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:41,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:41,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479585057] [2024-05-12 13:37:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:41,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:41,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:41,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:41,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 749 transitions, 13355 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:41,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:41,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:41,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:44,510 INFO L124 PetriNetUnfolderBase]: 7625/11687 cut-off events. [2024-05-12 13:37:44,511 INFO L125 PetriNetUnfolderBase]: For 306330/306332 co-relation queries the response was YES. [2024-05-12 13:37:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86399 conditions, 11687 events. 7625/11687 cut-off events. For 306330/306332 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 72074 event pairs, 1871 based on Foata normal form. 4/11404 useless extension candidates. Maximal degree in co-relation 86282. Up to 10307 conditions per place. [2024-05-12 13:37:44,666 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 730 selfloop transitions, 106 changer transitions 0/843 dead transitions. [2024-05-12 13:37:44,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 843 transitions, 16081 flow [2024-05-12 13:37:44,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:44,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:37:44,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:37:44,668 INFO L175 Difference]: Start difference. First operand has 230 places, 749 transitions, 13355 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:37:44,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 843 transitions, 16081 flow [2024-05-12 13:37:45,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 843 transitions, 15975 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-05-12 13:37:45,440 INFO L231 Difference]: Finished difference. Result has 237 places, 786 transitions, 14239 flow [2024-05-12 13:37:45,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13257, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14239, PETRI_PLACES=237, PETRI_TRANSITIONS=786} [2024-05-12 13:37:45,441 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 184 predicate places. [2024-05-12 13:37:45,441 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 786 transitions, 14239 flow [2024-05-12 13:37:45,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:45,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:45,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:45,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:37:45,442 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:45,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:45,442 INFO L85 PathProgramCache]: Analyzing trace with hash 912435515, now seen corresponding path program 4 times [2024-05-12 13:37:45,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:45,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496138253] [2024-05-12 13:37:45,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:45,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:46,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:46,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496138253] [2024-05-12 13:37:46,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496138253] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:46,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:46,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:46,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854429955] [2024-05-12 13:37:46,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:46,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:46,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:46,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:46,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:46,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 786 transitions, 14239 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:46,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:46,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:46,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:49,114 INFO L124 PetriNetUnfolderBase]: 7643/11807 cut-off events. [2024-05-12 13:37:49,114 INFO L125 PetriNetUnfolderBase]: For 325935/325937 co-relation queries the response was YES. [2024-05-12 13:37:49,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88776 conditions, 11807 events. 7643/11807 cut-off events. For 325935/325937 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 74029 event pairs, 1950 based on Foata normal form. 6/11497 useless extension candidates. Maximal degree in co-relation 88655. Up to 10666 conditions per place. [2024-05-12 13:37:49,268 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 793 selfloop transitions, 30 changer transitions 0/830 dead transitions. [2024-05-12 13:37:49,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 830 transitions, 16154 flow [2024-05-12 13:37:49,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:37:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:37:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:37:49,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-05-12 13:37:49,270 INFO L175 Difference]: Start difference. First operand has 237 places, 786 transitions, 14239 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:37:49,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 830 transitions, 16154 flow [2024-05-12 13:37:50,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 830 transitions, 15877 flow, removed 129 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:50,044 INFO L231 Difference]: Finished difference. Result has 243 places, 792 transitions, 14140 flow [2024-05-12 13:37:50,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=13962, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14140, PETRI_PLACES=243, PETRI_TRANSITIONS=792} [2024-05-12 13:37:50,045 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-05-12 13:37:50,045 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 792 transitions, 14140 flow [2024-05-12 13:37:50,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:50,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:50,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:50,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:37:50,045 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:50,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:50,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1072976923, now seen corresponding path program 6 times [2024-05-12 13:37:50,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:50,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56377178] [2024-05-12 13:37:50,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:50,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:50,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:50,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56377178] [2024-05-12 13:37:50,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56377178] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:50,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:50,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:50,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461879462] [2024-05-12 13:37:50,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:50,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:50,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:50,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:50,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 792 transitions, 14140 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:50,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:50,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:50,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:53,776 INFO L124 PetriNetUnfolderBase]: 7697/11782 cut-off events. [2024-05-12 13:37:53,777 INFO L125 PetriNetUnfolderBase]: For 339482/339488 co-relation queries the response was YES. [2024-05-12 13:37:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90302 conditions, 11782 events. 