./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe003_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/safe003_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/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-05-07_14-17-48.files/protection/safe003_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 13:34:41,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:34:41,066 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:34:41,069 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:34:41,069 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:34:41,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:34:41,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:34:41,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:34:41,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:34:41,085 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:34:41,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:34:41,086 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:34:41,086 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:34:41,086 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:34:41,087 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:34:41,087 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:34:41,087 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:34:41,087 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:34:41,088 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:34:41,093 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:34:41,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:34:41,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:34:41,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:34:41,097 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:34:41,098 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:34:41,098 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:34:41,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:34:41,098 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:34:41,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:34:41,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:34:41,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:34:41,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:34:41,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:34:41,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:34:41,101 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:34:41,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:34:41,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:34:41,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:34:41,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:34:41,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:34:41,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:34:41,318 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:34:41,318 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:34:41,319 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:34:42,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:34:42,570 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:34:42,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:34:42,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ad71d22/32bbd9b7a09b40a1922465831a036ae0/FLAG101ef648f [2024-05-12 13:34:42,603 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54ad71d22/32bbd9b7a09b40a1922465831a036ae0 [2024-05-12 13:34:42,606 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:34:42,606 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:34:42,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-05-12 13:34:42,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:34:42,768 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:34:42,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:34:42,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:34:42,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:34:42,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:34:42" (1/2) ... [2024-05-12 13:34:42,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326fc62f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:42, skipping insertion in model container [2024-05-12 13:34:42,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:34:42" (1/2) ... [2024-05-12 13:34:42,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@11902974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:34:42, skipping insertion in model container [2024-05-12 13:34:42,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:42" (2/2) ... [2024-05-12 13:34:42,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@326fc62f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:34:42, skipping insertion in model container [2024-05-12 13:34:42,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:42" (2/2) ... [2024-05-12 13:34:42,780 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:34:42,848 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:34:42,849 INFO L97 edCorrectnessWitness]: Location invariant before [L852-L852] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 2) && __unbuffered_p2_EBX <= 127) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) [2024-05-12 13:34:42,849 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 2) && __unbuffered_p2_EBX <= 127) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) [2024-05-12 13:34:42,849 INFO L97 edCorrectnessWitness]: Location invariant before [L851-L851] (((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y$mem_tmp && y$mem_tmp <= 2) && y$mem_tmp <= 127) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((((0 <= y$w_buff1 && y$w_buff1 <= 2) && y$w_buff1 <= 127) && y$w_buff1 % 2 == 0) && (y$w_buff1 == 0 || y$w_buff1 == 2)))) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((((0 <= y$w_buff0 && y$w_buff0 <= 2) && y$w_buff0 <= 127) && y$w_buff0 % 2 == 0) && (y$w_buff0 == 0 || y$w_buff0 == 2)))) && (! multithreaded || (((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 2) && __unbuffered_p2_EBX <= 127) && ((__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) || __unbuffered_p2_EBX == 2)))) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 2) && __unbuffered_p2_EAX <= 127) && ((__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) || __unbuffered_p2_EAX == 2))) [2024-05-12 13:34:42,849 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:34:42,850 INFO L106 edCorrectnessWitness]: ghost_update [L847-L847] multithreaded = 1; [2024-05-12 13:34:42,889 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:34:43,012 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/safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[986,999] [2024-05-12 13:34:43,151 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:34:43,162 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:34:43,195 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/safe003_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 13:34:43,292 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:34:43,322 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:34:43,326 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:34:43 WrapperNode [2024-05-12 13:34:43,327 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:34:43,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:34:43,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:34:43,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:34:43,334 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,370 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,414 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-05-12 13:34:43,415 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:34:43,416 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:34:43,416 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:34:43,416 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:34:43,424 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,425 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,436 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,453 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 13:34:43,453 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,454 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,486 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,488 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,490 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,492 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:34:43,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:34:43,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:34:43,513 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:34:43,514 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 01:34:43" (1/1) ... [2024-05-12 13:34:43,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:34:43,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:34:43,542 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 13:34:43,544 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 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:34:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:34:43,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:34:43,573 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:34:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:34:43,573 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:34:43,573 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:34:43,574 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:34:43,575 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:34:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:34:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:34:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:34:43,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:34:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:34:43,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:34:43,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:34:43,579 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 13:34:43,685 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:34:43,686 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:34:44,037 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:34:44,037 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:34:44,209 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:34:44,210 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:34:44,210 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:34:44 BoogieIcfgContainer [2024-05-12 13:34:44,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:34:44,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:34:44,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:34:44,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:34:44,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:34:42" (1/4) ... [2024-05-12 13:34:44,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ec684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:34:44, skipping insertion in model container [2024-05-12 13:34:44,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:34:42" (2/4) ... [2024-05-12 13:34:44,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ec684 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:34:44, skipping insertion in model container [2024-05-12 13:34:44,218 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 01:34:43" (3/4) ... [2024-05-12 13:34:44,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@143ec684 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:34:44, skipping insertion in model container [2024-05-12 13:34:44,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:34:44" (4/4) ... [2024-05-12 13:34:44,220 INFO L112 eAbstractionObserver]: Analyzing ICFG safe003_power.oepc_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-05-12 13:34:44,233 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:34:44,233 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:34:44,234 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:34:44,269 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:34:44,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:34:44,314 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-05-12 13:34:44,314 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:34:44,316 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 71 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 13:34:44,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 106 flow [2024-05-12 13:34:44,320 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 97 flow [2024-05-12 13:34:44,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:34:44,337 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;@1bf3a11a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:34:44,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:34:44,341 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:34:44,342 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:34:44,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:34:44,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:44,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:34:44,343 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 13:34:44,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:44,349 INFO L85 PathProgramCache]: Analyzing trace with hash 279610476, now seen corresponding path program 1 times [2024-05-12 13:34:44,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:44,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424432413] [2024-05-12 13:34:44,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:44,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:45,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:45,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424432413] [2024-05-12 13:34:45,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424432413] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:45,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:45,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:34:45,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278438537] [2024-05-12 13:34:45,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:45,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:34:45,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:34:45,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:34:45,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:45,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 13:34:45,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:45,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:45,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:46,345 INFO L124 PetriNetUnfolderBase]: 4210/6693 cut-off events. [2024-05-12 13:34:46,345 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2024-05-12 13:34:46,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12839 conditions, 6693 events. 4210/6693 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 41506 event pairs, 2523 based on Foata normal form. 214/6392 useless extension candidates. Maximal degree in co-relation 12824. Up to 6001 conditions per place. [2024-05-12 13:34:46,380 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 48 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2024-05-12 13:34:46,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 245 flow [2024-05-12 13:34:46,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:34:46,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:34:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-05-12 13:34:46,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-05-12 13:34:46,392 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 97 flow. Second operand 3 states and 94 transitions. [2024-05-12 13:34:46,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 245 flow [2024-05-12 13:34:46,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 240 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:46,400 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 129 flow [2024-05-12 13:34:46,401 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 13:34:46,405 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:34:46,405 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 129 flow [2024-05-12 13:34:46,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 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 13:34:46,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:46,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:34:46,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:34:46,406 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 13:34:46,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:46,407 INFO L85 PathProgramCache]: Analyzing trace with hash 279611264, now seen corresponding path program 1 times [2024-05-12 13:34:46,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:46,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233946968] [2024-05-12 13:34:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:46,474 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 13:34:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233946968] [2024-05-12 13:34:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233946968] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:46,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:46,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:34:46,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704374861] [2024-05-12 13:34:46,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:46,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:34:46,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:46,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:34:46,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:34:46,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 47 [2024-05-12 13:34:46,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 13:34:46,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:46,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 47 [2024-05-12 13:34:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:46,808 INFO L124 PetriNetUnfolderBase]: 1220/2207 cut-off events. [2024-05-12 13:34:46,808 INFO L125 PetriNetUnfolderBase]: For 210/210 co-relation queries the response was YES. [2024-05-12 13:34:46,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 2207 events. 1220/2207 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14465 event pairs, 413 based on Foata normal form. 0/2077 useless extension candidates. Maximal degree in co-relation 4371. Up to 1490 conditions per place. [2024-05-12 13:34:46,822 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 41 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-05-12 13:34:46,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 248 flow [2024-05-12 13:34:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:34:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:34:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-05-12 13:34:46,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7375886524822695 [2024-05-12 13:34:46,824 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 129 flow. Second operand 3 states and 104 transitions. [2024-05-12 13:34:46,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 248 flow [2024-05-12 13:34:46,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:46,826 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 122 flow [2024-05-12 13:34:46,826 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 13:34:46,827 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-05-12 13:34:46,827 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 122 flow [2024-05-12 13:34:46,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 13:34:46,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:46,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:46,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:34:46,828 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 13:34:46,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1877217430, now seen corresponding path program 1 times [2024-05-12 13:34:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557502211] [2024-05-12 13:34:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:47,393 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 13:34:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557502211] [2024-05-12 13:34:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557502211] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:47,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:47,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:34:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445054366] [2024-05-12 13:34:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:47,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:34:47,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:47,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:34:47,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:34:47,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-05-12 13:34:47,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:34:47,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:47,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-05-12 13:34:47,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:48,007 INFO L124 PetriNetUnfolderBase]: 3639/5800 cut-off events. [2024-05-12 13:34:48,007 INFO L125 PetriNetUnfolderBase]: For 1212/1216 co-relation queries the response was YES. [2024-05-12 13:34:48,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12421 conditions, 5800 events. 3639/5800 cut-off events. For 1212/1216 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 35148 event pairs, 2248 based on Foata normal form. 8/5621 useless extension candidates. Maximal degree in co-relation 12405. Up to 5171 conditions per place. [2024-05-12 13:34:48,032 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 56 selfloop transitions, 8 changer transitions 2/75 dead transitions. [2024-05-12 13:34:48,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 75 transitions, 332 flow [2024-05-12 13:34:48,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:34:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:34:48,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 114 transitions. [2024-05-12 13:34:48,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-05-12 13:34:48,034 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 122 flow. Second operand 4 states and 114 transitions. [2024-05-12 13:34:48,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 75 transitions, 332 flow [2024-05-12 13:34:48,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 324 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:34:48,036 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 181 flow [2024-05-12 13:34:48,036 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=181, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-05-12 13:34:48,037 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2024-05-12 13:34:48,037 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 181 flow [2024-05-12 13:34:48,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 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 13:34:48,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:48,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:34:48,038 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 13:34:48,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:48,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1935803617, now seen corresponding path program 1 times [2024-05-12 13:34:48,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:48,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849807404] [2024-05-12 13:34:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:48,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:48,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:48,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849807404] [2024-05-12 13:34:48,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849807404] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:48,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:48,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 13:34:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057779253] [2024-05-12 13:34:48,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:34:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:34:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:34:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:48,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:48,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:48,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:48,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:49,523 INFO L124 PetriNetUnfolderBase]: 3956/6354 cut-off events. [2024-05-12 13:34:49,523 INFO L125 PetriNetUnfolderBase]: For 2545/2545 co-relation queries the response was YES. [2024-05-12 13:34:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14962 conditions, 6354 events. 3956/6354 cut-off events. For 2545/2545 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 39187 event pairs, 2015 based on Foata normal form. 6/6135 useless extension candidates. Maximal degree in co-relation 14944. Up to 5545 conditions per place. [2024-05-12 13:34:49,561 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 78 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2024-05-12 13:34:49,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 97 transitions, 495 flow [2024-05-12 13:34:49,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:34:49,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:34:49,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 137 transitions. [2024-05-12 13:34:49,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829787234042553 [2024-05-12 13:34:49,565 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 181 flow. Second operand 5 states and 137 transitions. [2024-05-12 13:34:49,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 97 transitions, 495 flow [2024-05-12 13:34:49,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 97 transitions, 478 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:49,569 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 265 flow [2024-05-12 13:34:49,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=170, 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=265, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2024-05-12 13:34:49,571 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2024-05-12 13:34:49,571 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 265 flow [2024-05-12 13:34:49,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:49,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:49,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:49,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:34:49,572 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 13:34:49,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash 545306937, now seen corresponding path program 1 times [2024-05-12 13:34:49,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:49,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4803740] [2024-05-12 13:34:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:50,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:50,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4803740] [2024-05-12 13:34:50,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4803740] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:50,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:50,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:34:50,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357303743] [2024-05-12 13:34:50,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:50,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:34:50,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:50,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:34:50,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:34:50,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:50,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 265 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:50,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:50,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:50,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:51,145 INFO L124 PetriNetUnfolderBase]: 4009/6425 cut-off events. [2024-05-12 13:34:51,145 INFO L125 PetriNetUnfolderBase]: For 4276/4276 co-relation queries the response was YES. [2024-05-12 13:34:51,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16319 conditions, 6425 events. 4009/6425 cut-off events. For 4276/4276 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 39725 event pairs, 1709 based on Foata normal form. 6/6206 useless extension candidates. Maximal degree in co-relation 16297. Up to 5558 conditions per place. [2024-05-12 13:34:51,180 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 89 selfloop transitions, 17 changer transitions 0/114 dead transitions. [2024-05-12 13:34:51,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 114 transitions, 619 flow [2024-05-12 13:34:51,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:34:51,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:34:51,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 165 transitions. [2024-05-12 13:34:51,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851063829787234 [2024-05-12 13:34:51,187 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 265 flow. Second operand 6 states and 165 transitions. [2024-05-12 13:34:51,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 114 transitions, 619 flow [2024-05-12 13:34:51,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 615 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-05-12 13:34:51,195 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 342 flow [2024-05-12 13:34:51,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=261, 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2024-05-12 13:34:51,197 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 14 predicate places. [2024-05-12 13:34:51,197 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 342 flow [2024-05-12 13:34:51,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:51,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:51,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:51,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:34:51,198 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 13:34:51,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -275352272, now seen corresponding path program 1 times [2024-05-12 13:34:51,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:51,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422815586] [2024-05-12 13:34:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:51,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:51,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:52,159 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 13:34:52,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:52,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422815586] [2024-05-12 13:34:52,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422815586] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:52,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:52,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:34:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626357491] [2024-05-12 13:34:52,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:52,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:34:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:34:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:34:52,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:34:52,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 342 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:52,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:52,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:34:52,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:53,110 INFO L124 PetriNetUnfolderBase]: 4169/6657 cut-off events. [2024-05-12 13:34:53,111 INFO L125 PetriNetUnfolderBase]: For 6975/6975 co-relation queries the response was YES. [2024-05-12 13:34:53,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19032 conditions, 6657 events. 4169/6657 cut-off events. For 6975/6975 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 41228 event pairs, 1375 based on Foata normal form. 18/6450 useless extension candidates. Maximal degree in co-relation 19007. Up to 5590 conditions per place. [2024-05-12 13:34:53,145 INFO L140 encePairwiseOnDemand]: 33/47 looper letters, 100 selfloop transitions, 21 changer transitions 0/129 dead transitions. [2024-05-12 13:34:53,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 129 transitions, 764 flow [2024-05-12 13:34:53,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:53,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-05-12 13:34:53,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805471124620061 [2024-05-12 13:34:53,146 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 342 flow. Second operand 7 states and 191 transitions. [2024-05-12 13:34:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 129 transitions, 764 flow [2024-05-12 13:34:53,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 129 transitions, 729 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:34:53,152 INFO L231 Difference]: Finished difference. Result has 69 places, 70 transitions, 377 flow [2024-05-12 13:34:53,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=377, PETRI_PLACES=69, PETRI_TRANSITIONS=70} [2024-05-12 13:34:53,153 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 16 predicate places. [2024-05-12 13:34:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 70 transitions, 377 flow [2024-05-12 13:34:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:34:53,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:53,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:34:53,154 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 13:34:53,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1322777591, now seen corresponding path program 1 times [2024-05-12 13:34:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:53,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934964455] [2024-05-12 13:34:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:53,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:53,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:53,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934964455] [2024-05-12 13:34:53,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934964455] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:53,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:53,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:34:53,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033486959] [2024-05-12 13:34:53,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:53,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:34:53,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:53,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:34:53,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:34:53,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:53,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 70 transitions, 377 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 13:34:53,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:53,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:53,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:54,814 INFO L124 PetriNetUnfolderBase]: 4763/7548 cut-off events. [2024-05-12 13:34:54,814 INFO L125 PetriNetUnfolderBase]: For 10670/10673 co-relation queries the response was YES. [2024-05-12 13:34:54,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22966 conditions, 7548 events. 