7697/11782 cut-off events. For 339482/339488 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 72737 event pairs, 1848 based on Foata normal form. 8/11507 useless extension candidates. Maximal degree in co-relation 90178. Up to 10200 conditions per place. [2024-05-12 13:37:53,943 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 734 selfloop transitions, 135 changer transitions 0/876 dead transitions. [2024-05-12 13:37:53,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 876 transitions, 16887 flow [2024-05-12 13:37:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:53,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:37:53,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-05-12 13:37:53,945 INFO L175 Difference]: Start difference. First operand has 243 places, 792 transitions, 14140 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:37:53,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 876 transitions, 16887 flow [2024-05-12 13:37:54,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 876 transitions, 16773 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-05-12 13:37:54,742 INFO L231 Difference]: Finished difference. Result has 248 places, 812 transitions, 14764 flow [2024-05-12 13:37:54,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14026, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14764, PETRI_PLACES=248, PETRI_TRANSITIONS=812} [2024-05-12 13:37:54,743 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 195 predicate places. [2024-05-12 13:37:54,743 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 812 transitions, 14764 flow [2024-05-12 13:37:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:54,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:54,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:37:54,743 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:54,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1072972273, now seen corresponding path program 7 times [2024-05-12 13:37:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:54,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021624290] [2024-05-12 13:37:54,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:54,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:55,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:55,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021624290] [2024-05-12 13:37:55,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021624290] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:55,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:55,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624908706] [2024-05-12 13:37:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:55,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:55,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:55,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:55,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:55,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 812 transitions, 14764 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:55,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:55,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:55,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:58,408 INFO L124 PetriNetUnfolderBase]: 7749/11871 cut-off events. [2024-05-12 13:37:58,408 INFO L125 PetriNetUnfolderBase]: For 361690/361696 co-relation queries the response was YES. [2024-05-12 13:37:58,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92883 conditions, 11871 events. 7749/11871 cut-off events. For 361690/361696 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 73479 event pairs, 1859 based on Foata normal form. 8/11590 useless extension candidates. Maximal degree in co-relation 92757. Up to 10450 conditions per place. [2024-05-12 13:37:58,595 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 755 selfloop transitions, 123 changer transitions 0/885 dead transitions. [2024-05-12 13:37:58,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 885 transitions, 17078 flow [2024-05-12 13:37:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:58,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:37:58,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:37:58,604 INFO L175 Difference]: Start difference. First operand has 248 places, 812 transitions, 14764 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:37:58,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 885 transitions, 17078 flow [2024-05-12 13:37:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 885 transitions, 16833 flow, removed 113 selfloop flow, removed 2 redundant places. [2024-05-12 13:37:59,710 INFO L231 Difference]: Finished difference. Result has 254 places, 819 transitions, 14947 flow [2024-05-12 13:37:59,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14535, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=812, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=689, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14947, PETRI_PLACES=254, PETRI_TRANSITIONS=819} [2024-05-12 13:37:59,711 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 201 predicate places. [2024-05-12 13:37:59,711 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 819 transitions, 14947 flow [2024-05-12 13:37:59,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:59,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:59,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:59,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:37:59,712 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:59,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:59,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1538997375, now seen corresponding path program 1 times [2024-05-12 13:37:59,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:59,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344577187] [2024-05-12 13:37:59,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:59,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:59,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:00,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:00,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:00,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344577187] [2024-05-12 13:38:00,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344577187] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:00,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:00,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:00,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342611323] [2024-05-12 13:38:00,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:00,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:00,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:00,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:00,765 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 819 transitions, 14947 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:00,765 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:00,765 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:00,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:03,631 INFO L124 PetriNetUnfolderBase]: 7752/11879 cut-off events. [2024-05-12 13:38:03,632 INFO L125 PetriNetUnfolderBase]: For 370524/370526 co-relation queries the response was YES. [2024-05-12 13:38:03,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93250 conditions, 11879 events. 7752/11879 cut-off events. For 370524/370526 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 73717 event pairs, 2009 based on Foata normal form. 4/11593 useless extension candidates. Maximal degree in co-relation 93122. Up to 10801 conditions per place. [2024-05-12 13:38:03,777 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 813 selfloop transitions, 40 changer transitions 0/860 dead transitions. [2024-05-12 13:38:03,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 860 transitions, 16956 flow [2024-05-12 13:38:03,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:38:03,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:38:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-05-12 13:38:03,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-05-12 13:38:03,779 INFO L175 Difference]: Start difference. First operand has 254 places, 819 transitions, 14947 flow. Second operand 7 states and 156 transitions. [2024-05-12 13:38:03,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 860 transitions, 16956 flow [2024-05-12 13:38:04,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 860 transitions, 16651 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:04,610 INFO L231 Difference]: Finished difference. Result has 256 places, 825 transitions, 14888 flow [2024-05-12 13:38:04,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14666, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=779, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14888, PETRI_PLACES=256, PETRI_TRANSITIONS=825} [2024-05-12 13:38:04,611 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 203 predicate places. [2024-05-12 13:38:04,611 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 825 transitions, 14888 flow [2024-05-12 13:38:04,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:04,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:04,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:04,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:38:04,612 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:04,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 902935131, now seen corresponding path program 8 times [2024-05-12 13:38:04,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:04,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552897803] [2024-05-12 13:38:04,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:04,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:05,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:05,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:05,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552897803] [2024-05-12 13:38:05,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552897803] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:05,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369818804] [2024-05-12 13:38:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:05,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:05,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:05,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 825 transitions, 14888 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:05,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:05,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:05,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:08,582 INFO L124 PetriNetUnfolderBase]: 7752/11879 cut-off events. [2024-05-12 13:38:08,582 INFO L125 PetriNetUnfolderBase]: For 380500/380502 co-relation queries the response was YES. [2024-05-12 13:38:08,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93360 conditions, 11879 events. 7752/11879 cut-off events. For 380500/380502 co-relation queries the response was YES. Maximal size of possible extension queue 519. Compared 73682 event pairs, 2009 based on Foata normal form. 6/11595 useless extension candidates. Maximal degree in co-relation 93231. Up to 10803 conditions per place. [2024-05-12 13:38:08,743 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 834 selfloop transitions, 32 changer transitions 0/873 dead transitions. [2024-05-12 13:38:08,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 873 transitions, 16918 flow [2024-05-12 13:38:08,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:08,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-05-12 13:38:08,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2024-05-12 13:38:08,746 INFO L175 Difference]: Start difference. First operand has 256 places, 825 transitions, 14888 flow. Second operand 8 states and 178 transitions. [2024-05-12 13:38:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 873 transitions, 16918 flow [2024-05-12 13:38:09,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 873 transitions, 16768 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:09,684 INFO L231 Difference]: Finished difference. Result has 259 places, 829 transitions, 14908 flow [2024-05-12 13:38:09,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14750, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=825, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14908, PETRI_PLACES=259, PETRI_TRANSITIONS=829} [2024-05-12 13:38:09,685 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 206 predicate places. [2024-05-12 13:38:09,685 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 829 transitions, 14908 flow [2024-05-12 13:38:09,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:09,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:09,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:09,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:38:09,686 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:09,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:09,686 INFO L85 PathProgramCache]: Analyzing trace with hash -297353098, now seen corresponding path program 1 times [2024-05-12 13:38:09,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:09,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271901792] [2024-05-12 13:38:09,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:09,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:10,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:10,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:10,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271901792] [2024-05-12 13:38:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271901792] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:10,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:10,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088541934] [2024-05-12 13:38:10,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:10,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:10,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:10,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 829 transitions, 14908 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:10,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:10,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:10,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:13,717 INFO L124 PetriNetUnfolderBase]: 7983/12236 cut-off events. [2024-05-12 13:38:13,718 INFO L125 PetriNetUnfolderBase]: For 413578/413584 co-relation queries the response was YES. [2024-05-12 13:38:13,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96541 conditions, 12236 events. 