4763/7548 cut-off events. For 10670/10673 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 46042 event pairs, 2220 based on Foata normal form. 6/7309 useless extension candidates. Maximal degree in co-relation 22940. Up to 6758 conditions per place. [2024-05-12 13:34:54,861 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 74 selfloop transitions, 15 changer transitions 0/96 dead transitions. [2024-05-12 13:34:54,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 96 transitions, 651 flow [2024-05-12 13:34:54,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:34:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:34:54,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 112 transitions. [2024-05-12 13:34:54,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4765957446808511 [2024-05-12 13:34:54,863 INFO L175 Difference]: Start difference. First operand has 69 places, 70 transitions, 377 flow. Second operand 5 states and 112 transitions. [2024-05-12 13:34:54,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 96 transitions, 651 flow [2024-05-12 13:34:54,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 613 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-05-12 13:34:54,869 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 447 flow [2024-05-12 13:34:54,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2024-05-12 13:34:54,869 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 17 predicate places. [2024-05-12 13:34:54,869 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 447 flow [2024-05-12 13:34:54,870 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 13:34:54,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:54,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:54,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:34:54,870 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 13:34:54,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash -85021009, now seen corresponding path program 1 times [2024-05-12 13:34:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:54,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271731576] [2024-05-12 13:34:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:55,716 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 13:34:55,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:55,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271731576] [2024-05-12 13:34:55,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271731576] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:55,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:55,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:55,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810964797] [2024-05-12 13:34:55,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:55,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:55,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:55,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:55,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:55,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 447 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 13:34:55,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:55,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:55,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:56,831 INFO L124 PetriNetUnfolderBase]: 4926/7763 cut-off events. [2024-05-12 13:34:56,832 INFO L125 PetriNetUnfolderBase]: For 13941/13947 co-relation queries the response was YES. [2024-05-12 13:34:56,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24741 conditions, 7763 events. 4926/7763 cut-off events. For 13941/13947 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 47906 event pairs, 1577 based on Foata normal form. 9/7529 useless extension candidates. Maximal degree in co-relation 24712. Up to 6614 conditions per place. [2024-05-12 13:34:56,881 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 107 selfloop transitions, 23 changer transitions 0/137 dead transitions. [2024-05-12 13:34:56,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 951 flow [2024-05-12 13:34:56,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:56,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:56,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-05-12 13:34:56,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-05-12 13:34:56,883 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 447 flow. Second operand 7 states and 174 transitions. [2024-05-12 13:34:56,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 951 flow [2024-05-12 13:34:56,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 137 transitions, 939 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-05-12 13:34:56,893 INFO L231 Difference]: Finished difference. Result has 76 places, 84 transitions, 535 flow [2024-05-12 13:34:56,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=535, PETRI_PLACES=76, PETRI_TRANSITIONS=84} [2024-05-12 13:34:56,894 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 23 predicate places. [2024-05-12 13:34:56,894 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 84 transitions, 535 flow [2024-05-12 13:34:56,895 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 13:34:56,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:56,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:56,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:34:56,895 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 13:34:56,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash -84900853, now seen corresponding path program 1 times [2024-05-12 13:34:56,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:56,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326994034] [2024-05-12 13:34:56,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:56,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:57,712 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 13:34:57,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:57,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326994034] [2024-05-12 13:34:57,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326994034] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:57,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:57,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:57,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247894493] [2024-05-12 13:34:57,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:57,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:57,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:57,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 84 transitions, 535 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 13:34:57,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:57,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:57,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:34:58,656 INFO L124 PetriNetUnfolderBase]: 4992/7880 cut-off events. [2024-05-12 13:34:58,657 INFO L125 PetriNetUnfolderBase]: For 18070/18076 co-relation queries the response was YES. [2024-05-12 13:34:58,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26566 conditions, 7880 events. 4992/7880 cut-off events. For 18070/18076 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 48269 event pairs, 1870 based on Foata normal form. 5/7634 useless extension candidates. Maximal degree in co-relation 26534. Up to 6934 conditions per place. [2024-05-12 13:34:58,703 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 106 selfloop transitions, 31 changer transitions 0/144 dead transitions. [2024-05-12 13:34:58,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 144 transitions, 1084 flow [2024-05-12 13:34:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:34:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:34:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2024-05-12 13:34:58,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49848024316109424 [2024-05-12 13:34:58,705 INFO L175 Difference]: Start difference. First operand has 76 places, 84 transitions, 535 flow. Second operand 7 states and 164 transitions. [2024-05-12 13:34:58,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 144 transitions, 1084 flow [2024-05-12 13:34:58,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 1050 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:34:58,716 INFO L231 Difference]: Finished difference. Result has 82 places, 102 transitions, 741 flow [2024-05-12 13:34:58,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=741, PETRI_PLACES=82, PETRI_TRANSITIONS=102} [2024-05-12 13:34:58,717 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 29 predicate places. [2024-05-12 13:34:58,717 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 102 transitions, 741 flow [2024-05-12 13:34:58,717 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 13:34:58,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:34:58,717 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:34:58,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:34:58,718 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 13:34:58,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:34:58,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1219555219, now seen corresponding path program 2 times [2024-05-12 13:34:58,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:34:58,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117347915] [2024-05-12 13:34:58,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:34:58,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:34:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:34:59,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:34:59,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:34:59,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117347915] [2024-05-12 13:34:59,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117347915] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:34:59,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:34:59,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:34:59,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590573155] [2024-05-12 13:34:59,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:34:59,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:34:59,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:34:59,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:34:59,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:34:59,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:34:59,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 741 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 13:34:59,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:34:59,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:34:59,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:00,734 INFO L124 PetriNetUnfolderBase]: 5143/8113 cut-off events. [2024-05-12 13:35:00,734 INFO L125 PetriNetUnfolderBase]: For 24002/24008 co-relation queries the response was YES. [2024-05-12 13:35:00,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29602 conditions, 8113 events. 5143/8113 cut-off events. For 24002/24008 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 49859 event pairs, 1974 based on Foata normal form. 9/7861 useless extension candidates. Maximal degree in co-relation 29566. Up to 7034 conditions per place. [2024-05-12 13:35:00,787 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 127 selfloop transitions, 26 changer transitions 0/160 dead transitions. [2024-05-12 13:35:00,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 160 transitions, 1324 flow [2024-05-12 13:35:00,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:00,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:00,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:35:00,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2024-05-12 13:35:00,791 INFO L175 Difference]: Start difference. First operand has 82 places, 102 transitions, 741 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:35:00,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 160 transitions, 1324 flow [2024-05-12 13:35:00,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 160 transitions, 1230 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:00,830 INFO L231 Difference]: Finished difference. Result has 86 places, 108 transitions, 791 flow [2024-05-12 13:35:00,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=791, PETRI_PLACES=86, PETRI_TRANSITIONS=108} [2024-05-12 13:35:00,832 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 33 predicate places. [2024-05-12 13:35:00,832 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 108 transitions, 791 flow [2024-05-12 13:35:00,832 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 13:35:00,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:00,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:00,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:35:00,832 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 13:35:00,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1754299461, now seen corresponding path program 2 times [2024-05-12 13:35:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:00,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265282818] [2024-05-12 13:35:00,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:00,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:01,558 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 13:35:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265282818] [2024-05-12 13:35:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265282818] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:35:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240030752] [2024-05-12 13:35:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:35:01,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:35:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:35:01,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:01,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 108 transitions, 791 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 13:35:01,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:01,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:01,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:02,564 INFO L124 PetriNetUnfolderBase]: 5188/8170 cut-off events. [2024-05-12 13:35:02,564 INFO L125 PetriNetUnfolderBase]: For 25446/25452 co-relation queries the response was YES. [2024-05-12 13:35:02,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29883 conditions, 8170 events. 5188/8170 cut-off events. For 25446/25452 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 49907 event pairs, 2121 based on Foata normal form. 8/7919 useless extension candidates. Maximal degree in co-relation 29846. Up to 7306 conditions per place. [2024-05-12 13:35:02,603 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 112 selfloop transitions, 24 changer transitions 0/143 dead transitions. [2024-05-12 13:35:02,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1193 flow [2024-05-12 13:35:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:35:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:35:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 135 transitions. [2024-05-12 13:35:02,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-05-12 13:35:02,604 INFO L175 Difference]: Start difference. First operand has 86 places, 108 transitions, 791 flow. Second operand 6 states and 135 transitions. [2024-05-12 13:35:02,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1193 flow [2024-05-12 13:35:02,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 143 transitions, 1132 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:02,637 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 864 flow [2024-05-12 13:35:02,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=864, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2024-05-12 13:35:02,638 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 36 predicate places. [2024-05-12 13:35:02,638 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 864 flow [2024-05-12 13:35:02,638 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 13:35:02,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:02,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:02,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:35:02,639 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 13:35:02,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1983594659, now seen corresponding path program 3 times [2024-05-12 13:35:02,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:02,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894728982] [2024-05-12 13:35:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:02,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:02,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:03,380 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 13:35:03,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:03,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894728982] [2024-05-12 13:35:03,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894728982] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:03,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:03,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:35:03,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285976360] [2024-05-12 13:35:03,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:03,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:35:03,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:03,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:35:03,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:35:03,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:03,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 864 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 13:35:03,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:03,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:03,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:04,420 INFO L124 PetriNetUnfolderBase]: 5174/8150 cut-off events. [2024-05-12 13:35:04,421 INFO L125 PetriNetUnfolderBase]: For 27339/27348 co-relation queries the response was YES. [2024-05-12 13:35:04,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30371 conditions, 8150 events. 5174/8150 cut-off events. For 27339/27348 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 50176 event pairs, 1642 based on Foata normal form. 11/7902 useless extension candidates. Maximal degree in co-relation 30332. Up to 7071 conditions per place. [2024-05-12 13:35:04,466 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 127 selfloop transitions, 24 changer transitions 0/158 dead transitions. [2024-05-12 13:35:04,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 158 transitions, 1324 flow [2024-05-12 13:35:04,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:35:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:35:04,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-05-12 13:35:04,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5212765957446809 [2024-05-12 13:35:04,467 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 864 flow. Second operand 6 states and 147 transitions. [2024-05-12 13:35:04,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 158 transitions, 1324 flow [2024-05-12 13:35:04,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 158 transitions, 1280 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-05-12 13:35:04,509 INFO L231 Difference]: Finished difference. Result has 93 places, 117 transitions, 882 flow [2024-05-12 13:35:04,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=882, PETRI_PLACES=93, PETRI_TRANSITIONS=117} [2024-05-12 13:35:04,510 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 40 predicate places. [2024-05-12 13:35:04,510 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 117 transitions, 882 flow [2024-05-12 13:35:04,510 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 13:35:04,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:04,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:04,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:35:04,511 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 13:35:04,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2018449943, now seen corresponding path program 3 times [2024-05-12 13:35:04,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:04,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666100492] [2024-05-12 13:35:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:04,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:05,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:05,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666100492] [2024-05-12 13:35:05,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666100492] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:05,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:05,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:35:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452669596] [2024-05-12 13:35:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:05,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:35:05,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:35:05,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:35:05,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:05,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 117 transitions, 882 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 13:35:05,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:05,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:05,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:06,302 INFO L124 PetriNetUnfolderBase]: 5193/8178 cut-off events. [2024-05-12 13:35:06,302 INFO L125 PetriNetUnfolderBase]: For 30481/30490 co-relation queries the response was YES. [2024-05-12 13:35:06,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30961 conditions, 8178 events. 5193/8178 cut-off events. For 30481/30490 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 50155 event pairs, 1880 based on Foata normal form. 6/7925 useless extension candidates. Maximal degree in co-relation 30920. Up to 7180 conditions per place. [2024-05-12 13:35:06,348 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 107 selfloop transitions, 42 changer transitions 0/156 dead transitions. [2024-05-12 13:35:06,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 156 transitions, 1385 flow [2024-05-12 13:35:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:35:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:35:06,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-05-12 13:35:06,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5070921985815603 [2024-05-12 13:35:06,350 INFO L175 Difference]: Start difference. First operand has 93 places, 117 transitions, 882 flow. Second operand 6 states and 143 transitions. [2024-05-12 13:35:06,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 156 transitions, 1385 flow [2024-05-12 13:35:06,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 156 transitions, 1324 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:06,383 INFO L231 Difference]: Finished difference. Result has 95 places, 123 transitions, 1007 flow [2024-05-12 13:35:06,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1007, PETRI_PLACES=95, PETRI_TRANSITIONS=123} [2024-05-12 13:35:06,384 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 42 predicate places. [2024-05-12 13:35:06,384 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 123 transitions, 1007 flow [2024-05-12 13:35:06,384 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 13:35:06,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:06,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:06,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:35:06,384 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 13:35:06,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:06,384 INFO L85 PathProgramCache]: Analyzing trace with hash -2018174074, now seen corresponding path program 1 times [2024-05-12 13:35:06,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:06,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332187585] [2024-05-12 13:35:06,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:06,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:06,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:07,502 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 13:35:07,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:07,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332187585] [2024-05-12 13:35:07,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332187585] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:07,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:07,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:07,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983779770] [2024-05-12 13:35:07,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:07,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:07,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:07,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:07,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:07,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:07,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 123 transitions, 1007 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 13:35:07,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:07,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:07,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:08,696 INFO L124 PetriNetUnfolderBase]: 5185/8164 cut-off events. [2024-05-12 13:35:08,696 INFO L125 PetriNetUnfolderBase]: For 33370/33379 co-relation queries the response was YES. [2024-05-12 13:35:08,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31449 conditions, 8164 events. 5185/8164 cut-off events. For 33370/33379 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 49827 event pairs, 2057 based on Foata normal form. 10/7915 useless extension candidates. Maximal degree in co-relation 31406. Up to 7301 conditions per place. [2024-05-12 13:35:08,736 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 124 selfloop transitions, 21 changer transitions 0/152 dead transitions. [2024-05-12 13:35:08,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 1399 flow [2024-05-12 13:35:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:35:08,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:35:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-05-12 13:35:08,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716312056737589 [2024-05-12 13:35:08,737 INFO L175 Difference]: Start difference. First operand has 95 places, 123 transitions, 1007 flow. Second operand 6 states and 133 transitions. [2024-05-12 13:35:08,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 1399 flow [2024-05-12 13:35:08,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 152 transitions, 1320 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:08,780 INFO L231 Difference]: Finished difference. Result has 97 places, 126 transitions, 1008 flow [2024-05-12 13:35:08,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1008, PETRI_PLACES=97, PETRI_TRANSITIONS=126} [2024-05-12 13:35:08,780 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 44 predicate places. [2024-05-12 13:35:08,780 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 126 transitions, 1008 flow [2024-05-12 13:35:08,781 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 13:35:08,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:08,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:08,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:35:08,781 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 13:35:08,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -852301741, now seen corresponding path program 1 times [2024-05-12 13:35:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311385997] [2024-05-12 13:35:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:08,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:09,721 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 13:35:09,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:09,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311385997] [2024-05-12 13:35:09,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311385997] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:09,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:09,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:09,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748232157] [2024-05-12 13:35:09,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:09,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:09,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:09,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:09,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:09,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:09,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 126 transitions, 1008 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 13:35:09,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:09,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:09,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:11,081 INFO L124 PetriNetUnfolderBase]: 5258/8255 cut-off events. [2024-05-12 13:35:11,082 INFO L125 PetriNetUnfolderBase]: For 34873/34882 co-relation queries the response was YES. [2024-05-12 13:35:11,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32352 conditions, 8255 events. 5258/8255 cut-off events. For 34873/34882 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 50432 event pairs, 1621 based on Foata normal form. 4/8004 useless extension candidates. Maximal degree in co-relation 32309. Up to 6967 conditions per place. [2024-05-12 13:35:11,134 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 145 selfloop transitions, 60 changer transitions 0/212 dead transitions. [2024-05-12 13:35:11,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 212 transitions, 1951 flow [2024-05-12 13:35:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:35:11,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:35:11,135 INFO L175 Difference]: Start difference. First operand has 97 places, 126 transitions, 1008 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:35:11,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 212 transitions, 1951 flow [2024-05-12 13:35:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 212 transitions, 1897 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:11,173 INFO L231 Difference]: Finished difference. Result has 103 places, 148 transitions, 1320 flow [2024-05-12 13:35:11,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1320, PETRI_PLACES=103, PETRI_TRANSITIONS=148} [2024-05-12 13:35:11,174 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 50 predicate places. [2024-05-12 13:35:11,174 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 148 transitions, 1320 flow [2024-05-12 13:35:11,174 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 13:35:11,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:11,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:11,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:35:11,175 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 13:35:11,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash -852211531, now seen corresponding path program 2 times [2024-05-12 13:35:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579399945] [2024-05-12 13:35:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:12,279 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 13:35:12,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:12,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579399945] [2024-05-12 13:35:12,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579399945] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:12,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:12,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:12,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639869794] [2024-05-12 13:35:12,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:12,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:12,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:12,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:12,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:12,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 148 transitions, 1320 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 13:35:12,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:12,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:12,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:13,494 INFO L124 PetriNetUnfolderBase]: 5344/8370 cut-off events. [2024-05-12 13:35:13,495 INFO L125 PetriNetUnfolderBase]: For 46798/46807 co-relation queries the response was YES. [2024-05-12 13:35:13,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35948 conditions, 8370 events. 