7983/12236 cut-off events. For 413578/413584 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 76030 event pairs, 1091 based on Foata normal form. 20/11966 useless extension candidates. Maximal degree in co-relation 96411. Up to 9007 conditions per place. [2024-05-12 13:38:13,904 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 699 selfloop transitions, 258 changer transitions 0/964 dead transitions. [2024-05-12 13:38:13,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 964 transitions, 18421 flow [2024-05-12 13:38:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:13,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:13,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-05-12 13:38:13,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-05-12 13:38:13,911 INFO L175 Difference]: Start difference. First operand has 259 places, 829 transitions, 14908 flow. Second operand 10 states and 247 transitions. [2024-05-12 13:38:13,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 964 transitions, 18421 flow [2024-05-12 13:38:14,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 964 transitions, 18288 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:14,951 INFO L231 Difference]: Finished difference. Result has 267 places, 869 transitions, 16335 flow [2024-05-12 13:38:14,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=14775, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=829, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16335, PETRI_PLACES=267, PETRI_TRANSITIONS=869} [2024-05-12 13:38:14,952 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 214 predicate places. [2024-05-12 13:38:14,952 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 869 transitions, 16335 flow [2024-05-12 13:38:14,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:14,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:14,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:38:14,953 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:14,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1966249812, now seen corresponding path program 2 times [2024-05-12 13:38:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:14,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59509454] [2024-05-12 13:38:14,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:14,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:15,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:15,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:15,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59509454] [2024-05-12 13:38:15,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59509454] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:15,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:15,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:15,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600166105] [2024-05-12 13:38:15,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:15,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:15,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:15,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:15,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:16,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:16,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 869 transitions, 16335 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:16,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:16,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:16,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:19,324 INFO L124 PetriNetUnfolderBase]: 8185/12536 cut-off events. [2024-05-12 13:38:19,325 INFO L125 PetriNetUnfolderBase]: For 463064/463070 co-relation queries the response was YES. [2024-05-12 13:38:19,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103482 conditions, 12536 events. 8185/12536 cut-off events. For 463064/463070 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 78192 event pairs, 1661 based on Foata normal form. 24/12270 useless extension candidates. Maximal degree in co-relation 103347. Up to 9970 conditions per place. [2024-05-12 13:38:19,577 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 700 selfloop transitions, 256 changer transitions 0/963 dead transitions. [2024-05-12 13:38:19,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 963 transitions, 19185 flow [2024-05-12 13:38:19,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:19,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:19,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 242 transitions. [2024-05-12 13:38:19,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148936170212766 [2024-05-12 13:38:19,581 INFO L175 Difference]: Start difference. First operand has 267 places, 869 transitions, 16335 flow. Second operand 10 states and 242 transitions. [2024-05-12 13:38:19,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 963 transitions, 19185 flow [2024-05-12 13:38:21,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 963 transitions, 18915 flow, removed 98 selfloop flow, removed 3 redundant places. [2024-05-12 13:38:21,327 INFO L231 Difference]: Finished difference. Result has 275 places, 882 transitions, 16875 flow [2024-05-12 13:38:21,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16091, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=869, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=623, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16875, PETRI_PLACES=275, PETRI_TRANSITIONS=882} [2024-05-12 13:38:21,329 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 222 predicate places. [2024-05-12 13:38:21,329 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 882 transitions, 16875 flow [2024-05-12 13:38:21,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:21,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:21,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:21,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:38:21,331 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:21,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:21,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2146013084, now seen corresponding path program 3 times [2024-05-12 13:38:21,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:21,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474193218] [2024-05-12 13:38:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:21,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474193218] [2024-05-12 13:38:22,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474193218] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:22,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:22,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400436621] [2024-05-12 13:38:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:22,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:22,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:22,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 882 transitions, 16875 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:22,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:22,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:22,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:25,858 INFO L124 PetriNetUnfolderBase]: 8305/12720 cut-off events. [2024-05-12 13:38:25,859 INFO L125 PetriNetUnfolderBase]: For 473867/473873 co-relation queries the response was YES. [2024-05-12 13:38:26,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106036 conditions, 12720 events. 8305/12720 cut-off events. For 473867/473873 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 79637 event pairs, 1654 based on Foata normal form. 20/12450 useless extension candidates. Maximal degree in co-relation 105898. Up to 9968 conditions per place. [2024-05-12 13:38:26,078 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 704 selfloop transitions, 261 changer transitions 0/972 dead transitions. [2024-05-12 13:38:26,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 972 transitions, 19625 flow [2024-05-12 13:38:26,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2024-05-12 13:38:26,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234042553191489 [2024-05-12 13:38:26,079 INFO L175 Difference]: Start difference. First operand has 275 places, 882 transitions, 16875 flow. Second operand 10 states and 246 transitions. [2024-05-12 13:38:26,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 972 transitions, 19625 flow [2024-05-12 13:38:27,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 972 transitions, 19011 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:27,975 INFO L231 Difference]: Finished difference. Result has 280 places, 887 transitions, 16926 flow [2024-05-12 13:38:27,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16261, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=882, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=16926, PETRI_PLACES=280, PETRI_TRANSITIONS=887} [2024-05-12 13:38:27,976 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 227 predicate places. [2024-05-12 13:38:27,976 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 887 transitions, 16926 flow [2024-05-12 13:38:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:27,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:27,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:27,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:38:27,977 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:27,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:27,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2062262402, now seen corresponding path program 4 times [2024-05-12 13:38:27,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279562106] [2024-05-12 13:38:27,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:29,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:29,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279562106] [2024-05-12 13:38:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279562106] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:29,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627085296] [2024-05-12 13:38:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:29,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:29,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 887 transitions, 16926 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:29,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:29,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:29,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:32,882 INFO L124 PetriNetUnfolderBase]: 8845/13575 cut-off events. [2024-05-12 13:38:32,882 INFO L125 PetriNetUnfolderBase]: For 544734/544740 co-relation queries the response was YES. [2024-05-12 13:38:33,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114717 conditions, 13575 events. 8845/13575 cut-off events. For 544734/544740 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 86196 event pairs, 1852 based on Foata normal form. 20/13295 useless extension candidates. Maximal degree in co-relation 114577. Up to 10787 conditions per place. [2024-05-12 13:38:33,116 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 794 selfloop transitions, 202 changer transitions 0/1003 dead transitions. [2024-05-12 13:38:33,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1003 transitions, 20112 flow [2024-05-12 13:38:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:33,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 247 transitions. [2024-05-12 13:38:33,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5255319148936171 [2024-05-12 13:38:33,117 INFO L175 Difference]: Start difference. First operand has 280 places, 887 transitions, 16926 flow. Second operand 10 states and 247 transitions. [2024-05-12 13:38:33,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1003 transitions, 20112 flow [2024-05-12 13:38:34,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 1003 transitions, 19849 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:34,865 INFO L231 Difference]: Finished difference. Result has 287 places, 899 transitions, 17420 flow [2024-05-12 13:38:34,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16668, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=887, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=688, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17420, PETRI_PLACES=287, PETRI_TRANSITIONS=899} [2024-05-12 13:38:34,866 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 234 predicate places. [2024-05-12 13:38:34,866 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 899 transitions, 17420 flow [2024-05-12 13:38:34,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:34,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:34,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:34,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:38:34,866 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:34,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:34,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2062258682, now seen corresponding path program 5 times [2024-05-12 13:38:34,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:34,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526828853] [2024-05-12 13:38:34,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:34,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526828853] [2024-05-12 13:38:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526828853] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:36,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:36,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:36,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519663971] [2024-05-12 13:38:36,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:36,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:36,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:36,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:36,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:36,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 899 transitions, 17420 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:36,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:36,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:36,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:40,313 INFO L124 PetriNetUnfolderBase]: 9070/13879 cut-off events. [2024-05-12 13:38:40,313 INFO L125 PetriNetUnfolderBase]: For 581820/581826 co-relation queries the response was YES. [2024-05-12 13:38:40,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119522 conditions, 13879 events. 9070/13879 cut-off events. For 581820/581826 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 88051 event pairs, 1936 based on Foata normal form. 24/13613 useless extension candidates. Maximal degree in co-relation 119378. Up to 11749 conditions per place. [2024-05-12 13:38:40,522 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 793 selfloop transitions, 194 changer transitions 0/994 dead transitions. [2024-05-12 13:38:40,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 994 transitions, 20241 flow [2024-05-12 13:38:40,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 238 transitions. [2024-05-12 13:38:40,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-05-12 13:38:40,524 INFO L175 Difference]: Start difference. First operand has 287 places, 899 transitions, 17420 flow. Second operand 10 states and 238 transitions. [2024-05-12 13:38:40,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 994 transitions, 20241 flow [2024-05-12 13:38:42,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 994 transitions, 19948 flow, removed 31 selfloop flow, removed 5 redundant places. [2024-05-12 13:38:42,682 INFO L231 Difference]: Finished difference. Result has 293 places, 912 transitions, 17901 flow [2024-05-12 13:38:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17133, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=899, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=713, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17901, PETRI_PLACES=293, PETRI_TRANSITIONS=912} [2024-05-12 13:38:42,683 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 240 predicate places. [2024-05-12 13:38:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 912 transitions, 17901 flow [2024-05-12 13:38:42,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:42,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:42,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:42,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:38:42,684 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:42,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2062114532, now seen corresponding path program 6 times [2024-05-12 13:38:42,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:42,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502765884] [2024-05-12 