5344/8370 cut-off events. For 46798/46807 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 50791 event pairs, 1704 based on Foata normal form. 11/8126 useless extension candidates. Maximal degree in co-relation 35902. Up to 7005 conditions per place. [2024-05-12 13:35:13,551 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 171 selfloop transitions, 48 changer transitions 0/226 dead transitions. [2024-05-12 13:35:13,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 226 transitions, 2212 flow [2024-05-12 13:35:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2024-05-12 13:35:13,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523936170212766 [2024-05-12 13:35:13,553 INFO L175 Difference]: Start difference. First operand has 103 places, 148 transitions, 1320 flow. Second operand 8 states and 197 transitions. [2024-05-12 13:35:13,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 226 transitions, 2212 flow [2024-05-12 13:35:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 226 transitions, 2096 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:13,641 INFO L231 Difference]: Finished difference. Result has 108 places, 158 transitions, 1464 flow [2024-05-12 13:35:13,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1464, PETRI_PLACES=108, PETRI_TRANSITIONS=158} [2024-05-12 13:35:13,642 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 55 predicate places. [2024-05-12 13:35:13,642 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 158 transitions, 1464 flow [2024-05-12 13:35:13,642 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 13:35:13,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:13,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:13,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:35:13,642 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 13:35:13,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:13,642 INFO L85 PathProgramCache]: Analyzing trace with hash -852211376, now seen corresponding path program 1 times [2024-05-12 13:35:13,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:13,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551211764] [2024-05-12 13:35:13,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:13,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:14,415 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 13:35:14,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:14,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551211764] [2024-05-12 13:35:14,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551211764] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:14,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:14,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:14,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612798156] [2024-05-12 13:35:14,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:14,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:14,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:14,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:14,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:14,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:14,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 158 transitions, 1464 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 13:35:14,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:14,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:14,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:15,622 INFO L124 PetriNetUnfolderBase]: 5486/8568 cut-off events. [2024-05-12 13:35:15,622 INFO L125 PetriNetUnfolderBase]: For 55187/55196 co-relation queries the response was YES. [2024-05-12 13:35:15,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39301 conditions, 8568 events. 5486/8568 cut-off events. For 55187/55196 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 52018 event pairs, 1527 based on Foata normal form. 10/8323 useless extension candidates. Maximal degree in co-relation 39253. Up to 7128 conditions per place. [2024-05-12 13:35:15,668 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 153 selfloop transitions, 81 changer transitions 0/241 dead transitions. [2024-05-12 13:35:15,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 241 transitions, 2570 flow [2024-05-12 13:35:15,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 200 transitions. [2024-05-12 13:35:15,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:35:15,670 INFO L175 Difference]: Start difference. First operand has 108 places, 158 transitions, 1464 flow. Second operand 8 states and 200 transitions. [2024-05-12 13:35:15,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 241 transitions, 2570 flow [2024-05-12 13:35:15,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 241 transitions, 2416 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:15,742 INFO L231 Difference]: Finished difference. Result has 112 places, 181 transitions, 1821 flow [2024-05-12 13:35:15,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1821, PETRI_PLACES=112, PETRI_TRANSITIONS=181} [2024-05-12 13:35:15,742 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 59 predicate places. [2024-05-12 13:35:15,743 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 181 transitions, 1821 flow [2024-05-12 13:35:15,743 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 13:35:15,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:15,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:15,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:35:15,743 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 13:35:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:15,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1663036656, now seen corresponding path program 2 times [2024-05-12 13:35:15,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:15,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334727334] [2024-05-12 13:35:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:16,552 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 13:35:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334727334] [2024-05-12 13:35:16,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334727334] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:16,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:16,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:16,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880765538] [2024-05-12 13:35:16,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:16,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:16,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:16,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:16,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:16,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:16,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 181 transitions, 1821 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 13:35:16,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:16,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:16,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:17,811 INFO L124 PetriNetUnfolderBase]: 5709/8878 cut-off events. [2024-05-12 13:35:17,811 INFO L125 PetriNetUnfolderBase]: For 67392/67401 co-relation queries the response was YES. [2024-05-12 13:35:17,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43348 conditions, 8878 events. 5709/8878 cut-off events. For 67392/67401 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53738 event pairs, 1609 based on Foata normal form. 10/8633 useless extension candidates. Maximal degree in co-relation 43297. Up to 7685 conditions per place. [2024-05-12 13:35:17,877 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 186 selfloop transitions, 58 changer transitions 0/251 dead transitions. [2024-05-12 13:35:17,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 251 transitions, 2843 flow [2024-05-12 13:35:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:17,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:35:17,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5132978723404256 [2024-05-12 13:35:17,879 INFO L175 Difference]: Start difference. First operand has 112 places, 181 transitions, 1821 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:35:17,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 251 transitions, 2843 flow [2024-05-12 13:35:17,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 251 transitions, 2735 flow, removed 32 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:17,967 INFO L231 Difference]: Finished difference. Result has 118 places, 199 transitions, 2132 flow [2024-05-12 13:35:17,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2132, PETRI_PLACES=118, PETRI_TRANSITIONS=199} [2024-05-12 13:35:17,967 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 65 predicate places. [2024-05-12 13:35:17,967 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 199 transitions, 2132 flow [2024-05-12 13:35:17,967 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 13:35:17,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:17,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:17,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:35:17,968 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 13:35:17,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1663042236, now seen corresponding path program 3 times [2024-05-12 13:35:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:17,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857321099] [2024-05-12 13:35:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:17,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:18,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:18,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:18,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857321099] [2024-05-12 13:35:18,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857321099] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:18,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:18,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:18,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568608280] [2024-05-12 13:35:18,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:18,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:18,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:18,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:18,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:18,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 199 transitions, 2132 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 13:35:18,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:18,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:18,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:20,165 INFO L124 PetriNetUnfolderBase]: 5699/8864 cut-off events. [2024-05-12 13:35:20,165 INFO L125 PetriNetUnfolderBase]: For 73424/73433 co-relation queries the response was YES. [2024-05-12 13:35:20,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44291 conditions, 8864 events. 5699/8864 cut-off events. For 73424/73433 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53629 event pairs, 1618 based on Foata normal form. 6/8615 useless extension candidates. Maximal degree in co-relation 44237. Up to 7681 conditions per place. [2024-05-12 13:35:20,233 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 199 selfloop transitions, 63 changer transitions 0/269 dead transitions. [2024-05-12 13:35:20,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 269 transitions, 3050 flow [2024-05-12 13:35:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:35:20,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:35:20,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 235 transitions. [2024-05-12 13:35:20,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:35:20,235 INFO L175 Difference]: Start difference. First operand has 118 places, 199 transitions, 2132 flow. Second operand 10 states and 235 transitions. [2024-05-12 13:35:20,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 269 transitions, 3050 flow [2024-05-12 13:35:20,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 269 transitions, 2952 flow, removed 25 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:20,368 INFO L231 Difference]: Finished difference. Result has 124 places, 202 transitions, 2221 flow [2024-05-12 13:35:20,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2034, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2221, PETRI_PLACES=124, PETRI_TRANSITIONS=202} [2024-05-12 13:35:20,368 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-05-12 13:35:20,369 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 202 transitions, 2221 flow [2024-05-12 13:35:20,369 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 13:35:20,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:20,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:20,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:35:20,369 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 13:35:20,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1663036501, now seen corresponding path program 3 times [2024-05-12 13:35:20,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:20,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004100575] [2024-05-12 13:35:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:20,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:21,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:21,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:21,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004100575] [2024-05-12 13:35:21,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004100575] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:21,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:21,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:21,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126888244] [2024-05-12 13:35:21,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:21,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:21,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:21,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:21,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:21,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:21,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 202 transitions, 2221 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 13:35:21,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:21,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:21,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:22,716 INFO L124 PetriNetUnfolderBase]: 5678/8833 cut-off events. [2024-05-12 13:35:22,716 INFO L125 PetriNetUnfolderBase]: For 76033/76042 co-relation queries the response was YES. [2024-05-12 13:35:22,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44473 conditions, 8833 events. 5678/8833 cut-off events. For 76033/76042 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 53510 event pairs, 1618 based on Foata normal form. 8/8586 useless extension candidates. Maximal degree in co-relation 44417. Up to 7692 conditions per place. [2024-05-12 13:35:22,776 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 188 selfloop transitions, 57 changer transitions 0/252 dead transitions. [2024-05-12 13:35:22,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 252 transitions, 2949 flow [2024-05-12 13:35:22,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:22,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:22,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:35:22,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5053191489361702 [2024-05-12 13:35:22,778 INFO L175 Difference]: Start difference. First operand has 124 places, 202 transitions, 2221 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:35:22,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 252 transitions, 2949 flow [2024-05-12 13:35:22,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 252 transitions, 2755 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-05-12 13:35:22,894 INFO L231 Difference]: Finished difference. Result has 125 places, 203 transitions, 2187 flow [2024-05-12 13:35:22,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2187, PETRI_PLACES=125, PETRI_TRANSITIONS=203} [2024-05-12 13:35:22,895 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 72 predicate places. [2024-05-12 13:35:22,895 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 203 transitions, 2187 flow [2024-05-12 13:35:22,895 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 13:35:22,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:22,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:22,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:35:22,895 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 13:35:22,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1451085550, now seen corresponding path program 4 times [2024-05-12 13:35:22,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:22,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854986186] [2024-05-12 13:35:22,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:22,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:23,642 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 13:35:23,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:23,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854986186] [2024-05-12 13:35:23,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854986186] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:23,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:23,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460723325] [2024-05-12 13:35:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:23,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:23,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:23,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:23,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 203 transitions, 2187 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 13:35:23,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:23,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:23,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:24,956 INFO L124 PetriNetUnfolderBase]: 5716/8887 cut-off events. [2024-05-12 13:35:24,956 INFO L125 PetriNetUnfolderBase]: For 79554/79563 co-relation queries the response was YES. [2024-05-12 13:35:24,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44888 conditions, 8887 events. 5716/8887 cut-off events. For 79554/79563 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 53752 event pairs, 1656 based on Foata normal form. 10/8642 useless extension candidates. Maximal degree in co-relation 44830. Up to 7670 conditions per place. [2024-05-12 13:35:25,025 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 192 selfloop transitions, 57 changer transitions 0/256 dead transitions. [2024-05-12 13:35:25,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 256 transitions, 3080 flow [2024-05-12 13:35:25,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:25,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-05-12 13:35:25,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5288753799392097 [2024-05-12 13:35:25,027 INFO L175 Difference]: Start difference. First operand has 125 places, 203 transitions, 2187 flow. Second operand 7 states and 174 transitions. [2024-05-12 13:35:25,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 256 transitions, 3080 flow [2024-05-12 13:35:25,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 256 transitions, 2986 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:25,163 INFO L231 Difference]: Finished difference. Result has 128 places, 209 transitions, 2342 flow [2024-05-12 13:35:25,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2342, PETRI_PLACES=128, PETRI_TRANSITIONS=209} [2024-05-12 13:35:25,164 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 75 predicate places. [2024-05-12 13:35:25,164 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 209 transitions, 2342 flow [2024-05-12 13:35:25,164 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 13:35:25,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:25,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:25,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:35:25,165 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 13:35:25,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1361890871, now seen corresponding path program 4 times [2024-05-12 13:35:25,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:25,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673748773] [2024-05-12 13:35:25,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:25,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:26,081 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 13:35:26,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:26,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673748773] [2024-05-12 13:35:26,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673748773] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:26,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:26,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063065528] [2024-05-12 13:35:26,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:26,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:26,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:26,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 209 transitions, 2342 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 13:35:26,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:26,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:27,622 INFO L124 PetriNetUnfolderBase]: 5701/8866 cut-off events. [2024-05-12 13:35:27,623 INFO L125 PetriNetUnfolderBase]: For 85195/85204 co-relation queries the response was YES. [2024-05-12 13:35:27,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45470 conditions, 8866 events. 5701/8866 cut-off events. For 85195/85204 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 53621 event pairs, 1656 based on Foata normal form. 8/8619 useless extension candidates. Maximal degree in co-relation 45410. Up to 7689 conditions per place. [2024-05-12 13:35:27,694 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 198 selfloop transitions, 54 changer transitions 0/259 dead transitions. [2024-05-12 13:35:27,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 259 transitions, 3168 flow [2024-05-12 13:35:27,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:35:27,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5379939209726444 [2024-05-12 13:35:27,696 INFO L175 Difference]: Start difference. First operand has 128 places, 209 transitions, 2342 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:35:27,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 259 transitions, 3168 flow [2024-05-12 13:35:27,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 259 transitions, 2910 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:27,868 INFO L231 Difference]: Finished difference. Result has 130 places, 210 transitions, 2249 flow [2024-05-12 13:35:27,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2249, PETRI_PLACES=130, PETRI_TRANSITIONS=210} [2024-05-12 13:35:27,868 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 77 predicate places. [2024-05-12 13:35:27,868 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 210 transitions, 2249 flow [2024-05-12 13:35:27,868 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 13:35:27,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:27,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:27,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:35:27,869 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 13:35:27,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:27,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1852562590, now seen corresponding path program 5 times [2024-05-12 13:35:27,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:27,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490996080] [2024-05-12 13:35:27,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:27,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:28,585 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 13:35:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:28,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490996080] [2024-05-12 13:35:28,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490996080] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:28,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:28,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805412824] [2024-05-12 13:35:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:28,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:28,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 210 transitions, 2249 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 13:35:28,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:28,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:28,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:29,902 INFO L124 PetriNetUnfolderBase]: 5743/8924 cut-off events. [2024-05-12 13:35:29,902 INFO L125 PetriNetUnfolderBase]: For 88551/88560 co-relation queries the response was YES. [2024-05-12 13:35:29,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45675 conditions, 8924 events. 5743/8924 cut-off events. For 88551/88560 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 53943 event pairs, 1664 based on Foata normal form. 6/8675 useless extension candidates. Maximal degree in co-relation 45614. Up to 7679 conditions per place. [2024-05-12 13:35:29,972 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 189 selfloop transitions, 59 changer transitions 0/255 dead transitions. [2024-05-12 13:35:29,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 255 transitions, 3031 flow [2024-05-12 13:35:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:29,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:29,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:35:29,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.513677811550152 [2024-05-12 13:35:29,974 INFO L175 Difference]: Start difference. First operand has 130 places, 210 transitions, 2249 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:35:29,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 255 transitions, 3031 flow [2024-05-12 13:35:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 255 transitions, 2923 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:30,184 INFO L231 Difference]: Finished difference. Result has 133 places, 214 transitions, 2346 flow [2024-05-12 13:35:30,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2346, PETRI_PLACES=133, PETRI_TRANSITIONS=214} [2024-05-12 13:35:30,185 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 80 predicate places. [2024-05-12 13:35:30,185 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 214 transitions, 2346 flow [2024-05-12 13:35:30,185 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 13:35:30,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:30,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:30,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:35:30,186 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 13:35:30,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1861103927, now seen corresponding path program 1 times [2024-05-12 13:35:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:30,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646070619] [2024-05-12 13:35:30,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:30,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:30,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:31,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:31,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646070619] [2024-05-12 13:35:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646070619] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:31,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101537636] [2024-05-12 13:35:31,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:31,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:31,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:31,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:31,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:31,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 214 transitions, 2346 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 13:35:31,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:31,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:31,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:32,391 INFO L124 PetriNetUnfolderBase]: 5744/8923 cut-off events. [2024-05-12 13:35:32,391 INFO L125 PetriNetUnfolderBase]: For 92930/92939 co-relation queries the response was YES. [2024-05-12 13:35:32,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45856 conditions, 8923 events. 5744/8923 cut-off events. For 92930/92939 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 53759 event pairs, 1881 based on Foata normal form. 8/8676 useless extension candidates. Maximal degree in co-relation 45794. Up to 8057 conditions per place. [2024-05-12 13:35:32,445 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 209 selfloop transitions, 32 changer transitions 0/248 dead transitions. [2024-05-12 13:35:32,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 248 transitions, 3026 flow [2024-05-12 13:35:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:35:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:35:32,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:35:32,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-05-12 13:35:32,446 INFO L175 Difference]: Start difference. First operand has 133 places, 214 transitions, 2346 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:35:32,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 248 transitions, 3026 flow [2024-05-12 13:35:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 248 transitions, 2900 flow, removed 27 selfloop flow, removed 3 redundant places. [2024-05-12 13:35:32,622 INFO L231 Difference]: Finished difference. Result has 137 places, 223 transitions, 2439 flow [2024-05-12 13:35:32,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2439, PETRI_PLACES=137, PETRI_TRANSITIONS=223} [2024-05-12 13:35:32,622 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 84 predicate places. [2024-05-12 13:35:32,622 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 223 transitions, 2439 flow [2024-05-12 13:35:32,623 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 13:35:32,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:32,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:32,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:35:32,623 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 13:35:32,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1860807970, now seen corresponding path program 6 times [2024-05-12 13:35:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:32,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811665921] [2024-05-12 13:35:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:32,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:33,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:33,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:33,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811665921] [2024-05-12 13:35:33,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811665921] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:33,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:33,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973426006] [2024-05-12 13:35:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:33,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:33,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:33,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 223 transitions, 2439 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 13:35:33,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:33,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:33,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:34,733 INFO L124 PetriNetUnfolderBase]: 5760/8945 cut-off events. [2024-05-12 13:35:34,733 INFO L125 PetriNetUnfolderBase]: For 97903/97915 co-relation queries the response was YES. [2024-05-12 13:35:34,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46259 conditions, 8945 events. 5760/8945 cut-off events. For 97903/97915 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 53873 event pairs, 1896 based on Foata normal form. 12/8702 useless extension candidates. Maximal degree in co-relation 46195. Up to 8055 conditions per place. [2024-05-12 13:35:34,795 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 221 selfloop transitions, 32 changer transitions 0/260 dead transitions. [2024-05-12 13:35:34,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 260 transitions, 3127 flow [2024-05-12 13:35:34,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:34,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:34,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:35:34,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-05-12 13:35:34,796 INFO L175 Difference]: Start difference. First operand has 137 places, 223 transitions, 2439 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:35:34,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 260 transitions, 3127 flow [2024-05-12 13:35:34,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 260 transitions, 3082 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-05-12 13:35:34,958 INFO L231 Difference]: Finished difference. Result has 142 places, 227 transitions, 2551 flow [2024-05-12 13:35:34,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2551, PETRI_PLACES=142, PETRI_TRANSITIONS=227} [2024-05-12 13:35:34,959 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 89 predicate places. [2024-05-12 13:35:34,959 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 227 transitions, 2551 flow [2024-05-12 13:35:34,959 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 13:35:34,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:34,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:34,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:35:34,959 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 13:35:34,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:34,960 INFO L85 PathProgramCache]: Analyzing trace with hash -651609200, now seen corresponding path program 1 times [2024-05-12 13:35:34,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:34,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184883176] [2024-05-12 13:35:34,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:34,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:35,871 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 13:35:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:35,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184883176] [2024-05-12 13:35:35,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184883176] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:35,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:35,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:35,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398768941] [2024-05-12 13:35:35,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:35,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:35,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:35,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 227 transitions, 2551 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 13:35:35,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:35,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:35,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:37,488 INFO L124 PetriNetUnfolderBase]: 5984/9286 cut-off events. [2024-05-12 13:35:37,488 INFO L125 PetriNetUnfolderBase]: For 105360/105372 co-relation queries the response was YES. [2024-05-12 13:35:37,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48534 conditions, 9286 events. 5984/9286 cut-off events. For 105360/105372 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 56505 event pairs, 1183 based on Foata normal form. 7/9038 useless extension candidates. Maximal degree in co-relation 48468. Up to 7292 conditions per place. [2024-05-12 13:35:37,566 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 180 selfloop transitions, 120 changer transitions 0/307 dead transitions. [2024-05-12 13:35:37,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 307 transitions, 3793 flow [2024-05-12 13:35:37,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:37,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:37,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-05-12 13:35:37,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342789598108747 [2024-05-12 13:35:37,567 INFO L175 Difference]: Start difference. First operand has 142 places, 227 transitions, 2551 flow. Second operand 9 states and 226 transitions. [2024-05-12 13:35:37,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 307 transitions, 3793 flow [2024-05-12 13:35:37,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 307 transitions, 3704 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:37,798 INFO L231 Difference]: Finished difference. Result has 147 places, 237 transitions, 2891 flow [2024-05-12 13:35:37,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2891, PETRI_PLACES=147, PETRI_TRANSITIONS=237} [2024-05-12 13:35:37,798 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 94 predicate places. [2024-05-12 13:35:37,798 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 237 transitions, 2891 flow [2024-05-12 13:35:37,798 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 13:35:37,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:37,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:35:37,799 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:35:37,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:37,799 INFO L85 PathProgramCache]: Analyzing trace with hash -651548750, now seen corresponding path program 2 times [2024-05-12 13:35:37,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:37,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38142484] [2024-05-12 13:35:37,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:37,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:38,773 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 13:35:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38142484] [2024-05-12 13:35:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38142484] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781558528] [2024-05-12 13:35:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:38,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:38,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:38,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 237 transitions, 2891 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 13:35:38,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:38,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:38,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:40,386 INFO L124 PetriNetUnfolderBase]: 6018/9336 cut-off events. [2024-05-12 13:35:40,386 INFO L125 PetriNetUnfolderBase]: For 119242/119254 co-relation queries the response was YES. [2024-05-12 13:35:40,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51011 conditions, 9336 events. 6018/9336 cut-off events. For 119242/119254 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 56740 event pairs, 1476 based on Foata normal form. 7/9088 useless extension candidates. Maximal degree in co-relation 50943. Up to 7759 conditions per place. [2024-05-12 13:35:40,468 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 181 selfloop transitions, 115 changer transitions 0/303 dead transitions. [2024-05-12 13:35:40,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 303 transitions, 3932 flow [2024-05-12 13:35:40,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:40,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:40,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-05-12 13:35:40,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:35:40,469 INFO L175 Difference]: Start difference. First operand has 147 places, 237 transitions, 2891 flow. Second operand 9 states and 219 transitions. [2024-05-12 13:35:40,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 303 transitions, 3932 flow [2024-05-12 13:35:40,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 303 transitions, 3707 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-05-12 13:35:40,798 INFO L231 Difference]: Finished difference. Result has 151 places, 240 transitions, 2977 flow [2024-05-12 13:35:40,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2680, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2977, PETRI_PLACES=151, PETRI_TRANSITIONS=240} [2024-05-12 13:35:40,799 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 98 predicate places. [2024-05-12 13:35:40,799 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 240 transitions, 2977 flow [2024-05-12 13:35:40,799 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 13:35:40,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:40,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:40,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:35:40,800 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 13:35:40,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash -648747466, now seen corresponding path program 1 times [2024-05-12 13:35:40,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:40,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780149243] [2024-05-12 13:35:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:40,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:41,716 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 13:35:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780149243] [2024-05-12 13:35:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780149243] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:41,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:35:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300222600] [2024-05-12 13:35:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:35:41,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:35:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:35:41,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:41,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 240 transitions, 2977 flow. Second operand has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:41,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:41,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:41,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:43,286 INFO L124 PetriNetUnfolderBase]: 6008/9322 cut-off events. [2024-05-12 13:35:43,287 INFO L125 PetriNetUnfolderBase]: For 122134/122146 co-relation queries the response was YES. [2024-05-12 13:35:43,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51248 conditions, 9322 events. 6008/9322 cut-off events. For 122134/122146 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 56656 event pairs, 1483 based on Foata normal form. 7/9074 useless extension candidates. Maximal degree in co-relation 51178. Up to 7986 conditions per place. [2024-05-12 13:35:43,353 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 189 selfloop transitions, 95 changer transitions 0/291 dead transitions. [2024-05-12 13:35:43,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 291 transitions, 3807 flow [2024-05-12 13:35:43,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:43,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:35:43,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-05-12 13:35:43,354 INFO L175 Difference]: Start difference. First operand has 151 places, 240 transitions, 2977 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:35:43,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 291 transitions, 3807 flow [2024-05-12 13:35:43,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 291 transitions, 3509 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:43,661 INFO L231 Difference]: Finished difference. Result has 152 places, 240 transitions, 2885 flow [2024-05-12 13:35:43,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2885, PETRI_PLACES=152, PETRI_TRANSITIONS=240} [2024-05-12 13:35:43,661 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-05-12 13:35:43,661 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 240 transitions, 2885 flow [2024-05-12 13:35:43,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.555555555555555) internal successors, (104), 9 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:35:43,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:43,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:43,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:35:43,662 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 13:35:43,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:43,662 INFO L85 PathProgramCache]: Analyzing trace with hash -100765746, now seen corresponding path program 3 times [2024-05-12 13:35:43,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:43,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612782256] [2024-05-12 13:35:43,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:43,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:44,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:44,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612782256] [2024-05-12 13:35:44,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612782256] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:44,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:44,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:44,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398623425] [2024-05-12 13:35:44,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:44,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:44,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:44,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:44,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:44,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:44,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 240 transitions, 2885 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 13:35:44,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:44,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:44,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:46,395 INFO L124 PetriNetUnfolderBase]: 6267/9709 cut-off events. [2024-05-12 13:35:46,395 INFO L125 PetriNetUnfolderBase]: For 140167/140179 co-relation queries the response was YES. [2024-05-12 13:35:46,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53767 conditions, 9709 events. 6267/9709 cut-off events. For 140167/140179 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 59310 event pairs, 1630 based on Foata normal form. 26/9476 useless extension candidates. Maximal degree in co-relation 53696. Up to 8072 conditions per place. [2024-05-12 13:35:46,478 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 265 selfloop transitions, 59 changer transitions 0/331 dead transitions. [2024-05-12 13:35:46,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 331 transitions, 4166 flow [2024-05-12 13:35:46,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:46,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2024-05-12 13:35:46,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2024-05-12 13:35:46,480 INFO L175 Difference]: Start difference. First operand has 152 places, 240 transitions, 2885 flow. Second operand 9 states and 225 transitions. [2024-05-12 13:35:46,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 331 transitions, 4166 flow [2024-05-12 13:35:46,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 331 transitions, 3833 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-05-12 13:35:46,959 INFO L231 Difference]: Finished difference. Result has 152 places, 247 transitions, 2858 flow [2024-05-12 13:35:46,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2580, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2858, PETRI_PLACES=152, PETRI_TRANSITIONS=247} [2024-05-12 13:35:46,960 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 99 predicate places. [2024-05-12 13:35:46,960 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 247 transitions, 2858 flow [2024-05-12 13:35:46,960 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 13:35:46,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:46,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:46,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:35:46,960 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 13:35:46,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -533276372, now seen corresponding path program 1 times [2024-05-12 13:35:46,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:46,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867669763] [2024-05-12 13:35:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:46,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:46,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:48,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:48,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:48,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867669763] [2024-05-12 13:35:48,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867669763] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:48,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:48,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:48,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466856001] [2024-05-12 13:35:48,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:48,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:48,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:48,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:48,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:48,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:48,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 247 transitions, 2858 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 13:35:48,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:48,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:48,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:49,548 INFO L124 PetriNetUnfolderBase]: 6301/9755 cut-off events. [2024-05-12 13:35:49,548 INFO L125 PetriNetUnfolderBase]: For 147849/147861 co-relation queries the response was YES. [2024-05-12 13:35:49,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55075 conditions, 9755 events. 6301/9755 cut-off events. For 147849/147861 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 59692 event pairs, 1588 based on Foata normal form. 7/9505 useless extension candidates. Maximal degree in co-relation 55005. Up to 8734 conditions per place. [2024-05-12 13:35:49,632 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 235 selfloop transitions, 53 changer transitions 0/295 dead transitions. [2024-05-12 13:35:49,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 295 transitions, 3630 flow [2024-05-12 13:35:49,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:35:49,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:35:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 183 transitions. [2024-05-12 13:35:49,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867021276595745 [2024-05-12 13:35:49,633 INFO L175 Difference]: Start difference. First operand has 152 places, 247 transitions, 2858 flow. Second operand 8 states and 183 transitions. [2024-05-12 13:35:49,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 295 transitions, 3630 flow [2024-05-12 13:35:50,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 295 transitions, 3475 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:50,112 INFO L231 Difference]: Finished difference. Result has 153 places, 250 transitions, 2871 flow [2024-05-12 13:35:50,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2871, PETRI_PLACES=153, PETRI_TRANSITIONS=250} [2024-05-12 13:35:50,112 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 100 predicate places. [2024-05-12 13:35:50,112 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 250 transitions, 2871 flow [2024-05-12 13:35:50,113 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 13:35:50,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:50,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:50,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:35:50,113 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 13:35:50,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:50,113 INFO L85 PathProgramCache]: Analyzing trace with hash 14525424, now seen corresponding path program 4 times [2024-05-12 13:35:50,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:50,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460357854] [2024-05-12 13:35:50,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:50,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:35:51,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460357854] [2024-05-12 13:35:51,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460357854] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:51,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:51,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:51,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269882300] [2024-05-12 13:35:51,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:51,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:51,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:51,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:51,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 250 transitions, 2871 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 13:35:51,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:51,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:51,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:53,271 INFO L124 PetriNetUnfolderBase]: 6489/10039 cut-off events. [2024-05-12 13:35:53,272 INFO L125 PetriNetUnfolderBase]: For 160105/160117 co-relation queries the response was YES. [2024-05-12 13:35:53,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56494 conditions, 10039 events. 6489/10039 cut-off events. For 160105/160117 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 61521 event pairs, 1620 based on Foata normal form. 27/9809 useless extension candidates. Maximal degree in co-relation 56423. Up to 8665 conditions per place. [2024-05-12 13:35:53,366 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 236 selfloop transitions, 68 changer transitions 0/311 dead transitions. [2024-05-12 13:35:53,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 311 transitions, 3748 flow [2024-05-12 13:35:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:35:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:35:53,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2024-05-12 13:35:53,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5035460992907801 [2024-05-12 13:35:53,368 INFO L175 Difference]: Start difference. First operand has 153 places, 250 transitions, 2871 flow. Second operand 9 states and 213 transitions. [2024-05-12 13:35:53,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 311 transitions, 3748 flow [2024-05-12 13:35:53,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 311 transitions, 3606 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-05-12 13:35:53,656 INFO L231 Difference]: Finished difference. Result has 156 places, 253 transitions, 2945 flow [2024-05-12 13:35:53,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2729, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2945, PETRI_PLACES=156, PETRI_TRANSITIONS=253} [2024-05-12 13:35:53,657 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 103 predicate places. [2024-05-12 13:35:53,657 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 253 transitions, 2945 flow [2024-05-12 13:35:53,657 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 13:35:53,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:53,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:35:53,657 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 13:35:53,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1859974020, now seen corresponding path program 2 times [2024-05-12 13:35:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:53,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023741905] [2024-05-12 13:35:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:54,624 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 13:35:54,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:54,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023741905] [2024-05-12 13:35:54,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023741905] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:54,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:54,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:54,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364546468] [2024-05-12 13:35:54,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:54,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:54,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:54,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:54,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:54,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:54,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 253 transitions, 2945 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 13:35:54,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:54,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:54,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:56,332 INFO L124 PetriNetUnfolderBase]: 6528/10094 cut-off events. [2024-05-12 13:35:56,332 INFO L125 PetriNetUnfolderBase]: For 163075/163087 co-relation queries the response was YES. [2024-05-12 13:35:56,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57293 conditions, 10094 events. 6528/10094 cut-off events. For 163075/163087 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 61669 event pairs, 1927 based on Foata normal form. 12/9849 useless extension candidates. Maximal degree in co-relation 57221. Up to 9200 conditions per place. [2024-05-12 13:35:56,421 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 256 selfloop transitions, 29 changer transitions 0/292 dead transitions. [2024-05-12 13:35:56,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 292 transitions, 3687 flow [2024-05-12 13:35:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:56,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:56,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 154 transitions. [2024-05-12 13:35:56,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:35:56,423 INFO L175 Difference]: Start difference. First operand has 156 places, 253 transitions, 2945 flow. Second operand 7 states and 154 transitions. [2024-05-12 13:35:56,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 292 transitions, 3687 flow [2024-05-12 13:35:56,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 292 transitions, 3530 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-05-12 13:35:56,783 INFO L231 Difference]: Finished difference. Result has 157 places, 260 transitions, 2950 flow [2024-05-12 13:35:56,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2788, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2950, PETRI_PLACES=157, PETRI_TRANSITIONS=260} [2024-05-12 13:35:56,784 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 104 predicate places. [2024-05-12 13:35:56,784 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 260 transitions, 2950 flow [2024-05-12 13:35:56,784 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 13:35:56,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:56,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:56,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:35:56,784 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 13:35:56,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:56,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1850480580, now seen corresponding path program 3 times [2024-05-12 13:35:56,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:56,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509777200] [2024-05-12 13:35:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:56,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:35:57,756 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 13:35:57,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:35:57,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509777200] [2024-05-12 13:35:57,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509777200] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:35:57,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:35:57,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:35:57,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748536029] [2024-05-12 13:35:57,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:35:57,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:35:57,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:35:57,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:35:57,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:35:57,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:35:57,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 260 transitions, 2950 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 13:35:57,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:35:57,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:35:57,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:35:59,461 INFO L124 PetriNetUnfolderBase]: 6562/10145 cut-off events. [2024-05-12 13:35:59,461 INFO L125 PetriNetUnfolderBase]: For 172046/172058 co-relation queries the response was YES. [2024-05-12 13:35:59,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58185 conditions, 10145 events. 6562/10145 cut-off events. For 172046/172058 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 61991 event pairs, 1975 based on Foata normal form. 12/9900 useless extension candidates. Maximal degree in co-relation 58111. Up to 9257 conditions per place. [2024-05-12 13:35:59,556 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 258 selfloop transitions, 31 changer transitions 0/296 dead transitions. [2024-05-12 13:35:59,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 296 transitions, 3698 flow [2024-05-12 13:35:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:35:59,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:35:59,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 156 transitions. [2024-05-12 13:35:59,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47416413373860183 [2024-05-12 13:35:59,557 INFO L175 Difference]: Start difference. First operand has 157 places, 260 transitions, 2950 flow. Second operand 7 states and 156 transitions. [2024-05-12 13:35:59,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 296 transitions, 3698 flow [2024-05-12 13:35:59,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 296 transitions, 3596 flow, removed 27 selfloop flow, removed 4 redundant places. [2024-05-12 13:35:59,921 INFO L231 Difference]: Finished difference. Result has 160 places, 263 transitions, 2984 flow [2024-05-12 13:35:59,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2848, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2984, PETRI_PLACES=160, PETRI_TRANSITIONS=263} [2024-05-12 13:35:59,921 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 107 predicate places. [2024-05-12 13:35:59,921 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 263 transitions, 2984 flow [2024-05-12 13:35:59,921 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 13:35:59,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:35:59,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:35:59,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:35:59,922 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 13:35:59,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:35:59,922 INFO L85 PathProgramCache]: Analyzing trace with hash 731242102, now seen corresponding path program 4 times [2024-05-12 13:35:59,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:35:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727963398] [2024-05-12 13:35:59,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:35:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:35:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:00,905 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 13:36:00,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:00,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727963398] [2024-05-12 13:36:00,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727963398] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:00,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:00,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:00,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093240124] [2024-05-12 13:36:00,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:00,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:00,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:00,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:00,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 263 transitions, 2984 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 13:36:00,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:00,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:00,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:02,531 INFO L124 PetriNetUnfolderBase]: 6596/10106 cut-off events. [2024-05-12 13:36:02,531 INFO L125 PetriNetUnfolderBase]: For 181518/181530 co-relation queries the response was YES. [2024-05-12 13:36:02,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59212 conditions, 10106 events. 6596/10106 cut-off events. For 181518/181530 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 61317 event pairs, 1634 based on Foata normal form. 7/9886 useless extension candidates. Maximal degree in co-relation 59137. Up to 9145 conditions per place. [2024-05-12 13:36:02,628 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 241 selfloop transitions, 56 changer transitions 0/304 dead transitions. [2024-05-12 13:36:02,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 304 transitions, 3776 flow [2024-05-12 13:36:02,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:02,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 162 transitions. [2024-05-12 13:36:02,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49240121580547114 [2024-05-12 13:36:02,629 INFO L175 Difference]: Start difference. First operand has 160 places, 263 transitions, 2984 flow. Second operand 7 states and 162 transitions. [2024-05-12 13:36:02,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 304 transitions, 3776 flow [2024-05-12 13:36:03,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 304 transitions, 3664 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:03,034 INFO L231 Difference]: Finished difference. Result has 162 places, 266 transitions, 3068 flow [2024-05-12 13:36:03,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2872, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3068, PETRI_PLACES=162, PETRI_TRANSITIONS=266} [2024-05-12 13:36:03,034 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 109 predicate places. [2024-05-12 13:36:03,034 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 266 transitions, 3068 flow [2024-05-12 13:36:03,034 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 13:36:03,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:03,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:03,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:36:03,035 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 13:36:03,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:03,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1859648272, now seen corresponding path program 1 times [2024-05-12 13:36:03,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:03,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248948189] [2024-05-12 13:36:03,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:03,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:03,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:03,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248948189] [2024-05-12 13:36:03,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248948189] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:03,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:03,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:03,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613084206] [2024-05-12 13:36:03,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:03,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:03,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:03,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:03,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:04,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:04,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 266 transitions, 3068 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 13:36:04,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:04,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:04,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:05,706 INFO L124 PetriNetUnfolderBase]: 6591/10096 cut-off events. [2024-05-12 13:36:05,707 INFO L125 PetriNetUnfolderBase]: For 192328/192340 co-relation queries the response was YES. [2024-05-12 13:36:05,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60021 conditions, 10096 events. 6591/10096 cut-off events. For 192328/192340 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 60902 event pairs, 1969 based on Foata normal form. 10/9879 useless extension candidates. Maximal degree in co-relation 59945. Up to 9261 conditions per place. [2024-05-12 13:36:05,808 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 256 selfloop transitions, 40 changer transitions 0/303 dead transitions. [2024-05-12 13:36:05,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 303 transitions, 3850 flow [2024-05-12 13:36:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:05,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:05,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2024-05-12 13:36:05,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48024316109422494 [2024-05-12 13:36:05,810 INFO L175 Difference]: Start difference. First operand has 162 places, 266 transitions, 3068 flow. Second operand 7 states and 158 transitions. [2024-05-12 13:36:05,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 303 transitions, 3850 flow [2024-05-12 13:36:06,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 303 transitions, 3632 flow, removed 57 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:06,202 INFO L231 Difference]: Finished difference. Result has 164 places, 270 transitions, 3030 flow [2024-05-12 13:36:06,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2870, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3030, PETRI_PLACES=164, PETRI_TRANSITIONS=270} [2024-05-12 13:36:06,203 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 111 predicate places. [2024-05-12 13:36:06,203 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 270 transitions, 3030 flow [2024-05-12 13:36:06,203 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 13:36:06,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:06,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:36:06,203 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 13:36:06,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1594689102, now seen corresponding path program 5 times [2024-05-12 13:36:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:06,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144171406] [2024-05-12 13:36:06,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:07,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144171406] [2024-05-12 13:36:07,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144171406] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:07,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:07,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:07,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187880171] [2024-05-12 13:36:07,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:07,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:07,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:07,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:07,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:07,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:07,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 270 transitions, 3030 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 13:36:07,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:07,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:07,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:09,170 INFO L124 PetriNetUnfolderBase]: 6999/10738 cut-off events. [2024-05-12 13:36:09,170 INFO L125 PetriNetUnfolderBase]: For 209761/209773 co-relation queries the response was YES. [2024-05-12 13:36:09,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63137 conditions, 10738 events. 6999/10738 cut-off events. For 209761/209773 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 65531 event pairs, 1409 based on Foata normal form. 37/10530 useless extension candidates. Maximal degree in co-relation 63060. Up to 8962 conditions per place. [2024-05-12 13:36:09,275 INFO L140 encePairwiseOnDemand]: 32/47 looper letters, 286 selfloop transitions, 64 changer transitions 0/357 dead transitions. [2024-05-12 13:36:09,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 357 transitions, 4465 flow [2024-05-12 13:36:09,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:09,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 206 transitions. [2024-05-12 13:36:09,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478723404255319 [2024-05-12 13:36:09,276 INFO L175 Difference]: Start difference. First operand has 164 places, 270 transitions, 3030 flow. Second operand 8 states and 206 transitions. [2024-05-12 13:36:09,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 357 transitions, 4465 flow [2024-05-12 13:36:09,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 357 transitions, 4371 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:09,677 INFO L231 Difference]: Finished difference. Result has 168 places, 288 transitions, 3508 flow [2024-05-12 13:36:09,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2940, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3508, PETRI_PLACES=168, PETRI_TRANSITIONS=288} [2024-05-12 13:36:09,677 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 115 predicate places. [2024-05-12 13:36:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 288 transitions, 3508 flow [2024-05-12 13:36:09,678 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 13:36:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:09,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:36:09,678 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 13:36:09,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1859648520, now seen corresponding path program 5 times [2024-05-12 13:36:09,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:09,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613799329] [2024-05-12 13:36:09,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:09,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:10,624 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 13:36:10,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:10,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613799329] [2024-05-12 13:36:10,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613799329] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:10,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:10,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:10,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569683785] [2024-05-12 13:36:10,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:10,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:10,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:10,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:10,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:10,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:10,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 288 transitions, 3508 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 13:36:10,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:10,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:10,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:12,414 INFO L124 PetriNetUnfolderBase]: 6996/10679 cut-off events. [2024-05-12 13:36:12,414 INFO L125 PetriNetUnfolderBase]: For 221981/221993 co-relation queries the response was YES. [2024-05-12 13:36:12,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67055 conditions, 10679 events. 6996/10679 cut-off events. For 221981/221993 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 64775 event pairs, 2084 based on Foata normal form. 12/10464 useless extension candidates. Maximal degree in co-relation 66976. Up to 9837 conditions per place. [2024-05-12 13:36:12,511 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 279 selfloop transitions, 38 changer transitions 0/324 dead transitions. [2024-05-12 13:36:12,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 324 transitions, 4328 flow [2024-05-12 13:36:12,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:36:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:36:12,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 157 transitions. [2024-05-12 13:36:12,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47720364741641336 [2024-05-12 13:36:12,513 INFO L175 Difference]: Start difference. First operand has 168 places, 288 transitions, 3508 flow. Second operand 7 states and 157 transitions. [2024-05-12 13:36:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 324 transitions, 4328 flow [2024-05-12 13:36:13,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 324 transitions, 4144 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:13,208 INFO L231 Difference]: Finished difference. Result has 171 places, 291 transitions, 3492 flow [2024-05-12 13:36:13,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3324, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3492, PETRI_PLACES=171, PETRI_TRANSITIONS=291} [2024-05-12 13:36:13,208 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 118 predicate places. [2024-05-12 13:36:13,208 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 291 transitions, 3492 flow [2024-05-12 13:36:13,208 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 13:36:13,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:13,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:36:13,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:36:13,209 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:36:13,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1565590060, now seen corresponding path program 1 times [2024-05-12 13:36:13,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:13,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736730917] [2024-05-12 13:36:13,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:13,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:14,060 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 13:36:14,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736730917] [2024-05-12 13:36:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736730917] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:14,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:14,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:36:14,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571466292] [2024-05-12 13:36:14,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:14,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:36:14,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:36:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:36:14,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:36:14,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 291 transitions, 3492 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:14,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:14,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:36:14,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:15,788 INFO L124 PetriNetUnfolderBase]: 6723/10421 cut-off events. [2024-05-12 13:36:15,788 INFO L125 PetriNetUnfolderBase]: For 214620/214664 co-relation queries the response was YES. [2024-05-12 13:36:15,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64268 conditions, 10421 events. 6723/10421 cut-off events. For 214620/214664 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 64612 event pairs, 1704 based on Foata normal form. 11/10160 useless extension candidates. Maximal degree in co-relation 64187. Up to 9191 conditions per place. [2024-05-12 13:36:15,878 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 279 selfloop transitions, 27 changer transitions 0/328 dead transitions. [2024-05-12 13:36:15,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 328 transitions, 4398 flow [2024-05-12 13:36:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:36:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:36:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2024-05-12 13:36:15,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5191489361702127 [2024-05-12 13:36:15,879 INFO L175 Difference]: Start difference. First operand has 171 places, 291 transitions, 3492 flow. Second operand 5 states and 122 transitions. [2024-05-12 13:36:15,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 328 transitions, 4398 flow [2024-05-12 13:36:16,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 328 transitions, 4254 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:16,249 INFO L231 Difference]: Finished difference. Result has 172 places, 298 transitions, 3541 flow [2024-05-12 13:36:16,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3541, PETRI_PLACES=172, PETRI_TRANSITIONS=298} [2024-05-12 13:36:16,249 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 119 predicate places. [2024-05-12 13:36:16,249 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 298 transitions, 3541 flow [2024-05-12 13:36:16,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:36:16,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:16,249 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 13:36:16,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:36:16,250 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 13:36:16,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:16,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1082664979, now seen corresponding path program 1 times [2024-05-12 13:36:16,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:16,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231283645] [2024-05-12 13:36:16,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:16,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:17,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:17,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:17,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231283645] [2024-05-12 13:36:17,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231283645] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:17,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:17,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:17,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617395622] [2024-05-12 13:36:17,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:17,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:17,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:17,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:17,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:17,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 298 transitions, 3541 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:17,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:17,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:17,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:19,008 INFO L124 PetriNetUnfolderBase]: 7294/11111 cut-off events. [2024-05-12 13:36:19,008 INFO L125 PetriNetUnfolderBase]: For 242756/242768 co-relation queries the response was YES. [2024-05-12 13:36:19,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70558 conditions, 11111 events. 7294/11111 cut-off events. For 242756/242768 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 68054 event pairs, 1135 based on Foata normal form. 19/10911 useless extension candidates. Maximal degree in co-relation 70475. Up to 8293 conditions per place. [2024-05-12 13:36:19,103 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 231 selfloop transitions, 131 changer transitions 0/369 dead transitions. [2024-05-12 13:36:19,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 369 transitions, 4777 flow [2024-05-12 13:36:19,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:19,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:19,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 220 transitions. [2024-05-12 13:36:19,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200945626477541 [2024-05-12 13:36:19,104 INFO L175 Difference]: Start difference. First operand has 172 places, 298 transitions, 3541 flow. Second operand 9 states and 220 transitions. [2024-05-12 13:36:19,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 369 transitions, 4777 flow [2024-05-12 13:36:19,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 369 transitions, 4732 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-05-12 13:36:19,569 INFO L231 Difference]: Finished difference. Result has 179 places, 302 transitions, 3893 flow [2024-05-12 13:36:19,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3496, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3893, PETRI_PLACES=179, PETRI_TRANSITIONS=302} [2024-05-12 13:36:19,570 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 126 predicate places. [2024-05-12 13:36:19,570 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 302 transitions, 3893 flow [2024-05-12 13:36:19,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:19,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:19,570 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 13:36:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:36:19,570 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 13:36:19,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:19,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1276826799, now seen corresponding path program 2 times [2024-05-12 13:36:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312577814] [2024-05-12 13:36:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:20,434 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 13:36:20,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:20,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312577814] [2024-05-12 13:36:20,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312577814] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:20,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:20,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:20,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232945225] [2024-05-12 13:36:20,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:20,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:20,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:20,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:20,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 302 transitions, 3893 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:20,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:20,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:20,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:22,577 INFO L124 PetriNetUnfolderBase]: 7841/11962 cut-off events. [2024-05-12 13:36:22,577 INFO L125 PetriNetUnfolderBase]: For 299378/299390 co-relation queries the response was YES. [2024-05-12 13:36:22,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78953 conditions, 11962 events. 7841/11962 cut-off events. For 299378/299390 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 74581 event pairs, 1659 based on Foata normal form. 19/11756 useless extension candidates. Maximal degree in co-relation 78868. Up to 9638 conditions per place. [2024-05-12 13:36:22,692 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 242 selfloop transitions, 127 changer transitions 0/376 dead transitions. [2024-05-12 13:36:22,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 376 transitions, 5238 flow [2024-05-12 13:36:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-05-12 13:36:22,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524822695035461 [2024-05-12 13:36:22,694 INFO L175 Difference]: Start difference. First operand has 179 places, 302 transitions, 3893 flow. Second operand 9 states and 222 transitions. [2024-05-12 13:36:22,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 376 transitions, 5238 flow [2024-05-12 13:36:23,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 376 transitions, 5063 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:23,298 INFO L231 Difference]: Finished difference. Result has 184 places, 309 transitions, 4222 flow [2024-05-12 13:36:23,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=3718, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4222, PETRI_PLACES=184, PETRI_TRANSITIONS=309} [2024-05-12 13:36:23,298 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 131 predicate places. [2024-05-12 13:36:23,299 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 309 transitions, 4222 flow [2024-05-12 13:36:23,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:23,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:23,299 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 13:36:23,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:36:23,299 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 13:36:23,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1084542649, now seen corresponding path program 3 times [2024-05-12 13:36:23,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:23,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886580781] [2024-05-12 13:36:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:24,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:24,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886580781] [2024-05-12 13:36:24,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886580781] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:24,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:24,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:24,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611125439] [2024-05-12 13:36:24,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:24,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:24,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:24,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:24,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:24,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:24,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 309 transitions, 4222 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:24,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:24,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:24,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:26,358 INFO L124 PetriNetUnfolderBase]: 7903/12060 cut-off events. [2024-05-12 13:36:26,359 INFO L125 PetriNetUnfolderBase]: For 314604/314616 co-relation queries the response was YES. [2024-05-12 13:36:26,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80413 conditions, 12060 events. 7903/12060 cut-off events. For 314604/314616 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 75428 event pairs, 1689 based on Foata normal form. 27/11862 useless extension candidates. Maximal degree in co-relation 80325. Up to 10284 conditions per place. [2024-05-12 13:36:26,488 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 243 selfloop transitions, 123 changer transitions 0/373 dead transitions. [2024-05-12 13:36:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 373 transitions, 5270 flow [2024-05-12 13:36:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:26,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:26,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-05-12 13:36:26,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:36:26,490 INFO L175 Difference]: Start difference. First operand has 184 places, 309 transitions, 4222 flow. Second operand 9 states and 219 transitions. [2024-05-12 13:36:26,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 373 transitions, 5270 flow [2024-05-12 13:36:27,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 373 transitions, 5092 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:27,244 INFO L231 Difference]: Finished difference. Result has 188 places, 312 transitions, 4386 flow [2024-05-12 13:36:27,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4044, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4386, PETRI_PLACES=188, PETRI_TRANSITIONS=312} [2024-05-12 13:36:27,244 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 135 predicate places. [2024-05-12 13:36:27,244 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 312 transitions, 4386 flow [2024-05-12 13:36:27,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:27,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:27,245 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 13:36:27,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:36:27,245 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 13:36:27,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:27,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1171378609, now seen corresponding path program 4 times [2024-05-12 13:36:27,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:27,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84832482] [2024-05-12 13:36:27,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:27,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:28,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:28,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84832482] [2024-05-12 13:36:28,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84832482] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:28,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:28,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213730185] [2024-05-12 13:36:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:28,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:28,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 312 transitions, 4386 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 13:36:28,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:28,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:28,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:30,747 INFO L124 PetriNetUnfolderBase]: 7867/11998 cut-off events. [2024-05-12 13:36:30,747 INFO L125 PetriNetUnfolderBase]: For 305969/305981 co-relation queries the response was YES. [2024-05-12 13:36:30,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80322 conditions, 11998 events. 7867/11998 cut-off events. For 305969/305981 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 74844 event pairs, 1693 based on Foata normal form. 23/11798 useless extension candidates. Maximal degree in co-relation 80232. Up to 10030 conditions per place. [2024-05-12 13:36:30,850 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 250 selfloop transitions, 128 changer transitions 0/385 dead transitions. [2024-05-12 13:36:30,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 385 transitions, 5522 flow [2024-05-12 13:36:30,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:36:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:36:30,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 239 transitions. [2024-05-12 13:36:30,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085106382978724 [2024-05-12 13:36:30,855 INFO L175 Difference]: Start difference. First operand has 188 places, 312 transitions, 4386 flow. Second operand 10 states and 239 transitions. [2024-05-12 13:36:30,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 385 transitions, 5522 flow [2024-05-12 13:36:31,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 385 transitions, 5238 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 13:36:31,492 INFO L231 Difference]: Finished difference. Result has 191 places, 317 transitions, 4494 flow [2024-05-12 13:36:31,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4494, PETRI_PLACES=191, PETRI_TRANSITIONS=317} [2024-05-12 13:36:31,493 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-05-12 13:36:31,497 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 317 transitions, 4494 flow [2024-05-12 13:36:31,497 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 13:36:31,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:31,497 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 13:36:31,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:36:31,497 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 13:36:31,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:31,498 INFO L85 PathProgramCache]: Analyzing trace with hash 450289713, now seen corresponding path program 5 times [2024-05-12 13:36:31,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:31,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452128090] [2024-05-12 13:36:31,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:31,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:32,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:32,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:32,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452128090] [2024-05-12 13:36:32,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452128090] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:32,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:32,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:32,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911254479] [2024-05-12 13:36:32,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:32,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:32,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:32,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:32,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:32,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 317 transitions, 4494 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:32,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:32,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:32,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:34,901 INFO L124 PetriNetUnfolderBase]: 8219/12540 cut-off events. [2024-05-12 13:36:34,902 INFO L125 PetriNetUnfolderBase]: For 336007/336019 co-relation queries the response was YES. [2024-05-12 13:36:34,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84849 conditions, 12540 events. 8219/12540 cut-off events. For 336007/336019 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 78808 event pairs, 1908 based on Foata normal form. 19/12334 useless extension candidates. Maximal degree in co-relation 84758. Up to 10772 conditions per place. [2024-05-12 13:36:35,035 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 307 selfloop transitions, 71 changer transitions 0/385 dead transitions. [2024-05-12 13:36:35,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 385 transitions, 5790 flow [2024-05-12 13:36:35,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:35,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-05-12 13:36:35,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130023640661938 [2024-05-12 13:36:35,037 INFO L175 Difference]: Start difference. First operand has 191 places, 317 transitions, 4494 flow. Second operand 9 states and 217 transitions. [2024-05-12 13:36:35,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 385 transitions, 5790 flow [2024-05-12 13:36:35,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 385 transitions, 5514 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-05-12 13:36:35,818 INFO L231 Difference]: Finished difference. Result has 193 places, 321 transitions, 4511 flow [2024-05-12 13:36:35,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4218, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4511, PETRI_PLACES=193, PETRI_TRANSITIONS=321} [2024-05-12 13:36:35,819 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 140 predicate places. [2024-05-12 13:36:35,819 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 321 transitions, 4511 flow [2024-05-12 13:36:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:35,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:35,819 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 13:36:35,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:36:35,819 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 13:36:35,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:35,819 INFO L85 PathProgramCache]: Analyzing trace with hash 450293433, now seen corresponding path program 6 times [2024-05-12 13:36:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:35,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858388098] [2024-05-12 13:36:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:36,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858388098] [2024-05-12 13:36:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858388098] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:36:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915568550] [2024-05-12 13:36:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:36:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:36:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:36:36,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:36,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 321 transitions, 4511 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:36,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:36,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:36,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:39,210 INFO L124 PetriNetUnfolderBase]: 8323/12694 cut-off events. [2024-05-12 13:36:39,210 INFO L125 PetriNetUnfolderBase]: For 351398/351410 co-relation queries the response was YES. [2024-05-12 13:36:39,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85582 conditions, 12694 events. 8323/12694 cut-off events. For 351398/351410 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 79951 event pairs, 1926 based on Foata normal form. 27/12498 useless extension candidates. Maximal degree in co-relation 85490. Up to 11392 conditions per place. [2024-05-12 13:36:39,347 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 304 selfloop transitions, 71 changer transitions 0/382 dead transitions. [2024-05-12 13:36:39,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 382 transitions, 5573 flow [2024-05-12 13:36:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:36:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:36:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-05-12 13:36:39,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2024-05-12 13:36:39,349 INFO L175 Difference]: Start difference. First operand has 193 places, 321 transitions, 4511 flow. Second operand 9 states and 214 transitions. [2024-05-12 13:36:39,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 382 transitions, 5573 flow [2024-05-12 13:36:39,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 382 transitions, 5441 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-05-12 13:36:40,003 INFO L231 Difference]: Finished difference. Result has 197 places, 324 transitions, 4621 flow [2024-05-12 13:36:40,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4383, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4621, PETRI_PLACES=197, PETRI_TRANSITIONS=324} [2024-05-12 13:36:40,004 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 144 predicate places. [2024-05-12 13:36:40,004 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 324 transitions, 4621 flow [2024-05-12 13:36:40,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:36:40,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:40,005 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 13:36:40,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:36:40,005 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 13:36:40,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:40,005 INFO L85 PathProgramCache]: Analyzing trace with hash 456007725, now seen corresponding path program 1 times [2024-05-12 13:36:40,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:40,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729519952] [2024-05-12 13:36:40,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:40,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:41,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:41,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729519952] [2024-05-12 13:36:41,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729519952] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:41,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:41,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:41,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077180899] [2024-05-12 13:36:41,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:41,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:41,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:41,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:41,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:41,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:41,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 324 transitions, 4621 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 13:36:41,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:41,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:43,665 INFO L124 PetriNetUnfolderBase]: 8315/12688 cut-off events. [2024-05-12 13:36:43,666 INFO L125 PetriNetUnfolderBase]: For 338971/338983 co-relation queries the response was YES. [2024-05-12 13:36:43,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85866 conditions, 12688 events. 8315/12688 cut-off events. For 338971/338983 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 79965 event pairs, 1938 based on Foata normal form. 7/12470 useless extension candidates. Maximal degree in co-relation 85772. Up to 11578 conditions per place. [2024-05-12 13:36:43,803 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 315 selfloop transitions, 74 changer transitions 0/396 dead transitions. [2024-05-12 13:36:43,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 396 transitions, 5741 flow [2024-05-12 13:36:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:43,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:43,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 252 transitions. [2024-05-12 13:36:43,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874274661508704 [2024-05-12 13:36:43,804 INFO L175 Difference]: Start difference. First operand has 197 places, 324 transitions, 4621 flow. Second operand 11 states and 252 transitions. [2024-05-12 13:36:43,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 396 transitions, 5741 flow [2024-05-12 13:36:44,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 396 transitions, 5565 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 13:36:44,816 INFO L231 Difference]: Finished difference. Result has 201 places, 327 transitions, 4693 flow [2024-05-12 13:36:44,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4693, PETRI_PLACES=201, PETRI_TRANSITIONS=327} [2024-05-12 13:36:44,817 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 148 predicate places. [2024-05-12 13:36:44,817 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 327 transitions, 4693 flow [2024-05-12 13:36:44,817 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 13:36:44,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:44,817 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 13:36:44,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:36:44,818 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 13:36:44,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash 456015165, now seen corresponding path program 2 times [2024-05-12 13:36:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:44,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761731675] [2024-05-12 13:36:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:44,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:45,867 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 13:36:45,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:45,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761731675] [2024-05-12 13:36:45,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761731675] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:45,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:45,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:45,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838772640] [2024-05-12 13:36:45,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:45,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:45,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:45,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:45,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:45,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:45,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 327 transitions, 4693 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 13:36:45,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:45,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:45,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:48,415 INFO L124 PetriNetUnfolderBase]: 8349/12738 cut-off events. [2024-05-12 13:36:48,416 INFO L125 PetriNetUnfolderBase]: For 346130/346142 co-relation queries the response was YES. [2024-05-12 13:36:48,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86280 conditions, 12738 events. 8349/12738 cut-off events. For 346130/346142 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 80369 event pairs, 1906 based on Foata normal form. 7/12520 useless extension candidates. Maximal degree in co-relation 86185. Up to 11332 conditions per place. [2024-05-12 13:36:48,744 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 313 selfloop transitions, 83 changer transitions 0/403 dead transitions. [2024-05-12 13:36:48,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 403 transitions, 5847 flow [2024-05-12 13:36:48,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-05-12 13:36:48,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-05-12 13:36:48,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 256 transitions. [2024-05-12 13:36:48,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951644100580271 [2024-05-12 13:36:48,746 INFO L175 Difference]: Start difference. First operand has 201 places, 327 transitions, 4693 flow. Second operand 11 states and 256 transitions. [2024-05-12 13:36:48,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 403 transitions, 5847 flow [2024-05-12 13:36:49,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 403 transitions, 5633 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:49,489 INFO L231 Difference]: Finished difference. Result has 203 places, 330 transitions, 4739 flow [2024-05-12 13:36:49,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4479, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4739, PETRI_PLACES=203, PETRI_TRANSITIONS=330} [2024-05-12 13:36:49,490 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 150 predicate places. [2024-05-12 13:36:49,490 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 330 transitions, 4739 flow [2024-05-12 13:36:49,490 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 13:36:49,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:49,490 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 13:36:49,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:36:49,490 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 13:36:49,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:49,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1824621155, now seen corresponding path program 3 times [2024-05-12 13:36:49,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:49,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245675254] [2024-05-12 13:36:49,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:49,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:50,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:50,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:50,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245675254] [2024-05-12 13:36:50,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245675254] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:50,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:50,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:50,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299806172] [2024-05-12 13:36:50,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:50,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:50,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:50,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:50,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:50,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:50,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 330 transitions, 4739 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 13:36:50,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:50,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:50,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:53,056 INFO L124 PetriNetUnfolderBase]: 8393/12632 cut-off events. [2024-05-12 13:36:53,056 INFO L125 PetriNetUnfolderBase]: For 365633/365645 co-relation queries the response was YES. [2024-05-12 13:36:53,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87448 conditions, 12632 events. 8393/12632 cut-off events. For 365633/365645 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 77768 event pairs, 2386 based on Foata normal form. 12/12475 useless extension candidates. Maximal degree in co-relation 87352. Up to 11965 conditions per place. [2024-05-12 13:36:53,183 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 338 selfloop transitions, 34 changer transitions 0/379 dead transitions. [2024-05-12 13:36:53,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 379 transitions, 5733 flow [2024-05-12 13:36:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:53,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:53,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 177 transitions. [2024-05-12 13:36:53,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2024-05-12 13:36:53,184 INFO L175 Difference]: Start difference. First operand has 203 places, 330 transitions, 4739 flow. Second operand 8 states and 177 transitions. [2024-05-12 13:36:53,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 379 transitions, 5733 flow [2024-05-12 13:36:53,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 379 transitions, 5499 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-05-12 13:36:53,942 INFO L231 Difference]: Finished difference. Result has 204 places, 339 transitions, 4728 flow [2024-05-12 13:36:53,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4505, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4728, PETRI_PLACES=204, PETRI_TRANSITIONS=339} [2024-05-12 13:36:53,942 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 151 predicate places. [2024-05-12 13:36:53,942 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 339 transitions, 4728 flow [2024-05-12 13:36:53,942 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 13:36:53,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:53,943 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 13:36:53,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:36:53,943 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 13:36:53,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1365542229, now seen corresponding path program 4 times [2024-05-12 13:36:53,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:53,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973416222] [2024-05-12 13:36:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:53,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:54,958 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 13:36:54,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:54,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973416222] [2024-05-12 13:36:54,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973416222] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:54,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:54,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:54,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146632302] [2024-05-12 13:36:54,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:54,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:54,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:54,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:54,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:55,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:55,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 339 transitions, 4728 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 13:36:55,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:55,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:36:57,524 INFO L124 PetriNetUnfolderBase]: 8427/12846 cut-off events. [2024-05-12 13:36:57,524 INFO L125 PetriNetUnfolderBase]: For 379038/379050 co-relation queries the response was YES. [2024-05-12 13:36:57,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88380 conditions, 12846 events. 8427/12846 cut-off events. For 379038/379050 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 80811 event pairs, 2044 based on Foata normal form. 7/12630 useless extension candidates. Maximal degree in co-relation 88281. Up to 11662 conditions per place. [2024-05-12 13:36:57,657 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 302 selfloop transitions, 79 changer transitions 0/388 dead transitions. [2024-05-12 13:36:57,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 388 transitions, 5752 flow [2024-05-12 13:36:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:36:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:36:57,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:36:57,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:36:57,659 INFO L175 Difference]: Start difference. First operand has 204 places, 339 transitions, 4728 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:36:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 388 transitions, 5752 flow [2024-05-12 13:36:58,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 388 transitions, 5619 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-05-12 13:36:58,498 INFO L231 Difference]: Finished difference. Result has 208 places, 342 transitions, 4859 flow [2024-05-12 13:36:58,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4595, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4859, PETRI_PLACES=208, PETRI_TRANSITIONS=342} [2024-05-12 13:36:58,498 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 155 predicate places. [2024-05-12 13:36:58,498 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 342 transitions, 4859 flow [2024-05-12 13:36:58,498 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 13:36:58,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:36:58,498 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 13:36:58,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:36:58,498 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 13:36:58,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:36:58,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1537466915, now seen corresponding path program 5 times [2024-05-12 13:36:58,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:36:58,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389671680] [2024-05-12 13:36:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:36:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:36:58,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:36:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:36:59,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:36:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389671680] [2024-05-12 13:36:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389671680] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:36:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:36:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:36:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701086402] [2024-05-12 13:36:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:36:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:36:59,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:36:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:36:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:36:59,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:36:59,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 342 transitions, 4859 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 13:36:59,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:36:59,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:36:59,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:02,089 INFO L124 PetriNetUnfolderBase]: 8461/12900 cut-off events. [2024-05-12 13:37:02,089 INFO L125 PetriNetUnfolderBase]: For 399024/399036 co-relation queries the response was YES. [2024-05-12 13:37:02,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89616 conditions, 12900 events. 8461/12900 cut-off events. For 399024/399036 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 80857 event pairs, 2431 based on Foata normal form. 12/12687 useless extension candidates. Maximal degree in co-relation 89516. Up to 12033 conditions per place. [2024-05-12 13:37:02,229 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 336 selfloop transitions, 43 changer transitions 0/386 dead transitions. [2024-05-12 13:37:02,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 386 transitions, 5861 flow [2024-05-12 13:37:02,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 179 transitions. [2024-05-12 13:37:02,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47606382978723405 [2024-05-12 13:37:02,230 INFO L175 Difference]: Start difference. First operand has 208 places, 342 transitions, 4859 flow. Second operand 8 states and 179 transitions. [2024-05-12 13:37:02,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 386 transitions, 5861 flow [2024-05-12 13:37:03,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 386 transitions, 5627 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:03,260 INFO L231 Difference]: Finished difference. Result has 210 places, 345 transitions, 4824 flow [2024-05-12 13:37:03,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4625, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4824, PETRI_PLACES=210, PETRI_TRANSITIONS=345} [2024-05-12 13:37:03,260 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 157 predicate places. [2024-05-12 13:37:03,260 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 345 transitions, 4824 flow [2024-05-12 13:37:03,260 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 13:37:03,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:03,260 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 13:37:03,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:37:03,261 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 13:37:03,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:03,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1365534789, now seen corresponding path program 6 times [2024-05-12 13:37:03,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:03,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98213758] [2024-05-12 13:37:03,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:03,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:04,294 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 13:37:04,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:04,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98213758] [2024-05-12 13:37:04,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98213758] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:04,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:04,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:37:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461822461] [2024-05-12 13:37:04,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:04,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:37:04,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:04,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:37:04,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:37:04,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:04,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 345 transitions, 4824 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 13:37:04,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:04,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:04,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:06,830 INFO L124 PetriNetUnfolderBase]: 8690/13249 cut-off events. [2024-05-12 13:37:06,830 INFO L125 PetriNetUnfolderBase]: For 440880/440892 co-relation queries the response was YES. [2024-05-12 13:37:06,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93450 conditions, 13249 events. 8690/13249 cut-off events. For 440880/440892 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 83844 event pairs, 2084 based on Foata normal form. 7/13031 useless extension candidates. Maximal degree in co-relation 93349. Up to 11711 conditions per place. [2024-05-12 13:37:06,974 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 309 selfloop transitions, 87 changer transitions 0/403 dead transitions. [2024-05-12 13:37:06,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 403 transitions, 6188 flow [2024-05-12 13:37:06,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:06,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:06,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:37:06,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5159574468085106 [2024-05-12 13:37:06,975 INFO L175 Difference]: Start difference. First operand has 210 places, 345 transitions, 4824 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:37:06,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 403 transitions, 6188 flow [2024-05-12 13:37:08,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 403 transitions, 6021 flow, removed 43 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:08,201 INFO L231 Difference]: Finished difference. Result has 213 places, 351 transitions, 5063 flow [2024-05-12 13:37:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4657, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5063, PETRI_PLACES=213, PETRI_TRANSITIONS=351} [2024-05-12 13:37:08,201 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 160 predicate places. [2024-05-12 13:37:08,201 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 351 transitions, 5063 flow [2024-05-12 13:37:08,201 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 13:37:08,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:08,202 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 13:37:08,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:37:08,202 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 13:37:08,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:08,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2098733571, now seen corresponding path program 7 times [2024-05-12 13:37:08,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:08,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085600619] [2024-05-12 13:37:08,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:08,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:09,141 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 13:37:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085600619] [2024-05-12 13:37:09,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085600619] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:09,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:09,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:09,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080419850] [2024-05-12 13:37:09,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:09,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:09,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:09,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:09,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:09,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 351 transitions, 5063 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:09,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:09,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:09,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:11,886 INFO L124 PetriNetUnfolderBase]: 8654/13031 cut-off events. [2024-05-12 13:37:11,886 INFO L125 PetriNetUnfolderBase]: For 455847/455859 co-relation queries the response was YES. [2024-05-12 13:37:11,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93368 conditions, 13031 events. 8654/13031 cut-off events. For 455847/455859 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 80836 event pairs, 1745 based on Foata normal form. 23/12883 useless extension candidates. Maximal degree in co-relation 93265. Up to 11790 conditions per place. [2024-05-12 13:37:12,021 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 312 selfloop transitions, 88 changer transitions 0/407 dead transitions. [2024-05-12 13:37:12,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 407 transitions, 6077 flow [2024-05-12 13:37:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:12,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:37:12,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-05-12 13:37:12,023 INFO L175 Difference]: Start difference. First operand has 213 places, 351 transitions, 5063 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:37:12,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 407 transitions, 6077 flow [2024-05-12 13:37:13,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 407 transitions, 5845 flow, removed 69 selfloop flow, removed 5 redundant places. [2024-05-12 13:37:13,172 INFO L231 Difference]: Finished difference. Result has 216 places, 351 transitions, 5025 flow [2024-05-12 13:37:13,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4831, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5025, PETRI_PLACES=216, PETRI_TRANSITIONS=351} [2024-05-12 13:37:13,173 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 163 predicate places. [2024-05-12 13:37:13,173 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 351 transitions, 5025 flow [2024-05-12 13:37:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:13,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:13,173 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 13:37:13,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:37:13,173 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 13:37:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1814530655, now seen corresponding path program 7 times [2024-05-12 13:37:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504767754] [2024-05-12 13:37:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:13,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:14,225 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 13:37:14,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:14,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504767754] [2024-05-12 13:37:14,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504767754] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:14,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:14,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:37:14,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655769970] [2024-05-12 13:37:14,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:14,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:37:14,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:14,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:37:14,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:37:14,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:14,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 351 transitions, 5025 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 13:37:14,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:14,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:14,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:17,031 INFO L124 PetriNetUnfolderBase]: 8651/13024 cut-off events. [2024-05-12 13:37:17,031 INFO L125 PetriNetUnfolderBase]: For 445807/445819 co-relation queries the response was YES. [2024-05-12 13:37:17,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93238 conditions, 13024 events. 8651/13024 cut-off events. For 445807/445819 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 80588 event pairs, 2485 based on Foata normal form. 12/12865 useless extension candidates. Maximal degree in co-relation 93134. Up to 12205 conditions per place. [2024-05-12 13:37:17,194 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 338 selfloop transitions, 50 changer transitions 0/395 dead transitions. [2024-05-12 13:37:17,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 395 transitions, 6047 flow [2024-05-12 13:37:17,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:17,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:17,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2024-05-12 13:37:17,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2024-05-12 13:37:17,196 INFO L175 Difference]: Start difference. First operand has 216 places, 351 transitions, 5025 flow. Second operand 8 states and 180 transitions. [2024-05-12 13:37:17,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 395 transitions, 6047 flow [2024-05-12 13:37:18,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 395 transitions, 5838 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-05-12 13:37:18,503 INFO L231 Difference]: Finished difference. Result has 217 places, 354 transitions, 5033 flow [2024-05-12 13:37:18,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4816, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5033, PETRI_PLACES=217, PETRI_TRANSITIONS=354} [2024-05-12 13:37:18,504 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 164 predicate places. [2024-05-12 13:37:18,504 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 354 transitions, 5033 flow [2024-05-12 13:37:18,504 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 13:37:18,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:18,505 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 13:37:18,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:37:18,505 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 13:37:18,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -2104089999, now seen corresponding path program 8 times [2024-05-12 13:37:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85514732] [2024-05-12 13:37:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:18,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:19,599 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 13:37:19,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85514732] [2024-05-12 13:37:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85514732] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:19,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:19,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:37:19,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254378964] [2024-05-12 13:37:19,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:37:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:37:19,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:37:19,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:19,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 354 transitions, 5033 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 13:37:19,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:19,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:19,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:22,273 INFO L124 PetriNetUnfolderBase]: 8607/13120 cut-off events. [2024-05-12 13:37:22,273 INFO L125 PetriNetUnfolderBase]: For 454498/454510 co-relation queries the response was YES. [2024-05-12 13:37:22,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91965 conditions, 13120 events. 8607/13120 cut-off events. For 454498/454510 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 82820 event pairs, 2026 based on Foata normal form. 27/12922 useless extension candidates. Maximal degree in co-relation 91861. Up to 11732 conditions per place. [2024-05-12 13:37:22,450 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 319 selfloop transitions, 81 changer transitions 0/407 dead transitions. [2024-05-12 13:37:22,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 407 transitions, 6039 flow [2024-05-12 13:37:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:22,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:22,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:37:22,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186170212765957 [2024-05-12 13:37:22,451 INFO L175 Difference]: Start difference. First operand has 217 places, 354 transitions, 5033 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:37:22,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 407 transitions, 6039 flow [2024-05-12 13:37:24,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 407 transitions, 5808 flow, removed 68 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:24,037 INFO L231 Difference]: Finished difference. Result has 219 places, 354 transitions, 4974 flow [2024-05-12 13:37:24,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4802, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4974, PETRI_PLACES=219, PETRI_TRANSITIONS=354} [2024-05-12 13:37:24,037 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 166 predicate places. [2024-05-12 13:37:24,037 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 354 transitions, 4974 flow [2024-05-12 13:37:24,038 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 13:37:24,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:24,038 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 13:37:24,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:37:24,038 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 13:37:24,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:24,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1371260241, now seen corresponding path program 8 times [2024-05-12 13:37:24,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:24,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210491567] [2024-05-12 13:37:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:24,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:24,886 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 13:37:24,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:24,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210491567] [2024-05-12 13:37:24,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210491567] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:24,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:24,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:37:24,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90037317] [2024-05-12 13:37:24,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:24,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:37:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:24,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:37:24,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:37:24,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:24,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 354 transitions, 4974 flow. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:24,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:24,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:24,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:27,432 INFO L124 PetriNetUnfolderBase]: 8643/13180 cut-off events. [2024-05-12 13:37:27,432 INFO L125 PetriNetUnfolderBase]: For 443534/443546 co-relation queries the response was YES. [2024-05-12 13:37:27,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91747 conditions, 13180 events. 8643/13180 cut-off events. For 443534/443546 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 83180 event pairs, 1718 based on Foata normal form. 19/12974 useless extension candidates. Maximal degree in co-relation 91642. Up to 11120 conditions per place. [2024-05-12 13:37:27,578 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 315 selfloop transitions, 93 changer transitions 0/415 dead transitions. [2024-05-12 13:37:27,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 415 transitions, 6314 flow [2024-05-12 13:37:27,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:27,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:27,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:37:27,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292553191489362 [2024-05-12 13:37:27,579 INFO L175 Difference]: Start difference. First operand has 219 places, 354 transitions, 4974 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:37:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 415 transitions, 6314 flow [2024-05-12 13:37:28,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 415 transitions, 6148 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-05-12 13:37:28,824 INFO L231 Difference]: Finished difference. Result has 221 places, 356 transitions, 5088 flow [2024-05-12 13:37:28,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4808, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5088, PETRI_PLACES=221, PETRI_TRANSITIONS=356} [2024-05-12 13:37:28,824 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-05-12 13:37:28,824 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 356 transitions, 5088 flow [2024-05-12 13:37:28,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:28,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:28,824 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 13:37:28,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:37:28,825 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:28,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:28,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1288650401, now seen corresponding path program 1 times [2024-05-12 13:37:28,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:28,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515698475] [2024-05-12 13:37:28,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:28,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:29,745 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 13:37:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:29,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515698475] [2024-05-12 13:37:29,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515698475] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:29,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:29,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:29,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235143329] [2024-05-12 13:37:29,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:29,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:29,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:29,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:29,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:29,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:29,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 356 transitions, 5088 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:29,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:29,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:29,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:32,062 INFO L124 PetriNetUnfolderBase]: 8658/13198 cut-off events. [2024-05-12 13:37:32,062 INFO L125 PetriNetUnfolderBase]: For 441266/441266 co-relation queries the response was YES. [2024-05-12 13:37:32,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92177 conditions, 13198 events. 8658/13198 cut-off events. For 441266/441266 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 83169 event pairs, 2113 based on Foata normal form. 3/12977 useless extension candidates. Maximal degree in co-relation 92071. Up to 12251 conditions per place. [2024-05-12 13:37:32,215 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 379 selfloop transitions, 25 changer transitions 0/411 dead transitions. [2024-05-12 13:37:32,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 411 transitions, 6430 flow [2024-05-12 13:37:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:32,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-05-12 13:37:32,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177304964539007 [2024-05-12 13:37:32,216 INFO L175 Difference]: Start difference. First operand has 221 places, 356 transitions, 5088 flow. Second operand 6 states and 146 transitions. [2024-05-12 13:37:32,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 411 transitions, 6430 flow [2024-05-12 13:37:33,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 411 transitions, 5965 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-05-12 13:37:33,495 INFO L231 Difference]: Finished difference. Result has 221 places, 366 transitions, 4884 flow [2024-05-12 13:37:33,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4884, PETRI_PLACES=221, PETRI_TRANSITIONS=366} [2024-05-12 13:37:33,496 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 168 predicate places. [2024-05-12 13:37:33,496 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 366 transitions, 4884 flow [2024-05-12 13:37:33,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:33,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:33,496 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 13:37:33,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:37:33,496 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:33,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1001724408, now seen corresponding path program 1 times [2024-05-12 13:37:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690466108] [2024-05-12 13:37:33,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:34,423 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 13:37:34,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:34,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690466108] [2024-05-12 13:37:34,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690466108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:34,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:34,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:34,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431450429] [2024-05-12 13:37:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:34,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:34,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:34,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:34,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:34,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:34,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 366 transitions, 4884 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:34,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:34,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:34,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:36,873 INFO L124 PetriNetUnfolderBase]: 8698/13438 cut-off events. [2024-05-12 13:37:36,873 INFO L125 PetriNetUnfolderBase]: For 441846/441858 co-relation queries the response was YES. [2024-05-12 13:37:36,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91244 conditions, 13438 events. 8698/13438 cut-off events. For 441846/441858 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 85596 event pairs, 2455 based on Foata normal form. 10/13162 useless extension candidates. Maximal degree in co-relation 91137. Up to 12409 conditions per place. [2024-05-12 13:37:37,032 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 378 selfloop transitions, 28 changer transitions 0/413 dead transitions. [2024-05-12 13:37:37,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 413 transitions, 6278 flow [2024-05-12 13:37:37,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:37:37,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:37:37,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-05-12 13:37:37,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48226950354609927 [2024-05-12 13:37:37,033 INFO L175 Difference]: Start difference. First operand has 221 places, 366 transitions, 4884 flow. Second operand 6 states and 136 transitions. [2024-05-12 13:37:37,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 413 transitions, 6278 flow [2024-05-12 13:37:38,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 413 transitions, 6232 flow, removed 22 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:38,338 INFO L231 Difference]: Finished difference. Result has 228 places, 379 transitions, 5137 flow [2024-05-12 13:37:38,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=4846, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5137, PETRI_PLACES=228, PETRI_TRANSITIONS=379} [2024-05-12 13:37:38,339 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 175 predicate places. [2024-05-12 13:37:38,339 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 379 transitions, 5137 flow [2024-05-12 13:37:38,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:38,339 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 13:37:38,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:37:38,340 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -602445226, now seen corresponding path program 2 times [2024-05-12 13:37:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993047965] [2024-05-12 13:37:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:39,274 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 13:37:39,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:39,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993047965] [2024-05-12 13:37:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993047965] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:39,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:37:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573198324] [2024-05-12 13:37:39,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:39,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:37:39,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:39,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:37:39,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:37:39,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:39,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 379 transitions, 5137 flow. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:39,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:39,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:39,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:41,786 INFO L124 PetriNetUnfolderBase]: 8792/13590 cut-off events. [2024-05-12 13:37:41,786 INFO L125 PetriNetUnfolderBase]: For 461585/461597 co-relation queries the response was YES. [2024-05-12 13:37:41,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93330 conditions, 13590 events. 8792/13590 cut-off events. For 461585/461597 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 86761 event pairs, 2499 based on Foata normal form. 14/13310 useless extension candidates. Maximal degree in co-relation 93218. Up to 12453 conditions per place. [2024-05-12 13:37:41,959 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 365 selfloop transitions, 39 changer transitions 0/411 dead transitions. [2024-05-12 13:37:41,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 411 transitions, 6278 flow [2024-05-12 13:37:41,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:37:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:37:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-05-12 13:37:41,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5063829787234042 [2024-05-12 13:37:41,960 INFO L175 Difference]: Start difference. First operand has 228 places, 379 transitions, 5137 flow. Second operand 5 states and 119 transitions. [2024-05-12 13:37:41,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 411 transitions, 6278 flow [2024-05-12 13:37:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 411 transitions, 6254 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-05-12 13:37:43,531 INFO L231 Difference]: Finished difference. Result has 232 places, 387 transitions, 5403 flow [2024-05-12 13:37:43,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5115, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5403, PETRI_PLACES=232, PETRI_TRANSITIONS=387} [2024-05-12 13:37:43,532 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 179 predicate places. [2024-05-12 13:37:43,532 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 387 transitions, 5403 flow [2024-05-12 13:37:43,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:43,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:43,532 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 13:37:43,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:37:43,532 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:43,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1202343822, now seen corresponding path program 1 times [2024-05-12 13:37:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:43,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085352943] [2024-05-12 13:37:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:43,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:45,170 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 13:37:45,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:45,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085352943] [2024-05-12 13:37:45,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085352943] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381875686] [2024-05-12 13:37:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:45,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:45,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:45,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 47 [2024-05-12 13:37:45,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 387 transitions, 5403 flow. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:45,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:45,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 47 [2024-05-12 13:37:45,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:47,709 INFO L124 PetriNetUnfolderBase]: 8481/13248 cut-off events. [2024-05-12 13:37:47,710 INFO L125 PetriNetUnfolderBase]: For 471208/471311 co-relation queries the response was YES. [2024-05-12 13:37:47,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92116 conditions, 13248 events. 8481/13248 cut-off events. For 471208/471311 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 85431 event pairs, 2426 based on Foata normal form. 17/12927 useless extension candidates. Maximal degree in co-relation 92001. Up to 12000 conditions per place. [2024-05-12 13:37:47,884 INFO L140 encePairwiseOnDemand]: 41/47 looper letters, 362 selfloop transitions, 22 changer transitions 0/409 dead transitions. [2024-05-12 13:37:47,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 409 transitions, 6391 flow [2024-05-12 13:37:47,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:37:47,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:37:47,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-05-12 13:37:47,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:37:47,885 INFO L175 Difference]: Start difference. First operand has 232 places, 387 transitions, 5403 flow. Second operand 5 states and 115 transitions. [2024-05-12 13:37:47,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 409 transitions, 6391 flow [2024-05-12 13:37:49,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 409 transitions, 6246 flow, removed 46 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:49,438 INFO L231 Difference]: Finished difference. Result has 234 places, 389 transitions, 5357 flow [2024-05-12 13:37:49,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5258, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5357, PETRI_PLACES=234, PETRI_TRANSITIONS=389} [2024-05-12 13:37:49,439 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 181 predicate places. [2024-05-12 13:37:49,439 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 389 transitions, 5357 flow [2024-05-12 13:37:49,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 9 states have internal predecessors, (115), 0 states have call successors, (0), 0 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 13:37:49,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:49,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:37:49,440 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:49,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:49,440 INFO L85 PathProgramCache]: Analyzing trace with hash -873342507, now seen corresponding path program 1 times [2024-05-12 13:37:49,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:49,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392479313] [2024-05-12 13:37:49,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:49,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:50,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:50,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392479313] [2024-05-12 13:37:50,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392479313] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:50,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:50,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:37:50,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964081482] [2024-05-12 13:37:50,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:50,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:37:50,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:50,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:37:50,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:37:50,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:50,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 389 transitions, 5357 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:37:50,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:50,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:50,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:53,457 INFO L124 PetriNetUnfolderBase]: 8802/13597 cut-off events. [2024-05-12 13:37:53,457 INFO L125 PetriNetUnfolderBase]: For 472322/472322 co-relation queries the response was YES. [2024-05-12 13:37:53,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94911 conditions, 13597 events. 8802/13597 cut-off events. For 472322/472322 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 87053 event pairs, 2174 based on Foata normal form. 1/13306 useless extension candidates. Maximal degree in co-relation 94795. Up to 12489 conditions per place. [2024-05-12 13:37:53,636 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 431 selfloop transitions, 49 changer transitions 0/487 dead transitions. [2024-05-12 13:37:53,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 487 transitions, 7617 flow [2024-05-12 13:37:53,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:37:53,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:37:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:37:53,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:37:53,637 INFO L175 Difference]: Start difference. First operand has 234 places, 389 transitions, 5357 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:37:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 487 transitions, 7617 flow [2024-05-12 13:37:55,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 487 transitions, 7504 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-05-12 13:37:55,089 INFO L231 Difference]: Finished difference. Result has 243 places, 421 transitions, 6022 flow [2024-05-12 13:37:55,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6022, PETRI_PLACES=243, PETRI_TRANSITIONS=421} [2024-05-12 13:37:55,089 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 190 predicate places. [2024-05-12 13:37:55,089 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 421 transitions, 6022 flow [2024-05-12 13:37:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:37:55,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:37:55,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:37:55,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:37:55,090 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:37:55,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:37:55,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1953184437, now seen corresponding path program 1 times [2024-05-12 13:37:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:37:55,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619891901] [2024-05-12 13:37:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:37:55,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:37:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:37:56,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:37:56,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:37:56,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619891901] [2024-05-12 13:37:56,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619891901] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:37:56,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:37:56,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:37:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582183455] [2024-05-12 13:37:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:37:56,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:37:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:37:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:37:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:37:56,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:37:56,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 421 transitions, 6022 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:37:56,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:37:56,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:37:56,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:37:59,296 INFO L124 PetriNetUnfolderBase]: 8782/13190 cut-off events. [2024-05-12 13:37:59,297 INFO L125 PetriNetUnfolderBase]: For 490947/490959 co-relation queries the response was YES. [2024-05-12 13:37:59,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95817 conditions, 13190 events. 8782/13190 cut-off events. For 490947/490959 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 81668 event pairs, 1860 based on Foata normal form. 15/13038 useless extension candidates. Maximal degree in co-relation 95696. Up to 12030 conditions per place. [2024-05-12 13:37:59,482 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 377 selfloop transitions, 98 changer transitions 0/482 dead transitions. [2024-05-12 13:37:59,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 482 transitions, 7241 flow [2024-05-12 13:37:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:37:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:37:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 212 transitions. [2024-05-12 13:37:59,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011820330969267 [2024-05-12 13:37:59,483 INFO L175 Difference]: Start difference. First operand has 243 places, 421 transitions, 6022 flow. Second operand 9 states and 212 transitions. [2024-05-12 13:37:59,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 482 transitions, 7241 flow [2024-05-12 13:38:01,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 482 transitions, 7125 flow, removed 57 selfloop flow, removed 1 redundant places. [2024-05-12 13:38:01,445 INFO L231 Difference]: Finished difference. Result has 252 places, 423 transitions, 6167 flow [2024-05-12 13:38:01,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5914, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6167, PETRI_PLACES=252, PETRI_TRANSITIONS=423} [2024-05-12 13:38:01,445 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 199 predicate places. [2024-05-12 13:38:01,445 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 423 transitions, 6167 flow [2024-05-12 13:38:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:01,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:01,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:01,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:38:01,446 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:01,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1078849111, now seen corresponding path program 2 times [2024-05-12 13:38:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045647236] [2024-05-12 13:38:01,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:01,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:03,013 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 13:38:03,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:03,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045647236] [2024-05-12 13:38:03,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045647236] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:03,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:03,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:38:03,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542157820] [2024-05-12 13:38:03,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:03,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:38:03,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:38:03,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:38:03,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:03,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 423 transitions, 6167 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:03,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:03,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:03,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:06,203 INFO L124 PetriNetUnfolderBase]: 8762/13158 cut-off events. [2024-05-12 13:38:06,203 INFO L125 PetriNetUnfolderBase]: For 483556/483568 co-relation queries the response was YES. [2024-05-12 13:38:06,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95533 conditions, 13158 events. 8762/13158 cut-off events. For 483556/483568 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 81447 event pairs, 1932 based on Foata normal form. 15/13006 useless extension candidates. Maximal degree in co-relation 95408. Up to 12162 conditions per place. [2024-05-12 13:38:06,357 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 410 selfloop transitions, 72 changer transitions 0/489 dead transitions. [2024-05-12 13:38:06,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 489 transitions, 7410 flow [2024-05-12 13:38:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:38:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:38:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 230 transitions. [2024-05-12 13:38:06,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48936170212765956 [2024-05-12 13:38:06,358 INFO L175 Difference]: Start difference. First operand has 252 places, 423 transitions, 6167 flow. Second operand 10 states and 230 transitions. [2024-05-12 13:38:06,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 489 transitions, 7410 flow [2024-05-12 13:38:07,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 489 transitions, 7153 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:07,833 INFO L231 Difference]: Finished difference. Result has 257 places, 425 transitions, 6112 flow [2024-05-12 13:38:07,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5910, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6112, PETRI_PLACES=257, PETRI_TRANSITIONS=425} [2024-05-12 13:38:07,834 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 204 predicate places. [2024-05-12 13:38:07,834 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 425 transitions, 6112 flow [2024-05-12 13:38:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:07,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:07,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:07,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:38:07,835 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:07,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:07,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1251569641, now seen corresponding path program 3 times [2024-05-12 13:38:07,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:07,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588185058] [2024-05-12 13:38:07,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:07,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:09,198 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 13:38:09,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:09,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588185058] [2024-05-12 13:38:09,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588185058] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:09,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:09,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:38:09,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990248800] [2024-05-12 13:38:09,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:09,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:38:09,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:09,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:38:09,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:38:09,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 425 transitions, 6112 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:09,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:12,432 INFO L124 PetriNetUnfolderBase]: 8848/13292 cut-off events. [2024-05-12 13:38:12,433 INFO L125 PetriNetUnfolderBase]: For 498413/498425 co-relation queries the response was YES. [2024-05-12 13:38:12,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96422 conditions, 13292 events. 8848/13292 cut-off events. For 498413/498425 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 82458 event pairs, 1934 based on Foata normal form. 15/13140 useless extension candidates. Maximal degree in co-relation 96295. Up to 11946 conditions per place. [2024-05-12 13:38:12,611 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 414 selfloop transitions, 89 changer transitions 0/510 dead transitions. [2024-05-12 13:38:12,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 510 transitions, 7535 flow [2024-05-12 13:38:12,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-05-12 13:38:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-05-12 13:38:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-05-12 13:38:12,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-05-12 13:38:12,612 INFO L175 Difference]: Start difference. First operand has 257 places, 425 transitions, 6112 flow. Second operand 12 states and 278 transitions. [2024-05-12 13:38:12,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 510 transitions, 7535 flow [2024-05-12 13:38:14,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 510 transitions, 7346 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-05-12 13:38:14,176 INFO L231 Difference]: Finished difference. Result has 262 places, 427 transitions, 6200 flow [2024-05-12 13:38:14,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6200, PETRI_PLACES=262, PETRI_TRANSITIONS=427} [2024-05-12 13:38:14,176 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 209 predicate places. [2024-05-12 13:38:14,177 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 427 transitions, 6200 flow [2024-05-12 13:38:14,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:14,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:14,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:14,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:38:14,177 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:14,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:14,177 INFO L85 PathProgramCache]: Analyzing trace with hash -802279115, now seen corresponding path program 4 times [2024-05-12 13:38:14,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:14,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097799573] [2024-05-12 13:38:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:15,396 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 13:38:15,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:15,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097799573] [2024-05-12 13:38:15,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097799573] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:15,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:15,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-05-12 13:38:15,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566781305] [2024-05-12 13:38:15,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:15,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-05-12 13:38:15,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:15,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-05-12 13:38:15,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-05-12 13:38:15,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:15,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 427 transitions, 6200 flow. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:15,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:15,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:15,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:18,308 INFO L124 PetriNetUnfolderBase]: 8828/13422 cut-off events. [2024-05-12 13:38:18,308 INFO L125 PetriNetUnfolderBase]: For 498282/498294 co-relation queries the response was YES. [2024-05-12 13:38:18,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96278 conditions, 13422 events. 8828/13422 cut-off events. For 498282/498294 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 84596 event pairs, 2016 based on Foata normal form. 15/13216 useless extension candidates. Maximal degree in co-relation 96150. Up to 12175 conditions per place. [2024-05-12 13:38:18,480 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 395 selfloop transitions, 81 changer transitions 0/483 dead transitions. [2024-05-12 13:38:18,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 483 transitions, 7493 flow [2024-05-12 13:38:18,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:18,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:18,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:38:18,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026595744680851 [2024-05-12 13:38:18,481 INFO L175 Difference]: Start difference. First operand has 262 places, 427 transitions, 6200 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:38:18,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 483 transitions, 7493 flow [2024-05-12 13:38:19,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 483 transitions, 7216 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-05-12 13:38:19,972 INFO L231 Difference]: Finished difference. Result has 261 places, 432 transitions, 6270 flow [2024-05-12 13:38:19,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5943, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6270, PETRI_PLACES=261, PETRI_TRANSITIONS=432} [2024-05-12 13:38:19,972 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 208 predicate places. [2024-05-12 13:38:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 432 transitions, 6270 flow [2024-05-12 13:38:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:19,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:19,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:19,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:38:19,973 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:19,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash 618095915, now seen corresponding path program 5 times [2024-05-12 13:38:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77543144] [2024-05-12 13:38:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:21,571 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 13:38:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77543144] [2024-05-12 13:38:21,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77543144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:21,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:21,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:38:21,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127786610] [2024-05-12 13:38:21,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:21,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:38:21,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:21,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:38:21,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:38:21,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:21,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 432 transitions, 6270 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:21,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:21,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:21,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:24,703 INFO L124 PetriNetUnfolderBase]: 8914/13556 cut-off events. [2024-05-12 13:38:24,703 INFO L125 PetriNetUnfolderBase]: For 511554/511566 co-relation queries the response was YES. [2024-05-12 13:38:24,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97237 conditions, 13556 events. 8914/13556 cut-off events. For 511554/511566 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 85684 event pairs, 2034 based on Foata normal form. 15/13350 useless extension candidates. Maximal degree in co-relation 97107. Up to 12315 conditions per place. [2024-05-12 13:38:24,856 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 405 selfloop transitions, 78 changer transitions 0/490 dead transitions. [2024-05-12 13:38:24,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 490 transitions, 7537 flow [2024-05-12 13:38:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:24,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:38:24,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491725768321513 [2024-05-12 13:38:24,857 INFO L175 Difference]: Start difference. First operand has 261 places, 432 transitions, 6270 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:38:24,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 490 transitions, 7537 flow [2024-05-12 13:38:26,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 490 transitions, 7254 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:26,508 INFO L231 Difference]: Finished difference. Result has 264 places, 434 transitions, 6246 flow [2024-05-12 13:38:26,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=5987, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6246, PETRI_PLACES=264, PETRI_TRANSITIONS=434} [2024-05-12 13:38:26,508 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 211 predicate places. [2024-05-12 13:38:26,508 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 434 transitions, 6246 flow [2024-05-12 13:38:26,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:26,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:26,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:26,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:38:26,509 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:26,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash 415876871, now seen corresponding path program 6 times [2024-05-12 13:38:26,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:26,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806935668] [2024-05-12 13:38:26,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:26,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:26,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:27,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:27,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:27,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806935668] [2024-05-12 13:38:27,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806935668] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:27,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:27,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:38:27,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468360856] [2024-05-12 13:38:27,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:27,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:38:27,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:27,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:38:27,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:38:27,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:27,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 434 transitions, 6246 flow. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:27,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:27,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:27,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:30,672 INFO L124 PetriNetUnfolderBase]: 9010/13704 cut-off events. [2024-05-12 13:38:30,672 INFO L125 PetriNetUnfolderBase]: For 535932/535944 co-relation queries the response was YES. [2024-05-12 13:38:30,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98876 conditions, 13704 events. 9010/13704 cut-off events. For 535932/535944 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 86731 event pairs, 2046 based on Foata normal form. 15/13498 useless extension candidates. Maximal degree in co-relation 98745. Up to 12188 conditions per place. [2024-05-12 13:38:30,838 INFO L140 encePairwiseOnDemand]: 36/47 looper letters, 386 selfloop transitions, 97 changer transitions 0/490 dead transitions. [2024-05-12 13:38:30,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 490 transitions, 7727 flow [2024-05-12 13:38:30,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:30,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:30,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:38:30,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920212765957447 [2024-05-12 13:38:30,848 INFO L175 Difference]: Start difference. First operand has 264 places, 434 transitions, 6246 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:38:30,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 490 transitions, 7727 flow [2024-05-12 13:38:32,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 490 transitions, 7501 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-05-12 13:38:32,477 INFO L231 Difference]: Finished difference. Result has 268 places, 442 transitions, 6615 flow [2024-05-12 13:38:32,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6020, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6615, PETRI_PLACES=268, PETRI_TRANSITIONS=442} [2024-05-12 13:38:32,478 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 215 predicate places. [2024-05-12 13:38:32,478 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 442 transitions, 6615 flow [2024-05-12 13:38:32,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:38:32,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:32,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:32,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:38:32,478 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:32,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:32,478 INFO L85 PathProgramCache]: Analyzing trace with hash 728682371, now seen corresponding path program 7 times [2024-05-12 13:38:32,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:32,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771184216] [2024-05-12 13:38:32,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:32,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:33,776 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 13:38:33,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:33,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771184216] [2024-05-12 13:38:33,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771184216] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:33,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:33,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-05-12 13:38:33,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17375369] [2024-05-12 13:38:33,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:33,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-05-12 13:38:33,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:33,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-05-12 13:38:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-05-12 13:38:34,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:34,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 442 transitions, 6615 flow. Second operand has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:34,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:34,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:34,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:37,141 INFO L124 PetriNetUnfolderBase]: 9003/13689 cut-off events. [2024-05-12 13:38:37,141 INFO L125 PetriNetUnfolderBase]: For 540172/540184 co-relation queries the response was YES. [2024-05-12 13:38:37,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99133 conditions, 13689 events. 9003/13689 cut-off events. For 540172/540184 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 86065 event pairs, 2418 based on Foata normal form. 20/13488 useless extension candidates. Maximal degree in co-relation 98999. Up to 12752 conditions per place. [2024-05-12 13:38:37,359 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 449 selfloop transitions, 37 changer transitions 0/493 dead transitions. [2024-05-12 13:38:37,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 493 transitions, 7750 flow [2024-05-12 13:38:37,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:38:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:38:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 198 transitions. [2024-05-12 13:38:37,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46808510638297873 [2024-05-12 13:38:37,360 INFO L175 Difference]: Start difference. First operand has 268 places, 442 transitions, 6615 flow. Second operand 9 states and 198 transitions. [2024-05-12 13:38:37,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 493 transitions, 7750 flow [2024-05-12 13:38:39,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 493 transitions, 7410 flow, removed 136 selfloop flow, removed 3 redundant places. [2024-05-12 13:38:39,952 INFO L231 Difference]: Finished difference. Result has 273 places, 443 transitions, 6350 flow [2024-05-12 13:38:39,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6167, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6350, PETRI_PLACES=273, PETRI_TRANSITIONS=443} [2024-05-12 13:38:39,952 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 220 predicate places. [2024-05-12 13:38:39,952 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 443 transitions, 6350 flow [2024-05-12 13:38:39,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.333333333333334) internal successors, (136), 12 states have internal predecessors, (136), 0 states have call successors, (0), 0 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 13:38:39,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:39,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:39,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:38:39,953 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:39,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:39,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1166443213, now seen corresponding path program 2 times [2024-05-12 13:38:39,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:39,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727439459] [2024-05-12 13:38:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:41,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:41,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:41,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727439459] [2024-05-12 13:38:41,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727439459] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:41,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:41,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:41,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656004586] [2024-05-12 13:38:41,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:41,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:41,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:41,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:41,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:41,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:41,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 443 transitions, 6350 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:38:41,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:41,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:41,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:44,573 INFO L124 PetriNetUnfolderBase]: 9120/13838 cut-off events. [2024-05-12 13:38:44,573 INFO L125 PetriNetUnfolderBase]: For 520394/520394 co-relation queries the response was YES. [2024-05-12 13:38:44,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99795 conditions, 13838 events. 9120/13838 cut-off events. For 520394/520394 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 87148 event pairs, 2152 based on Foata normal form. 3/13623 useless extension candidates. Maximal degree in co-relation 99659. Up to 12978 conditions per place. [2024-05-12 13:38:44,875 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 454 selfloop transitions, 72 changer transitions 0/533 dead transitions. [2024-05-12 13:38:44,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 533 transitions, 8514 flow [2024-05-12 13:38:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:38:44,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:38:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-05-12 13:38:44,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973404255319149 [2024-05-12 13:38:44,877 INFO L175 Difference]: Start difference. First operand has 273 places, 443 transitions, 6350 flow. Second operand 8 states and 187 transitions. [2024-05-12 13:38:44,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 533 transitions, 8514 flow [2024-05-12 13:38:46,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 533 transitions, 8361 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-05-12 13:38:46,380 INFO L231 Difference]: Finished difference. Result has 277 places, 488 transitions, 7456 flow [2024-05-12 13:38:46,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6201, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7456, PETRI_PLACES=277, PETRI_TRANSITIONS=488} [2024-05-12 13:38:46,380 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 224 predicate places. [2024-05-12 13:38:46,380 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 488 transitions, 7456 flow [2024-05-12 13:38:46,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:38:46,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:46,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:46,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:38:46,380 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:46,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:46,381 INFO L85 PathProgramCache]: Analyzing trace with hash -48038529, now seen corresponding path program 1 times [2024-05-12 13:38:46,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:46,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910935651] [2024-05-12 13:38:46,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:46,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:47,872 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 13:38:47,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:47,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910935651] [2024-05-12 13:38:47,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910935651] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:47,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:47,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:47,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750541643] [2024-05-12 13:38:47,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:47,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:47,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:47,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:47,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:47,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:47,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 488 transitions, 7456 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:38:47,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:47,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:47,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:51,560 INFO L124 PetriNetUnfolderBase]: 9200/14156 cut-off events. [2024-05-12 13:38:51,560 INFO L125 PetriNetUnfolderBase]: For 547146/547158 co-relation queries the response was YES. [2024-05-12 13:38:51,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102426 conditions, 14156 events. 9200/14156 cut-off events. For 547146/547158 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 90183 event pairs, 2522 based on Foata normal form. 12/13880 useless extension candidates. Maximal degree in co-relation 102286. Up to 12828 conditions per place. [2024-05-12 13:38:51,724 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 477 selfloop transitions, 51 changer transitions 0/535 dead transitions. [2024-05-12 13:38:51,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 535 transitions, 9128 flow [2024-05-12 13:38:51,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:38:51,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:38:51,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 160 transitions. [2024-05-12 13:38:51,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48632218844984804 [2024-05-12 13:38:51,725 INFO L175 Difference]: Start difference. First operand has 277 places, 488 transitions, 7456 flow. Second operand 7 states and 160 transitions. [2024-05-12 13:38:51,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 535 transitions, 9128 flow [2024-05-12 13:38:53,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 535 transitions, 8664 flow, removed 226 selfloop flow, removed 2 redundant places. [2024-05-12 13:38:53,631 INFO L231 Difference]: Finished difference. Result has 282 places, 494 transitions, 7202 flow [2024-05-12 13:38:53,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=6992, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7202, PETRI_PLACES=282, PETRI_TRANSITIONS=494} [2024-05-12 13:38:53,632 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 229 predicate places. [2024-05-12 13:38:53,632 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 494 transitions, 7202 flow [2024-05-12 13:38:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:38:53,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:38:53,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:38:53,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:38:53,632 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:38:53,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:38:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1495931247, now seen corresponding path program 2 times [2024-05-12 13:38:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:38:53,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056182151] [2024-05-12 13:38:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:38:53,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:38:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:38:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:38:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:38:55,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056182151] [2024-05-12 13:38:55,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056182151] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:38:55,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:38:55,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:38:55,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628452085] [2024-05-12 13:38:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:38:55,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:38:55,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:38:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:38:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:38:55,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:38:55,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 494 transitions, 7202 flow. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:38:55,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:38:55,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:38:55,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:38:58,683 INFO L124 PetriNetUnfolderBase]: 9208/14195 cut-off events. [2024-05-12 13:38:58,683 INFO L125 PetriNetUnfolderBase]: For 550010/550022 co-relation queries the response was YES. [2024-05-12 13:38:58,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102803 conditions, 14195 events. 9208/14195 cut-off events. For 550010/550022 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 90836 event pairs, 2487 based on Foata normal form. 12/13910 useless extension candidates. Maximal degree in co-relation 102661. Up to 12941 conditions per place. [2024-05-12 13:38:58,865 INFO L140 encePairwiseOnDemand]: 38/47 looper letters, 472 selfloop transitions, 50 changer transitions 0/529 dead transitions. [2024-05-12 13:38:58,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 529 transitions, 8568 flow [2024-05-12 13:38:58,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:38:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:38:58,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2024-05-12 13:38:58,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4929078014184397 [2024-05-12 13:38:58,866 INFO L175 Difference]: Start difference. First operand has 282 places, 494 transitions, 7202 flow. Second operand 6 states and 139 transitions. [2024-05-12 13:38:58,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 529 transitions, 8568 flow [2024-05-12 13:39:01,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 529 transitions, 8474 flow, removed 30 selfloop flow, removed 3 redundant places. [2024-05-12 13:39:01,007 INFO L231 Difference]: Finished difference. Result has 285 places, 497 transitions, 7269 flow [2024-05-12 13:39:01,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7124, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7269, PETRI_PLACES=285, PETRI_TRANSITIONS=497} [2024-05-12 13:39:01,008 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 232 predicate places. [2024-05-12 13:39:01,008 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 497 transitions, 7269 flow [2024-05-12 13:39:01,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 9 states have internal predecessors, (106), 0 states have call successors, (0), 0 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 13:39:01,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:01,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:01,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:39:01,008 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:01,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -301451748, now seen corresponding path program 1 times [2024-05-12 13:39:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:01,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716467486] [2024-05-12 13:39:01,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:01,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:02,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:02,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716467486] [2024-05-12 13:39:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716467486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748045358] [2024-05-12 13:39:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:02,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:02,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:02,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:02,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:02,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 497 transitions, 7269 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:39:02,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:02,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:02,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:06,211 INFO L124 PetriNetUnfolderBase]: 9241/14248 cut-off events. [2024-05-12 13:39:06,211 INFO L125 PetriNetUnfolderBase]: For 552305/552305 co-relation queries the response was YES. [2024-05-12 13:39:06,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103401 conditions, 14248 events. 9241/14248 cut-off events. For 552305/552305 co-relation queries the response was YES. Maximal size of possible extension queue 575. Compared 91294 event pairs, 1923 based on Foata normal form. 2/13951 useless extension candidates. Maximal degree in co-relation 103257. Up to 12951 conditions per place. [2024-05-12 13:39:06,384 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 500 selfloop transitions, 73 changer transitions 0/580 dead transitions. [2024-05-12 13:39:06,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 580 transitions, 9493 flow [2024-05-12 13:39:06,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:39:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:39:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-05-12 13:39:06,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49645390070921985 [2024-05-12 13:39:06,385 INFO L175 Difference]: Start difference. First operand has 285 places, 497 transitions, 7269 flow. Second operand 9 states and 210 transitions. [2024-05-12 13:39:06,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 580 transitions, 9493 flow [2024-05-12 13:39:08,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 580 transitions, 9383 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-05-12 13:39:08,217 INFO L231 Difference]: Finished difference. Result has 291 places, 504 transitions, 7512 flow [2024-05-12 13:39:08,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7159, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7512, PETRI_PLACES=291, PETRI_TRANSITIONS=504} [2024-05-12 13:39:08,217 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 238 predicate places. [2024-05-12 13:39:08,217 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 504 transitions, 7512 flow [2024-05-12 13:39:08,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:39:08,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:08,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:08,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:39:08,218 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:08,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:08,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1303812676, now seen corresponding path program 2 times [2024-05-12 13:39:08,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:08,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859954656] [2024-05-12 13:39:08,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:08,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:09,940 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 13:39:09,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:09,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859954656] [2024-05-12 13:39:09,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859954656] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:09,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:09,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:09,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698212216] [2024-05-12 13:39:09,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:09,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:09,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:09,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:10,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:10,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 504 transitions, 7512 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:39:10,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:10,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:10,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:14,101 INFO L124 PetriNetUnfolderBase]: 9403/14095 cut-off events. [2024-05-12 13:39:14,102 INFO L125 PetriNetUnfolderBase]: For 576522/576522 co-relation queries the response was YES. [2024-05-12 13:39:14,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106231 conditions, 14095 events. 9403/14095 cut-off events. For 576522/576522 co-relation queries the response was YES. Maximal size of possible extension queue 585. Compared 87687 event pairs, 2169 based on Foata normal form. 2/13924 useless extension candidates. Maximal degree in co-relation 106085. Up to 13219 conditions per place. [2024-05-12 13:39:14,280 INFO L140 encePairwiseOnDemand]: 35/47 looper letters, 543 selfloop transitions, 52 changer transitions 0/602 dead transitions. [2024-05-12 13:39:14,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 602 transitions, 9865 flow [2024-05-12 13:39:14,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:39:14,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:39:14,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 231 transitions. [2024-05-12 13:39:14,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49148936170212765 [2024-05-12 13:39:14,281 INFO L175 Difference]: Start difference. First operand has 291 places, 504 transitions, 7512 flow. Second operand 10 states and 231 transitions. [2024-05-12 13:39:14,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 602 transitions, 9865 flow [2024-05-12 13:39:16,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 602 transitions, 9718 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-05-12 13:39:16,439 INFO L231 Difference]: Finished difference. Result has 299 places, 526 transitions, 8065 flow [2024-05-12 13:39:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=7393, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8065, PETRI_PLACES=299, PETRI_TRANSITIONS=526} [2024-05-12 13:39:16,439 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 246 predicate places. [2024-05-12 13:39:16,439 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 526 transitions, 8065 flow [2024-05-12 13:39:16,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:39:16,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:39:16,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:39:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:39:16,440 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:39:16,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:39:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash -301212428, now seen corresponding path program 1 times [2024-05-12 13:39:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:39:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064442102] [2024-05-12 13:39:16,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:39:16,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:39:16,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:39:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:39:17,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:39:17,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064442102] [2024-05-12 13:39:17,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064442102] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:39:17,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:39:17,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:39:17,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626101554] [2024-05-12 13:39:17,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:39:17,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:39:17,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:39:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:39:17,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:39:18,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 47 [2024-05-12 13:39:18,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 526 transitions, 8065 flow. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 10 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 13:39:18,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:39:18,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 47 [2024-05-12 13:39:18,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:39:21,906 INFO L124 PetriNetUnfolderBase]: 9443/14534 cut-off events. [2024-05-12 13:39:21,906 INFO L125 PetriNetUnfolderBase]: For 601718/601718 co-relation queries the response was YES. [2024-05-12 13:39:22,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108949 conditions, 14534 events. 9443/14534 cut-off events. For 601718/601718 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 93459 event pairs, 2196 based on Foata normal form. 2/14235 useless extension candidates. Maximal degree in co-relation 108798. Up to 12928 conditions per place.