13:38:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:42,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:43,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:43,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:43,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502765884] [2024-05-12 13:38:43,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502765884] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:43,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:43,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:43,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701699722] [2024-05-12 13:38:43,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:43,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:43,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:43,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:43,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:43,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:43,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 912 transitions, 17901 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:43,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:43,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:48,195 INFO L124 PetriNetUnfolderBase]: 9057/13856 cut-off events. [2024-05-12 13:38:48,195 INFO L125 PetriNetUnfolderBase]: For 570546/570552 co-relation queries the response was YES. [2024-05-12 13:38:48,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119631 conditions, 13856 events. 9057/13856 cut-off events. For 570546/570552 co-relation queries the response was YES. Maximal size of possible extension queue 598. Compared 87788 event pairs, 1945 based on Foata normal form. 24/13590 useless extension candidates. Maximal degree in co-relation 119484. Up to 11826 conditions per place. [2024-05-12 13:38:48,427 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 797 selfloop transitions, 194 changer transitions 0/998 dead transitions. [2024-05-12 13:38:48,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 998 transitions, 20559 flow [2024-05-12 13:38:48,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-05-12 13:38:48,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:38:48,437 INFO L175 Difference]: Start difference. First operand has 293 places, 912 transitions, 17901 flow. Second operand 10 states and 235 transitions. [2024-05-12 13:38:48,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 998 transitions, 20559 flow [2024-05-12 13:38:50,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 998 transitions, 19568 flow, removed 149 selfloop flow, removed 8 redundant places. [2024-05-12 13:38:50,329 INFO L231 Difference]: Finished difference. Result has 297 places, 918 transitions, 17558 flow [2024-05-12 13:38:50,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=16943, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=719, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=17558, PETRI_PLACES=297, PETRI_TRANSITIONS=918} [2024-05-12 13:38:50,330 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 244 predicate places. [2024-05-12 13:38:50,330 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 918 transitions, 17558 flow [2024-05-12 13:38:50,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:50,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:50,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:50,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:38:50,331 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:50,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:50,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2062108580, now seen corresponding path program 1 times [2024-05-12 13:38:50,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:50,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400585560] [2024-05-12 13:38:50,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:50,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:51,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:51,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400585560] [2024-05-12 13:38:51,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400585560] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:51,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:51,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680655350] [2024-05-12 13:38:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:51,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:51,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:51,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:51,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 918 transitions, 17558 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:51,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:51,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:55,785 INFO L124 PetriNetUnfolderBase]: 9057/13930 cut-off events. [2024-05-12 13:38:55,785 INFO L125 PetriNetUnfolderBase]: For 553498/553504 co-relation queries the response was YES. [2024-05-12 13:38:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119182 conditions, 13930 events. 9057/13930 cut-off events. For 553498/553504 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 89129 event pairs, 1930 based on Foata normal form. 8/13623 useless extension candidates. Maximal degree in co-relation 119032. Up to 11895 conditions per place. [2024-05-12 13:38:55,995 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 792 selfloop transitions, 207 changer transitions 0/1006 dead transitions. [2024-05-12 13:38:55,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 1006 transitions, 20251 flow [2024-05-12 13:38:55,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:38:55,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:38:55,997 INFO L175 Difference]: Start difference. First operand has 297 places, 918 transitions, 17558 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:38:55,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 1006 transitions, 20251 flow [2024-05-12 13:38:57,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 1006 transitions, 19773 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:57,801 INFO L231 Difference]: Finished difference. Result has 300 places, 921 transitions, 17632 flow [2024-05-12 13:38:57,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17116, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=918, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=711, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=17632, PETRI_PLACES=300, PETRI_TRANSITIONS=921} [2024-05-12 13:38:57,802 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 247 predicate places. [2024-05-12 13:38:57,803 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 921 transitions, 17632 flow [2024-05-12 13:38:57,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:57,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:57,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:57,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:38:57,803 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:57,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1517481880, now seen corresponding path program 2 times [2024-05-12 13:38:57,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:57,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407264630] [2024-05-12 13:38:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:58,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:58,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407264630] [2024-05-12 13:38:58,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407264630] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:58,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:58,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498316701] [2024-05-12 13:38:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:58,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:58,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:59,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:59,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 921 transitions, 17632 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:59,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:59,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:59,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:03,359 INFO L124 PetriNetUnfolderBase]: 9099/13958 cut-off events. [2024-05-12 13:39:03,359 INFO L125 PetriNetUnfolderBase]: For 567165/567171 co-relation queries the response was YES. [2024-05-12 13:39:03,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120005 conditions, 13958 events. 9099/13958 cut-off events. For 567165/567171 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 88965 event pairs, 2123 based on Foata normal form. 8/13664 useless extension candidates. Maximal degree in co-relation 119854. Up to 12487 conditions per place. [2024-05-12 13:39:03,571 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 892 selfloop transitions, 116 changer transitions 0/1015 dead transitions. [2024-05-12 13:39:03,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 1015 transitions, 20273 flow [2024-05-12 13:39:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:39:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:39:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 253 transitions. [2024-05-12 13:39:03,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:39:03,573 INFO L175 Difference]: Start difference. First operand has 300 places, 921 transitions, 17632 flow. Second operand 11 states and 253 transitions. [2024-05-12 13:39:03,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 1015 transitions, 20273 flow [2024-05-12 13:39:05,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 1015 transitions, 19812 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-05-12 13:39:05,574 INFO L231 Difference]: Finished difference. Result has 304 places, 923 transitions, 17475 flow [2024-05-12 13:39:05,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17171, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=921, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=17475, PETRI_PLACES=304, PETRI_TRANSITIONS=923} [2024-05-12 13:39:05,576 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 251 predicate places. [2024-05-12 13:39:05,576 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 923 transitions, 17475 flow [2024-05-12 13:39:05,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:05,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:05,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:05,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:39:05,577 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:05,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1517274118, now seen corresponding path program 7 times [2024-05-12 13:39:05,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:05,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639481428] [2024-05-12 13:39:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:06,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:06,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:06,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639481428] [2024-05-12 13:39:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639481428] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:06,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:06,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:06,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907232708] [2024-05-12 13:39:06,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:06,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:06,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:06,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 923 transitions, 17475 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:06,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:06,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:06,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:11,203 INFO L124 PetriNetUnfolderBase]: 9253/14175 cut-off events. [2024-05-12 13:39:11,203 INFO L125 PetriNetUnfolderBase]: For 606594/606600 co-relation queries the response was YES. [2024-05-12 13:39:11,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121877 conditions, 14175 events. 9253/14175 cut-off events. For 606594/606600 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 90379 event pairs, 2168 based on Foata normal form. 24/13903 useless extension candidates. Maximal degree in co-relation 121725. Up to 12563 conditions per place. [2024-05-12 13:39:11,389 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 889 selfloop transitions, 123 changer transitions 0/1019 dead transitions. [2024-05-12 13:39:11,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 1019 transitions, 20157 flow [2024-05-12 13:39:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:39:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:39:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2024-05-12 13:39:11,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48404255319148937 [2024-05-12 13:39:11,391 INFO L175 Difference]: Start difference. First operand has 304 places, 923 transitions, 17475 flow. Second operand 12 states and 273 transitions. [2024-05-12 13:39:11,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 1019 transitions, 20157 flow [2024-05-12 13:39:13,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 1019 transitions, 19928 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-05-12 13:39:13,162 INFO L231 Difference]: Finished difference. Result has 310 places, 929 transitions, 17681 flow [2024-05-12 13:39:13,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=17246, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=923, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=802, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=17681, PETRI_PLACES=310, PETRI_TRANSITIONS=929} [2024-05-12 13:39:13,163 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 257 predicate places. [2024-05-12 13:39:13,163 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 929 transitions, 17681 flow [2024-05-12 13:39:13,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:13,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:13,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:13,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:39:13,164 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:13,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash -924002912, now seen corresponding path program 3 times [2024-05-12 13:39:13,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:13,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889947743] [2024-05-12 13:39:13,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:14,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:14,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889947743] [2024-05-12 13:39:14,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889947743] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:14,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:14,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:39:14,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133372362] [2024-05-12 13:39:14,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:39:14,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:14,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:39:14,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:39:14,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:14,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 929 transitions, 17681 flow. Second operand has 11 states, 11 states have (on average 11.363636363636363) internal successors, (125), 11 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:39:14,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:14,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:14,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand